* { margin: 0; padding: 0; box-sizing: border-box; touch-action: none; }
        :root { --sat: env(safe-area-inset-top, 0px); }
        html, body {
            width: 100%; height: 100%;
            overflow: hidden;
            background: #EDF2F8;
            font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
            /* Disable all touch browser behaviours (scroll, zoom, etc.) */
            touch-action: none;
            -webkit-touch-callout: none;
            -webkit-user-select: none;
            user-select: none;
        }
        /* Game container: covers entire viewport including safe areas (notch, etc.) */
        #wrap {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            overflow: hidden;
        }
        canvas { display: block; width: 100%; height: 100%; will-change: transform; }

        /* ── Modal overlay for Game Over / Completion popups ── */
        #modal {
            position: absolute; inset: 0;
            display: flex; align-items: center; justify-content: center;
            z-index: 10;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none; /* Hidden by default — clicks pass through */
        }
        #modal.show { opacity: 1; pointer-events: auto; }
        .card {
            background: #fff;
            border-radius: 20px;
            border: 1px solid rgba(99, 102, 241, 0.16);
            padding: 36px 28px 28px;
            text-align: center;
            max-width: 340px; width: 85%;
            box-shadow: 0 28px 60px rgba(15, 23, 42, 0.22), 0 0 0 8px rgba(255,255,255,0.55);
            transform: translateY(16px) scale(0.97);
            transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1); /* Springy pop-in */
        }
        #modal.show .card { transform: translateY(0) scale(1); }
        .card h2 {
            font-size: 22px; font-weight: 800;
            color: #0f172a; margin-bottom: 14px;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .card p {
            font-size: 22px; color: #64748b;
            font-weight: 600;
            margin-bottom: 24px; line-height: 1.5;
        }
        .btn {
            display: block; width: 100%;
            padding: 14px 0; border: none; border-radius: 14px;
            font-size: 16px; font-weight: 700;
            cursor: pointer; outline: none;
            -webkit-tap-highlight-color: transparent;
            transition: transform 0.1s;
        }
        .btn:active { transform: scale(0.96); }
        .btn-main { background: #6366f1; color: #fff; }
        .btn-ghost { background: transparent; color: #6366f1; margin-top: 4px; }
        .modal-brand {
            font-size: 11px; font-weight: 700; letter-spacing: 0.5px;
            text-transform: uppercase; color: #6366f1;
            margin-bottom: 6px !important; opacity: 0.7;
        }
        .modal-detail {
            font-size: 13px; color: #7C8AA5;
            margin-bottom: 20px !important; line-height: 1.4;
        }
        .modal-detail span {
            display: block; font-variant-numeric: tabular-nums;
        }
        .modal-avatar {
            width: 68px; height: 68px;
            margin: -52px auto 10px;
            display: none;
        }
        .modal-avatar svg {
            width: 100%; height: 100%;
            filter: drop-shadow(0 4px 10px rgba(99,102,241,0.25));
        }

        /* ── Settings cog button ── */
        #settings-btn {
            position: absolute;
            top: max(22px, env(safe-area-inset-top, 0px) + 22px);
            right: max(12px, env(safe-area-inset-right, 0px) + 4px, calc(50% - 300px));
            z-index: 5;
            width: 48px; height: 48px;
            background: none;
            border: none;
            cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            -webkit-tap-highlight-color: transparent;
            transition: transform 0.1s, opacity 0.2s;
        }
        #settings-btn:active { transform: scale(0.88); }
        #settings-btn svg { width: 32px; height: 32px; fill: #7C8AA5; }

        /* ── Settings modal ── */
        #settings-overlay {
            position: absolute; inset: 0;
            display: flex; align-items: center; justify-content: center;
            z-index: 20;
            background: transparent;
            opacity: 0;
            transition: opacity 0.25s ease;
            pointer-events: none;
        }
        #settings-overlay.show { opacity: 1; pointer-events: auto; }
        #settings-overlay .card {
            padding: 28px 24px 20px;
        }
        #settings-overlay.show .card { transform: translateY(0) scale(1); }

