@font-face {
            font-family: "Press Start 2P";
            src: url("../assets/fonts/PressStart2P-Regular.ttf") format("truetype");
            font-style: normal;
            font-weight: 400;
            font-display: swap;
        }

        @font-face {
            font-family: "Namco Pixel";
            src: url("../assets/fonts/namco-pixel.ttf") format("truetype");
            font-style: normal;
            font-weight: 400;
            font-display: swap;
        }

        :root {
            color-scheme: dark;
            --page-background: #000000;
            --grid-color: rgba(255, 255, 255, 0.08);
            --panel-background: #111316;
            --panel-border: #2b2f35;
            --ui-radius: 0px;
            --touch-control-page-scale: 1;
        }

        .fps-counter {
            position: fixed;
            top: 8px;
            left: 8px;
            z-index: 22010;
            padding: 5px 6px;
            border: 1px solid currentColor;
            background: rgba(0, 0, 0, 0.78);
            font-family: "Press Start 2P", monospace;
            font-size: 8px;
            line-height: 1.4;
            white-space: nowrap;
            pointer-events: none;
            image-rendering: pixelated;
        }

        .fps-counter-low {
            color: #ff5050;
        }

        .fps-counter-medium {
            color: #ffd447;
        }

        .fps-counter-high {
            color: #54ed78;
        }

        body.light-theme {
            color-scheme: light;
            --page-background: #edf2f7;
            --grid-color: rgba(30, 41, 59, 0.12);
            --panel-background: #ffffff;
            --panel-border: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .app-header {
            background: #f8fafc;
            border-color: #cbd5e1;
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
        }

        body.light-theme .app-header h1,
        body.light-theme .settings-dialog,
        body.light-theme .serialization-panel,
        body.light-theme .tile-sidebar {
            color: #1e293b;
        }

        body.light-theme .app-header p,
        body.light-theme .serialization-panel label,
        body.light-theme .serialization-panel > summary,
        body.light-theme .level-data-section > summary,
        body.light-theme .settings-section > summary,
        body.light-theme .tile-sidebar h2,
        body.light-theme .simulation-controls label {
            color: #475569;
        }

        body.light-theme .settings-dialog,
        body.light-theme .serialization-panel,
        body.light-theme .tile-sidebar,
        body.light-theme .canvas-mode-controls,
        body.light-theme .map-zoom-controls {
            background-color: #f8fafc;
            border-color: #cbd5e1;
        }

        body.light-theme .settings-dialog {
            box-shadow: 0 18px 50px rgba(15, 23, 42, 0.2);
        }

        body.light-theme .settings-dialog-close,
        body.light-theme #settingsButton,
        body.light-theme #menuButton,
        body.light-theme .simulation-controls button,
        body.light-theme .serialization-panel button,
        body.light-theme .dimension-panel button,
        body.light-theme .map-zoom-button,
        body.light-theme .mouse-mode-button {
            background-color: #e2e8f0;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .simulation-controls button.toggle-on,
        body.light-theme .serialization-panel button.force-initial-lives-toggle.toggle-on,
        body.light-theme #panModeButton[aria-pressed="true"],
        body.light-theme .square-mode-button.selected {
            background-color: #bbf7d0;
            border-color: #16a34a;
            color: #14532d;
        }

        body.light-theme .simulation-controls button.toggle-off {
            background-color: #e2e8f0;
            color: #334155;
        }

        .audio-recovery-prompt {
            position: fixed;
            z-index: 10000;
            right: max(16px, env(safe-area-inset-right));
            bottom: max(16px, env(safe-area-inset-bottom));
            max-width: min(360px, calc(100vw - 32px));
            padding: 12px 16px;
            border: 1px solid #e3b341;
            border-radius: 8px;
            background: rgba(32, 29, 21, 0.96);
            color: #fff2c2;
            font: 12px "Press Start 2P", monospace;
            line-height: 1.6;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
        }

        .audio-recovery-prompt[hidden] {
            display: none;
        }

        .audio-recovery-prompt:disabled {
            cursor: wait;
            opacity: 0.75;
        }

        body.light-theme .serialization-panel button.force-initial-lives-toggle.toggle-off {
            background-color: #e2e8f0;
            color: #334155;
        }

        body.light-theme .settings-dialog input:not([type="checkbox"]):not([type="color"]),
        body.light-theme .settings-dialog select,
        body.light-theme .serialization-panel input,
        body.light-theme .serialization-panel select,
        body.light-theme .serialization-panel textarea,
        body.light-theme .map-zoom-input input,
        body.light-theme .map-zoom-input > span[aria-hidden="true"] {
            background-color: #ffffff;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .serialization-panel .force-initial-lives-toggle {
            background: #ffffff;
            color: #1e293b;
        }

        body.light-theme .tile-button.selected,
        body.light-theme .mouse-mode-button.selected {
            border-color: #2563eb;
            outline-color: #2563eb;
        }

        body.light-theme #messageDialog,
        body.light-theme #audioLoadingDialog {
            background-color: rgba(15, 23, 42, 0.42);
        }

        body.light-theme .app-header,
        body.light-theme .settings-dialog,
        body.light-theme #pngExportDialog,
        body.light-theme .serialization-panel,
        body.light-theme .tile-sidebar,
        body.light-theme .canvas-mode-controls,
        body.light-theme .map-zoom-controls,
        body.light-theme .debug-controls-row {
            background-color: #f8fafc;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .app-header h1,
        body.light-theme .settings-dialog,
        body.light-theme .settings-dialog-header h2,
        body.light-theme .serialization-panel,
        body.light-theme .serialization-panel > summary,
        body.light-theme .serialization-panel label,
        body.light-theme .tile-sidebar h1,
        body.light-theme .tile-sidebar h2,
        body.light-theme .simulation-controls label,
        body.light-theme .debug-controls-row > label {
            color: #1e293b;
        }

        body.light-theme .app-header p {
            color: #475569;
        }

        body.light-theme .canvas-panel {
            background: #e2e8f0;
        }

        body.light-theme .dimension-panel {
            background: #e2e8f0;
            border-color: #cbd5e1;
        }

        body.light-theme .settings-dialog input:not([type="checkbox"]):not([type="color"]),
        body.light-theme .settings-dialog select,
        body.light-theme .serialization-panel input:not([type="checkbox"]):not([type="color"]),
        body.light-theme .serialization-panel select,
        body.light-theme .serialization-panel textarea,
        body.light-theme .png-export-form input:not([type="checkbox"]):not([type="color"]),
        body.light-theme .png-export-form select,
        body.light-theme .png-export-form textarea,
        body.light-theme .debug-controls-row input,
        body.light-theme .debug-controls-row select {
            background-color: #ffffff;
            border-color: #cbd5e1;
            color: #1e293b;
            color-scheme: light;
        }

        body.light-theme .settings-dialog button:not(.toggle-on),
        body.light-theme .serialization-panel button:not(.toggle-on),
        body.light-theme .dimension-panel button,
        body.light-theme .debug-controls-row button:not(.toggle-on),
        body.light-theme .map-zoom-button,
        body.light-theme #settingsButton,
        body.light-theme #menuButton,
        body.light-theme .settings-dialog-close {
            background-color: #e2e8f0;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .simulation-controls button.toggle-on,
        body.light-theme .serialization-panel button.toggle-on,
        body.light-theme .debug-controls-row button.toggle-on,
        body.light-theme #panModeButton[aria-pressed="true"],
        body.light-theme .square-mode-button.selected {
            background-color: #bbf7d0;
            border-color: #16a34a;
            color: #14532d;
        }

        body.light-theme .message-box,
        body.light-theme .audio-loading-box {
            background: #ffffff;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .message-box label,
        body.light-theme .audio-loading-box p {
            color: #475569;
        }

        body.light-theme .message-box button,
        body.light-theme #startMutedLevelButton,
        body.light-theme #retryAudioLoadingButton,
        body.light-theme #cancelGameAssetPreparationButton {
            background: #e2e8f0;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .pack-editor-screen {
            background: #edf2f7;
            color: #1e293b;
        }

        body.light-theme .pack-editor-workspace {
            background: #ffffff;
            border-color: #cbd5e1;
        }

        body.light-theme .pack-editor-heading p,
        body.light-theme .pack-editor-status,
        body.light-theme .pack-directory-location,
        body.light-theme .pack-editor-breadcrumb,
        body.light-theme .pack-editor-empty-state {
            color: #475569;
        }

        body.light-theme .pack-editor-screen button:not(.pack-editor-primary) {
            background: #e2e8f0;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .pack-editor-primary,
        body.light-theme #startLoadedLevelButton {
            background-color: #276238;
            color: #ffffff;
        }

        body.selection-action-locked .app-shell,
        body.selection-action-locked #settingsButton,
        body.selection-action-locked #menuButton {
            pointer-events: none;
        }

        body.selection-action-locked button {
            cursor: wait;
        }

        body.rounded-ui {
            --ui-radius: 8px;
        }

        body.pixel-cursor,
        body.pixel-cursor * {
            cursor: none !important;
        }

        #pixelCursorImage {
            position: fixed;
            z-index: 10000;
            display: none;
            width: 24px;
            height: 24px;
            pointer-events: none;
            image-rendering: pixelated;
        }

        body.pixel-cursor #pixelCursorImage {
            display: block;
        }

        * {
            box-sizing: border-box;
        }

        .app-shell button {
            transition: filter 120ms ease, transform 120ms ease, box-shadow 120ms ease;
        }

        .app-shell button:hover {
            filter: brightness(1.2);
            transform: translateY(-2px);
        }

        .app-shell button:active {
            transform: translateY(1px);
        }

        html,
        body {
            width: 100%;
            height: 100%;
            margin: 0;
        }

        html {
            touch-action: pan-y;
        }

        body {
            min-height: 100%;
            overflow: auto;
            background: var(--page-background);
        }

        body.pack-editor-open {
            overflow: hidden;
        }

        .start-menu {
            position: fixed;
            z-index: 20000;
            inset: 0;
            display: grid;
            place-items: center;
            overflow: hidden;
            overscroll-behavior: none;
            background: #000000;
        }

        .start-menu[hidden] {
            display: none;
        }

        .start-menu-stage {
            position: relative;
            container-type: inline-size;
            box-sizing: border-box;
            width: min(100vw, 133.333vh);
            height: auto;
            max-height: 100vh;
            aspect-ratio: 4 / 3;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: #000000;
        }

        #initialAssetLoading {
            position: absolute;
            z-index: 2;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px;
            color: #ffffff;
            font: 12px "Press Start 2P", monospace;
            text-align: center;
        }

        #initialAssetLoading.has-error {
            color: #ff6b6b;
        }

        #initialAssetLoading[hidden] {
            display: none;
        }

        #initialAssetLoadingProgress {
            font-size: 10px;
        }

        #retryInitialAssetsButton {
            position: absolute;
            z-index: 3;
            bottom: 12%;
            left: 50%;
            padding: 10px 14px;
            border: 1px solid #ffffff;
            background: #242a31;
            color: #ffffff;
            font: 10px "Press Start 2P", monospace;
            transform: translateX(-50%);
            cursor: pointer;
        }

        #retryInitialAssetsButton[hidden] {
            display: none;
        }

        .asset-diagnostic-report {
            box-sizing: border-box;
            max-height: min(32vh, 240px);
            overflow: auto;
            padding: 10px 12px;
            border: 1px solid #a83232;
            border-radius: 5px;
            background: rgba(35, 8, 8, 0.94);
            color: #ffb3b3;
            font: 10px/1.5 "Press Start 2P", monospace;
            text-align: left;
            overflow-wrap: anywhere;
        }

        .asset-diagnostic-report[hidden] {
            display: none;
        }

        .asset-diagnostic-report summary {
            color: #ff6b6b;
            cursor: pointer;
        }

        .asset-diagnostic-report ul {
            margin: 8px 0;
            padding-left: 20px;
        }

        .asset-diagnostic-report li + li {
            margin-top: 6px;
        }

        .asset-diagnostic-report p {
            margin: 8px 0 0;
        }

        .start-menu-stage > .asset-diagnostic-report {
            position: absolute;
            z-index: 3;
            right: 5%;
            bottom: 19%;
            left: 5%;
        }

        #assetLoadReport {
            margin-top: 8px;
        }

        #assetLoadReport:not([hidden]) {
            display: block;
        }

        #assetLoadStatus[data-error="true"] {
            color: #ff6b6b;
        }

        #audioLoadingText.has-error {
            color: #ff6b6b;
        }

        .start-menu-content {
            display: flex;
            box-sizing: border-box;
            width: 100%;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3cqw;
            padding: 4cqw;
            visibility: hidden;
            transform: translate3d(0, var(--start-menu-rise-distance, 0px), 0);
        }

        .start-menu-content.start-menu-intro-complete {
            visibility: visible;
            transform: translate3d(0, 0, 0);
        }

        .start-menu-content.start-menu-intro {
            visibility: visible;
            animation: start-menu-rise 2s linear both;
        }

