/* ─────────────────────────────────────────────
   Travis Beckwith, Ph.D. — Personal Site
   Shared stylesheet for index, about, contact
───────────────────────────────────────────── */

:root {
  --ink: #1a1a2e;
  --ink-light: #3d3d5c;
  --paper: #f5f2eb;
  --paper-warm: #ede9e0;
  --accent: #b85c38;
  --accent-muted: #d4896b;
  --rule: #c9c3b5;
  --sidebar-bg: #1a1a2e;
  --sidebar-text: #e8e4db;
  --sidebar-muted: #9b96a0;
  --sidebar-accent: #d4896b;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Source Serif 4', Georgia, serif;
  background: var(--paper);
  color: var(--ink);
  display: flex;
  min-height: 100vh;
  font-size: 16px;
}

/* ── SIDEBAR ── */
.sidebar {
  width: 280px;
  min-width: 280px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 48px 32px 40px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.sidebar-name {
  font-family: 'Playfair Display', serif;
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
  text-decoration: none;
}

.sidebar-name:hover { color: var(--sidebar-accent); }

.sidebar-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sidebar-accent);
  margin-bottom: 28px;
}

.sidebar-contact {
  font-size: 0.78rem;
  line-height: 2;
  color: var(--sidebar-muted);
  margin-bottom: 36px;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
}

.sidebar-contact a {
  color: var(--sidebar-accent);
  text-decoration: none;
  transition: color 0.2s;
}
.sidebar-contact a:hover { color: #fff; }

.sidebar-contact .contact-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 2px;
}

.contact-icon {
  font-size: 0.7rem;
  margin-top: 3px;
  opacity: 0.6;
  flex-shrink: 0;
}

/* ── NAV ── */
.sidebar-nav { flex: 1; }

.nav-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 12px;
}

.sidebar-nav a {
  display: block;
  font-size: 0.82rem;
  color: var(--sidebar-muted);
  text-decoration: none;
  padding: 6px 0;
  border-left: 2px solid transparent;
  padding-left: 12px;
  margin-left: -12px;
  transition: all 0.2s;
  letter-spacing: 0.01em;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: #fff;
  border-left-color: var(--sidebar-accent);
}

/* Top-level page nav (About / Contact) */
.sidebar-pages {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.1);
}

.sidebar-pages a {
  flex: 1;
  text-align: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
  text-decoration: none;
  padding: 8px 4px;
  transition: all 0.2s;
}

.sidebar-pages a:hover,
.sidebar-pages a.active {
  background: rgba(255,255,255,0.07);
  color: #fff;
}

/* ── METRICS ── */
.sidebar-metrics {
  margin-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  gap: 20px;
}

.metric { text-align: center; }

.metric-val {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--sidebar-accent);
  display: block;
  line-height: 1;
}

.metric-lbl {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
  margin-top: 4px;
  display: block;
}

/* ── MAIN ── */
.main {
  flex: 1;
  padding: 60px 72px 80px;
  max-width: 900px;
}

/* ── HERO ── */
.hero {
  margin-bottom: 64px;
  padding-bottom: 48px;
  border-bottom: 2px solid var(--ink);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--accent);
}

.hero-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: 3.8rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 24px;
}

.hero-summary {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--ink-light);
  max-width: 680px;
  font-weight: 300;
  font-style: italic;
}

/* ── SECTIONS ── */
section {
  margin-bottom: 64px;
  scroll-margin-top: 40px;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 32px;
}

.section-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.section-rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
  margin-left: 4px;
}

/* ── PROSE ── */
.prose {
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--ink-light);
}

.prose p { margin-bottom: 1.2em; }
.prose p:last-child { margin-bottom: 0; }

/* ── INTERESTS ── */
.interests-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.interest-card {
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  padding: 20px;
  border-top: 3px solid var(--accent);
}

.interest-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.3;
  color: var(--ink);
}

.interest-card p {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ink-light);
}

/* ── EXPERIENCE ── */
.exp-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule);
}

.exp-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.exp-meta { padding-top: 3px; }

.exp-dates {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.03em;
  line-height: 1.5;
  display: block;
  margin-bottom: 6px;
}

.exp-org {
  font-size: 0.75rem;
  color: var(--ink-light);
  line-height: 1.4;
  font-style: italic;
}

