/* ============================================================
   JakBench CPU — Download Page (JakClean light theme)
   ============================================================ */

/* --- Custom Properties --- */
:root {
    --bg-top: #F7F9FF;
    --bg-bottom: #EDF1FC;
    --accent: #4F7DFF;
    --accent-deep: #3457F1;
    --accent-soft: #D9E5FF;

    --text-primary: #121A28;
    --text-secondary: #66738C;
    --text-tertiary: #99A2B5;

    --card-stroke: rgba(0, 0, 0, 0.06);
    --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 30px rgba(20, 30, 60, 0.06);

    --nav-height: 64px;
    --success: #33C759;
}

/* --- Nav Font --- */
.logo, .nav-links a, .lang-toggle {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.55;
    color: var(--text-primary);
    background: var(--bg-bottom);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.bg-gradient {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(1200px 600px at 80% -10%, rgba(79, 125, 255, 0.18), transparent 60%),
        radial-gradient(900px 500px at -10% 30%, rgba(132, 168, 255, 0.18), transparent 55%),
        linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Container --- */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--nav-height);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    background: rgba(247, 249, 255, 0.72);
    border-bottom: 1px solid var(--card-stroke);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.logo:hover { opacity: 0.65; }

.nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    gap: 2px;
}

.nav-links a {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 999px;
    transition: color 0.15s ease, background 0.15s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
    background: rgba(79, 125, 255, 0.08);
}

/* Language Toggle */
.lang-toggle {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid rgba(79, 125, 255, 0.15);
    border-radius: 999px;
    padding: 5px 12px;
    cursor: pointer;
    transition: background 0.15s ease, transform 0.15s ease;
    letter-spacing: 0.04em;
}

.lang-toggle:hover {
    background: #c7d7fe;
    transform: scale(1.04);
}

/* Hamburger */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 10px;
    transition: background 0.15s ease;
}

.nav-hamburger:hover { background: rgba(79, 125, 255, 0.08); }

.nav-hamburger span {
    display: block;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.15s ease, opacity 0.15s ease;
    transform-origin: center;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
    text-align: center;
    padding: 80px 0 40px;
    position: relative;
    z-index: 1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    max-width: 720px;
    margin: 0 auto;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--card-stroke);
    letter-spacing: 0.02em;
    backdrop-filter: blur(10px);
}

.badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 3px rgba(51, 199, 89, 0.20);
}

.hero h1 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: clamp(36px, 5.4vw, 64px);
    font-weight: 700;
    line-height: 1.06;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    max-width: 880px;
    margin: 0 auto;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: 19px;
    color: var(--text-secondary);
    max-width: 680px;
    line-height: 1.55;
    margin: 0 auto;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.hero-meta {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.meta-item svg {
    opacity: 0.5;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    padding: 14px 26px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    text-decoration: none;
}

.btn:active { transform: scale(0.97) !important; }

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    color: #fff;
    box-shadow: 0 8px 24px rgba(52, 87, 241, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(52, 87, 241, 0.45);
}

.btn-outline {
    background: white;
    color: var(--text-primary);
    border: 1px solid var(--card-stroke);
    box-shadow: var(--card-shadow);
}

.btn-outline:hover {
    transform: translateY(-2px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 18px 40px rgba(20, 30, 60, 0.10);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.82rem;
}

/* ============================================================
   Sections
   ============================================================ */
.section {
    padding: 80px 0;
    position: relative;
    z-index: 1;
    scroll-margin-top: var(--nav-height);
}

.section-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    color: var(--text-tertiary);
    text-transform: uppercase;
    margin-bottom: 32px;
}

.section h2 {
    font-size: clamp(28px, 3.4vw, 40px);
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
}

/* ============================================================
   Cards (JakClean style)
   ============================================================ */
.release-card {
    padding: 28px 32px;
    border-radius: 16px;
    background: white;
    border: 1px solid var(--card-stroke);
    box-shadow: var(--card-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.release-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 18px 40px rgba(20, 30, 60, 0.10);
}

.release-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.release-version {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: 999px;
    padding: 4px 14px;
}

.release-date {
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.release-badge {
    font-size: 0.72rem;
    font-weight: 600;
    color: #33C759;
    background: rgba(51, 199, 89, 0.10);
    border-radius: 999px;
    padding: 3px 12px;
    letter-spacing: 0.02em;
}

.release-card h3 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.release-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.release-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
}

.release-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.5;
}

/* Release download row */
.release-download {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--card-stroke);
}

.release-meta {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* ============================================================
   Platform Tabs
   ============================================================ */
.plat-controls {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}

.plat-tabs {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    background: white;
    border: 1px solid var(--card-stroke);
    border-radius: 999px;
    box-shadow: var(--card-shadow);
}

.plat-tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 999px;
    padding: 8px 18px;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
    letter-spacing: 0.02em;
}

.plat-tab:hover { color: var(--text-primary); }

.plat-tab.is-active {
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    color: #fff;
    box-shadow: 0 4px 16px rgba(79, 125, 255, 0.35);
}

.plat-timeline[hidden] { display: none; }

/* ============================================================
   Leaderboard
   ============================================================ */
.lb-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.lb-tabs {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    background: white;
    border: 1px solid var(--card-stroke);
    border-radius: 999px;
    box-shadow: var(--card-shadow);
}

.lb-tab {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 999px;
    padding: 8px 18px;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
    letter-spacing: 0.02em;
}

.lb-tab:hover { color: var(--text-primary); }

.lb-tab.is-active {
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    color: #fff;
    box-shadow: 0 4px 16px rgba(79, 125, 255, 0.35);
}