        .toggle-row {
            display: flex; align-items: center; justify-content: space-between;
            padding: 14px 0;
        }
        .toggle-row + .toggle-row { border-top: 1px solid #f1f5f9; }
        .toggle-label { font-size: 15px; font-weight: 600; color: #334155; }
        .toggle {
            position: relative;
            width: 48px; height: 28px;
            background: #cbd5e1;
            border: none; border-radius: 14px;
            cursor: pointer;
            transition: background 0.2s;
            -webkit-tap-highlight-color: transparent;
            flex-shrink: 0;
        }
        .toggle.on { background: #6366f1; }
        .toggle::after {
            content: '';
            position: absolute;
            top: 3px; left: 3px;
            width: 22px; height: 22px;
            background: #fff;
            border-radius: 50%;
            transition: transform 0.2s;
            box-shadow: 0 1px 3px rgba(0,0,0,0.15);
        }
        .toggle.on::after { transform: translateX(20px); }

        /* ── Volume slider ── */
        .slider-row {
            display: flex; align-items: center; justify-content: space-between;
            padding: 10px 0 14px;
            border-top: 1px solid #f1f5f9;
        }
        .vol-slider {
            -webkit-appearance: none; appearance: none;
            width: 120px; height: 6px;
            background: #e2e8f0; border-radius: 3px; outline: none;
        }
        .vol-slider::-webkit-slider-thumb {
            -webkit-appearance: none; appearance: none;
            width: 22px; height: 22px;
            background: #6366f1; border-radius: 50%;
            cursor: pointer;
            box-shadow: 0 1px 4px rgba(0,0,0,0.15);
        }
        .vol-slider::-moz-range-thumb {
            width: 22px; height: 22px;
            background: #6366f1; border: none; border-radius: 50%;
            cursor: pointer;
            box-shadow: 0 1px 4px rgba(0,0,0,0.15);
        }

        /* ── Stats / Trophy button ── */
        #stats-btn {
            position: absolute;
            top: max(22px, env(safe-area-inset-top, 0px) + 22px);
            left: max(12px, env(safe-area-inset-left, 0px) + 4px, calc(50% - 300px));
            z-index: 5;
            width: 48px; height: 48px;
            background: none;
            border: none;
            cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            -webkit-tap-highlight-color: transparent;
            transition: transform 0.1s, opacity 0.2s;
        }
        #stats-btn:active { transform: scale(0.88); }
        #stats-btn svg { width: 32px; height: 32px; fill: #7C8AA5; }

        /* ── Stats modal ── */
        #stats-overlay {
            position: absolute; inset: 0;
            display: flex; align-items: center; justify-content: center;
            z-index: 20;
            background: transparent;
            opacity: 0;
            transition: opacity 0.25s ease;
            pointer-events: none;
        }
        #stats-overlay.show { opacity: 1; pointer-events: auto; }
        #stats-overlay .card {
            padding: 28px 24px 20px;
            max-width: 320px;
            max-height: 80vh;
            overflow-x: hidden;
            overflow-y: auto;
            -webkit-overflow-scrolling: touch;
            touch-action: pan-y;
        }
        #stats-overlay.show .card { transform: translateY(0) scale(1); }
        #stats-overlay .card * { touch-action: pan-y; }
        .stats-section {
            text-align: left;
            padding: 14px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .stats-section-title {
            font-size: 11px; font-weight: 700;
            text-transform: uppercase; letter-spacing: 0.5px;
            color: #7C8AA5; margin-bottom: 10px;
            text-align: center;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }
        .stat-item { text-align: center; }
        .stat-value {
            font-size: 22px; font-weight: 800;
            color: #0f172a; letter-spacing: -0.5px;
            font-variant-numeric: tabular-nums;
        }
        .stat-label {
            font-size: 11px; font-weight: 600;
            color: #7C8AA5; margin-top: 2px;
        }
        .trophy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
        }
        .trophy-item {
            display: flex; flex-direction: column;
            align-items: center; text-align: center;
            padding: 12px 4px;
            border-radius: 12px;
            background: #f8fafc;
            border: 1px solid #e2e8f0;
        }
        .trophy-item.unlocked {
            background: linear-gradient(135deg, #fef9c3, #fef3c7);
            border-color: #fbbf24;
        }
        .trophy-icon { font-size: 24px; margin-bottom: 4px; }
        .trophy-item:not(.unlocked) .trophy-icon { filter: grayscale(1); opacity: 0.3; }
        .trophy-name {
            font-size: 10px; font-weight: 700;
            color: #64748b; line-height: 1.2;
        }
        .trophy-item.unlocked .trophy-name { color: #92400e; }
        .trophy-tooltip {
            position: absolute;
            left: 50%; transform: translateX(-50%);
            bottom: calc(100% + 8px);
            background: #1e293b;
            color: #f8fafc;
            font-size: 11px; font-weight: 600;
            padding: 6px 12px;
            border-radius: 8px;
            white-space: nowrap;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.15s ease;
            z-index: 30;
        }
        .trophy-tooltip.visible { opacity: 1; }
        .trophy-tooltip::after {
            content: '';
            position: absolute;
            top: 100%; left: 50%;
            transform: translateX(-50%);
            border: 5px solid transparent;
            border-top-color: #1e293b;
        }
        .trophy-item { position: relative; cursor: pointer; -webkit-tap-highlight-color: transparent; }
        .stat-best-sub {
            font-size: 10px; font-weight: 600;
            color: #7C8AA5; margin-top: 1px;
        }