.exp-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  line-height: 1.3;
}

.exp-highlights {
  list-style: none;
  padding: 0;
}

.exp-highlights li {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--ink-light);
  padding-left: 16px;
  position: relative;
  margin-bottom: 6px;
}

.exp-highlights li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent-muted);
  font-size: 0.75rem;
}

/* ── EDUCATION ── */
.edu-item {
  margin-bottom: 28px;
  padding-left: 20px;
  border-left: 3px solid var(--rule);
}

.edu-item.featured { border-left-color: var(--accent); }

.edu-degree {
  font-family: 'Playfair Display', serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.edu-inst {
  font-size: 0.85rem;
  color: var(--ink-light);
  margin-bottom: 4px;
}

.edu-dates {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent-muted);
  letter-spacing: 0.05em;
}

.edu-note {
  font-size: 0.82rem;
  color: var(--ink-light);
  margin-top: 6px;
  font-style: italic;
}

/* ── SKILLS ── */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--rule);
}

.skill-group {
  padding: 20px 24px;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}

.skill-group:nth-child(even) { border-right: none; }
.skill-group:nth-last-child(-n+2) { border-bottom: none; }

.skill-group-name {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.skill-group p {
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--ink-light);
}

/* ── PUBLICATIONS ── */
.pub-item {
  margin-bottom: 20px;
  padding: 18px 20px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--rule);
  transition: border-left-color 0.2s;
}

.pub-item:hover { border-left-color: var(--accent); }

.pub-authors {
  font-size: 0.78rem;
  color: var(--ink-light);
  margin-bottom: 6px;
  line-height: 1.5;
}

.pub-authors strong {
  color: var(--ink);
  font-weight: 600;
}

.pub-title {
  font-family: 'Playfair Display', serif;
  font-size: 0.95rem;
  font-weight: 400;
  font-style: italic;
  color: var(--ink);
  margin-bottom: 6px;
  line-height: 1.4;
}

.pub-venue {
  font-size: 0.75rem;
  color: var(--accent-muted);
  font-family: 'IBM Plex Mono', monospace;
}

.pub-venue a {
  color: var(--accent);
  text-decoration: none;
}

.pub-venue a:hover { text-decoration: underline; }

/* ── SIMPLE LIST ── */
.simple-list {
  list-style: none;
  padding: 0;
}

.simple-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink-light);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

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

.list-year {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent-muted);
  flex-shrink: 0;
  padding-top: 2px;
}

/* ── TAGS ── */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  color: var(--ink-light);
}

/* ── SUBHEADING ── */
.sub-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
}

/* ── CONTACT FORM ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full { grid-column: 1 / -1; }

label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

input, textarea, select {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 0.88rem;
  color: var(--ink);
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

input:focus, textarea:focus {
  border-color: var(--accent);
}

textarea { resize: vertical; min-height: 140px; }

.btn {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #fff;
  background: var(--ink);
  border: none;
  padding: 12px 28px;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
}

.btn:hover { background: var(--accent); }

/* ── LINK CARDS ── */
.link-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.2s, background 0.2s;
}

.link-card:hover {
  border-color: var(--accent);
  background: #fff;
}

.link-card-icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
}

.link-card-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}

.link-card-text {
  font-size: 0.85rem;
  color: var(--ink-light);
}

/* ── FOOTER ── */
footer {
  margin-top: 80px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--accent-muted);
  letter-spacing: 0.08em;
  display: flex;
  justify-content: space-between;
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero, section { animation: fadeUp 0.6s ease both; }
section:nth-child(2) { animation-delay: 0.05s; }
section:nth-child(3) { animation-delay: 0.10s; }
section:nth-child(4) { animation-delay: 0.15s; }
section:nth-child(5) { animation-delay: 0.20s; }

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  body { flex-direction: column; }

  .sidebar {
    width: 100%;
    min-width: unset;
    height: auto;
    position: static;
    padding: 32px 24px;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 24px;
  }

  .sidebar-nav { display: none; }
  .main { padding: 40px 24px; }
  .hero h1 { font-size: 2.6rem; }
  .interests-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .exp-item { grid-template-columns: 1fr; gap: 8px; }
  .contact-grid { grid-template-columns: 1fr; }
  .link-cards { grid-template-columns: 1fr; }
}