/* AgentLoom GitHub Pages — Direction A (academic minimal) */

:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #1a1f2e;
  --muted: #5c6370;
  --accent: #0f766e;
  --accent-hover: #0d635d;
  --indigo: #4f46e5;
  --amber: #b45309;
  --border: #e2e5eb;
  --code-bg: #eef1f5;
  --callout-bg: #ecfdf5;
  --callout-border: #0f766e;
  --max-prose: 720px;
  --max-wide: 960px;
}

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

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

body {
  margin: 0;
  font-family: "Source Sans 3", Inter, system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

h1, h2, h3 {
  font-family: "Source Serif 4", Literata, Georgia, serif;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
}

h1 { font-size: 2.1rem; margin: 0 0 0.75rem; }
h2 { font-size: 1.45rem; margin: 2.5rem 0 1rem; padding-top: 0.5rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 0.75rem; }

a { color: var(--accent); text-decoration-thickness: 1px; }
a:hover { color: var(--accent-hover); }

.wrap {
  max-width: var(--max-prose);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.wrap-wide {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-nav .inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
}

.site-nav .brand {
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}

.site-nav a.nav-link {
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
}

.site-nav a.nav-link:hover { color: var(--accent); }

/* Hero */
.hero {
  padding: 2.5rem 0 1.5rem;
}

.hero .tagline {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38ch;
  margin: 0 0 1.25rem;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
}

.badge:hover { border-color: var(--accent); color: var(--accent); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--text);
  color: #fff;
}

.btn-primary:hover { background: #2d3548; color: #fff; }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost {
  background: transparent;
  color: var(--accent);
  padding-left: 0;
}

/* Status callout */
.callout {
  background: var(--callout-bg);
  border-left: 4px solid var(--callout-border);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0 2rem;
  border-radius: 0 6px 6px 0;
  font-size: 0.92rem;
}

.callout p { margin: 0 0 0.5rem; }
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: var(--text); }

.status-line {
  margin: 1.5rem 0 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

/* Prose sections */
section { padding-bottom: 0.5rem; }

.prose p { margin: 0 0 1rem; }

/* Code blocks */
.code-block {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 1rem 0;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
  padding: 1rem 1.1rem;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text);
}

.code-block .copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  font-size: 0.75rem;
  padding: 0.3rem 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  color: var(--muted);
}

.code-block .copy-btn:hover { color: var(--accent); border-color: var(--accent); }

.expected {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1.1rem;
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.expected strong { color: var(--accent); }

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}

th, td {
  text-align: left;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

th { font-weight: 600; color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }

/* Figures */
.figure {
  margin: 1.5rem 0;
  text-align: center;
}

.figure img, .figure svg {
  max-width: 100%;
  height: auto;
}

.figure-caption {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

/* Research list */
.research-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.research-list li {
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}

.research-list li:last-child { border-bottom: none; }

.status-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  margin-left: 0.35rem;
  vertical-align: middle;
}

.status-accepted { background: #dcfce7; color: #166534; }
.status-review { background: #fef3c7; color: #92400e; }
.status-workshop { background: #ede9fe; color: #5b21b6; }

/* Contributors */
.contributor-grid {
  display: grid;
  gap: 1rem;
  margin: 1rem 0;
}

.contributor-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.15rem;
}

.contributor-card h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-family: inherit;
}

.contributor-card .role {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
}

.site-footer p { margin: 0 0 0.35rem; }

@media (max-width: 640px) {
  h1 { font-size: 1.75rem; }
  .site-nav .inner { gap: 0.35rem 0.85rem; }
  .site-nav a.nav-link { font-size: 0.8rem; }
}