:root {
    --bg-deep: #05060f;
    --bg-deep-2: #0c0f24;
    --panel: rgba(22, 24, 46, 0.68);
    --panel-border: rgba(126, 249, 255, 0.18);
    --accent-cyan: #7ef9ff;
    --accent-purple: #a78bfa;
    --accent-gold: #ffd166;
    --accent-pink: #ff6fb5;
    --text: #eef1ff;
    --text-dim: #9aa3c7;
    --danger: #ff6161;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
}

body {
    background:
        radial-gradient(circle at 15% -10%, rgba(167, 139, 250, 0.25), transparent 45%),
        radial-gradient(circle at 85% 0%, rgba(126, 249, 255, 0.16), transparent 45%),
        linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-deep-2) 55%, var(--bg-deep) 100%);
    color: var(--text);
    background-attachment: fixed;
}

.page {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 16px 48px;
}

/* --- Header --------------------------------------------------------- */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 980px;
    margin: 0 auto;
    padding: 18px 16px 8px;
}
.brand {
    font-weight: 700;
    letter-spacing: 0.14em;
    font-size: 0.8rem;
    color: var(--text-dim);
}
.site-nav {
    display: flex;
    align-items: center;
    gap: 18px;
}
.site-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    color: var(--text-dim);
}
.site-nav a:hover { color: var(--text); }
.nav-lb-btn {
    background: linear-gradient(135deg, rgba(126, 249, 255, 0.15), rgba(167, 139, 250, 0.15));
    border: 1px solid var(--panel-border);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}
.nav-lb-btn:hover { border-color: var(--accent-cyan); }

/* --- Ad slots --------------------------------------------------------- */
.ad-slot {
    max-width: 980px;
    margin: 18px auto;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.25);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* --- Game card -------------------------------------------------------- */
.game-card {
    max-width: 640px;
    margin: 10px auto 0;
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 28px 22px 24px;
    backdrop-filter: blur(18px);
    box-shadow: 0 0 60px rgba(126, 249, 255, 0.07), 0 20px 50px rgba(0, 0, 0, 0.35);
    position: relative;
    overflow: hidden;
}

.game-title {
    text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: 800;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 4px;
}

.screen {
    text-align: center;
    padding-top: 6px;
}

.tagline {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
    margin-top: 6px;
}
.sub {
    color: var(--text-dim);
    margin-top: 6px;
    font-size: 0.95rem;
}

.btn {
    display: inline-block;
    margin-top: 20px;
    padding: 14px 38px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.02em;
    touch-action: manipulation;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: #051018;
    box-shadow: 0 10px 30px rgba(126, 249, 255, 0.25);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(126, 249, 255, 0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.14);
}
.btn-secondary:hover { border-color: var(--accent-cyan); }

.best-line {
    margin-top: 16px;
    color: var(--text-dim);
    font-size: 0.9rem;
}
.best-line span { color: var(--accent-gold); font-weight: 700; }

.btn-link {
    display: inline-block;
    margin-top: 14px;
    color: var(--text-dim);
    font-size: 0.85rem;
    text-decoration: underline;
    text-underline-offset: 3px;
}
.btn-link:hover { color: var(--accent-cyan); }

.hint-line {
    margin-top: 18px;
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.28);
}

/* --- Result screen ------------------------------------------------------ */
#result-milestone {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 0.04em;
    margin-top: 4px;
}
.result-headline { font-size: 0.85rem; color: var(--text-dim); margin-top: 8px; }
#result-time {
    display: block;
    font-size: clamp(2.4rem, 9vw, 3.4rem);
    font-weight: 800;
    margin-top: 6px;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.badge {
    display: inline-block;
    margin-top: 10px;
    padding: 6px 16px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(255, 209, 102, 0.22), rgba(255, 111, 181, 0.22));
    border: 1px solid rgba(255, 209, 102, 0.4);
    color: var(--accent-gold);
    font-weight: 700;
    font-size: 0.85rem;
    animation: badgePop 0.5s ease;
}
@keyframes badgePop {
    0% { transform: scale(0.6); opacity: 0; }
    60% { transform: scale(1.08); opacity: 1; }
    100% { transform: scale(1); }
}
#result-compare { display: block; margin-top: 8px; color: var(--text-dim); font-size: 0.85rem; min-height: 1.2em; }
#result-retry-line { display: block; margin-top: 2px; font-size: 0.9rem; color: var(--text); font-weight: 600; }

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 20px;
}
.stat-tile {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    padding: 10px 6px;
}
.stat-label { display: block; font-size: 0.62rem; letter-spacing: 0.06em; color: var(--text-dim); text-transform: uppercase; }
.stat-value { display: block; font-size: 1.05rem; font-weight: 700; margin-top: 4px; }