.lb-refresh {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.lb-refresh svg {
    transition: transform 0.5s ease;
}

.lb-refresh.is-loading {
    opacity: 0.6;
    pointer-events: none;
}

.lb-refresh.is-loading svg {
    animation: lb-spin 0.9s linear infinite;
}

@keyframes lb-spin {
    to { transform: rotate(360deg); }
}

.lb-panel {
    border-radius: 16px;
    overflow: hidden;
    background: white;
    border: 1px solid var(--card-stroke);
    box-shadow: var(--card-shadow);
}

.lb-table-scroll {
    overflow-x: auto;
}

.lb-table {
    width: 100%;
    border-collapse: collapse;
}

.lb-table thead th {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-tertiary);
    text-align: left;
    padding: 16px 20px;
    border-bottom: 1px solid var(--card-stroke);
}

.lb-table tbody td {
    font-size: 0.92rem;
    color: var(--text-secondary);
    padding: 14px 20px;
    border-bottom: 1px solid var(--card-stroke);
    vertical-align: middle;
}

.lb-table tbody tr:last-child td { border-bottom: none; }

.lb-table tbody tr {
    transition: background 0.15s ease;
}

.lb-table tbody tr:hover {
    background: rgba(79, 125, 255, 0.04);
}

.lb-col-rank {
    width: 64px;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 600;
    color: var(--text-tertiary);
}

.lb-col-cpu {
    color: var(--text-primary);
    font-weight: 500;
}

.lb-table thead .lb-col-score,
.lb-table thead .lb-col-runs {
    text-align: right;
}

.lb-table tbody .lb-col-score {
    width: 130px;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    text-align: right;
}

.lb-table tbody .lb-col-runs {
    width: 90px;
    text-align: right;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.lb-row-top1 .lb-col-rank,
.lb-row-top2 .lb-col-rank,
.lb-row-top3 .lb-col-rank {
    color: var(--text-primary);
}

.lb-row-top1 .lb-col-score {
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.lb-rank-medal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.72rem;
    font-weight: 700;
    color: #09090b;
}

.lb-row-top1 .lb-rank-medal { background: linear-gradient(135deg, #fde047, #f59e0b); }
.lb-row-top2 .lb-rank-medal { background: linear-gradient(135deg, #e5e7eb, #9ca3af); }
.lb-row-top3 .lb-rank-medal { background: linear-gradient(135deg, #fdba74, #c2410c); }

.lb-status {
    padding: 60px 20px;
    text-align: center;
    font-size: 0.92rem;
    color: var(--text-tertiary);
    border-top: 1px solid var(--card-stroke);
}

.lb-status--error { color: #F24D4D; }
.lb-status[hidden] { display: none; }

.lb-footer {
    display: flex;
    justify-content: center;
    margin-top: 24px;
}

#lbShowAll[hidden] { display: none; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
    padding: 40px 24px 60px;
    text-align: center;
}

.footer p {
    font-size: 13px;
    color: var(--text-tertiary);
}

.footer a {
    color: var(--text-secondary);
    transition: color 0.15s ease;
}

.footer a:hover {
    color: var(--accent);
}

/* ============================================================
   Scroll Reveal
   ============================================================ */
.reveal, [data-reveal] {
    opacity: 0;
    transform: translateY(36px);
    transition:
        opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}

.reveal.visible, [data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

[data-reveal][style*="--d"] {
    transition-delay: var(--d, 0ms);
}

@media (prefers-reduced-motion: reduce) {
    .reveal, [data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 720px) {
    .nav-hamburger { display: flex; }

    .nav-links {
        display: none;
        position: absolute;
        top: calc(var(--nav-height) + 8px);
        left: 16px;
        right: 16px;
        flex-direction: column;
        gap: 4px;
        padding: 12px;
        background: rgba(247, 249, 255, 0.95);
        -webkit-backdrop-filter: saturate(180%) blur(18px);
        backdrop-filter: saturate(180%) blur(18px);
        border: 1px solid var(--card-stroke);
        box-shadow: 0 16px 48px rgba(20, 30, 60, 0.12);
        border-radius: 16px;
    }

    .nav-links.open { display: flex; }

    .nav-links a {
        padding: 10px 16px;
        border-radius: 10px;
    }

    .hero { padding: 60px 0 30px; }

    .hero h1 { font-size: clamp(2.4rem, 7vw, 3rem); }

    .hero-buttons {
        flex-direction: column;
        gap: 10px;
        width: 100%;
    }

    .btn { width: 100%; }

    .section { padding: 56px 0; }

    .release-download {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .hero-meta {
        gap: 16px;
    }

    .lb-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .lb-tabs {
        width: 100%;
        justify-content: center;
    }

    .lb-tab {
        flex: 1;
        text-align: center;
    }

    .plat-tabs {
        width: 100%;
        justify-content: center;
    }

    .plat-tab {
        flex: 1;
        justify-content: center;
    }

    .lb-table thead th,
    .lb-table tbody td {
        padding: 12px 14px;
    }

    .lb-col-runs,
    .lb-table thead .lb-col-runs,
    .lb-table tbody .lb-col-runs {
        display: none;
    }

    .lb-table tbody .lb-col-cpu {
        font-size: 0.85rem;
        white-space: normal;
        word-break: break-word;
    }
}

@media (min-width: 721px) and (max-width: 1024px) {
    .hero h1 { font-size: clamp(3rem, 6vw, 4rem); }
}