        @keyframes start-menu-rise {
            from {
                transform: translate3d(0, var(--start-menu-rise-distance), 0);
            }
            to {
                transform: translate3d(0, 0, 0);
            }
        }

        body.show-menu-frame .start-menu-stage {
            outline: 2px dashed #ffffff;
            outline-offset: -3px;
        }

        .start-menu-logo {
            display: block;
            width: 82cqw;
            height: auto;
            object-fit: contain;
            image-rendering: pixelated;
        }

        .start-menu-options {
            display: flex;
            width: 100%;
            flex-direction: column;
            align-items: center;
            gap: 0.8cqw;
        }

        .start-menu-option {
            min-width: min(28cqw, 100%);
            max-width: 100%;
            min-height: 5.5cqw;
            padding: 0.8cqw 1.2cqw;
            border: 0;
            background: transparent;
            color: #ffffff;
            cursor: pointer;
            font-family: "Press Start 2P", monospace;
            font-size: 2.7cqw;
            font-stretch: normal;
            font-synthesis: none;
            line-height: 1.5;
            text-align: center;
            white-space: nowrap;
        }

        .start-menu-corner-label {
            position: absolute;
            bottom: 3cqw;
            color: #ffffff;
            font-family: "Press Start 2P", monospace;
            font-size: 2.7cqw;
            line-height: 1.5;
            visibility: hidden;
            transform: translate3d(0, var(--start-menu-rise-distance, 0px), 0);
        }

        .start-menu-corner-label.start-menu-corner-intro {
            visibility: visible;
            animation: start-menu-rise 2s linear both;
        }

        .start-menu-corner-label.start-menu-corner-complete {
            visibility: visible;
            transform: translate3d(0, 0, 0);
        }

        .start-menu-version {
            right: 3cqw;
        }

        .start-menu-email {
            left: 3cqw;
        }

        .start-menu-option:focus-visible {
            outline: 2px solid #ffffff;
            outline-offset: 4px;
        }

        .start-menu-option:active {
            color: #e54545;
        }

        .start-menu-option:disabled {
            color: #777777;
            cursor: not-allowed;
        }

        .start-menu-editor-button {
            text-transform: uppercase;
        }

        body[data-game-mode="play"] .start-menu-editor-button {
            display: none;
        }

        body[data-game-mode="play"] #packEditorWorkspaceActions,
        body[data-game-mode="play"] #packDirectoryLocation {
            display: none;
        }

        .play-entry-page {
            display: grid;
            min-height: 100vh;
            min-height: 100dvh;
            place-items: center;
            margin: 0;
            padding: 24px;
            background: #080c10;
            color: #ffffff;
            text-align: center;
        }

        .play-entry {
            display: grid;
            justify-items: center;
            gap: 1.5rem;
            max-width: 36rem;
        }

        .play-entry h1 {
            margin: 0;
            font-family: "Press Start 2P", monospace;
            font-size: clamp(1.25rem, 4vw, 2rem);
            line-height: 1.5;
        }

        .play-entry p {
            margin: 0;
            font-family: "Press Start 2P", monospace;
            font-size: clamp(0.75rem, 2vw, 1rem);
            line-height: 1.8;
        }

        .play-entry-button {
            display: inline-block;
            padding: 1rem 1.5rem;
            border: 2px solid currentColor;
            color: inherit;
            font-family: "Press Start 2P", monospace;
            text-decoration: none;
            text-transform: uppercase;
        }

        .play-entry-button:hover,
        .play-entry-button:focus-visible {
            background: #ffffff;
            color: #080c10;
        }

        .start-menu-brand {
            margin-top: 0.8cqw;
            color: #ffffff;
            font-family: "Press Start 2P", monospace;
            font-size: 2.7cqw;
            line-height: 1.5;
            text-align: center;
        }

        .start-menu-brand > span {
            display: block;
        }

        .start-menu-brand-name {
            color: #e53935;
        }

        .start-menu-brand-highlight {
            color: #f3d43b;
        }

        .start-menu-brand-credit {
            color: #e53935;
            font-family: "Namco Pixel", monospace;
        }

        .pack-editor-screen {
            position: fixed;
            z-index: 19000;
            inset: 0;
            box-sizing: border-box;
            display: flex;
            min-width: 0;
            min-height: 0;
            flex-direction: column;
            gap: 12px;
            padding: 14px;
            background: #0b0d10;
            color: #f2f4f7;
        }

        .pack-editor-screen[hidden] {
            display: none;
        }

        body.pack-play-mode #packEditorWorkspaceActions {
            display: flex;
            justify-content: center;
        }

        body.pack-play-mode #packEditorWorkspaceActions > :not(#packsDirectoryButton) {
            display: none !important;
        }

        #gamePlayScreen {
            position: fixed;
            z-index: 19000;
            inset: 0;
            display: grid;
            place-items: center;
            overflow: hidden;
            background: #000000;
        }

        #gamePlayScreen[hidden] {
            display: none;
        }

        .game-play-stage {
            position: relative;
            container-type: inline-size;
            display: grid;
            grid-template-columns: 3fr 1fr;
            align-items: stretch;
            width: min(100vw, 133.333vh);
            max-height: 100vh;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: #000000;
            color: #ffffff;
        }

        @supports (height: 100dvh) {
            .game-play-stage {
                width: min(100vw, 133.333dvh);
                max-height: 100dvh;
            }
        }

        #levelIntroCurtain {
            position: absolute;
            z-index: 8;
            inset: 0;
            overflow: hidden;
            background: #636363;
        }

        #levelIntroCurtain[hidden] {
            display: none;
        }

        #levelIntroCurtain.opening {
            background: transparent;
        }

        #levelTransitionBlack {
            position: absolute;
            z-index: 7;
            inset: 0;
            background: #000000;
        }

        #levelTransitionBlack[hidden] {
            display: none;
        }

        #levelScoreScreen {
            position: absolute;
            z-index: 9;
            inset: 0;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2.4cqw;
            padding: 5cqw 8cqw;
            background: #000000;
            color: #ffffff;
            font-family: "Press Start 2P", monospace;
            text-align: center;
        }

        #levelScoreScreen[hidden] {
            display: none;
        }

        #levelScoreScreen h2 {
            margin: 0;
            color: #ffffff;
            font-size: max(18px, 3.2cqw);
            line-height: 1.5;
        }

        #levelScoreRanks {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            grid-template-rows: repeat(5, auto);
            grid-auto-flow: column;
            gap: 0 8cqw;
            width: 100%;
        }

        .level-score-row {
            display: grid;
            grid-template-columns: max(24px, 4cqw) minmax(24px, 1fr) max(50px, 10cqw);
            align-items: center;
            gap: 1.5cqw;
            min-height: 5cqw;
            border-bottom: 1px solid #555555;
            font-size: max(8px, 1.6cqw);
            line-height: 1.4;
            text-align: left;
        }

        .level-score-enemy {
            display: block;
            width: max(24px, 4cqw);
            height: max(24px, 4cqw);
            image-rendering: pixelated;
        }

        .level-score-row span:nth-child(2),
        .level-score-row span:nth-child(3) {
            text-align: right;
        }

        #levelScoreTotal {
            margin: 0;
            font-size: max(12px, 2cqw);
            line-height: 1.5;
        }

        .level-intro-half {
            position: absolute;
            left: 0;
            width: 100%;
            height: 50%;
            background: #636363;
        }

        .level-intro-half-top {
            top: 0;
        }

        .level-intro-half-bottom {
            bottom: 0;
        }

        #levelIntroCurtain.opening .level-intro-half-top {
            animation: level-intro-open-top 900ms linear both;
        }

        #levelIntroCurtain.opening .level-intro-half-bottom {
            animation: level-intro-open-bottom 900ms linear both;
        }

        @keyframes level-intro-open-top {
            from {
                transform: translate3d(0, 0, 0);
            }
            to {
                transform: translate3d(0, -200%, 0);
            }
        }

        @keyframes level-intro-open-bottom {
            from {
                transform: translate3d(0, 0, 0);
            }
            to {
                transform: translate3d(0, 200%, 0);
            }
        }

        #levelIntroTitle {
            position: absolute;
            z-index: 1;
            top: 50%;
            left: 0;
            width: 100%;
            margin: 0;
            color: #111111;
            font: max(16px, 3.2cqw) "Press Start 2P", monospace;
            line-height: 1.5;
            text-align: center;
            transform: translateY(-50%);
            transition: opacity 160ms linear;
        }

        #levelIntroCurtain.title-hidden #levelIntroTitle {
            opacity: 0;
        }

        #gamePlayCanvasHost {
            display: flex;
            min-width: 0;
            min-height: 0;
            align-items: center;
            justify-content: center;
        }

        .game-play-stage .canvas-panel {
            position: relative;
            box-sizing: border-box;
            display: flex;
            width: 100%;
            height: 100%;
            min-width: 0;
            min-height: 0;
            flex: 1 1 auto;
            align-items: center;
            justify-content: flex-end;
            gap: 0;
            overflow: hidden;
            padding: 0;
            border: 0;
            background: #000000;
        }

        .game-play-stage .map-viewport {
            container-type: size;
            flex: 0 0 auto;
            margin-left: auto;
            max-width: 100%;
            max-height: 100%;
        }

        .game-play-stage .canvas-panel > #simulationButton {
            display: none !important;
        }

        .game-play-stage #simulationButton,
        .game-play-stage #debugSettingsRow,
        .game-play-stage #enemyDebugPanel {
            display: none !important;
        }

        .game-play-stage .map-viewport #gameOverMessage.visible {
            position: absolute;
            z-index: 4;
            top: 50%;
            left: 0;
            width: 100%;
            margin: 0;
            font-size: max(20px, 4.2cqw);
            line-height: 1.4;
            transform: translateY(-50%);
        }

        .game-play-stage .map-viewport #gameOverMessage.visible:not(.game-over-intro) {
            visibility: hidden;
        }

        .game-play-stage .map-viewport #gameOverMessage.visible.game-over-intro {
            visibility: visible;
            animation: game-over-rise 2s linear both;
        }

        @keyframes game-over-rise {
            from {
                transform: translateY(calc(100% + 50cqh));
            }
            to {
                transform: translateY(-50%);
            }
        }

        #gamePlayHud {
            box-sizing: border-box;
            display: flex;
            min-width: 0;
            min-height: 0;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            gap: clamp(6px, 1.5cqw, 16px);
            padding: clamp(8px, 2cqw, 20px) clamp(4px, 1cqw, 12px);
            overflow: hidden;
            background: #636363;
        }

        #gamePlayHud .player-lives-panel {
            box-sizing: border-box;
            width: 100%;
            height: auto;
            min-height: 0;
            aspect-ratio: auto;
            flex: 0 0 auto;
            padding: 0;
            border: 0;
            background: transparent;
        }

        #gamePlayHud .player-status-display {
            box-sizing: border-box;
            width: 100%;
            flex-direction: column;
            align-items: center;
            gap: clamp(6px, 2cqi, 14px);
            --life-counter-icon-size: clamp(12px, 16cqi, 36px);
        }

        #gamePlayHud .player-lives-display {
            height: auto;
            flex: 0 0 auto;
            justify-content: center;
            gap: clamp(4px, 2cqi, 10px);
        }

        #gamePlayHud .player-lives-icon,
        #gamePlayHud .enemy-lives-icon {
            width: var(--life-counter-icon-size);
            height: var(--life-counter-icon-size);
        }

        #gamePlayHud .player-lives-count {
            font-size: var(--life-counter-icon-size);
            line-height: 1.3;
        }

        #gamePlayHud .enemy-lives-grid {
            grid-template-columns: repeat(2, var(--life-counter-icon-size));
            grid-template-rows: repeat(10, var(--life-counter-icon-size));
            grid-auto-rows: var(--life-counter-icon-size);
            width: calc(2 * var(--life-counter-icon-size));
            height: auto;
            aspect-ratio: auto;
            flex: 0 0 auto;
            row-gap: 0;
        }

        #gamePlayReturnButton {
            position: absolute;
            z-index: 5;
            right: 12px;
            bottom: 12px;
            box-sizing: border-box;
            width: auto;
            padding: 8px 12px;
            border: 1px solid #59636e;
            background: #242a31;
            color: inherit;
            font: inherit;
            font-size: 12px;
            cursor: pointer;
        }

        .game-play-stage #gamePauseMessage {
            position: absolute;
            z-index: 6;
            inset: 0 25% 0 0;
            display: none;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.62);
            color: #ffffff;
            font: 24px "Press Start 2P", monospace;
            pointer-events: none;
        }

