/* ── ReCR Human Eval · Mistral-Inspired Dark Purple Theme ────────── */

:root {
    --bg:           #0B0B12;
    --surface:      #111119;
    --card:         #16161F;
    --card-hover:   #1C1C28;
    --border:       #252535;
    --border-light: #2F2F42;
    --primary:      #7C3AED;
    --primary-hover:#6D28D9;
    --primary-soft: rgba(124, 58, 237, 0.12);
    --accent:       #A78BFA;
    --text:         #F3F4F6;
    --text-2:       #C4C7CF;
    --text-3:       #8B8FA3;
    --success:      #10B981;
    --success-soft: rgba(16, 185, 129, 0.12);
    --warning:      #F59E0B;
    --error:        #EF4444;
    --radius:       10px;
    --radius-sm:    6px;
    --radius-lg:    16px;
    --shadow:       0 4px 24px rgba(0,0,0,.35);
    --font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { font-size: 15px; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--primary); }

/* ── Navbar ──────────────────────────────────────────────────────── */
.navbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 2rem; height: 56px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
}
.nav-brand {
    font-weight: 700; font-size: 1.05rem; color: var(--text);
    display: flex; align-items: center; gap: 0.5rem;
}
.brand-icon { color: var(--primary); font-size: 1.2rem; }
.nav-links { display: flex; align-items: center; gap: 1.5rem; font-size: 0.9rem; }
.nav-links a { color: var(--text-2); transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-user { color: var(--accent); font-weight: 500; }
.nav-logout { color: var(--text-3) !important; }

/* ── Container ───────────────────────────────────────────────────── */
.container { max-width: 1280px; margin: 0 auto; padding: 2rem 1.5rem; }

/* ── Flash messages ──────────────────────────────────────────────── */
.flash-container { max-width: 1280px; margin: 1rem auto 0; padding: 0 1.5rem; }
.flash {
    padding: 0.75rem 1rem; border-radius: var(--radius-sm);
    font-size: 0.9rem; margin-bottom: 0.5rem;
}
.flash-error { background: rgba(239,68,68,.12); color: #FCA5A5; border: 1px solid rgba(239,68,68,.2); }
.flash-success { background: var(--success-soft); color: #6EE7B7; border: 1px solid rgba(16,185,129,.2); }

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.6rem 1.4rem; border: none; border-radius: var(--radius-sm);
    font-family: var(--font); font-size: 0.9rem; font-weight: 500;
    cursor: pointer; transition: all .15s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-secondary { background: var(--card); color: var(--text-2); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--card-hover); color: var(--text); }
.btn-full { width: 100%; }
.btn-lg { padding: 0.8rem 2rem; font-size: 1rem; }

/* ── Auth page ───────────────────────────────────────────────────── */
.auth-wrapper {
    display: flex; align-items: center; justify-content: center;
    min-height: calc(100vh - 140px);
}
.auth-card {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 3rem;
    width: 100%; max-width: 440px; box-shadow: var(--shadow);
}
.auth-header { text-align: center; margin-bottom: 2rem; }
.auth-icon { font-size: 2rem; color: var(--primary); display: block; margin-bottom: 0.75rem; }
.auth-header h1 { font-size: 1.4rem; font-weight: 700; }
.auth-subtitle { color: var(--text-3); font-size: 0.9rem; margin-top: 0.3rem; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-2); margin-bottom: 0.4rem; font-weight: 500; }
.form-group input {
    width: 100%; padding: 0.7rem 1rem;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text);
    font-family: var(--font); font-size: 0.95rem;
    outline: none; transition: border-color .15s;
}
.form-group input:focus { border-color: var(--primary); }
.auth-note { color: var(--text-3); font-size: 0.8rem; margin-top: 1.5rem; text-align: center; line-height: 1.5; }

/* ── Guide page ──────────────────────────────────────────────────── */
.guide-page { max-width: 860px; margin: 0 auto; }
.guide-page h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.guide-intro { color: var(--text-2); font-size: 1rem; margin-bottom: 2rem; }
.guide-section { margin-bottom: 2rem; }
.guide-section h2 { font-size: 1.15rem; color: var(--accent); margin-bottom: 0.75rem; }
.guide-section p { color: var(--text-2); margin-bottom: 0.75rem; }
.rating-guide { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.rating-card {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.25rem;
}
.rating-card h3 { font-size: 0.95rem; color: var(--primary); margin-bottom: 0.5rem; }
.rating-card p { font-size: 0.85rem; color: var(--text-3); margin-bottom: 0.5rem; }
.rating-card ul { list-style: none; font-size: 0.82rem; color: var(--text-2); }
.rating-card li { padding: 0.15rem 0; }
.rating-card li strong { color: var(--text); }
.guide-tips { list-style: none; }
.guide-tips li { padding: 0.3rem 0; color: var(--text-2); font-size: 0.95rem; }
.guide-tips li::before { content: "→ "; color: var(--primary); font-weight: 600; }
.guide-cta { text-align: center; margin-top: 2.5rem; }