        /* ── Privacy & Terms link ── */
        .legal-row {
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }

        /* ── Level select modal ── */
        #level-select {
            position: absolute; inset: 0;
            display: flex; align-items: center; justify-content: center;
            z-index: 25;
            background: rgba(15, 23, 42, 0.45);
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }
        #level-select.show { opacity: 1; pointer-events: auto; }
        #level-select .card {
            padding: 28px 24px 24px;
            max-width: 320px;
            position: relative;
        }
        #level-select.show .card { transform: translateY(0) scale(1); }
        .ls-wrap {
            display: flex; align-items: center; gap: 10px;
        }
        .ls-arrow {
            width: 40px; height: 40px; flex-shrink: 0;
            background: none; border: none; cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            border-radius: 50%;
            transition: background 0.15s, opacity 0.15s;
            -webkit-tap-highlight-color: transparent;
        }
        .ls-arrow:active { background: rgba(99,102,241,0.1); }
        .ls-arrow svg { width: 22px; height: 22px; fill: #6366f1; }
        .ls-arrow:disabled { opacity: 0.2; cursor: default; }
        .ls-arrow:disabled:active { background: none; }
        .ls-card {
            flex: 1; text-align: center;
        }
        .ls-image {
            width: 100%; aspect-ratio: 16/10;
            border-radius: 14px;
            display: flex; align-items: center; justify-content: center;
            position: relative;
            overflow: hidden;
        }
        #ls-char {
            filter: drop-shadow(0 4px 12px rgba(0,0,0,0.2));
        }
        .ls-lock-overlay {
            position: absolute; inset: 0;
            background: rgba(15, 23, 42, 0.65);
            display: flex; flex-direction: column;
            align-items: center; justify-content: center;
            border-radius: 14px;
        }
        .ls-lock-icon {
            font-size: 28px; margin-bottom: 4px;
        }
        .ls-lock-text {
            font-size: 11px; font-weight: 700;
            color: rgba(255,255,255,0.8);
            text-transform: uppercase; letter-spacing: 0.3px;
        }
        .ls-title {
            font-size: 20px; font-weight: 800;
            color: #0f172a; margin-top: 14px;
            letter-spacing: -0.5px;
        }
        .ls-dots {
            display: flex; justify-content: center;
            gap: 6px; margin-top: 16px;
        }
        .ls-dot {
            width: 7px; height: 7px; border-radius: 50%;
            background: #cbd5e1;
            transition: background 0.2s;
        }
        .ls-dot.active { background: #6366f1; }
        #ls-play {
            margin-top: 20px;
        }

