/* Forage V2 — Research Showcase */

:root {
  --forest: #2d5016;
  --forest-light: #3a6b1e;
  --forest-pale: #f4f8f1;
  --forest-mist: #e8f0e4;
  --bark: #5c4a32;
  --text: #1a1a1a;
  --text-secondary: #555;
  --text-muted: #888;
  --bg: #fefefe;
  --card-bg: #fff;
  --border: #e0e0e0;
  --max-w: 780px;
  --max-w-wide: 960px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 17px;
}

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

/* ── Hero ────────────────────────────────────── */

.hero {
  text-align: center;
  padding: 5rem 2rem 3rem;
  background: linear-gradient(180deg, var(--forest-pale) 0%, var(--bg) 100%);
}

.hero-logo {
  width: 200px;
  margin-bottom: 1.2rem;
}

.hero h1 {
  font-family: 'Georgia', serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--forest);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.hero .tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 2rem;
  font-style: italic;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.6rem;
  border-radius: 6px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--forest);
  color: #fff;
  border: 2px solid var(--forest);
}

.btn-primary:hover {
  background: var(--forest-light);
  border-color: var(--forest-light);
}

.btn-ghost {
  background: transparent;
  color: var(--forest);
  border: 2px solid var(--forest);
}

.btn-ghost:hover {
  background: var(--forest-pale);
}

/* ── Navigation ──────────────────────────────── */

nav.toc {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(254,254,254,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 2rem;
}

nav.toc ul {
  display: flex;
  gap: 2rem;
  justify-content: center;
  list-style: none;
  max-width: var(--max-w-wide);
  margin: 0 auto;
}

nav.toc a {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

nav.toc a:hover {
  color: var(--forest);
}

/* ── Content sections ────────────────────────── */

.content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type {
  border-bottom: none;
}

h2 {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--forest);
  margin-bottom: 1.2rem;
  letter-spacing: -0.01em;
}

h3 {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 2rem 0 0.8rem;
}

p {
  margin-bottom: 1.2rem;
}

p + p {
  margin-top: 0;
}

strong {
  font-weight: 700;
}

em {
  font-style: italic;
}

a {
  color: var(--forest);
  text-decoration: underline;
  text-decoration-color: rgba(45,80,22,0.3);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}

a:hover {
  text-decoration-color: var(--forest);
}

/* ── Pull quote ──────────────────────────────── */

.pull-quote {
  font-size: 1.3rem;
  font-style: italic;
  color: var(--forest);
  border-left: 4px solid var(--forest);
  padding: 0.8rem 0 0.8rem 1.5rem;
  margin: 2rem 0;
  line-height: 1.6;
}

/* ── Highlight box ───────────────────────────── */

.highlight-box {
  background: var(--forest-pale);
  border: 1px solid var(--forest-mist);
  border-radius: 8px;
  padding: 1.5rem 1.8rem;
  margin: 2rem 0;
}

.highlight-box h3 {
  margin-top: 0;
  color: var(--forest);
}

/* ── Key metrics strip ───────────────────────── */

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}

.metric-card {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--forest-pale);
  border-radius: 8px;
}

.metric-card .number {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--forest);
  line-height: 1.2;
}

.metric-card .label {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── Tables ──────────────────────────────────── */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.88rem;
}

thead th {
  text-align: left;
  font-weight: 600;
  color: var(--text);
  padding: 0.7rem 0.8rem;
  border-bottom: 2px solid var(--text);
}

tbody td {
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

tbody tr:hover {
  background: var(--forest-pale);
}

/* ── Figures ─────────────────────────────────── */

figure {
  margin: 2.5rem 0;
}

figure img {
  width: 100%;
  border-radius: 6px;
  border: 1px solid var(--border);
}

figcaption {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.6rem;
  line-height: 1.5;
}

/* ── Wide figures ────────────────────────────── */

figure.wide {
  max-width: var(--max-w-wide);
  margin-left: 50%;
  transform: translateX(-50%);
  padding: 0 2rem;
}

/* ── Vision images ───────────────────────────── */

.vision-gallery {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin: 2rem 0;
}

.vision-gallery img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.vision-gallery .caption {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}

/* ── Roadmap ─────────────────────────────────── */

.roadmap {
  list-style: none;
  position: relative;
  padding-left: 2rem;
}

.roadmap::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--forest-mist);
}

.roadmap li {
  position: relative;
  padding: 0.8rem 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.95rem;
}

.roadmap li::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 1.15rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--forest-mist);
  border: 2px solid var(--bg);
}

.roadmap li.current::before {
  background: var(--forest);
  box-shadow: 0 0 0 4px rgba(45,80,22,0.15);
}

.roadmap .version {
  font-weight: 700;
  color: var(--forest);
}

.roadmap .desc {
  color: var(--text-secondary);
}

/* ── Footer ──────────────────────────────────── */

footer {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

footer .citation {
  background: var(--forest-pale);
  border-radius: 6px;
  padding: 1.2rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto 1.5rem;
  text-align: left;
  font-family: 'SFMono-Regular', 'Consolas', monospace;
  font-size: 0.78rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  line-height: 1.6;
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero { padding: 3rem 1.5rem 2rem; }
  .hero h1 { font-size: 1.7rem; }
  .metrics-strip { grid-template-columns: repeat(2, 1fr); }
  nav.toc ul { gap: 1rem; flex-wrap: wrap; justify-content: center; }
  nav.toc a { font-size: 0.75rem; }
  figure.wide { padding: 0 1rem; }
}