/* =====================================================================
   BenchD — Base Stylesheet
   Dark theme, design system tokens, layout
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;900&family=JetBrains+Mono:wght@400;600&display=swap');

/* ── Design Tokens ─────────────────────────────────────────────────── */
:root {
    --bg: #0a0a0f;
    --bg-card: #111118;
    --bg-card-2: #16161f;
    --border: #1e1e2e;
    --border-bright: #2a2a3e;

    --accent: #6c63ff;
    --accent-glow: rgba(108, 99, 255, 0.3);
    --accent-2: #00d4aa;
    --accent-warn: #f5a623;
    --accent-error: #ff4d6d;

    --text: #e8e8f0;
    --text-muted: #6b6b80;
    --text-dim: #3a3a50;

    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;

    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── Animated background grid ──────────────────────────────────────── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(108, 99, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108, 99, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ── Layout ────────────────────────────────────────────────────────── */
.app {
    position: relative;
    z-index: 1;
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

/* ── Header ────────────────────────────────────────────────────────── */
.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header__logo {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.header__title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.header__subtitle {
    margin-top: 0.75rem;
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 400;
}

/* ── Status bar ────────────────────────────────────────────────────── */
.status-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-family: var(--font-mono);
    margin-bottom: 2.5rem;
    border: 1px solid var(--border);
    background: var(--bg-card);
}

#sab-status {
    color: var(--text-muted);
}

#sab-status.status-ok {
    color: var(--accent-2);
}

#sab-status.status-warn {
    color: var(--accent-warn);
}

#sab-status.status-error {
    color: var(--accent-error);
}

/* ── Score hero ────────────────────────────────────────────────────── */
.score-hero {
    text-align: center;
    margin-bottom: 3rem;
}

.score-hero__label {
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.score-hero__value {
    font-size: clamp(4rem, 12vw, 7rem);
    font-weight: 900;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.04em;
    color: #fff;
    line-height: 1;
    text-shadow: 0 0 60px var(--accent-glow);
    transition: color var(--transition);
}

.score-hero__value.running {
    color: var(--accent);
}

.score-hero__browser {
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.score-hero__clock {
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.05em;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* ── Start button ──────────────────────────────────────────────────── */
.btn-start {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    color: #fff;
    background: linear-gradient(135deg, var(--accent), #9c3dff);
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 0 30px var(--accent-glow);
    margin-top: 1.5rem;
}

.btn-start:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px var(--accent-glow), 0 8px 20px rgba(0, 0, 0, 0.4);
}

.btn-start:active {
    transform: translateY(0);
}

.btn-start:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-export {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.75rem;
    margin-left: 0.75rem;
    padding: 0.7rem 1.4rem;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-sans);
    color: var(--text);
    background: var(--bg-card-2);
    border: 1px solid var(--border-bright);
    border-radius: 100px;
    cursor: pointer;
    transition: border-color var(--transition), color var(--transition), transform var(--transition);
}

.btn-export:hover:not(:disabled) {
    border-color: var(--accent-2);
    color: var(--accent-2);
    transform: translateY(-1px);
}

.btn-export:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* ── Progress bar ──────────────────────────────────────────────────── */
.progress-wrap {
    margin: 1.5rem 0;
    display: none;
}

.progress-wrap.visible {
    display: block;
}

.progress-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-bottom: 0.4rem;
}

.progress-track {
    height: 4px;
    background: var(--border);
    border-radius: 100px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border-radius: 100px;
    transition: width 0.4s ease;
}

/* ── Category cards grid ───────────────────────────────────────────── */
.categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
    border-color: var(--border-bright);
    transform: translateY(-2px);
}

.card__header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.card__icon {
    font-size: 1.2rem;
}

.card__title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.card__metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.metric {
    background: var(--bg-card-2);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.75rem;
}

.metric__label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.2rem;
}

.metric__value {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

.metric__unit {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-left: 0.2rem;
}

.metric__value.pending {
    color: var(--text-dim);
}

.metric__value.active {
    color: var(--accent);
}

.metric__value.done {
    color: var(--accent-2);
}

.metric__value.error {
    color: var(--accent-error);
}

/* ── Methodology ─────────────────────────────────────────────────── */
.methodology {
    max-width: 800px;
    margin: 4rem auto 2rem;
    padding: 2.5rem;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.methodology::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    opacity: 0.5;
}

.methodology__title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    color: #fff;
}

.methodology__text {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.methodology__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.methodology__item {
    padding: 1rem;
    background: var(--bg-card-2);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    border: 1px solid var(--border);
    transition: transform var(--transition);
}

.methodology__item:hover {
    transform: translateY(-2px);
    border-color: var(--border-bright);
}

.methodology__item strong {
    display: block;
    color: var(--accent-2);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.4rem;
}

.methodology__note {
    font-size: 0.8rem;
    color: var(--text-dim);
    font-style: italic;
}

/* ── Footer ────────────────────────────────────────────────────────── */
.footer {
    text-align: center;
    margin-top: 4rem;
    font-size: 0.75rem;
    color: var(--text-dim);
}

.footer a {
    color: var(--text-muted);
    text-decoration: none;
}

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

/* ── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .categories {
        grid-template-columns: 1fr;
    }

    .card__metrics {
        grid-template-columns: 1fr;
    }
}