/* ── Dashboard ───────────────────────────────────────────────────── */
.dashboard-page { max-width: 960px; margin: 0 auto; }
.dashboard-header { margin-bottom: 2rem; }
.dashboard-header h1 { font-size: 1.6rem; }
.dashboard-subtitle { color: var(--text-3); }
.progress-card {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.5rem 2rem;
    margin-bottom: 2rem;
}
.progress-stats { display: flex; gap: 3rem; margin-bottom: 1rem; }
.stat { display: flex; flex-direction: column; }
.stat-value { font-size: 1.6rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 0.8rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.05em; }
.progress-bar-wrapper {
    height: 6px; background: var(--surface); border-radius: 3px; overflow: hidden;
}
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 3px; transition: width .3s; }
.progress-pct { font-size: 0.8rem; color: var(--text-3); margin-top: 0.5rem; }
.dashboard-actions { display: flex; gap: 1rem; margin-bottom: 2rem; flex-wrap: wrap; }
.complete-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.7rem 1.5rem; background: var(--success-soft);
    border-radius: var(--radius-sm); color: #6EE7B7; font-weight: 500;
}
.complete-icon { font-size: 1.2rem; }

.prompt-list h2 { font-size: 1.1rem; margin-bottom: 1rem; }
.prompt-grid { display: flex; flex-direction: column; gap: 0.4rem; }
.prompt-item {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.6rem 1rem; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: 0.85rem; color: var(--text-2); transition: all .15s;
}
.prompt-item:hover { background: var(--card-hover); color: var(--text); border-color: var(--border-light); }
.prompt-item.done { border-left: 3px solid var(--success); }
.prompt-num { color: var(--text-3); font-weight: 600; min-width: 2.5rem; }
.prompt-text { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prompt-check { color: var(--success); font-weight: 700; }

/* ── Evaluate page ───────────────────────────────────────────────── */
.eval-page { max-width: 1400px; margin: 0 auto; }
.eval-progress {
    position: relative; height: 4px; background: var(--surface);
    border-radius: 2px; margin-bottom: 1.5rem; overflow: hidden;
}
.eval-progress-bar { height: 100%; background: var(--primary); border-radius: 2px; transition: width .3s; }
.eval-progress-text {
    position: absolute; right: 0; top: 8px; font-size: 0.75rem; color: var(--text-3);
}
.prompt-card {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}
.prompt-badge {
    display: inline-block; padding: 0.15rem 0.6rem; font-size: 0.7rem;
    background: var(--primary-soft); color: var(--accent);
    border-radius: 4px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.04em; margin-bottom: 0.5rem;
}
.prompt-full-text { font-size: 0.95rem; color: var(--text-2); line-height: 1.55; }

/* Compare grid (pairwise) */
.compare-grid {
    display: grid; gap: 1.5rem;
    grid-template-columns: 1fr 1fr;
    margin-bottom: 1.5rem;
}
.compare-col {
    background: var(--card); border: 2px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
    transition: border-color .2s, box-shadow .2s;
}
.compare-col.winner { border-color: var(--primary); box-shadow: 0 0 16px rgba(124,58,237,.2); }
.compare-header {
    display: flex; align-items: center; justify-content: center;
    padding: 0.6rem 1rem; border-bottom: 1px solid var(--border);
}
.compare-label { font-weight: 700; font-size: 0.95rem; color: var(--accent); }

.video-wrapper { position: relative; background: #000; }
.video-wrapper video { width: 100%; display: block; max-height: 360px; object-fit: contain; }

/* Preference buttons */
.pref-section {
    text-align: center; padding: 1.5rem;
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); margin-bottom: 1.5rem;
}
.pref-section h3 { font-size: 1rem; margin-bottom: 1rem; color: var(--text-2); }
.pref-buttons { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }
.pref-btn {
    padding: 0.7rem 2rem; border: 2px solid var(--border);
    background: var(--surface); color: var(--text-2);
    border-radius: var(--radius-sm); font-family: var(--font);
    font-size: 0.95rem; font-weight: 600; cursor: pointer;
    transition: all .15s; min-width: 160px;
}
.pref-btn:hover { border-color: var(--primary); color: var(--text); background: var(--primary-soft); }
.pref-btn.active { border-color: var(--primary); background: var(--primary); color: #fff; box-shadow: 0 0 12px rgba(124,58,237,.3); }
.pref-tie { min-width: 100px; }

