/* ===== The Neural Scribe — GitHub Pages Design System ===== */
/* Using Times New Roman — no external font import needed */

/* ---------- Design Tokens · Brown-Blue-White Classic ---------- */
:root {
  --bg-deep:      #faf6f0;
  --bg-surface:   #f3ece2;
  --bg-card:      #ffffff;
  --bg-card-alt:  #f7f3ed;
  --bg-card-hover:#f0ebe3;
  --border:       #d6c9b6;
  --border-glow:  rgba(101,67,33,.20);

  --text:         #2c1e0e;
  --text-muted:   #6b5740;
  --text-dim:     #9a876e;

  --accent:       #2b5797;
  --accent-light: #3a6fb5;
  --accent-ultra: #5a8ec9;
  --accent-glow:  rgba(43,87,151,.12);

  --brown:        #7a4e2d;
  --brown-light:  #a0714d;
  --brown-dark:   #5c3a1e;

  --green:        #3a7d4e;
  --green-bg:     rgba(58,125,78,.10);
  --amber:        #b8860b;
  --amber-bg:     rgba(184,134,11,.10);
  --rose:         #a62c2c;
  --rose-bg:      rgba(166,44,44,.10);
  --cyan:         #2b5797;
  --cyan-bg:      rgba(43,87,151,.10);

  --radius:       10px;
  --radius-sm:    6px;
  --shadow-card:  0 2px 16px rgba(44,30,14,.08);
  --shadow-glow:  0 0 24px var(--accent-glow);
  --transition:   .3s cubic-bezier(.25,.8,.25,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Times New Roman', Times, Georgia, serif;
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-ultra); }

code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  background: rgba(43,87,151,.08);
  padding: .15em .45em;
  border-radius: 4px;
  font-size: .85em;
  color: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 92vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 4rem 2rem 3rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 15%, rgba(43,87,151,.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 30% 80%, rgba(122,78,45,.06) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 75% 70%, rgba(184,134,11,.04) 0%, transparent 45%);
  pointer-events: none;
  animation: heroShift 12s ease-in-out infinite alternate;
}
@keyframes heroShift {
  0% { opacity: .7; transform: scale(1) translateY(0); }
  100% { opacity: 1; transform: scale(1.04) translateY(-8px); }
}
.hero h1 {
  font-family: 'Times New Roman', Times, Georgia, serif;
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--brown), var(--accent), var(--brown-dark));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: .35rem;
  position: relative;
  letter-spacing: -.02em;
}
.hero .tagline {
  font-size: 1.1rem; font-weight: 300;
  color: var(--text-muted);
  max-width: 620px; margin: .5rem auto 2.2rem;
  line-height: 1.65;
}
.badge-row { display: flex; gap: .7rem; flex-wrap: wrap; justify-content: center; position: relative; }
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: .4rem .9rem;
  border-radius: 999px;
  font-size: .8rem; font-weight: 500;
  color: var(--text-muted);
  transition: border-color var(--transition), box-shadow var(--transition);
  backdrop-filter: blur(8px);
}
.badge:hover { border-color: var(--accent); box-shadow: 0 0 16px var(--accent-glow); }
.badge .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.scroll-cue {
  margin-top: 3rem; color: var(--text-dim); font-size: 1.6rem;
  animation: bounce 2.5s ease-in-out infinite;
  position: relative;
}
@keyframes bounce {
  0%,100% { transform: translateY(0); opacity: .5; }
  50%     { transform: translateY(10px); opacity: 1; }
}

/* ---------- Navigation ---------- */
.nav-bar {
  position: sticky; top: 0; z-index: 200;
  background: rgba(250,246,240,.92);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  padding: .55rem 2rem;
  display: flex; gap: .6rem; justify-content: center; flex-wrap: wrap;
}
.nav-bar a {
  color: var(--text-muted); font-size: .82rem; font-weight: 500;
  padding: .35rem .7rem; border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.nav-bar a:hover, .nav-bar a.active {
  color: var(--accent-light);
  background: var(--accent-glow);
}

/* ---------- Sections ---------- */
.section {
  max-width: 1120px; margin: 0 auto;
  padding: 5rem 2rem;
}
.section-title {
  font-family: 'Times New Roman', Times, Georgia, serif;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 700;
  margin-bottom: .4rem;
  letter-spacing: -.01em;
}
.section-lead {
  color: var(--text-muted); font-size: 1rem;
  margin-bottom: 2.2rem; max-width: 720px;
  line-height: 1.7;
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.card h3 {
  font-size: 1.12rem; font-weight: 600; margin-bottom: .6rem;
  color: var(--text);
}
.card p, .card li { color: var(--text-muted); font-size: .9rem; }
.card ul { padding-left: 1.2rem; }
.card li { margin-bottom: .35rem; }
.card em { color: var(--accent-light); font-style: italic; }