        .game-play-stage #gamePauseMessage.visible {
            display: flex;
        }

        body.pack-game-active {
            overflow: hidden;
        }

        body.pack-game-active .app-shell {
            width: 0;
            height: 0;
            margin: 0;
            padding: 0;
        }

        body.pack-game-active .app-header,
        body.pack-game-active .tile-sidebar,
        body.pack-game-active .editor-layout,
        body.pack-game-active #settingsButton,
        body.pack-game-active #menuButton,
        body.pack-game-active #backToPackEditorButton,
        body.pack-game-active #savePackStageButton {
            display: none !important;
        }

        body.pack-game-active #audioLoadingDialog {
            z-index: 21001;
        }

        .pack-editor-header,
        .pack-editor-breadcrumb {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .pack-editor-header {
            min-height: 46px;
            padding: 0 4px;
        }

        .pack-editor-heading h1,
        .pack-editor-heading p,
        .pack-editor-sidebar h2,
        .pack-editor-empty-state h2,
        .pack-editor-empty-state p {
            margin: 0;
        }

        .pack-editor-heading h1 {
            font-size: 18px;
        }

        .pack-editor-heading p {
            margin-top: 5px;
            color: #98a4b2;
            font-size: 12px;
        }

        .pack-editor-screen button {
            min-height: 36px;
            padding: 7px 12px;
            border: 1px solid #46515d;
            background: #252d36;
            color: inherit;
            cursor: pointer;
            font: inherit;
        }

        .pack-editor-screen button:disabled {
            opacity: 0.48;
            cursor: not-allowed;
        }

        .pack-editor-primary {
            border-color: #3c8450 !important;
            background: #245d35 !important;
        }

        .pack-editor-main {
            display: flex;
            flex: 1;
            width: 100%;
            min-width: 0;
            min-height: 0;
            flex-direction: column;
        }

        .pack-editor-workspace {
            display: flex;
            flex: 1;
            min-width: 0;
            min-height: 0;
            flex-direction: column;
            gap: 10px;
            padding: 12px;
            border: 1px solid #29313a;
            background: #11151a;
        }

        .pack-editor-breadcrumb {
            justify-content: flex-start;
            min-height: 34px;
            overflow-x: auto;
            color: #aab5c1;
            font-size: 12px;
            white-space: nowrap;
        }

        .pack-editor-breadcrumb button {
            min-height: 28px;
            padding: 4px 8px;
            border: 0;
            background: transparent;
            color: #aab5c1;
        }

        .pack-editor-status {
            min-height: 18px;
            margin: 0;
            color: #aab5c1;
            font-size: 12px;
        }

        .pack-editor-status[data-error="true"] {
            color: #ff9d91;
        }

        .pack-directory-location {
            flex: 0 0 auto;
            margin: 0;
            color: #aab5c1;
            font-size: 11px;
            overflow-wrap: anywhere;
        }

        .pack-editor-grid {
            display: grid;
            flex: 1;
            width: 100%;
            min-width: 0;
            min-height: 0;
            grid-template-columns: repeat(auto-fill, minmax(164px, 1fr));
            grid-auto-rows: max-content;
            align-content: start;
            gap: 14px;
            overflow-x: hidden;
            overflow-y: scroll;
            padding: 4px;
            scrollbar-color: #697582 #171d24;
            scrollbar-gutter: stable;
            scrollbar-width: thin;
        }

        .pack-editor-grid::-webkit-scrollbar {
            width: 10px;
        }

        .pack-editor-grid::-webkit-scrollbar-track {
            background: #171d24;
        }

        .pack-editor-grid::-webkit-scrollbar-thumb {
            border: 2px solid #171d24;
            border-radius: 8px;
            background: #697582;
        }

        .pack-editor-card {
            display: grid;
            grid-template-rows: minmax(0, 1fr) auto;
            aspect-ratio: 4 / 5;
            min-width: 0;
            overflow: hidden;
            border: 1px solid #303a45;
            background: #171d24;
        }

        .pack-editor-card.has-actions {
            min-height: 260px;
            aspect-ratio: auto;
        }

        .pack-editor-card-open {
            display: grid;
            min-height: 0;
            grid-template-rows: minmax(0, 1fr) auto;
            gap: 7px;
            padding: 18px 8px 8px;
            border: 0 !important;
            background: transparent !important;
            text-align: left;
        }

        .pack-editor-card-open:hover {
            background: #202833 !important;
        }

        .pack-editor-card-thumbnail {
            display: grid;
            width: min(100%, 180px);
            height: auto;
            max-width: 100%;
            aspect-ratio: 1 / 1;
            justify-self: center;
            align-self: start;
            place-items: center;
            overflow: hidden;
            background: linear-gradient(145deg, #243244, #11161d);
            color: #b9d7f5;
            font-size: clamp(32px, 3vw, 52px);
        }

        .pack-editor-card-thumbnail img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            image-rendering: pixelated;
        }

        .pack-editor-card-title {
            min-width: 0;
            overflow: hidden;
            color: #f2f4f7;
            font-size: clamp(12px, 1vw, 15px);
            line-height: 1.4;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .pack-editor-card-actions {
            display: grid;
            align-content: start;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 4px;
            padding: 0 9px 9px;
        }

        .pack-editor-card-actions button {
            min-width: 0;
            min-height: 32px;
            padding: 5px 4px;
            font-size: clamp(10px, 0.85vw, 12px);
            line-height: 1.35;
            white-space: normal;
        }

        body:not(.pack-play-mode) .pack-editor-card[data-kind="stage"]:not(.is-dragging) {
            transition: transform 120ms ease, border-color 120ms ease;
        }

        body:not(.pack-play-mode) .pack-editor-card[data-kind="stage"].is-dragging {
            z-index: 2;
            border-color: #75c784;
            opacity: 0.55;
            pointer-events: none;
        }

        body:not(.pack-play-mode) .pack-editor-card[data-kind="stage"] .pack-editor-card-open {
            cursor: grab;
            touch-action: none;
            user-select: none;
        }

        body:not(.pack-play-mode) .pack-editor-card[data-kind="stage"] .pack-editor-card-open:active {
            cursor: grabbing;
        }

        .pack-editor-card-actions button:last-child:nth-child(odd) {
            grid-column: 1 / -1;
        }

        .pack-editor-footer {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-end;
            gap: 8px;
            min-height: 40px;
        }

        .pack-editor-empty-state {
            display: grid;
            flex: 1;
            place-content: center;
            justify-items: center;
            gap: 12px;
            padding: 24px;
            color: #aab5c1;
            text-align: center;
        }

        .pack-editor-empty-state h2,
        .pack-editor-empty-state p {
            margin: 0;
        }

        .pack-editor-status {
            min-height: 18px;
            margin: 0;
            color: #aab5c1;
            font-size: 12px;
        }

        .pack-editor-status[data-error="true"] {
            color: #ff9d91;
        }

        @media (max-width: 640px) {
            .pack-editor-screen {
                gap: 10px;
                padding: 10px;
            }

            .pack-editor-header {
                align-items: stretch;
                flex-direction: column;
                gap: 8px;
                padding: 0;
            }

            .pack-editor-heading h1 {
                font-size: clamp(15px, 5vw, 18px);
                overflow-wrap: anywhere;
            }

            .pack-editor-heading p {
                font-size: clamp(10px, 3vw, 12px);
                line-height: 1.45;
            }

            .pack-editor-header > button {
                width: 100%;
            }

            .pack-editor-workspace {
                padding: 8px;
            }

            .pack-editor-grid {
                grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr));
                gap: 8px;
                padding: 4px 2px 4px 4px;
            }

            .pack-editor-card,
            .pack-editor-card.has-actions {
                min-height: 0;
                aspect-ratio: auto;
            }

            .pack-editor-card-open {
                grid-template-rows: auto auto;
                padding: 10px 8px 8px;
            }

            .pack-editor-card-thumbnail {
                width: min(100%, 148px);
            }

            .pack-editor-card-title {
                font-size: clamp(11px, 3.5vw, 14px);
            }

            .pack-editor-card-actions {
                padding: 0 8px 8px;
            }

            .pack-editor-footer {
                justify-content: stretch;
                gap: 6px;
            }

            .pack-editor-footer > button {
                flex: 1 1 140px;
                min-width: 0;
                overflow-wrap: anywhere;
            }

            body.light-theme .pack-editor-grid {
                scrollbar-color: #94a3b8 #e2e8f0;
            }

            body.light-theme .pack-editor-grid::-webkit-scrollbar-track {
                background: #e2e8f0;
            }

            body.light-theme .pack-editor-grid::-webkit-scrollbar-thumb {
                border-color: #e2e8f0;
                background: #94a3b8;
            }
        }

        .app-shell {
            width: min(1180px, calc(100% - 32px));
            margin: 0 auto;
            padding: 24px 0 40px;
        }

        .app-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 18px;
            padding: 18px 20px;
            background: #1b222a;
            border: 1px solid #39444f;
            border-radius: var(--ui-radius);
        }

        .app-header h1 {
            margin: 0;
            color: #ffffff;
            font-size: 20px;
        }

        .app-header p {
            margin: 5px 0 0;
            color: #aeb8c2;
            font-size: 12px;
        }

        #assetLoadStatus {
            color: #aeb8c2;
            overflow-wrap: anywhere;
        }

        .app-header button {
            min-width: 150px;
            min-height: 40px;
            padding: 8px 16px;
            border: 1px solid #4d9b60;
            border-radius: var(--ui-radius);
            background: #276238;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            font-weight: 600;
        }

        .app-header button:hover {
            background: #347c48;
        }

        .settings-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 12px;
            margin-bottom: 14px;
        }

        dialog {
            opacity: 0;
            transform: translateY(24px) scale(0.985);
            transition:
                opacity 180ms ease-in-out,
                transform 180ms ease-in-out,
                display 180ms allow-discrete;
        }

        dialog[open] {
            opacity: 1;
            transform: translateY(0) scale(1);
        }

        @starting-style {
            dialog[open] {
                opacity: 0;
                transform: translateY(24px) scale(0.985);
            }
        }

        dialog::backdrop {
            transition: background-color 180ms ease-in-out;
        }

        body.settings-dialog-fallback-open::before {
            position: fixed;
            z-index: 21002;
            background: rgba(0, 0, 0, 0.72);
            content: '';
            inset: 0;
        }

        body.settings-dialog-fallback-open #settingsDialog {
            display: block;
            position: fixed;
            z-index: 21003;
            inset: 0;
            margin: auto;
        }

        .settings-dialog {
            width: min(760px, calc(100% - 28px));
            max-width: none;
            max-height: min(88dvh, 900px);
            margin: auto;
            padding: 16px;
            overflow: auto;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #111316;
            color: #ffffff;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.62);
            transition:
                opacity 180ms ease-in-out,
                transform 180ms ease-in-out,
                display 180ms allow-discrete;
        }

        .settings-dialog.menu-settings {
            width: min(560px, calc(100% - 28px));
        }

        .menu-settings .simulation-controls {
            align-items: stretch;
            flex-direction: column;
        }

        .menu-settings .simulation-controls > * {
            box-sizing: border-box;
            width: 100%;
        }

        .menu-settings .simulation-controls label {
            justify-content: space-between;
        }

        .menu-settings .tile-display-toggles,
        .menu-settings .editor-display-toggle-group {
            align-items: stretch;
            flex-direction: column;
        }

        .menu-settings .simulation-controls button {
            text-align: left;
        }

        .settings-section {
            margin-top: 10px;
            overflow: hidden;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: var(--panel-background);
        }

        .settings-section > summary {
            padding: 12px 14px;
            color: #ffffff;
            cursor: pointer;
            font-size: 14px;
            font-weight: 700;
            list-style-position: inside;
        }

        .settings-section > summary::marker {
            color: #aeb8c2;
        }

        .settings-section-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 16px;
            padding: 12px;
            border-top: 1px solid var(--panel-border);
        }

        .settings-section-content.settings-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            align-items: stretch;
        }

        .settings-subgroup {
            display: grid;
            align-content: start;
            gap: 8px;
            min-width: 0;
            padding: 12px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: rgba(255, 255, 255, 0.025);
        }

        .settings-subgroup-wide {
            grid-column: 1 / -1;
            width: 100%;
            box-sizing: border-box;
        }

        .settings-subgroup h3 {
            margin: 0 0 2px;
            color: #d9e0e7;
            font-size: 12px;
            font-weight: 700;
        }

        .settings-subgroup .settings-help {
            margin: 0;
            color: #aeb8c2;
            font-size: 12px;
            line-height: 1.5;
        }

        .settings-subgroup > button,
        .settings-action-list > button {
            width: 100%;
            text-align: left;
        }

        .settings-subgroup > label {
            justify-content: space-between;
            gap: 10px;
            min-width: 0;
        }

        .settings-subgroup > label input[type="range"] {
            min-width: 80px;
        }

        .settings-action-list {
            display: grid;
            gap: 8px;
        }

        .settings-action-list [role="status"] {
            min-height: 1.3em;
            color: #aeb8c2;
            font-size: 12px;
            line-height: 1.4;
            overflow-wrap: anywhere;
        }

        body.light-theme .settings-subgroup {
            background: rgba(15, 23, 42, 0.025);
        }

        body.light-theme .settings-subgroup h3 {
            color: #334155;
        }

        body.light-theme .settings-subgroup .settings-help,
        body.light-theme .settings-action-list [role="status"] {
            color: #64748b;
        }

