* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-0: #070b14;
    --bg-1: #0f1730;
    --line-top: #00f5ff;
    --line-bottom: #ff006e;
    --accent: #ffe600;
    --ok: #00ff88;
    --panel: rgba(10, 14, 29, 0.84);
    --panel-border: rgba(255, 255, 255, 0.14);
    --text: #f6fbff;
    --muted: rgba(230, 244, 255, 0.7);
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: radial-gradient(circle at 22% 15%, #123063 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, #2d0b3d 0%, transparent 36%),
        linear-gradient(145deg, var(--bg-0), var(--bg-1));
    color: var(--text);
    font-family: 'Chakra Petch', sans-serif;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: none;
}

#gameCanvas {
    display: block;
    width: 100vw;
    height: 100vh;
}

.back-link {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 1200;
    text-decoration: none;
    color: var(--muted);
    font-size: 0.86rem;
    letter-spacing: 0.06em;
    background: rgba(0, 0, 0, 0.28);
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 999px;
    transition: 0.18s ease;
}

.back-link:hover {
    color: var(--text);
    border-color: rgba(255, 255, 255, 0.34);
}

.overlay {
    position: fixed;
    inset: 0;
    z-index: 15;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    transition: opacity 0.24s ease, transform 0.24s ease;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.98);
}

.panel {
    width: min(430px, 100%);
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 22px;
    padding: 30px 24px;
    text-align: center;
    backdrop-filter: blur(18px);
    box-shadow: 0 24px 90px rgba(0, 0, 0, 0.42),
        inset 0 0 18px rgba(255, 255, 255, 0.06);
}

.title {
    font-family: 'Bungee', sans-serif;
    font-size: clamp(2rem, 11vw, 3.2rem);
    letter-spacing: 0.06em;
    color: #fff;
    text-shadow: 0 0 24px rgba(0, 245, 255, 0.55), 0 0 48px rgba(255, 0, 110, 0.32);
}

.subtitle {
    margin-top: 8px;
    margin-bottom: 26px;
    color: var(--muted);
    letter-spacing: 0.16em;
    font-size: 0.8rem;
}

.best-row {
    display: inline-flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 20px;
    color: #d9ecff;
}

.best-row span {
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    opacity: 0.8;
}

.best-row strong {
    font-size: 2rem;
    color: var(--accent);
    text-shadow: 0 0 16px rgba(255, 230, 0, 0.4);
}

.btn {
    width: 100%;
    border: 0;
    border-radius: 14px;
    padding: 14px 16px;
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform 0.14s ease, filter 0.14s ease;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, #00d8ff, #00f5ff 35%, #ff006e 100%);
    color: #050913;
}

.btn-primary:hover {
    filter: brightness(1.06);
}

.btn-secondary {
    margin-top: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #fff;
}

.hint {
    margin-top: 14px;
    color: var(--muted);
    font-size: 0.82rem;
    letter-spacing: 0.05em;
}

.over-title {
    font-family: 'Bungee', sans-serif;
    letter-spacing: 0.08em;
    font-size: 1.7rem;
    margin-bottom: 4px;
}

.over-game-name {
    font-size: 0.78rem;
    letter-spacing: 0.24em;
    color: var(--muted);
    margin-bottom: 12px;
}

.score-label {
    font-size: 0.73rem;
    letter-spacing: 0.2em;
    color: var(--muted);
}

.score-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent);
    margin-top: 4px;
    text-shadow: 0 0 18px rgba(255, 230, 0, 0.45);
}

.stats {
    margin: 16px 0 18px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.64rem;
    letter-spacing: 0.12em;
    color: var(--muted);
}

.button-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.share-feedback {
    margin-top: 12px;
    font-size: 0.78rem;
    color: var(--ok);
}

.share-feedback.hidden {
    visibility: hidden;
}

.hud {
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 12;
    display: flex;
    gap: 8px;
}

.hud.hidden {
    display: none;
}

.hud-chip {
    background: rgba(3, 8, 20, 0.58);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    padding: 8px 12px;
    min-width: 88px;
    text-align: center;
}

.hud-chip span {
    display: block;
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    color: var(--muted);
}

.hud-chip strong {
    display: block;
    margin-top: 2px;
    font-size: 1rem;
}

@media (max-width: 560px) {
    .back-link {
        top: 10px;
        left: 10px;
        font-size: 0.75rem;
        padding: 7px 10px;
    }

    .panel {
        padding: 24px 16px;
    }

    .button-row {
        grid-template-columns: 1fr;
    }

    .hud {
        gap: 6px;
        top: 10px;
    }

    .hud-chip {
        min-width: 78px;
        padding: 7px 9px;
    }
}