/* ---------- Glass Card Variant ---------- */
.card-glass {
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(43,87,151,.12);
}

/* ---------- Stats Grid ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem; margin-bottom: 2.2rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem; text-align: center;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}
.stat-val {
  font-size: 2.2rem; font-weight: 700;
  background: linear-gradient(135deg, var(--brown), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-label { font-size: .8rem; color: var(--text-muted); margin-top: .25rem; }

/* ---------- Method / Findings Grid ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.2rem; margin-bottom: 2rem;
}

/* ---------- Chart Wrapper ---------- */
.chart-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1rem;
  margin-bottom: 1.5rem;
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.chart-wrap:hover {
  border-color: rgba(43,87,151,.2);
  box-shadow: 0 0 24px rgba(43,87,151,.06);
}
.chart-wrap canvas { width: 100% !important; }
.chart-label {
  font-size: .72rem; color: var(--text-dim); text-align: right;
  margin-top: .4rem;
}

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; margin-bottom: 1.5rem; border-radius: var(--radius); }
table {
  width: 100%; border-collapse: collapse;
  font-size: .85rem;
}
thead th {
  text-align: left; padding: .8rem 1rem;
  background: var(--bg-card-alt);
  color: var(--text-muted); font-weight: 600;
  border-bottom: 2px solid var(--border);
  position: sticky; top: 0;
  white-space: nowrap;
}
td {
  padding: .65rem 1rem;
  border-bottom: 1px solid var(--border);
}
tr { transition: background var(--transition); }
tr:hover td { background: var(--bg-card-hover); }

/* verdict badges */
.sig   { color: var(--green); font-weight: 600; }
.not-sig { color: var(--text-dim); }
.marginal { color: var(--amber); font-weight: 500; }

/* ---------- Pill Tags ---------- */
.pill {
  display: inline-block;
  padding: .2rem .65rem; border-radius: 999px;
  font-size: .72rem; font-weight: 600;
  white-space: nowrap;
}
.pill-green { background: var(--green-bg); color: var(--green); }
.pill-amber { background: var(--amber-bg); color: var(--amber); }
.pill-rose  { background: var(--rose-bg);  color: var(--rose); }
.pill-cyan  { background: var(--cyan-bg);  color: var(--cyan); }

/* ---------- Divider ---------- */
.divider {
  border: none; border-top: 1px solid var(--border);
  margin: 3rem 0;
}

/* ---------- Footer ---------- */
.footer {
  text-align: center; padding: 3.5rem 2rem;
  color: var(--text-dim); font-size: .8rem;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}
.footer a { color: var(--accent-light); }

/* ---------- Scroll-triggered Fade-in ---------- */
.fade-in {
  opacity: 0; transform: translateY(28px);
  transition: opacity .8s ease, transform .8s ease;
}
.fade-in.visible {
  opacity: 1; transform: translateY(0);
}

/* ---------- Page Link / CTA ---------- */
.cta-row { display: flex; gap: 1rem; justify-content: center; margin-top: 2rem; flex-wrap: wrap; }
.cta-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .65rem 1.5rem;
  border-radius: 999px;
  font-size: .88rem; font-weight: 600;
  background: var(--accent);
  color: #fff;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.cta-btn:hover {
  background: var(--accent-light);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-2px);
  color: #fff;
}
.cta-btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent-light);
}
.cta-btn-outline:hover {
  background: var(--accent-glow);
  color: #fff;
}

/* ---------- About Page Specific ---------- */
.pipeline-steps {
  display: grid; gap: 1rem;
  counter-reset: step;
}
.pipeline-step {
  display: grid; grid-template-columns: 3.2rem 1fr;
  gap: 1rem; align-items: start;
}
.pipeline-step::before {
  counter-increment: step;
  content: counter(step);
  width: 3.2rem; height: 3.2rem;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: 12px;
  font-size: 1.1rem; font-weight: 700;
  color: var(--accent-light);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .section { padding: 3rem 1.2rem; }
  .hero { min-height: 70vh; padding: 3rem 1.2rem 2rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .nav-bar { padding: .5rem 1rem; gap: .3rem; }
  .nav-bar a { font-size: .75rem; padding: .3rem .5rem; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .badge-row { flex-direction: column; align-items: center; }
}