html, body {
            overscroll-behavior: none;
        }

        body {
            background-color: #FDF4F5;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            min-height: 100vh;
            margin: 0;
            padding: 20px;
            color: #8E9AAF;
            touch-action: none;
        }

        h1 {
            color: #F4ACB7;
            margin: 0 0 10px 0;
            text-shadow: 2px 2px 0px #FFF;
            font-size: 28px;
            z-index: 10;
            text-align: center;
        }

        .main-wrapper {
            display: flex;
            flex-direction: row;
            gap: 30px;
            align-items: flex-start;
            justify-content: center;
            width: 100%;
            max-width: 950px;
            z-index: 10;
        }

        .left-column {
            display: flex;
            flex-direction: column;
            gap: 15px;
            width: 280px;
        }

        .leaderboard-panel,
        .instructions-panel {
            background: #FFFFFF;
            border-radius: 16px;
            padding: 15px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
        }

        .leaderboard-panel {
            border: 6px solid #FFCAD4;
        }

        .instructions-panel {
            border: 6px solid #B5EAD7;
        }

        .leaderboard-panel h2,
        .instructions-panel h2 {
            margin: 0;
            font-size: 20px;
            text-align: center;
            border-bottom: 2px dashed #FFE5D9;
            padding-bottom: 10px;
        }

        .leaderboard-panel h2 {
            color: #F4ACB7;
        }

        .instructions-panel h2 {
            color: #5CB85C;
            border-bottom-color: #D8E2DC;
            margin-bottom: 10px;
        }

        .name-input {
            width: 100%;
            padding: 8px;
            margin-top: 10px;
            border-radius: 10px;
            border: 2px solid #D8E2DC;
            color: #9D8189;
            font-weight: bold;
            outline: none;
            box-sizing: border-box;
            font-family: inherit;
        }

        .score-list {
            list-style: none;
            padding: 0;
            margin: 10px 0 0 0;
        }

        .score-list li {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid #FDF4F5;
            font-size: 14px;
            font-weight: bold;
            color: #9D8189;
        }

        .score-list li:first-child {
            color: #FFB7B2;
            font-size: 16px;
        }

        .instruction-content {
            font-size: 13px;
            color: #5c6b73;
            line-height: 1.6;
        }

        .game-panel {
            display: flex;
            flex-direction: column;
            align-items: center;
            width: 100%;
            max-width: 400px;
        }

        .stats-container {
            display: flex;
            justify-content: space-around;
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            background: rgba(255, 255, 255, 0.5);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: 18px;
            font-weight: bold;
            color: #9D8189;
            box-sizing: border-box;
            border: 6px solid #FFCAD4;
            box-shadow: 0 8px 32px rgba(255, 202, 212, 0.3);
            flex-wrap: wrap;
            align-items: center;
        }

        #scoreText {
            font-size: 24px;
            font-weight: 900;
            color: #D00000;
            vertical-align: middle;
        }

        .canvas-container {
            position: relative;
            width: 100%;
            max-width: 400px;
            aspect-ratio: 1 / 1;
        }

        canvas {
            background-color: #FFFFFF;
            border: 6px solid #D8E2DC;
            border-radius: 12px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
            width: 100%;
            height: 100%;
            display: block;
        }

        #gameOverOverlay {
            display: none;
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 100;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-family: 'Segoe UI', sans-serif;
            text-align: center;
            pointer-events: none;
        }

        #gameOverOverlay.visible {
            display: flex;
        }

        #gameOverOverlay .go-title {
            font-size: 42px;
            font-weight: 900;
            color: #8B0000;
            text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.5);
            animation: floatUpDown 1.5s infinite ease-in-out;
        }

        #gameOverOverlay .go-sub {
            font-size: 28px;
            font-weight: 800;
            color: #FFD700;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            margin-top: 4px;
            animation: floatUpDown 1.5s infinite reverse ease-in-out;
        }

        @keyframes floatUpDown {
            0%   { transform: translateY(-5px) rotate(-3deg); }
            50%  { transform: translateY(5px) rotate(3deg); }
            100% { transform: translateY(-5px) rotate(-3deg); }
        }

        #gameOverOverlay .go-extra {
            font-size: 16px;
            font-weight: 700;
            color: #8B0000;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
            margin-top: 8px;
        }

        @keyframes pastelSparkle {
            0%   { opacity: 0.8; color: #FFCAD4; border-color: #FFCAD4; text-shadow: 0 0 5px #FFCAD4;  transform: scale(1); }
            50%  { opacity: 1;   color: #B5EAD7; border-color: #B5EAD7; text-shadow: 0 0 10px #B5EAD7; transform: scale(1.05); }
            100% { opacity: 0.8; color: #C7CEEA; border-color: #C7CEEA; text-shadow: 0 0 5px #C7CEEA;  transform: scale(1); }
        }

        #gameOverOverlay .go-hint {
            font-size: 16px;
            font-weight: bold;
            color: #FFCAD4;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
            margin-top: 18px;
            padding: 8px 16px;
            border: 3px dashed #FFCAD4;
            border-radius: 12px;
            background: rgba(0, 0, 0, 0.6);
            animation: pastelSparkle 1.2s infinite alternate ease-in-out;
        }

        #freeRoamContainer {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            pointer-events: none;
            z-index: 9999;
            overflow: hidden;
        }