        .settings-section > .settings-section-content,
        .level-data-section > .level-data-section-content {
            box-sizing: border-box;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transform: translateY(12px);
            visibility: hidden;
            transition:
                max-height 180ms ease-in-out,
                opacity 160ms ease-in-out,
                transform 180ms ease-in-out,
                visibility 0s linear 180ms;
        }

        .settings-section.is-expanded > .settings-section-content,
        .level-data-section.is-expanded > .level-data-section-content {
            max-height: 1400px;
            opacity: 1;
            transform: translateY(0);
            visibility: visible;
            transition:
                max-height 180ms ease-in-out,
                opacity 160ms ease-in-out,
                transform 180ms ease-in-out,
                visibility 0s;
        }

        @media (max-width: 560px) {
            .settings-section-content.settings-grid {
                grid-template-columns: minmax(0, 1fr);
            }

            .settings-subgroup-wide {
                grid-column: auto;
            }
        }

        .menu-settings .settings-section-editor {
            display: none;
        }

        .level-data-section {
            grid-column: 1 / -1;
            min-width: 0;
            overflow: hidden;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: var(--panel-background);
        }

        .level-data-section > summary {
            padding: 10px 12px;
            color: #ffffff;
            cursor: pointer;
            font-size: 13px;
            font-weight: 700;
            list-style-position: inside;
        }

        .level-data-section-content {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 12px;
            padding: 12px;
            border-top: 1px solid var(--panel-border);
        }

        .settings-dialog::backdrop {
            background: rgba(0, 0, 0, 0.72);
            transition: background-color 220ms ease-in-out;
        }

        #pngExportDialog {
            width: min(420px, calc(100% - 28px));
            max-width: none;
            max-height: min(88dvh, 900px);
            padding: 18px;
            overflow: auto;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #111316;
            color: #ffffff;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.62);
        }

        #pngExportDialog::backdrop {
            background: rgba(0, 0, 0, 0.72);
        }

        #pngExportStatus {
            margin: 0;
            color: #c9cdd2;
            font-size: 12px;
            line-height: 1.5;
        }

        #pngExportPreview {
            display: block;
            box-sizing: border-box;
            max-width: 100%;
            max-height: 38dvh;
            justify-self: center;
            object-fit: contain;
            background-color: #0d1013;
            image-rendering: pixelated;
        }

        .png-export-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-end;
            gap: 8px;
        }

        .png-export-actions button,
        .png-export-actions a {
            display: inline-flex;
            min-height: 36px;
            box-sizing: border-box;
            align-items: center;
            justify-content: center;
            padding: 7px 10px;
            border: 1px solid #59636e;
            border-radius: var(--ui-radius);
            background: #2b323a;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            text-decoration: none;
        }

        #pngExportShareButton[hidden],
        #pngExportDownloadLink[hidden] {
            display: none;
        }

        .png-export-actions #pngExportDownloadLink {
            border-color: #4d9b60;
            background: #276238;
        }

        .png-export-actions #pngExportShareButton {
            border-color: #1e3a8a;
            background: #2563eb;
            color: #ffffff;
        }

        .png-export-actions #pngExportShareButton:hover {
            border-color: #172554;
            background: #1d4ed8;
        }

        body.light-theme #pngExportStatus {
            color: #475569;
        }

        body.light-theme .png-export-form > p {
            color: #475569;
        }

        body.light-theme .png-export-actions button,
        body.light-theme .png-export-actions a {
            background: #e2e8f0;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .png-export-actions #pngExportDownloadLink {
            background: #276238;
            border-color: #4d9b60;
            color: #ffffff;
        }

        .png-export-form {
            display: grid;
            gap: 16px;
        }

        .png-export-form label {
            display: grid;
            gap: 8px;
        }

        .png-export-form > p {
            margin: 0;
            color: #c9cdd2;
            font-size: 12px;
            line-height: 1.5;
        }

        .png-export-form select,
        .png-export-actions button {
            min-height: 36px;
            padding: 7px 10px;
            border: 1px solid #59636e;
            border-radius: var(--ui-radius);
            background: #2b323a;
            color: #ffffff;
            font: inherit;
        }

        .settings-dialog-header {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-right: 42px;
            margin-bottom: 12px;
        }

        .settings-dialog-header h2 {
            margin: 0;
            font-size: 16px;
        }

        .settings-dialog-close,
        #settingsButton,
        #menuButton {
            min-height: 38px;
            padding: 7px 12px;
            border: 1px solid #59636e;
            border-radius: var(--ui-radius);
            background: #2b323a;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            transition: filter 120ms ease, transform 120ms ease, box-shadow 120ms ease;
        }

        .settings-dialog-close {
            position: absolute;
            top: -7px;
            right: -22px;
            z-index: 1;
            display: grid;
            width: 36px;
            min-width: 36px;
            height: 36px;
            min-height: 36px;
            place-items: center;
            padding: 0;
            border: 1px solid #8f2525;
            border-radius: var(--ui-radius);
            background: #c62828;
            color: #ffffff;
            font-size: 24px;
            line-height: 1;
        }

        #settingsDialog .settings-dialog-close {
            top: -5px;
            right: -5px;
        }

        .settings-dialog-close:hover {
            border-color: #7f1d1d;
            background: #b91c1c;
            color: #ffffff;
        }

        body.light-theme .settings-dialog .settings-dialog-close,
        body.light-theme #pngExportDialog .settings-dialog-close {
            border-color: #8f2525;
            background: #c62828;
            color: #ffffff;
        }

        body.light-theme .settings-dialog .settings-dialog-close:hover,
        body.light-theme #pngExportDialog .settings-dialog-close:hover {
            border-color: #7f1d1d;
            background: #b91c1c;
            color: #ffffff;
        }

        #settingsButton {
            position: fixed;
            right: max(14px, env(safe-area-inset-right));
            bottom: max(14px, env(safe-area-inset-bottom));
            z-index: 15;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.55);
        }

        #menuButton {
            position: fixed;
            left: max(14px, env(safe-area-inset-left));
            bottom: max(14px, env(safe-area-inset-bottom));
            z-index: 15;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.55);
        }

        #enableGameAudioButton {
            position: fixed;
            right: max(14px, env(safe-area-inset-right));
            bottom: max(66px, calc(env(safe-area-inset-bottom) + 66px));
            z-index: 16;
            min-height: 38px;
            padding: 7px 12px;
            border: 1px solid #58b96e;
            border-radius: var(--ui-radius);
            background: #276238;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
        }

        #enableGameAudioButton[hidden] {
            display: none;
        }

        #enableGameAudioButton:hover {
            background: #347c48;
            filter: brightness(1.12);
            transform: translateY(-2px);
        }

        .pack-stage-edit-control {
            position: fixed;
            z-index: 16;
            bottom: max(14px, env(safe-area-inset-bottom));
            min-height: 38px;
            padding: 7px 12px;
            border: 1px solid #59636e;
            border-radius: var(--ui-radius);
            background: #2b323a;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
        }

        #backToPackEditorButton {
            left: max(14px, env(safe-area-inset-left));
        }

        #savePackStageButton {
            left: max(190px, calc(env(safe-area-inset-left) + 176px));
            border-color: #3c8450;
            background: #245d35;
        }

        #settingsButton:hover,
        #menuButton:hover {
            background: #3a424b;
            filter: brightness(1.12);
            transform: translateY(-2px);
        }

        .editor-layout {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            width: 100%;
            padding: 8px 0 0;
        }

        .editor-layout.zoom-controls-hidden .canvas-panel {
            flex: 1 1 0;
        }

        .canvas-panel {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex: 1 1 auto;
            min-width: 0;
            padding: 18px;
            background: #0d1013;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
        }

        .map-viewport {
            position: relative;
            flex: 0 0 auto;
            max-width: 100%;
            overflow: hidden;
            background: #090a0c;
            touch-action: none;
            user-select: none;
            -webkit-user-select: none;
        }

        #editorInactivePauseMessage {
            position: absolute;
            z-index: 5;
            inset: 0;
            display: none;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.62);
            color: #ffffff;
            font: 16px "Press Start 2P", monospace;
            text-align: center;
            pointer-events: none;
        }

        #editorInactivePauseMessage.visible {
            display: flex;
        }

        .map-edge-indicators {
            position: absolute;
            z-index: 2;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
            animation: map-edge-pulse 1s ease-in-out infinite alternate;
        }

        .map-edge-indicators img {
            position: absolute;
            display: block;
            width: 32px;
            height: 32px;
            object-fit: contain;
            image-rendering: pixelated;
            opacity: 0;
            visibility: hidden;
            transition: opacity 90ms linear;
        }

        .map-edge-indicators img.is-visible {
            opacity: 1;
            visibility: visible;
            transition: none;
        }

        .map-edge-indicators img.is-hiding {
            opacity: 0;
            visibility: visible;
        }

        .map-edge-up {
            top: 6px;
            left: 50%;
            transform: translateX(-50%);
        }

        .map-edge-right {
            top: 50%;
            right: 6px;
            transform: translateY(-50%);
        }

        .map-edge-down {
            bottom: 6px;
            left: 50%;
            transform: translateX(-50%);
        }

        .map-edge-left {
            top: 50%;
            left: 6px;
            transform: translateY(-50%);
        }

        @keyframes map-edge-pulse {
            from { opacity: 0.5; }
            to { opacity: 1; }
        }

        .map-zoom-controls {
            display: grid;
            grid-template-columns: max-content;
            justify-items: center;
            align-content: center;
            gap: 4px;
            flex: 0 0 auto;
            padding: 4px;
            background: var(--panel-background);
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
        }

        .map-zoom-controls[hidden] {
            display: none;
        }

        .map-zoom-button {
            display: grid;
            place-items: center;
            width: var(--map-zoom-button-size, 18px);
            height: var(--map-zoom-button-size, 18px);
            min-width: 0;
            min-height: 0;
            padding: 1px;
            border: 2px solid transparent;
            border-radius: var(--ui-radius);
            background-color: #30353b;
            background-repeat: no-repeat;
            background-position: center;
            background-size: 70% 70%;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            font-size: 0;
            image-rendering: pixelated;
            touch-action: manipulation;
            -webkit-tap-highlight-color: transparent;
        }

        .app-shell .map-zoom-button,
        body.pixelated-ui .app-shell .map-zoom-button {
            box-shadow: none;
        }

        .app-shell .map-zoom-button:hover {
            background-color: #3a424b;
        }

        .map-zoom-button:disabled {
            cursor: not-allowed;
            filter: grayscale(1);
            opacity: 0.45;
        }

        #zoomInButton {
            background-image: url('../assets/textures/ui/plus.png');
        }

        #zoomOutButton {
            background-image: url('../assets/textures/ui/minus.png');
        }

        #zoomFitButton {
            background-image: url('../assets/textures/ui/reset.png');
        }

        #panModeButton {
            font-size: 11px;
            font-weight: 700;
        }

        #panModeButton[aria-pressed="true"] {
            border-color: #75c784;
            background-color: #276238;
        }

        .map-zoom-controls.shift-pan-active #panModeButton {
            outline: 2px solid #ffffff;
            outline-offset: 2px;
            filter: brightness(1.2);
        }

        .map-zoom-input {
            display: flex;
            align-items: stretch;
            width: 100px;
            min-width: 100px;
            flex: 0 0 100px;
            color: #ffffff;
            font-size: 11px;
            line-height: 1;
        }

        .map-zoom-input[hidden] {
            display: none;
        }

        .map-zoom-input .number-input-stepper {
            width: 82px;
            min-width: 82px;
            height: 32px;
            flex: 0 0 82px;
            border-right: 0;
            border-radius: 4px 0 0 4px;
        }

        .map-zoom-input input {
            box-sizing: border-box;
            width: 62px;
            min-width: 62px;
            flex: 0 0 62px;
            height: 100%;
            padding: 3px 1px;
            border: 1px solid var(--panel-border);
            border-right: 0;
            border-radius: 4px 0 0 4px;
            background: #090a0c;
            color: #ffffff;
            font: inherit;
            font-size: 11px;
            text-align: center;
        }

        .map-zoom-input > span[aria-hidden="true"] {
            display: grid;
            place-items: center;
            align-self: center;
            height: 30px;
            padding: 0 3px;
            border: 1px solid var(--panel-border);
            border-radius: 0 4px 4px 0;
            background: #20252b;
            font-size: inherit;
            line-height: 1;
        }

        body.pixelated-ui .map-zoom-input > span[aria-hidden="true"] {
            font-size: var(--pixelated-ui-font-size, 10px);
        }

        @media (pointer: coarse), (max-width: 700px) {
            .map-zoom-input > span[aria-hidden="true"] {
                font-size: 10px;
            }

            body.pixelated-ui .map-zoom-input > span[aria-hidden="true"] {
                font-size: 10px;
            }
        }

