/* OpenCast shared styles */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@300..600&display=swap');
@import url('https://api.fontshare.com/v2/css?f[]=satoshi@700,600,500,400&display=swap');

:root {
  /* Surfaces — warm-neutral dark */
  --bg:              #0e0e0f;
  --surface:         #141415;
  --surface-2:       #1a1a1b;
  --surface-raised:  #1f1f21;
  --border:          rgba(255, 255, 255, 0.07);
  --border-strong:   rgba(255, 255, 255, 0.12);

  /* Text */
  --text-primary:    #ededee;
  --text-secondary:  #8b8b8f;
  --text-faint:      #55555a;

  /* Accent — one, restrained */
  --accent:          #4a9eff;
  --accent-dim:      rgba(74, 158, 255, 0.12);
  --accent-teal:     #4DA3A6;
  --accent-teal-dim: rgba(77, 163, 166, 0.12);

  /* Fonts */
  --font-body:       'Inter', system-ui, sans-serif;
  --font-brand:      'Satoshi', 'Inter', sans-serif;
  --font-display:    'Instrument Serif', Georgia, serif;

  /* Radius */
  --radius-sm:       4px;
  --radius-md:       6px;
  --radius-lg:       10px;

  /* Transitions */
  --ease:            cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

body {
  background: var(--bg) !important;
  color: var(--text-primary) !important;
  font-family: var(--font-body) !important;
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-body);
  color: var(--text-primary);
  margin-top: 0;
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

h2 { font-size: 16px; font-weight: 600; }
h3 { font-size: 14px; font-weight: 500; }

/* Layout */
.page-content {
  max-width: 1080px;
  margin-inline: auto;
  padding: 2rem 1.5rem;
}

/* Navigation */
#main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0 1.5rem;
  height: 48px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

#main-nav .brand {
  font-family: var(--font-brand);
  font-style: normal;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-right: 0;
}

#main-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 450;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: color 150ms var(--ease), background 150ms var(--ease);
}

#main-nav a:hover  { color: var(--text-primary); background: rgba(255, 255, 255, 0.05); }
#main-nav a.active { color: var(--text-primary); background: rgba(255, 255, 255, 0.08); }

/* Sections */
.panel { margin-bottom: 3rem; }

/* Headlines / insight widgets */
/* Headlines / insight widgets */
.headlines {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.insight-widget {
  background: var(--surface-raised);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.insight-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.5rem;
}

.insight-text {
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.55;
  max-width: 65ch;
  margin: 0;
}

/* Narrative box */
.narrative {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.125rem;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Engine eval box */
.engine-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.125rem;
  margin-top: 1.5rem;
  font-size: 13px;
}

.engine-box h3 {
  margin: 0 0 0.625rem;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-faint);
}

.engine-box p { margin: 0.25rem 0; color: var(--text-secondary); }
.engine-box strong { color: var(--text-primary); font-weight: 500; }

/* Data tables */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }

.data-table thead th {
  padding: 0.5rem 0.75rem;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  border-bottom: 1px solid var(--border-strong);
}

.data-table tbody td {
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.data-table tbody tr { cursor: pointer; transition: background 120ms var(--ease); }

.data-table tbody tr:hover       { background: rgba(255, 255, 255, 0.03); }
.data-table tbody tr:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

/* ── Nav brand lockup ────────────────────────────────────────────────────── */
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  text-decoration: none !important;
  margin-right: 1.5rem;
  flex-shrink: 0;
}

.brand-lockup svg {
  width: 22px;
  height: 22px;
  color: var(--text-primary);
  flex-shrink: 0;
}

/* ── Hero section ────────────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 4rem;
  align-items: center;
  min-height: calc(100dvh - 48px); /* 48px = nav height */
  padding: clamp(2rem, 5vw, 4rem) max(1.5rem, calc((100vw - 1080px) / 2 + 1.5rem));
  border-bottom: 1px solid var(--border);
}

.hero-copy { max-width: 480px; }

.hero-eyebrow {
  font-family: var(--font-brand);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-teal);
  margin: 0 0 1rem;
}

.hero h1 {
  font-family: var(--font-brand);
  font-size: clamp(1.75rem, 3.5vw, 2.625rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin: 0 0 1.25rem;
  max-width: 18ch;
}

.hero-body {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 38ch;
  margin: 0 0 1.5rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.stat-pill {
  padding: 0.25rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  font-family: var(--font-brand);
  letter-spacing: -0.01em;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: var(--accent-teal);
  color: #0B0D10;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-brand);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 150ms var(--ease);
}

.btn-primary:hover { opacity: 0.85; }

.btn-ghost {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  font-family: var(--font-brand);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.25);
}

/* ── Hero visual: proof panel ────────────────────────────────────────────── */
.hero-visual { align-self: stretch; display: flex; align-items: center; }

.proof-panel {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

.proof-card {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

@media (prefers-reduced-motion: no-preference) {
  .proof-card { transition: transform 200ms var(--ease); }
  .proof-card:hover { transform: translateY(-2px); }
}

.proof-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.proof-eco-badge {
  font-family: var(--font-brand);
  font-size: 10px;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  background: rgba(77, 163, 166, 0.15);
  color: var(--accent-teal);
  border-radius: 3px;
  letter-spacing: 0.06em;
}

.proof-card-label {
  font-size: 10px;
  color: var(--text-faint);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex: 1;
}

.proof-win-rate {
  font-family: var(--font-brand);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.proof-card--sm { padding: 0.75rem 1.25rem; }

.proof-delta-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.proof-delta-row strong {
  font-family: var(--font-brand);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.proof-delta-pos { color: #7BE495; font-size: 12px; }
.proof-delta-neg { color: #F28DA6; font-size: 12px; }

.proof-family-bars {
  display: flex;
  gap: 0.4rem;
  align-items: flex-end;
  margin-top: 0.5rem;
  height: 36px;
}

.proof-family-bar-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  flex: 1;
}

.proof-family-bar {
  width: 100%;
  border-radius: 3px 3px 0 0;
  min-height: 4px;
}

.proof-family-bar-label {
  font-size: 9px;
  font-weight: 600;
  color: var(--text-faint);
  font-family: var(--font-brand);
  letter-spacing: 0.02em;
}

/* ── Alternating split sections ──────────────────────────────────────────── */
.section-split {
  display: grid;
  grid-template-columns: 1fr 1.65fr;
  gap: 2.5rem;
  align-items: start;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.section-split--reverse { grid-template-columns: 1.65fr 1fr; }
.section-split--reverse .split-text { grid-column: 2; grid-row: 1; }
.section-split--reverse .split-chart { grid-column: 1; grid-row: 1; }

.split-text { padding-top: 0.5rem; }

.split-text h2 {
  font-family: var(--font-brand);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0 0 0.75rem;
  color: var(--text-primary);
}

.split-insight {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 38ch;
  margin: 0;
}

.browse-link {
  text-align: right;
  color: var(--text-faint);
  font-size: 12px;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.browse-link a { color: var(--accent-teal); text-decoration: none; }
.browse-link a:hover { text-decoration: underline; }

/* ── Mobile ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { order: 2; }
  .hero h1 { max-width: 100%; }
  .section-split, .section-split--reverse { grid-template-columns: 1fr; }
  .section-split--reverse .split-text,
  .section-split--reverse .split-chart { grid-column: auto; grid-row: auto; }
  .section-split--reverse .split-chart { order: -1; }
}