* {
    box-sizing: border-box;
}

:root {
    --bg: #050a19;
    --panel: rgba(255, 255, 255, 0.04);
    --panel-strong: rgba(255, 255, 255, 0.08);
    --border: rgba(255, 255, 255, 0.1);
    --glow: #22d3ee;
    --accent: #f59e0b;
    --text: #e2e8f0;
    --muted: #94a3b8;
}

body {
    font-family: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    margin: 0;
    min-height: auto;
    background: radial-gradient(circle at 20% 20%, rgba(34, 211, 238, 0.08), transparent 35%),
                radial-gradient(circle at 80% 0%, rgba(245, 158, 11, 0.08), transparent 30%),
                linear-gradient(145deg, #040814 0%, #060b18 50%, #050a19 100%);
    color: var(--text);
    overflow-x: hidden;
    position: relative;
    padding: 16px 12px 16px;
}

.atmosphere {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.orb {
    position: absolute;
    width: 360px;
    height: 360px;
    filter: blur(120px);
    opacity: 0.35;
    border-radius: 50%;
}

.orb-a {
    background: #22d3ee;
    top: 5%;
    left: 12%;
}

.orb-b {
    background: #f59e0b;
    bottom: 5%;
    right: 10%;
}

.orb-c {
    background: #60a5fa;
    top: 55%;
    left: -8%;
}

.page {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.eyebrow {
    letter-spacing: 0.08em;
    font-size: 0.78rem;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0;
}

.hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.btn {
    border: 1px solid var(--border);
    background: linear-gradient(120deg, rgba(34, 211, 238, 0.14), rgba(255, 255, 255, 0.04));
    color: var(--text);
    padding: 10px 16px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease, border 120ms ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(34, 211, 238, 0.2);
    border-color: rgba(34, 211, 238, 0.35);
}

.btn.ghost {
    background: rgba(255, 255, 255, 0.04);
}

.game-wrapper {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(220px, 260px);
    gap: 16px;
    align-items: start;
}

.board-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.board-column .canvas-shell,
.board-column .controls-card {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    width: 100%;
}

.stat-chip {
    border: 1px solid var(--border);
    background: var(--panel);
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--muted);
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-chip span {
    color: var(--text);
    font-weight: 600;
}

.canvas-shell {
    position: relative;
    padding: 10px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

#gameCanvas {
    display: block;
    width: 100%;
    height: auto;
    max-width: 500px;
    margin: 0 auto;
    touch-action: none;
    border-radius: 12px;
    background: #0b1224;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02), 0 12px 40px rgba(0, 0, 0, 0.3);
}

.status-pill {
    position: absolute;
    top: 12px;
    right: 16px;
    padding: 7px 14px;
    border-radius: 999px;
    background: linear-gradient(135deg, #facc15, #22d3ee);
    color: #020617;
    font-weight: 700;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.85);
    box-shadow: 0 12px 30px rgba(34, 211, 238, 0.35), 0 0 25px rgba(250, 204, 21, 0.55);
    letter-spacing: 0.04em;
}

.overlay-card {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    text-align: center;
    background: rgba(5, 10, 25, 0.8);
    border-radius: 12px;
    color: var(--text);
    padding: 20px;
    border: 1px solid var(--border);
    backdrop-filter: blur(6px);
}

.overlay-card .label {
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 6px;
}

.overlay-card p:last-child {
    margin: 0;
}

.controls-card {
    border: 1px solid var(--border);
    background: var(--panel);
    padding: 12px 14px;
    border-radius: 12px;
    color: var(--muted);
    line-height: 1.5;
    font-size: 0.95rem;
}

.controls-card p {
    margin: 4px 0;
}

.info-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}

.info-card {
    border: 1px solid var(--border);
    background: var(--panel);
    border-radius: 12px;
    padding: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    color: var(--muted);
}

.card-header h3 {
    margin: 0;
    font-size: 1rem;
    color: var(--text);
}

.hint {
    border: 1px solid var(--border);
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--muted);
}

#nextPieceCanvas,
#holdPieceCanvas {
    background: #0b1224;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: block;
    margin: 0 auto;
    max-width: 100px;
    width: 100%;
    height: auto;
}

#leaderboard h2,
#leaderboard h3 {
    margin: 0 0 10px;
}

#highScores {
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

#highScores li {
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    background: rgba(255, 255, 255, 0.02);
}

#highScores li + li {
    margin-top: 6px;
}

.music-toggle-container {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.music-toggle-row {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.music-toggle-label {
    font-size: 0.95rem;
    color: var(--muted);
}

.now-playing-inline {
    font-size: 0.8rem;
    color: var(--muted);
}

.ios-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.ios-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #334155;
    transition: 0.3s;
    border-radius: 28px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.25);
}

input:checked + .slider {
    background-color: var(--glow);
}

input:checked + .slider:before {
    transform: translateX(22px);
}

.copyright-footer {
    margin-top: 28px;
    margin-bottom: 0;
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
}

@media (max-width: 880px) {
    body {
        padding: 20px 12px 28px;
    }

    .game-wrapper {
        grid-template-columns: 1fr;
    }

    .info-column {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

@media (max-width: 640px) {
    .hero {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-actions {
        width: 100%;
    }

    .stat-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }
}