        .camera-panning {
            cursor: grabbing !important;
        }

        .map-viewport #gameCanvas {
            position: absolute;
            top: 0;
            left: 0;
            max-width: none;
            max-height: none;
            aspect-ratio: auto;
            image-rendering: pixelated;
            touch-action: none;
            transform-origin: top left;
            will-change: transform;
        }

        .map-viewport.pan-mode #gameCanvas {
            cursor: grab;
        }

        .map-viewport.paste-mode #gameCanvas {
            cursor: crosshair;
        }

        .canvas-mode-controls {
            flex: 0 0 auto;
            display: grid;
            grid-template-columns: var(--canvas-tool-size, 34px);
            gap: 8px;
            padding: 8px;
            background: var(--panel-background);
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
        }

        .canvas-mode-controls .mouse-mode-button {
            width: var(--canvas-tool-size, 34px);
            height: var(--canvas-tool-size, 34px);
            min-height: 0;
            aspect-ratio: 1 / 1;
            padding: 4px;
            background-repeat: no-repeat;
            background-position: center;
            background-size: contain;
            font-size: 0;
        }

        .canvas-mode-controls button.export-map-button,
        body.pixelated-ui .canvas-mode-controls button.export-map-button,
        body:not(.tile-names-mode) .canvas-mode-controls button.export-map-button {
            background-image: none !important;
            display: grid;
            place-items: center;
            padding: 1px;
            color: #ffffff;
            font-size: var(--canvas-tool-label-size, 10px);
            line-height: 1;
            white-space: normal;
        }

        body.tile-textures-mode .canvas-mode-controls .eraser-mode-button,
        body:not(.tile-textures-mode) .canvas-mode-controls .eraser-mode-button {
            background-image: url('../assets/textures/ui/eraser-tool.png') !important;
            image-rendering: pixelated;
        }
        body.tile-textures-mode .canvas-mode-controls .square-mode-button,
        body:not(.tile-textures-mode) .canvas-mode-controls .square-mode-button {
            background-image: url('../assets/textures/ui/square-tool.png') !important;
        }

        body.tile-textures-mode .canvas-mode-controls .fill-mode-button,
        body:not(.tile-textures-mode) .canvas-mode-controls .fill-mode-button {
            background-image: url('../assets/textures/ui/paint-bucket.png') !important;
        }

        body.pixelated-ui .canvas-mode-controls .mouse-mode-button,
        body.pixelated-ui .map-zoom-controls .map-zoom-button:not(#panModeButton) {
            font-size: 0;
            line-height: 0;
        }

        body.tile-names-mode .canvas-mode-controls .mouse-mode-button {
            width: 100%;
            height: var(--canvas-tool-size, 34px);
            min-height: 0;
            aspect-ratio: 1 / 1;
            padding: 4px;
            font-size: 8px;
            line-height: 1.25;
            white-space: normal;
            overflow-wrap: anywhere;
            text-align: center;
        }

        body:not(.tile-textures-mode) .canvas-mode-controls .mouse-mode-button {
            color: #ffffff;
            font-size: 8px;
            line-height: 1.25;
        }

        body.tile-names-mode .map-zoom-controls .map-zoom-button:not(#panModeButton) {
            width: max(var(--map-zoom-button-size, 18px), 72px);
            font-size: 8px;
            line-height: 1.25;
            white-space: normal;
            background-image: none;
        }

        .canvas-mode-controls .square-mode-button.selected {
            border-color: #75c784;
            background-color: #276238;
        }

        .canvas-mode-controls[hidden] {
            display: none;
        }

        .editor-display-toggle-group {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }

        .player-lives-panel {
            box-sizing: border-box;
            container-type: inline-size;
            --life-counter-icon-size: 5.2cqi;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            aspect-ratio: 5 / 1;
            height: auto;
            flex: 0 0 auto;
            min-width: 0;
            padding: 5.1%;
            background: #636363;
            border: 1px solid #4b4b4b;
            border-radius: var(--ui-radius);
        }

        .canvas-panel > .player-lives-panel {
            width: var(--editor-map-width, 100%);
        }

        .player-lives-display {
            display: flex;
            flex: 0 0 40%;
            align-items: center;
            min-width: 0;
            gap: 2cqi;
            height: auto;
            white-space: nowrap;
        }

        .player-status-display {
            box-sizing: border-box;
            display: flex;
            flex-wrap: nowrap;
            align-items: center;
            justify-content: center;
            gap: 4cqi;
            width: 100%;
            max-width: 100%;
            min-width: 0;
            white-space: nowrap;
        }

        .player-lives-icon {
            width: var(--life-counter-icon-size);
            height: var(--life-counter-icon-size);
            flex: 0 0 auto;
            object-fit: contain;
            image-rendering: pixelated;
        }

        .player-lives-count {
            color: #ffffff;
            font-family: "Press Start 2P", monospace;
            font-size: var(--life-counter-icon-size);
            font-weight: 400;
            line-height: 1;
            text-align: center;
            image-rendering: pixelated;
        }

        .enemy-lives-grid {
            display: grid;
            grid-template-columns: repeat(10, minmax(0, 1fr));
            grid-template-rows: repeat(2, minmax(0, 1fr));
            width: 52%;
            max-width: 100%;
            min-width: 0;
            min-height: 0;
            aspect-ratio: 5 / 1;
            flex: 0 0 52%;
            gap: 0;
            image-rendering: pixelated;
        }

        .enemy-lives-icon {
            display: block;
            width: var(--life-counter-icon-size);
            height: var(--life-counter-icon-size);
            min-height: 0;
            aspect-ratio: 1 / 1;
            object-fit: contain;
            image-rendering: pixelated;
        }

        .enemy-lives-icon[hidden] {
            display: none;
        }

        #gameOverMessage {
            display: none;
            width: 100%;
            color: #ff3030;
            font-family: "Press Start 2P", monospace;
            font-size: 16px;
            line-height: 16px;
            text-align: center;
            white-space: pre-line;
        }

        #gameOverMessage.visible {
            display: block;
        }

        .serialization-panel {
            display: block;
            grid-column: 1 / -1;
            width: 100%;
            min-width: 0;
            margin: 0;
            padding: 16px;
            box-sizing: border-box;
            background: var(--panel-background);
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
        }

        .serialization-panel > summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: #ffffff;
            cursor: pointer;
            font-size: 13px;
            font-weight: 600;
            list-style-position: inside;
        }

        .serialization-panel > summary::marker {
            color: #aeb8c2;
        }

        .level-data-expander {
            display: grid;
            grid-template-rows: 0fr;
            margin-top: 0;
            opacity: 0;
            visibility: hidden;
            transition:
                grid-template-rows 180ms ease-in-out,
                margin-top 180ms ease-in-out,
                opacity 160ms ease-in-out,
                visibility 0s linear 180ms;
        }

        .level-data-expander.is-expanded {
            grid-template-rows: 1fr;
            margin-top: 14px;
            opacity: 1;
            visibility: visible;
            transition:
                grid-template-rows 180ms ease-in-out,
                margin-top 180ms ease-in-out,
                opacity 160ms ease-in-out,
                visibility 0s;
        }

        .level-data-content {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 12px 16px;
            min-height: 0;
            overflow: hidden;
        }

        .serialization-panel label {
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 0;
            color: #ffffff;
            font-size: 13px;
        }

        .serialization-panel label > input,
        .serialization-panel label > select {
            box-sizing: border-box;
            width: 100%;
            min-width: 0;
            max-width: 100%;
        }

        .initial-lives-row {
            display: grid;
            grid-column: 1 / -1;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 12px;
            align-items: end;
        }

        .serialization-panel button.force-initial-lives-toggle {
            width: 100%;
            min-height: 38px;
            padding: 7px 10px;
            border-color: #686f78;
            background: #4a4f56;
            color: #ffffff;
            font: inherit;
            font-size: 12px;
            line-height: 1.35;
            text-align: center;
            cursor: pointer;
        }

        .serialization-panel button.force-initial-lives-toggle.toggle-on {
            border-color: #4d9b60;
            background: #276238;
        }

        .serialization-panel button.force-initial-lives-toggle.toggle-off {
            border-color: #686f78;
            background: #4a4f56;
        }

        body.light-theme .serialization-panel button.force-initial-lives-toggle.toggle-on {
            border-color: #16a34a;
            background: #bbf7d0;
            color: #14532d;
        }

        body.light-theme .serialization-panel button.force-initial-lives-toggle.toggle-off {
            border-color: #cbd5e1;
            background: #e2e8f0;
            color: #334155;
        }

        .serialization-panel textarea,
        .serialization-panel input,
        .serialization-panel select,
        .serialization-panel button {
            min-height: 38px;
            padding: 8px 10px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #090a0c;
            color: #ffffff;
            font: inherit;
        }

        .serialization-panel textarea {
            display: block;
            width: 100%;
            min-height: 96px;
            resize: vertical;
            font-family: monospace;
            font-size: 12px;
        }

        .dimension-panel {
            grid-column: 1 / -1;
            display: grid;
            grid-template-columns: repeat(2, minmax(70px, 120px)) auto;
            align-items: end;
            gap: 10px;
            margin: 0;
            padding: 12px;
            background: #171a1f;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
        }

        .dimension-panel label {
            display: flex;
            flex-direction: column;
            gap: 5px;
            color: #ffffff;
            font-size: 13px;
        }

        .dimension-panel input,
        .dimension-panel button {
            box-sizing: border-box;
            width: 100%;
            min-height: 36px;
            padding: 7px 10px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #090a0c;
            color: #ffffff;
            font: inherit;
        }

        .dimension-panel button {
            cursor: pointer;
            background: #24282e;
        }

        .level-code-field {
            grid-column: 1 / -1;
        }

        .level-code-actions {
            display: flex;
            justify-content: flex-end;
            gap: 6px;
            margin-top: 5px;
        }

        .serialization-panel .level-code-actions .level-code-icon-button {
            display: grid;
            place-items: center;
            width: 30px;
            min-width: 30px;
            min-height: 30px;
            padding: 4px;
            background: #24282e;
        }

        .serialization-panel .level-code-actions .level-code-share-button {
            min-height: 30px;
            padding: 4px 8px;
            border: 1px solid #1e3a8a;
            border-radius: var(--ui-radius);
            background: #2563eb;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            font-size: 12px;
        }

        .serialization-panel .level-code-actions .level-code-share-button:hover {
            border-color: #172554;
            background: #1d4ed8;
        }

        .level-code-actions button {
            position: relative;
        }

        .level-code-actions button.action-succeeded::after {
            position: absolute;
            inset: 0;
            border-radius: inherit;
            background: rgba(24, 96, 48, 0.88) url("../assets/textures/ui/check.png")
                center / 20px 20px no-repeat;
            content: "";
            animation: action-check 700ms ease-out both;
            pointer-events: none;
        }

        @keyframes action-check {
            0% {
                opacity: 0;
                transform: scale(0.65);
            }

            25% {
                opacity: 1;
                transform: scale(1);
            }

            75% {
                opacity: 1;
            }

            100% {
                opacity: 0;
            }
        }

        .level-code-actions img {
            display: block;
            width: 20px;
            height: 20px;
            object-fit: contain;
            image-rendering: pixelated;
        }

        .serialization-actions {
            display: flex;
            grid-column: 1 / -1;
            align-items: center;
            justify-content: flex-end;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 0;
        }

        .serialization-actions button {
            min-height: 30px;
            cursor: pointer;
        }

        .enemy-order-panel {
            grid-column: 1 / -1;
            min-width: 0;
            display: grid;
            gap: 8px;
        }

        .enemy-order-panel > label {
            font-size: 14px;
            line-height: 1.3;
            font-weight: 600;
        }

        .enemy-order-list {
            position: relative;
            min-width: 0;
            display: grid;
            gap: 3px;
            overflow-x: auto;
            overflow-y: hidden;
            overscroll-behavior-x: contain;
            scrollbar-width: none;
        }

        .enemy-order-list::-webkit-scrollbar {
            display: none;
        }

        .enemy-order-row {
            display: grid;
            width: max-content;
            min-width: max-content;
            grid-template-columns:
                24px 32px minmax(80px, 0.8fr) minmax(80px, 0.8fr)
                minmax(230px, 1.5fr) auto;
            gap: 6px;
            align-items: center;
        }

        .enemy-order-scrollbar {
            height: 16px;
            overflow-x: auto;
            overflow-y: hidden;
            border: 1px solid var(--panel-border);
            background: #090a0c;
            scrollbar-width: auto;
        }

        .enemy-order-scrollbar[hidden] {
            display: none;
        }

        .enemy-order-scrollbar-track {
            height: 1px;
        }

        .enemy-order-preview {
            width: 32px;
            height: 32px;
            image-rendering: pixelated;
            background: #090a0c;
            border: 1px solid var(--panel-border);
        }