        /* ── Dark mode overrides ── */
        body.dark { background: #111827; }
        .dark .card {
            background: #1e293b;
            border-color: rgba(99, 102, 241, 0.25);
            box-shadow: 0 28px 60px rgba(0, 0, 0, 0.5), 0 0 0 8px rgba(30,41,59,0.55);
        }
        .dark .card h2 { color: #f1f5f9; }
        .dark .card p { color: #94a3b8; }
        .dark .modal-detail { color: #64748b; }
        .dark .toggle-label { color: #cbd5e1; }
        .dark .toggle { background: #374151; }
        .dark .toggle.on { background: #6366f1; }
        .dark .toggle::after { background: #cbd5e1; }
        .dark .toggle.on::after { background: #fff; }
        .dark .toggle-row + .toggle-row,
        .dark .slider-row { border-top-color: #334155; }
        .dark .vol-slider { background: #374151; }
        .dark #settings-btn svg,
        .dark #stats-btn svg { fill: #64748b; }
        .dark .stats-section { border-bottom-color: #334155; }
        .dark .stats-section-title { color: #64748b; }
        .dark .stat-value { color: #f1f5f9; }
        .dark .stat-label { color: #64748b; }
        .dark .stat-best-sub { color: #64748b; }
        .dark .trophy-item {
            background: #111827;
            border-color: #334155;
        }
        .dark .trophy-item.unlocked {
            background: linear-gradient(135deg, #422006, #3b1f06);
            border-color: #b45309;
        }
        .dark .trophy-name { color: #94a3b8; }
        .dark .trophy-item.unlocked .trophy-name { color: #fbbf24; }
        .dark .trophy-tooltip {
            background: #f1f5f9;
            color: #0f172a;
        }
        .dark .trophy-tooltip::after { border-top-color: #f1f5f9; }
        .dark .ls-title { color: #f1f5f9; }
        .dark .ls-arrow svg { fill: #818cf8; }
        .dark .ls-arrow:active { background: rgba(129,140,248,0.12); }
        .dark .ls-dot { background: #374151; }
        .dark .ls-dot.active { background: #818cf8; }
        .dark #level-select { background: rgba(0, 0, 0, 0.55); }

        

        #bz-footer {
            position: absolute;
            bottom: 0; left: 0; right: 0;
            text-align: center;
            padding: 7px 0 22px;
            font-size: 13px;
            font-weight: 600;
            color: #7C8AA5;
            z-index: 3;
            display: none;
            pointer-events: auto;
            letter-spacing: 0.1px;
        }
        #bz-footer a {
            color: #6366f1;
            text-decoration: none;
        }
        #bz-footer a:hover { color: #4f46e5; }
        .dark #bz-footer { color: #4a5568; }
        .dark #bz-footer a { color: #818cf8; }
        .dark #bz-footer a:hover { color: #a5b4fc; }

        /* ── Migration banner (stats modal) ── */
        .migrate-notice {
            background: linear-gradient(135deg, #eff6ff, #eef2ff);
            border: 1px solid #c7d2fe;
            border-radius: 12px;
            padding: 14px 16px;
            margin-bottom: 16px;
            text-align: center;
        }
        .migrate-notice p {
            font-size: 12px; font-weight: 600;
            color: #4338ca; line-height: 1.4;
            margin-bottom: 10px;
        }
        .btn-migrate {
            display: block; width: 100%;
            padding: 10px 0; border: none; border-radius: 10px;
            font-size: 13px; font-weight: 700;
            cursor: pointer; background: #4f46e5; color: #fff;
            -webkit-tap-highlight-color: transparent;
            transition: transform 0.1s;
        }
        .btn-migrate:active { transform: scale(0.96); }
        .migrate-dismiss {
            display: inline-block; margin-top: 8px;
            font-size: 11px; font-weight: 600;
            color: #818cf8; background: none; border: none;
            cursor: pointer; padding: 4px 8px;
            -webkit-tap-highlight-color: transparent;
        }
        .dark .migrate-notice {
            background: linear-gradient(135deg, #1e1b4b, #312e81);
            border-color: #4338ca;
        }
        .dark .migrate-notice p { color: #a5b4fc; }
        .dark .migrate-dismiss { color: #6366f1; }