.result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 22px;
}
.result-actions .btn { margin-top: 0; padding: 12px 22px; font-size: 0.92rem; }

.nickname-box {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.nickname-box label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}
.nickname-row { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
#nickname-input {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: var(--text);
    width: 200px;
    max-width: 60vw;
}
#nickname-input:focus { border-color: var(--accent-cyan); }
#btn-save-nickname {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    background: rgba(126, 249, 255, 0.14);
    border: 1px solid var(--panel-border);
    font-weight: 600;
    font-size: 0.85rem;
}
#btn-save-nickname:disabled { opacity: 0.5; cursor: default; }
.rank-line { margin-top: 10px; font-size: 0.85rem; color: var(--text-dim); }
.rank-line span { color: var(--accent-gold); font-weight: 700; }
.field-error { margin-top: 8px; color: var(--danger); font-size: 0.8rem; }

/* --- Modals -------------------------------------------------------------- */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(3, 4, 12, 0.72);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 200;
}
.modal-panel {
    background: #0d0f22;
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 420px;
    max-height: 82vh;
    overflow-y: auto;
    padding: 20px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.modal-header h2 { font-size: 1.1rem; font-weight: 700; }
.modal-close {
    font-size: 1.3rem;
    line-height: 1;
    padding: 4px 8px;
    color: var(--text-dim);
}
.modal-close:hover { color: var(--text); }

.lb-tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.lb-tab {
    flex: 1;
    padding: 8px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
}
.lb-tab.active { background: rgba(126, 249, 255, 0.14); color: var(--accent-cyan); border-color: var(--panel-border); }

.lb-list { display: flex; flex-direction: column; gap: 4px; max-height: 340px; overflow-y: auto; }
.lb-row {
    display: grid;
    grid-template-columns: 44px 1fr auto;
    gap: 8px;
    align-items: center;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
}
.lb-row:nth-child(odd) { background: rgba(255, 255, 255, 0.03); }
.lb-rank { color: var(--text-dim); font-weight: 700; font-size: 0.85rem; }
.lb-name { font-size: 0.9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-time { font-weight: 700; color: var(--accent-gold); font-size: 0.9rem; }
.lb-status { text-align: center; padding: 20px 0; color: var(--text-dim); font-size: 0.85rem; }

/* --- SEO content sections ------------------------------------------------ */
.info-section {
    max-width: 720px;
    margin: 40px auto 0;
    padding: 0 6px;
}
.info-section h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}
.info-section p, .info-section li {
    color: var(--text-dim);
    line-height: 1.7;
    font-size: 0.95rem;
}
.info-section ol { padding-left: 1.2rem; list-style: decimal; }
.info-section ol li { margin-bottom: 6px; }
.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}
.tag-chip {
    font-size: 0.75rem;
    color: var(--text-dim);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 5px 12px;
    border-radius: 999px;
}

/* --- More games ---------------------------------------------------------- */
.more-games { max-width: 900px; margin: 40px auto 0; padding: 0 6px; }
.more-games h2 { font-size: 1.15rem; margin-bottom: 14px; }
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}
.game-grid a {
    display: block;
    text-decoration: none;
    padding: 16px 10px;
    text-align: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
    transition: border-color 0.15s ease, color 0.15s ease;
}
.game-grid a:hover { border-color: var(--accent-cyan); color: var(--text); }

/* --- Footer --------------------------------------------------------------- */
.site-footer {
    max-width: 980px;
    margin: 50px auto 0;
    padding: 20px 16px 40px;
    text-align: center;
    color: rgba(255, 255, 255, 0.28);
    font-size: 0.78rem;
}
.site-footer a { color: rgba(255, 255, 255, 0.4); text-decoration: underline; text-underline-offset: 2px; }

/* --- Mobile: hide chrome during active play (concept immersive focus) --- */
@media (max-width: 640px) {
    body.in-game .site-header,
    body.in-game .ad-slot,
    body.in-game .info-section,
    body.in-game .more-games,
    body.in-game .site-footer,
    body.in-game .game-title {
        display: none;
    }
    body.in-game .game-card {
        border-radius: 0;
        border: none;
        padding: 10px 8px 14px;
        min-height: 100dvh;
    }
    /* Deliberate invisible slack below the fold so the page always has
       real scrollable content during mobile play — an all-hidden-chrome
       layout with a 100dvh shell otherwise leaves nothing to scroll to,
       even once every scroll-blocking mechanism is correctly disabled
       (a lesson this project has learned the hard way in another game). */
    body.in-game .page { padding-bottom: 60px; }
}

@media (max-width: 480px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
}