        .enemy-order-index {
            color: #aab3bd;
            font-size: 12px;
            text-align: center;
        }

        .enemy-order-actions {
            display: flex;
            gap: 4px;
        }

        .enemy-spawn-choice-list {
            display: flex;
            align-items: center;
            gap: 2px;
            min-height: 34px;
            padding: 2px;
            border: 1px solid #303841;
            border-radius: 5px;
            background: #0c0f12;
        }

        .enemy-spawn-choice {
            position: relative;
            display: inline-flex;
            width: 28px;
            height: 28px;
            flex: 0 0 28px;
            align-items: center;
            justify-content: center;
            border-radius: 3px;
            cursor: pointer;
        }

        .enemy-spawn-choice.is-selected {
            background: #252b31;
            box-shadow: inset 0 0 0 1px #53616d;
        }

        .enemy-spawn-choice input {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            margin: 0;
            opacity: 0;
            cursor: pointer;
        }

        .enemy-spawn-choice-preview {
            width: 24px;
            height: 24px;
            image-rendering: pixelated;
            pointer-events: none;
        }

        .enemy-spawn-choice:focus-within {
            outline: 1px solid #a9d8ff;
            outline-offset: 1px;
        }

        .enemy-order-actions button,
        .enemy-order-add {
            min-height: 28px;
            padding: 3px 6px;
        }

        .enemy-order-actions .enemy-order-action-button {
            display: inline-flex;
            min-width: 36px;
            height: 34px;
            flex: 0 0 36px;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }

        .enemy-order-actions .enemy-order-tnt-button {
            width: 36px;
            min-width: 36px;
            flex: 0 0 36px;
            padding: 0;
            color: #ff9b9b;
            font-size: 8px;
            text-shadow: none;
        }

        .enemy-order-actions .enemy-order-tnt-button[aria-pressed="true"] {
            color: #ffffff;
            border-color: #ff4242;
            background: #a31717;
        }

        body.tile-textures-mode .enemy-order-actions .enemy-order-tnt-button,
        body:not(.tile-textures-mode) .enemy-order-actions .enemy-order-tnt-button {
            color: #ff9b9b;
            font-size: 8px;
        }

        .enemy-order-actions .enemy-order-tnt-button[aria-pressed="true"] {
            color: #ffffff;
        }

        .enemy-order-action-icon {
            display: none;
            width: 28px;
            height: 28px;
            flex: 0 0 28px;
            object-fit: contain;
            image-rendering: pixelated;
            pointer-events: none;
        }

        body.tile-textures-mode .enemy-order-action-icon {
            display: block;
        }

        body.tile-textures-mode .enemy-order-action-button {
            width: 36px;
            padding: 0;
            color: transparent;
            text-shadow: none;
            font-size: 0;
        }

        body.tile-textures-mode.tile-names-mode .enemy-order-action-button {
            display: inline-flex;
            width: auto;
            min-width: 70px;
            flex-basis: auto;
            padding: 3px 6px;
            color: #ffffff;
            font-size: 9px;
            text-shadow: 1px 1px 1px #000000;
        }

        body:not(.tile-names-mode) .enemy-order-action-button {
            color: transparent;
            text-shadow: none;
            font-size: 0;
        }

        body:not(.tile-textures-mode) .enemy-order-action-button {
            width: 36px;
            flex-basis: 36px;
        }

        body:not(.tile-textures-mode) .enemy-order-action-icon {
            display: none;
        }

        body:not(.tile-textures-mode).tile-names-mode .enemy-order-action-button {
            width: auto;
            min-width: 70px;
            flex-basis: auto;
            padding: 3px 6px;
            color: #ffffff;
            font-size: 9px;
        }

        body.pixelated-ui.tile-textures-mode:not(.tile-names-mode)
            .enemy-order-action-button {
            font-size: 0;
        }

        body.pixelated-ui:not(.tile-textures-mode):not(.tile-names-mode)
            .enemy-order-action-button {
            font-size: 0;
        }

        body.pixelated-ui.tile-textures-mode.tile-names-mode
            .enemy-order-action-button,
        body.pixelated-ui:not(.tile-textures-mode).tile-names-mode
            .enemy-order-action-button {
            font-size: 9px;
        }

        body:not(.tile-names-mode) .enemy-order-actions .enemy-order-tnt-button,
        body.pixelated-ui.tile-textures-mode.tile-names-mode
            .enemy-order-actions .enemy-order-tnt-button,
        body.pixelated-ui:not(.tile-textures-mode).tile-names-mode
            .enemy-order-actions .enemy-order-tnt-button {
            color: #ff9b9b;
            font-size: 8px;
            text-shadow: none;
        }

        body.pixelated-ui.tile-textures-mode:not(.tile-names-mode)
            .enemy-order-actions .enemy-order-tnt-button,
        body.pixelated-ui:not(.tile-textures-mode):not(.tile-names-mode)
            .enemy-order-actions .enemy-order-tnt-button {
            color: #ff9b9b;
            font-size: 8px;
            text-shadow: none;
        }

        body .enemy-order-actions .enemy-order-tnt-button[aria-pressed="true"] {
            color: #ffffff;
        }

        .enemy-order-size-control {
            min-width: 100px;
            max-width: 150px;
        }

        .enemy-order-row select {
            min-height: 28px;
            padding: 4px 4px;
            font-size: 11px;
        }

        .enemy-powerup-list {
            box-sizing: border-box;
            display: grid;
            grid-template-columns: repeat(8, minmax(0, 1fr));
            align-items: center;
            gap: 2px;
            min-width: 0;
            min-height: 30px;
            padding: 3px;
            border: 1px solid #303841;
            border-radius: 5px;
            background: #0c0f12;
        }

        .serialization-panel .enemy-powerup-list .enemy-powerup-toggle {
            position: relative;
            display: inline-flex;
            flex-direction: row;
            align-items: center;
            justify-content: center;
            min-width: 0;
            min-height: 22px;
            padding: 0;
            border: 0;
            border-radius: 0;
            background: transparent;
            cursor: pointer;
            transition: filter 120ms ease;
        }

        .serialization-panel .enemy-powerup-list .enemy-powerup-toggle.is-selected {
            background: transparent;
        }

        .serialization-panel .enemy-powerup-list .enemy-powerup-toggle input[type="checkbox"] {
            position: absolute;
            inset: 0;
            z-index: 1;
            width: 100%;
            height: 100%;
            flex: 1 1 auto;
            min-height: 0;
            margin: 0;
            padding: 0;
            border: 0;
            opacity: 0;
            appearance: none;
            cursor: pointer;
        }

        .serialization-panel .enemy-powerup-list .enemy-powerup-toggle img {
            display: block;
            width: 22px;
            height: 22px;
            max-width: 100%;
            flex: 0 1 22px;
            object-fit: contain;
            image-rendering: pixelated;
            opacity: 0.46;
            filter: brightness(0.58) saturate(0.72);
            pointer-events: none;
            transition: opacity 120ms ease, filter 120ms ease;
        }

        .serialization-panel .enemy-powerup-list .enemy-powerup-toggle.is-selected img {
            opacity: 1;
            filter: none;
        }

        .serialization-panel .enemy-powerup-list .enemy-powerup-toggle:focus-within {
            outline: 1px solid #a9d8ff;
            outline-offset: 1px;
        }

        .serialization-panel button {
            cursor: pointer;
            background: #24282e;
        }

        .serialization-panel button:hover {
            background: #343a43;
        }

        .simulation-controls {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 16px;
            padding: 12px 16px;
            background: var(--panel-background);
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
        }

        .settings-section .simulation-controls {
            padding: 12px;
            border: 0;
            border-radius: 0;
            background: transparent;
        }

        .simulation-controls button.settings-action-button {
            border-color: #59636e;
            background: #2b323a;
        }

        .simulation-controls button.settings-action-button:hover {
            background: #3a424b;
        }

        .simulation-controls button {
            min-height: 36px;
            padding: 7px 12px;
            border: 1px solid #3f7d4d;
            border-radius: var(--ui-radius);
            background: #4a4f56;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
        }

        .simulation-controls button:hover {
            filter: brightness(1.12);
        }

        .simulation-controls button:disabled {
            cursor: not-allowed;
            filter: grayscale(0.7);
            opacity: 0.5;
            transform: none;
        }

        .simulation-controls button:disabled:hover {
            filter: grayscale(0.7);
            transform: none;
        }

        .simulation-controls button.toggle-on {
            border-color: #4d9b60;
            background: #276238;
        }

        .simulation-controls button.toggle-off {
            border-color: #686f78;
            background: #4a4f56;
        }

        #simulationButton {
            width: 100%;
            min-height: 46px;
            padding: 10px 4px;
            border: 1px solid #58b96e;
            border-radius: var(--ui-radius);
            background: linear-gradient(135deg, #347c48, #20582f);
            box-shadow: 0 4px 0 #12351f, 0 8px 18px rgba(0, 0, 0, 0.28);
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: filter 120ms ease, transform 120ms ease, box-shadow 120ms ease;
        }

        #simulationButton:hover {
            filter: brightness(1.2);
            transform: translateY(-2px);
            box-shadow: 0 5px 0 #12351f, 0 10px 20px rgba(0, 0, 0, 0.32);
        }

        #simulationButton:active {
            transform: translateY(1px);
            box-shadow: 0 2px 0 #12351f, 0 5px 12px rgba(0, 0, 0, 0.24);
        }

        #simulationButton.is-playing {
            border-color: #d28b8b;
            background: linear-gradient(135deg, #8b3d3d, #592727);
            box-shadow: 0 4px 0 #351717, 0 8px 18px rgba(0, 0, 0, 0.28);
        }

        @keyframes play-trigger {
            0% { filter: brightness(1); }
            45% { filter: brightness(1.45); }
            100% { filter: brightness(1); }
        }

        #simulationButton.is-triggered {
            animation: play-trigger 250ms ease;
        }

        .simulation-controls label {
            display: flex;
            align-items: center;
            gap: 6px;
            min-height: 42px;
            color: #ffffff;
            font-size: 13px;
        }

        .tile-display-toggles {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .debug-controls-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 16px;
            width: 100%;
            margin-top: 10px;
            padding: 12px 16px;
            background: var(--panel-background);
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            box-sizing: border-box;
        }

        .debug-controls-row[hidden] {
            display: none;
        }

        .debug-controls-row > button,
        .debug-controls-row > label {
            min-height: 36px;
            padding: 7px 12px;
            border: 1px solid #3f7d4d;
            border-radius: var(--ui-radius);
            background: #4a4f56;
            color: #ffffff;
            font: inherit;
        }

        .enemy-debug-panel {
            width: 100%;
            max-width: 960px;
            margin-top: 8px;
            padding: 10px 12px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: rgba(10, 14, 18, 0.9);
            color: #dfe7f5;
            font-family: Consolas, 'SFMono-Regular', Menlo, monospace;
            font-size: 12px;
            line-height: 1.5;
            white-space: pre-wrap;
            word-break: break-word;
        }

        .enemy-debug-panel[hidden] {
            display: none;
        }

        .debug-controls-row > label {
            display: flex;
            align-items: center;
            gap: 6px;
            min-height: 42px;
            color: #ffffff;
            font-size: 13px;
        }

        .debug-controls-row > label.tank-texture-control {
            min-height: 0;
            padding: 0;
            border: 0;
            border-radius: 0;
            background: transparent;
        }

        .debug-controls-row button:hover {
            filter: brightness(1.12);
        }

        .debug-controls-row button.toggle-on {
            border-color: #4d9b60;
            background: #276238;
        }

        .debug-controls-row button.toggle-off {
            border-color: #686f78;
            background: #4a4f56;
        }

        .simulation-controls input[type="number"] {
            width: auto;
            min-height: 28px;
            padding: 3px 5px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #090a0c;
            color: #ffffff;
            font: inherit;
            font-size: 12px;
            line-height: 1.2;
        }

        .number-input-stepper {
            display: inline-flex;
            align-items: stretch;
            width: max-content;
            max-width: 100%;
            min-width: 0;
            height: 28px;
            overflow: hidden;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #090a0c;
            vertical-align: middle;
        }

        .number-input-stepper input[type="number"] {
            box-sizing: border-box;
            width: 54px;
            min-width: 0;
            min-height: 0;
            height: 100%;
            flex: 1 1 auto;
            padding: 3px 5px;
            border: 0;
            border-radius: 0;
            background: transparent;
            color: #ffffff;
            font: inherit;
            font-size: 12px;
            line-height: 1.2;
            text-align: center;
            appearance: textfield;
            -moz-appearance: textfield;
        }

        .number-input-stepper input[type="number"]::-webkit-inner-spin-button,
        .number-input-stepper input[type="number"]::-webkit-outer-spin-button {
            margin: 0;
            appearance: none;
            -webkit-appearance: none;
        }

        .number-input-stepper-buttons {
            display: flex;
            width: 18px;
            flex: 0 0 18px;
            flex-direction: column;
            border-left: 1px solid var(--panel-border);
        }