        .menu-container {
            margin-bottom: 10px;
            text-align: center;
            display: flex;
            gap: 5px;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, 0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 10px;
            border-radius: 18px;
            border: 6px solid #C7CEEA;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        select,
        .action-btn {
            padding: 8px;
            border-radius: 10px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #9D8189;
            font-weight: bold;
            outline: none;
            cursor: pointer;
            font-family: inherit;
            background-color: rgba(255, 255, 255, 0.6);
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .action-btn:hover {
            background-color: #FFF;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .pause-btn {
            background-color: rgba(255, 243, 176, 0.7);
            border-color: #E2D47B;
            color: #8C7B25;
            backdrop-filter: blur(4px);
        }

        .pause-btn:hover {
            background-color: rgba(255, 248, 214, 0.9);
        }

        .speed-box {
            border: 6px solid #B5EAD7;
            padding: 18px 10px 10px 10px;
            border-radius: 18px;
            position: relative;
            margin-bottom: 15px;
            background: rgba(255, 255, 255, 0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            width: 100%;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            align-items: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        .speed-box::before {
            content: "เลือกระดับความเร็ว";
            position: absolute;
            top: -12px;
            left: 20px;
            background: #B5EAD7;
            padding: 2px 10px;
            font-size: 12px;
            color: #3D6B5B;
            font-weight: bold;
            border-radius: 5px;
        }

        .speed-controls {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .speed-btn {
            background-color: #E8E8E4;
            color: #9D8189;
            border: 2px solid #D8E2DC;
            padding: 6px 10px;
            font-size: 13px;
            font-weight: bold;
            border-radius: 15px;
            cursor: pointer;
            transition: 0.2s;
        }

        .speed-btn.active {
            background-color: #FFB7B2;
            color: white;
            border-color: #F4ACB7;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        .d-pad {
            display: grid;
            grid-template-columns: repeat(3, min(90px, 25vw));
            grid-template-rows: repeat(3, min(90px, 25vw));
            gap: 10px;
            margin-top: 25px;
            width: 100%;
            justify-content: center;
        }

        .d-pad button {
            background-color: #FFF;
            border: 3px solid #D8E2DC;
            border-radius: 18px;
            font-size: min(45px, 12vw);
            cursor: pointer;
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.08);
            touch-action: manipulation;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            width: 100%;
            height: 100%;
        }

        .d-pad button:active {
            background-color: #FFCAD4;
            transform: scale(0.95);
        }

        .d-pad .up    { grid-column: 2; grid-row: 1; }
        .d-pad .left  { grid-column: 1; grid-row: 2; }
        .d-pad .right { grid-column: 3; grid-row: 2; }
        .d-pad .down  { grid-column: 2; grid-row: 3; }

        .d-pad .center-deco {
            grid-column: 2;
            grid-row: 2;
            background-color: #FFE5D9;
            border-radius: 50%;
            margin: 20%;
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .restart-btn {
            margin-top: 25px;
            background-color: #E63946;
            color: #ffffff;
            border: 2px solid #900000;
            padding: 12px 25px;
            font-size: 16px;
            font-weight: bold;
            border-radius: 10px;
            cursor: pointer;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 10000;
        }

        .restart-btn:hover {
            background-color: #D62828;
        }

        .version-tag {
            font-size: 14px;
            color: #4A4E69;
            margin-top: 30px;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            text-align: center;
        }

        @media (max-width: 768px) {
            .main-wrapper {
                flex-direction: column;
                align-items: center;
            }
            .left-column {
                width: 100%;
                max-width: 420px;
                /* วิธีเล่น → กระดานคะแนน */
                display: flex;
                flex-direction: column;
            }

            /* ลำดับ mobile: ตัวเกม → d-pad → เลือกด่าน → วิธีเล่น → กระดานคะแนน */
            .game-panel { order: 1; width: 100%; max-width: 420px; }
            .left-column { order: 2; }

            /* ภายใน game-panel */
            .game-panel .stats-container  { order: 1; }
            .game-panel .canvas-container  { order: 2; }
            .game-panel .d-pad             { order: 3; }
            .game-panel .restart-btn       { order: 4; }
            .game-panel .menu-container    { order: 5; }
            .game-panel .speed-box         { order: 6; }

            /* ภายใน left-column */
            .left-column .instructions-panel { order: 1; }
            .left-column .leaderboard-panel  { order: 2; }
        }

        body.force-mobile .main-wrapper {
            flex-direction: column !important;
            align-items: center !important;
        }

        body.force-mobile .left-column {
            width: 100% !important;
            max-width: 420px !important;
            display: flex !important;
            flex-direction: column !important;
        }

        body.force-mobile .game-panel { order: 1 !important; width: 100% !important; max-width: 420px !important; }
        body.force-mobile .left-column { order: 2 !important; }

        body.force-mobile .game-panel .stats-container  { order: 1 !important; }
        body.force-mobile .game-panel .canvas-container  { order: 2 !important; }
        body.force-mobile .game-panel .d-pad             { order: 3 !important; }
        body.force-mobile .game-panel .restart-btn       { order: 4 !important; }
        body.force-mobile .game-panel .menu-container    { order: 5 !important; }
        body.force-mobile .game-panel .speed-box         { order: 6 !important; }

        body.force-mobile .left-column .instructions-panel { order: 1 !important; }
        body.force-mobile .left-column .leaderboard-panel  { order: 2 !important; }