/* Info card */
.info-card {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 1.5rem;
}
.info-card h3 { font-size: 1rem; color: var(--accent); margin-bottom: 0.75rem; }
.info-card p { font-size: 0.88rem; color: var(--text-2); margin-bottom: 0.5rem; }
.info-card ol { font-size: 0.88rem; color: var(--text-2); padding-left: 1.5rem; }
.info-card li { margin-bottom: 0.3rem; }
.task-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1rem 1.25rem; }
.task-card h3 { font-size: 0.95rem; color: var(--primary); margin-bottom: 0.4rem; }
.task-card p { font-size: 0.88rem; color: var(--text-2); }

/* Win matrix cells */
.win-matrix td { text-align: center; font-size: 0.82rem; }
.cell-diag { color: var(--text-3); }
.cell-win { color: var(--success); font-weight: 600; }
.cell-loss { color: var(--error); }

/* Rating buttons */
.rating-group { padding: 0.75rem 1rem; }
.rating-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.25rem 0;
}
.rating-dim { font-size: 0.75rem; color: var(--text-3); font-weight: 500; min-width: 100px; }
.rating-buttons { display: flex; gap: 0.3rem; }
.rate-btn {
    width: 32px; height: 28px; border: 1px solid var(--border);
    background: var(--surface); color: var(--text-3);
    border-radius: 4px; font-size: 0.8rem; font-weight: 600;
    cursor: pointer; transition: all .12s; font-family: var(--font);
}
.rate-btn:hover { border-color: var(--primary); color: var(--text); background: var(--primary-soft); }
.rate-btn.active {
    background: var(--primary); color: #fff;
    border-color: var(--primary); box-shadow: 0 0 8px rgba(124,58,237,.3);
}

/* Eval nav */
.eval-nav {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.5rem 0; border-top: 1px solid var(--border);
}

/* ── Complete page ───────────────────────────────────────────────── */
.complete-page {
    display: flex; align-items: center; justify-content: center;
    min-height: calc(100vh - 200px);
}
.complete-card {
    text-align: center; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 3rem 4rem; max-width: 500px;
}
.complete-icon-lg { font-size: 3rem; color: var(--success); margin-bottom: 1rem; }
.complete-card h1 { font-size: 1.6rem; margin-bottom: 0.75rem; }
.complete-card p { color: var(--text-2); font-size: 0.95rem; margin-bottom: 0.5rem; }
.complete-note { color: var(--text-3); font-size: 0.85rem; }
.complete-actions { margin-top: 2rem; }

/* ── Admin page ──────────────────────────────────────────────────── */
.admin-page { max-width: 1100px; margin: 0 auto; }
.admin-page h1 { font-size: 1.6rem; margin-bottom: 2rem; }
.admin-section { margin-bottom: 2.5rem; }
.admin-section h2 { font-size: 1.1rem; color: var(--accent); margin-bottom: 0.75rem; }
.section-note { font-size: 0.82rem; color: var(--text-3); margin-bottom: 1rem; }
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
thead th {
    text-align: left; padding: 0.6rem 0.8rem;
    border-bottom: 2px solid var(--border); color: var(--text-3);
    font-weight: 600; font-size: 0.78rem; text-transform: uppercase;
    letter-spacing: 0.04em;
}
tbody td { padding: 0.55rem 0.8rem; border-bottom: 1px solid var(--border); }
tbody tr:hover { background: var(--card-hover); }
.mini-progress { height: 4px; width: 100px; background: var(--surface); border-radius: 2px; overflow: hidden; }
.mini-bar { height: 100%; background: var(--primary); border-radius: 2px; }

.best-grid { display: flex; flex-direction: column; gap: 0.6rem; }
.best-item { display: flex; align-items: center; gap: 1rem; }
.best-name { min-width: 180px; font-size: 0.88rem; color: var(--text-2); }
.best-bar-wrapper { flex: 1; height: 20px; background: var(--surface); border-radius: 4px; overflow: hidden; }
.best-bar { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 4px; }
.best-pct { font-size: 0.8rem; color: var(--text-3); min-width: 80px; text-align: right; }

.bt-bar-wrapper { height: 16px; background: var(--surface); border-radius: 4px; overflow: hidden; width: 200px; }
.bt-bar { height: 100%; background: var(--primary); border-radius: 4px; }

.export-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ── Footer ──────────────────────────────────────────────────────── */
.footer {
    text-align: center; padding: 2rem; color: var(--text-3);
    font-size: 0.75rem; border-top: 1px solid var(--border);
    margin-top: 3rem;
}

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .compare-grid { grid-template-columns: 1fr; }
    .pref-buttons { flex-direction: column; align-items: center; }
    .pref-btn { width: 100%; max-width: 300px; }
}
@media (max-width: 768px) {
    .navbar { padding: 0 1rem; }
    .container { padding: 1.5rem 1rem; }
    .progress-stats { gap: 1.5rem; }
    .auth-card { padding: 2rem 1.5rem; margin: 1rem; }
    .eval-nav { flex-wrap: wrap; gap: 0.5rem; }
}