        .number-input-stepper-buttons button {
            display: grid;
            min-width: 0;
            min-height: 0;
            height: 50%;
            flex: 1 1 50%;
            place-items: center;
            padding: 0;
            border: 0;
            border-radius: 0;
            background: #30353b;
            color: #ffffff;
            font: 9px/1 Arial, sans-serif;
            cursor: pointer;
            touch-action: manipulation;
        }

        .number-input-stepper-buttons button + button {
            border-top: 1px solid var(--panel-border);
        }

        .number-input-stepper-buttons button:hover {
            background: #3a424b;
        }

        body.light-theme .number-input-stepper {
            background: #ffffff;
        }

        body.light-theme .number-input-stepper input[type="number"] {
            color: #111827;
        }

        body.light-theme .number-input-stepper-buttons button {
            background: #e2e8f0;
            color: #1f2937;
        }

        .dimension-panel .number-input-stepper,
        .initial-lives-row label .number-input-stepper {
            width: 100%;
        }

        #mapZoomInput {
            font-size: 10px;
        }

        @media (pointer: coarse), (max-width: 700px) {
            .simulation-controls input[type="number"],
            .serialization-panel input[type="number"],
            .png-export-form input[type="number"] {
                width: auto;
                min-height: 0;
                padding: 3px 5px;
            }

            #mapZoomInput {
                min-height: 0;
                padding: 3px 5px;
            }

            body.pixelated-ui .app-shell input[type="number"],
            body.pixelated-ui .settings-dialog input[type="number"],
            body.pixelated-ui .serialization-panel input[type="number"],
            body.pixelated-ui #mapZoomInput {
                font-size: 12px;
            }

            body.pixelated-ui .map-zoom-input input#mapZoomInput {
                font-size: 10px;
            }

            .number-input-stepper {
                height: 32px;
            }

            .number-input-stepper input[type="number"] {
                font-size: 13px;
            }

            .initial-lives-row input[type="number"],
            .dimension-panel input[type="number"] {
                width: auto;
            }

            .map-zoom-input {
                width: 78px;
            }

            .enemy-order-row select {
                min-height: 44px;
                padding: 8px;
                font-size: 11px;
                touch-action: manipulation;
            }

            body.pixelated-ui .app-shell .enemy-order-row select {
                font-size: 11px;
            }
        }

        .simulation-controls input[type="color"] {
            width: 42px;
            height: 32px;
            padding: 2px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #090a0c;
            cursor: pointer;
        }

        #pixelatedUiFontSizeInput {
            width: 72px;
        }

        canvas {
            display: block;
            width: min(70vmin, 780px);
            height: auto;
            aspect-ratio: 1 / 1;
            background: transparent;
            cursor: crosshair;
            image-rendering: pixelated;
            touch-action: none;
            user-select: none;
            -webkit-user-select: none;
        }

        canvas.moving-cursor {
            cursor: move;
        }

        .mobile-game-controls {
            display: none;
            height: 100vh;
            height: 100dvh;
            touch-action: none;
            user-select: none;
            -webkit-user-select: none;
        }

        .mobile-game-controls:not([hidden]) {
            display: block;
        }

        .mobile-game-controls button {
            box-sizing: border-box;
            width: var(--touch-pad-size, 52px);
            height: var(--touch-pad-size, 52px);
            display: grid;
            place-items: center;
            padding: 0;
            border: 1px solid #68727d;
            border-radius: 8px;
            background: #242a31;
            color: #ffffff;
            font: inherit;
            font-weight: 700;
            line-height: 1;
            touch-action: none;
            -webkit-tap-highlight-color: transparent;
        }

        .mobile-touch-pad button[data-game-direction],
        .touch-controls-preview button[data-touch-preview] {
            position: relative;
            font-size: 0;
        }

        .touch-control-arrow {
            position: absolute;
            top: 50%;
            left: 50%;
            display: block;
            width: 62%;
            height: 62%;
            background: currentColor;
            clip-path: polygon(
                50% 0, 100% 42%, 70% 42%, 70% 100%,
                30% 100%, 30% 42%, 0 42%
            );
            transform: translate(-50%, -50%);
            pointer-events: none;
        }

        .mobile-game-controls button.is-pressed {
            background: #3e6747;
            border-color: #75c784;
        }

        body.touch-controls-running .mobile-game-controls {
            position: fixed;
            z-index: 30;
            inset: 0;
            width: auto;
            min-width: 0;
            max-width: none;
            background: transparent;
            transform: none;
            display: block;
            pointer-events: none;
        }

        body.touch-controls-running {
            touch-action: none;
        }

        body.touch-controls-running .mobile-game-controls[hidden] {
            display: none !important;
        }

        body.touch-controls-running .mobile-game-controls button {
            position: absolute;
            pointer-events: auto;
        }

        body.touch-controls-running .mobile-touch-pad {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            display: block;
            pointer-events: none;
        }

        body.touch-controls-running .mobile-touch-pad button {
            position: absolute;
            pointer-events: auto;
        }

        body.touch-controls-running .mobile-touch-pad button[data-game-direction] {
            position: absolute;
        }

        .mobile-game-controls [data-game-fire] {
            border-color: #b86666;
            background: #612d2d;
        }

        .mobile-game-controls [data-game-fire] span,
        .touch-controls-preview-fire span {
            display: grid;
            width: 100%;
            height: 100%;
            place-items: center;
            font-size: 0.34em;
            line-height: 1;
        }

        .touch-controls-preview {
            position: relative;
            box-sizing: border-box;
            width: min(100%, calc(280px * var(--touch-screen-aspect-ratio, 1.7778)));
            max-height: 280px;
            aspect-ratio: var(--touch-screen-aspect-ratio, 1.7778);
            overflow: hidden;
            border: 1px solid #59636e;
            border-radius: 8px;
            background:
                linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
                #10151b;
            background-size: 24px 24px;
            touch-action: none;
            user-select: none;
        }

        .touch-controls-preview::before {
            position: absolute;
            top: 50%;
            left: 50%;
            box-sizing: border-box;
            width: var(--gameplay-screen-width, 75%);
            height: var(--gameplay-screen-height, 56.25%);
            border: 1px solid rgba(164, 207, 220, 0.55);
            border-radius: 4px;
            background: rgba(91, 150, 170, 0.2);
            content: "";
            pointer-events: none;
            transform: translate(-50%, -50%);
        }

        .touch-controls-configurator {
            display: flex;
            min-width: 0;
            flex: 1 1 100%;
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }

        .touch-controls-configurator.is-disabled {
            opacity: 0.55;
            pointer-events: none;
            user-select: none;
        }

        .touch-controls-configurator.is-disabled .touch-controls-preview {
            cursor: not-allowed;
        }

        .touch-controls-configurator > p {
            margin: 0;
        }

        .touch-controls-preview::after {
            position: absolute;
            inset: 0;
            z-index: 1;
            display: grid;
            place-items: center;
            color: rgba(226, 242, 247, 0.48);
            content: "GAMEPLAY 4:3";
            font: 10px "Press Start 2P", monospace;
            pointer-events: none;
        }

        .touch-controls-preview-fire {
            position: absolute;
            z-index: 2;
            touch-action: none;
            cursor: grab;
        }

        .touch-controls-preview [data-touch-preview]:active,
        .touch-controls-preview-fire:active {
            cursor: grabbing;
        }

        .touch-controls-preview button[data-touch-preview] {
            box-sizing: border-box;
            position: absolute;
            z-index: 2;
            display: grid;
            place-items: center;
            min-width: 0;
            min-height: 0;
            padding: 0;
            border: 1px solid #68727d;
            border-radius: 6px;
            background: #242a31;
            color: #ffffff;
            font-size: 0;
            font-weight: 700;
            line-height: 1;
            pointer-events: auto;
        }

        .touch-controls-preview button[data-touch-preview].is-selected {
            outline: 2px solid #75c784;
            outline-offset: 2px;
        }

        .touch-controls-preview button.touch-controls-preview-fire {
            border-color: #b86666;
            background: #612d2d;
        }

        .touch-controls-preview button.touch-controls-preview-fire span {
            pointer-events: none;
        }

        .touch-control-size-label {
            display: flex;
            width: min(100%, 520px);
            align-items: center;
            gap: 10px;
        }

        .touch-control-size-label input[type="range"] {
            flex: 1;
            min-width: 0;
        }

        .touch-control-settings-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }

        #touchControlsSettingsStatus {
            min-height: 1.4em;
            color: #aeb8c2;
            font-size: 12px;
        }

        .tank-texture-control {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #ffffff;
            font-size: 13px;
        }

        .tank-texture-control select {
            min-height: 34px;
            padding: 6px 8px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #090a0c;
            color: #ffffff;
            font: inherit;
        }

        .tile-sidebar {
            display: block;
            width: 100%;
            min-width: 0;
            margin-bottom: 14px;
            padding: 14px 16px 16px;
            box-sizing: border-box;
            background: var(--panel-background);
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
        }

        .tile-sidebar h1 {
            margin: 0 0 10px;
            color: #ffffff;
            font-size: 13px;
            font-weight: 600;
        }

        .tile-sidebar h2 {
            margin: 0 0 10px;
            color: #ffffff;
            font-size: 13px;
            font-weight: 600;
        }

        #tileSelector {
            display: grid;
            grid-template-columns: repeat(8, minmax(0, 1fr));
            gap: 8px;
        }
            body.tile-textures-mode #tileSelector {
                grid-template-columns: repeat(8, minmax(0, 1fr));
            }

        .tile-button {
            min-height: 34px;
            padding: 5px 8px;
            border: 2px solid transparent;
            border-radius: var(--ui-radius);
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            font-size: 12px;
            text-align: center;
            text-shadow: 0 1px 2px #000000;
            transition: border-color 120ms ease, filter 120ms ease;
        }

        .tile-button[data-tile-label]::after {
            content: attr(data-tile-label);
            display: none;
        }

        body.tile-names-mode .tile-button[data-tile-label]::after {
            display: block;
        }

            body.tile-textures-mode .tile-button,
            body.tile-textures-mode .mouse-mode-button {
                min-height: 0;
                aspect-ratio: 1 / 1;
                width: 100%;
                padding: 4px;
                background-repeat: no-repeat;
                background-position: center;
                background-size: contain;
                font-size: 0;
                image-rendering: pixelated;
            }

        .route-family-button {
            display: grid;
            place-items: center;
        }

        body.tile-textures-mode .route-family-button {
            padding: 1px;
        }

        body.tile-names-mode .route-family-button::after {
            content: "Routes";
        }

        body.tile-names-mode.tile-textures-mode .route-family-button {
            position: relative;
            display: block;
            min-height: 38px;
            aspect-ratio: auto;
            padding: 5px 6px 5px 38px !important;
            font-size: 9px;
            line-height: 1.3;
            text-align: left;
        }

        .route-family-button canvas {
            display: block;
            width: 100%;
            height: 100%;
            image-rendering: pixelated;
        }

        body.tile-names-mode.tile-textures-mode .route-family-button canvas {
            position: absolute;
            top: 50%;
            left: 2px;
            width: 34px;
            height: 34px;
            transform: translateY(-50%);
        }

        body:not(.tile-textures-mode) .route-family-button canvas {
            display: none;
        }

        .route-variant-palette {
            margin-top: 10px;
            padding: 10px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #17191c;
        }

        .route-variant-palette[hidden],
        .route-variant-group[hidden] {
            display: none;
        }

        .route-variant-tabs {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 6px;
            margin-bottom: 8px;
        }

        .route-variant-tab {
            min-width: 0;
            aspect-ratio: 4 / 1;
            min-height: 0;
            padding: 0 4px;
            border: 1px solid var(--panel-border);
            border-radius: var(--ui-radius);
            background: #252a30;
            color: #ffffff;
            font: inherit;
            font-size: 8px;
            cursor: pointer;
        }

        .route-variant-tab[aria-selected="true"] {
            border-color: #ffffff;
            background: #3b444e;
        }

        .route-variant-group h3 {
            margin: 0 0 6px;
            color: #ffffff;
            font-size: 10px;
        }

        .route-variant-options {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .route-variant-row {
            display: grid;
            grid-template-columns: repeat(8, minmax(0, 1fr));
            gap: 8px;
        }

        .route-variant-option {
            display: grid;
            min-width: 0;
            aspect-ratio: 1 / 1;
            place-items: center;
            padding: 1px;
            overflow: hidden;
            border: 2px solid transparent;
            border-radius: var(--ui-radius);
            background: #30353b;
            cursor: pointer;
            image-rendering: pixelated;
        }

        .route-variant-option[aria-pressed="true"] {
            border-color: #ffffff;
            box-shadow: 0 0 0 1px #111111;
        }

        .route-variant-option canvas {
            display: block;
            width: 100%;
            height: 100%;
            image-rendering: pixelated;
            object-fit: contain;
        }

        body.light-theme .route-variant-palette {
            background: #f1f5f9;
        }

        body.light-theme .route-variant-tab,
        body.light-theme .route-variant-group h3 {
            color: #1e293b;
        }

        body.light-theme .route-variant-option {
            background: #d5dce5;
        }

            body:not(.tile-names-mode) .tile-button,
            body:not(.tile-names-mode) .mouse-mode-button {
                color: transparent;
                text-shadow: none;
            }

            body:not(.tile-names-mode) .canvas-mode-controls button.export-map-button {
                color: #ffffff;
                font-size: var(--canvas-tool-label-size, 10px);
                line-height: 1;
                text-align: center;
                text-shadow: none;
                white-space: nowrap;
                overflow: hidden;
            }

            body.tile-names-mode #tileSelector {
                grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            }

            body.tile-names-mode.tile-textures-mode .tile-button,
            body.tile-names-mode.tile-textures-mode .mouse-mode-button {
                min-height: 38px;
                aspect-ratio: auto;
                width: 100%;
                padding: 5px 6px 5px 38px;
                background-size: 30px 30px;
                background-position: 4px center;
                font-size: 9px;
                line-height: 1.3;
                text-align: left;
                text-shadow: 1px 1px 1px #000000, -1px -1px 1px #000000;
            }

            body.tile-names-mode:not(.tile-textures-mode) .tile-button,
            body.tile-names-mode:not(.tile-textures-mode) .mouse-mode-button {
                font-size: 11px;
                line-height: 1.2;
                aspect-ratio: auto;
                width: 100%;
                min-height: 34px;
                text-shadow: 1px 1px 1px #000000, -1px -1px 1px #000000;
            }

            body:not(.tile-textures-mode) .tile-button,
            body:not(.tile-textures-mode) .mouse-mode-button {
                background-image: none !important;
                image-rendering: auto;
            }

            body:not(.tile-textures-mode) .tile-button {
                background-color: var(--tile-color) !important;
                min-height: 34px;
                aspect-ratio: auto;
                padding: 5px 4px;
            }

            body:not(.tile-textures-mode) .mouse-mode-button {
                background-color: #30353b !important;
                min-height: 34px;
                aspect-ratio: auto;
                padding: 5px 4px;
            }

            body.tile-textures-mode .mouse-mode-button {
                background-color: #30353b;
                background-image: url('../assets/textures/ui/Mouse-move.png');
            }

            body.tile-textures-mode .selection-mode-button {
                aspect-ratio: 1 / 1;
                min-height: 0;
                background-color: #30353b;
                background-image: url('../assets/textures/ui/Mouse-select-00.png');
                background-repeat: no-repeat;
                background-position: center;
                background-size: contain;
                font-size: 0;
            }

            body.tile-textures-mode .selection-mode-button:hover {
                background-image: url('../assets/textures/ui/Mouse-select-01.png');
            }

        .tile-button:hover {
            filter: brightness(1.2);
        }

        button:not(:disabled):hover {
            filter: brightness(1.2);
            transform: translateY(-2px);
        }

        button:not(:disabled) {
            transition:
                filter 120ms ease,
                transform 120ms ease,
                box-shadow 120ms ease,
                background-color 120ms ease;
        }

        button:not(:disabled):active {
            transform: translateY(1px);
        }

        .tile-button.selected {
            border-color: #ffffff;
            outline: 2px solid #ffffff;
            outline-offset: 2px;
        }

        .mouse-mode-button {
            min-height: 34px;
            padding: 5px 8px;
            border: 2px solid transparent;
            border-radius: var(--ui-radius);
            background: #30353b;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
            font-size: 12px;
            text-align: center;
        }

        .mouse-mode-button.selected {
            border-color: #ffffff;
            outline: 2px solid #ffffff;
            outline-offset: 2px;
        }

        .canvas-mode-controls .mouse-mode-button {
            width: 100%;
            min-height: 0;
            aspect-ratio: 1 / 1;
            padding: 4px;
            background-repeat: no-repeat;
            background-position: center;
            background-size: contain;
            font-size: 0;
        }

        @media (max-width: 700px) {
            .editor-layout {
                gap: 6px;
            }

            .canvas-panel {
                padding: 6px;
            }
        }

        #messageDialog {
            position: fixed;
            inset: 0;
            z-index: 21000;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.62);
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition:
                opacity 180ms ease-in-out,
                visibility 0s linear 180ms;
        }

        #messageDialog.visible {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transition:
                opacity 180ms ease-in-out,
                visibility 0s;
        }

        #audioLoadingDialog {
            position: fixed;
            inset: 0;
            z-index: 21001;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.72);
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition:
                opacity 180ms ease-in-out,
                visibility 0s linear 180ms;
        }

        #audioLoadingDialog.visible {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transition:
                opacity 180ms ease-in-out,
                visibility 0s;
        }

        .audio-loading-box {
            width: min(440px, calc(100% - 32px));
            padding: 22px;
            background: #171a1e;
            border: 1px solid #4d9b60;
            border-radius: var(--ui-radius);
            color: #ffffff;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.58);
            text-align: center;
            transform: translateY(20px) scale(0.985);
            transition: transform 180ms ease-in-out;
        }

        #audioLoadingDialog.visible .audio-loading-box,
        #messageDialog.visible .message-box {
            transform: translateY(0) scale(1);
        }

        .audio-loading-box h2 {
            margin: 0 0 12px;
            font-size: 18px;
        }

        .audio-loading-box p {
            margin: 0 0 18px;
            color: #c9cdd2;
            line-height: 1.45;
        }

        #startLoadedLevelButton {
            min-height: 38px;
            padding: 8px 18px;
            border: 1px solid #58b96e;
            border-radius: var(--ui-radius);
            background: #276238;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
        }

        #startLoadedLevelButton:disabled {
            cursor: wait;
            opacity: 0.58;
        }

        #startMutedLevelButton,
        #retryAudioLoadingButton,
        #cancelGameAssetPreparationButton {
            min-height: 38px;
            padding: 8px 18px;
            border: 1px solid #737c86;
            border-radius: var(--ui-radius);
            background: #343a43;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
        }

        #startMutedLevelButton[hidden],
        #retryAudioLoadingButton[hidden],
        #cancelGameAssetPreparationButton[hidden] {
            display: none;
        }

        .message-box {
            width: min(420px, calc(100% - 32px));
            padding: 18px;
            background: #171a1e;
            border: 1px solid #41474f;
            border-radius: var(--ui-radius);
            color: #ffffff;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
            transform: translateY(20px) scale(0.985);
            transition: transform 180ms ease-in-out;
        }

        .message-box p {
            margin: 0 0 16px;
            line-height: 1.45;
        }

        .message-box label {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
            color: #c9cdd2;
            font-size: 13px;
        }

        .message-box button {
            min-height: 36px;
            padding: 7px 16px;
            border: 1px solid #59636e;
            border-radius: var(--ui-radius);
            background: #2b323a;
            color: #ffffff;
            cursor: pointer;
            font: inherit;
        }

        .message-box [hidden] {
            display: none !important;
        }

        .message-confirm-actions {
            display: flex;
            justify-content: flex-end;
            gap: 8px;
        }

        body.pixelated-ui,
        body.pixelated-ui button,
        body.pixelated-ui input,
        body.pixelated-ui select,
        body.pixelated-ui textarea {
            font-family: "Press Start 2P", monospace;
        }

        body.pixelated-ui {
            font-size: var(--pixelated-ui-font-size, 10px);
        }

        body.pixelated-ui .app-shell * {
            font-size: var(--pixelated-ui-font-size, 10px);
        }

        body.pixelated-ui .app-shell #playerLivesCount {
            font-size: var(--life-counter-icon-size);
        }

        body.pixelated-ui button,
        body.pixelated-ui input,
        body.pixelated-ui select,
        body.pixelated-ui textarea {
            box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.8);
        }

        body.pixelated-ui.rounded-ui .app-shell button {
                border-radius: var(--ui-radius);
                border: 2px solid transparent;
                border-image: url("../assets/pixel-rounded-border.svg") 8 fill / 2px / 0 stretch;
        }

        @media (max-width: 700px) {
            .app-shell {
                width: min(100% - 20px, 560px);
                padding-top: 10px;
            }

            .app-header {
                align-items: stretch;
                flex-direction: column;
                gap: 12px;
            }

            .app-header button {
                width: 100%;
            }

            .settings-grid {
                grid-template-columns: 1fr;
            }

            canvas {
                width: min(88vmin, 780px);
                height: auto;
            }

            .tile-sidebar {
                width: 100%;
            }

            #tileSelector {
                grid-template-columns: repeat(8, minmax(0, 1fr));
            }

            .level-data-content {
                grid-template-columns: 1fr;
            }

            .initial-lives-row {
                grid-template-columns: minmax(0, 1fr);
                gap: 8px;
            }

            .initial-lives-row > *,
            .initial-lives-row label,
            .initial-lives-row .number-input-stepper,
            .initial-lives-row input[type="number"] {
                box-sizing: border-box;
                min-width: 0;
                max-width: 100%;
            }

            .initial-lives-row input[type="number"] {
                width: 100%;
            }

            .serialization-panel button.force-initial-lives-toggle {
                padding: 6px 4px;
                font-size: 10px;
            }

            .enemy-order-row {
                grid-template-columns: 24px 32px 90px 90px 230px auto;
            }

            .enemy-powerup-list,
            .enemy-order-actions {
                grid-column: auto;
            }

            .enemy-order-actions {
                justify-content: flex-end;
            }

            .serialization-actions {
                align-items: center;
                justify-content: flex-end;
            }

            .dimension-panel {
                align-items: stretch;
                grid-template-columns: 1fr 1fr;
            }

            .dimension-panel button {
                grid-column: 1 / -1;
            }

            .canvas-panel {
                padding: 8px;
            }

                #simulationButton {
                    width: 100%;
                }
        }

        body button:not(:disabled) {
                transition:
                    filter 120ms ease,
                    transform 120ms ease,
                    box-shadow 120ms ease,
                    background-color 120ms ease;
        }

        body button:not(:disabled):hover {
                filter: brightness(1.2);
                transform: translateY(-2px);
        }

        body button:not(:disabled):active {
                transform: translateY(1px);
        }

        body.light-theme .simulation-controls,
        body.light-theme .debug-controls-row,
        body.light-theme .dimension-panel,
        body.light-theme .tile-sidebar,
        body.light-theme .canvas-panel {
            color: #1e293b;
        }

        body.light-theme .simulation-controls label,
        body.light-theme .debug-controls-row > label,
        body.light-theme .dimension-panel label,
        body.light-theme .tile-sidebar h1,
        body.light-theme .tile-sidebar h2 {
            color: #334155;
        }

        body.light-theme .simulation-controls button:not(#simulationButton),
        body.light-theme .debug-controls-row > button,
        body.light-theme .dimension-panel button,
        body.light-theme .map-zoom-button,
        body.light-theme .canvas-mode-controls .mouse-mode-button,
        body.light-theme .serialization-panel button:not(.force-initial-lives-toggle),
        body.light-theme #settingsButton,
        body.light-theme #menuButton,
        body.light-theme .settings-dialog-close {
            background-color: #e2e8f0;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .simulation-controls button.toggle-on,
        body.light-theme .debug-controls-row button.toggle-on,
        body.light-theme .serialization-panel button.force-initial-lives-toggle.toggle-on,
        body.light-theme #panModeButton[aria-pressed="true"],
        body.light-theme .square-mode-button.selected {
            background-color: #bbf7d0;
            border-color: #16a34a;
            color: #14532d;
        }

        body.light-theme .simulation-controls button.toggle-off,
        body.light-theme .debug-controls-row button.toggle-off,
        body.light-theme .serialization-panel button.force-initial-lives-toggle.toggle-off {
            background-color: #e2e8f0;
            border-color: #cbd5e1;
            color: #334155;
        }

        body.light-theme .simulation-controls button.settings-action-button {
            background-color: #e2e8f0;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .simulation-controls input:not([type="checkbox"]):not([type="color"]),
        body.light-theme .debug-controls-row input:not([type="checkbox"]):not([type="color"]),
        body.light-theme .debug-controls-row select,
        body.light-theme .dimension-panel input,
        body.light-theme .enemy-order-row select,
        body.light-theme .map-zoom-input input {
            color-scheme: light;
            background-color: #ffffff;
            border-color: #cbd5e1;
            color: #1e293b;
        }

        body.light-theme .pack-editor-card {
            border-color: #cbd5e1;
            background: #f1f5f9;
        }

        body.light-theme .pack-editor-card-open:hover {
            background: #e2e8f0 !important;
        }

        @media (prefers-reduced-motion: reduce) {
            .settings-dialog,
            .settings-dialog::backdrop,
            .settings-section > .settings-section-content,
            .level-data-section > .level-data-section-content {
                transition-duration: 180ms;
            }
        }

        body.light-theme .pack-editor-card-title {
            color: #1e293b;
        }