/* PhatPharm palette v1.0: navy, gold, bone; dark background #0D1117. */
:root {
  --navy: #121A26;
  --gold: #C5A059;
  --bone: #F4F1EA;

  --bg: var(--bone);
  --bg-alt: #ebe6db;
  --surface: #ffffff;
  --text: var(--navy);
  --text-soft: #4A5568;
  --line: #ddd5c6;
  --accent: var(--gold);
  --accent-text: #8a6a2c;
  --band: var(--navy);
  --band-text: var(--bone);

  --serif: Charter, "Bitstream Charter", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[data-theme="dark"] {
  --bg: #0D1117;
  --bg-alt: #121A26;
  --surface: #1A2332;
  --text: var(--bone);
  --text-soft: #8899AA;
  --line: #243044;
  --accent-text: var(--gold);
  --band: #1A2332;
  --band-text: var(--bone);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
}

a { color: inherit; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 1.5rem; }
.narrow { max-width: 700px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.15; margin: 0 0 1rem; }
h1 { font-size: clamp(2.2rem, 4.6vw, 3.5rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.3rem; }

section { padding: 5.5rem 0; }

.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin: 0 0 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 2rem; height: 4rem; }
.wordmark { font-family: var(--serif); font-weight: 700; font-size: 1.25rem; text-decoration: none; }
.site-header nav { display: flex; gap: 1.6rem; margin-left: auto; }
.site-header nav a { text-decoration: none; font-size: 0.95rem; color: var(--text-soft); }
.site-header nav a:hover { color: var(--accent-text); }

.theme-toggle {
  width: 2.75rem;
  height: 1.5rem;
  border-radius: 999px;
  border: 1.5px solid var(--text);
  background: transparent;
  padding: 0;
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 1.05rem;
  height: 1.05rem;
  border-radius: 50%;
  background: var(--text);
  transition: transform 0.25s;
}
[data-theme="dark"] .theme-toggle-knob { transform: translateX(1.2rem); background: var(--gold); }

/* Hero */
.hero { padding-top: 4.5rem; }
.hero-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 4rem; align-items: center; }
.lead { font-size: 1.2rem; color: var(--text-soft); max-width: 34rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2rem; }
.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn.primary { background: var(--gold); color: var(--navy); }
.btn.primary:hover { background: var(--text); color: var(--bg); }
.btn.ghost { border: 1.5px solid var(--text); }
.btn.ghost:hover { border-color: var(--gold); color: var(--accent-text); }

.portrait { margin: 0; }
.portrait img, .portrait-placeholder { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; display: block; border-radius: 4px; }
.portrait-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  border: 1px dashed var(--text-soft);
  color: var(--text-soft);
  font-family: var(--serif);
  font-style: italic;
}

/* Who I am, honest part */
.me { border-top: 1px solid var(--line); }
.honest { background: var(--bg-alt); }
.draft-note {
  border: 1px dashed var(--accent-text);
  padding: 1.25rem 1.5rem;
  border-radius: 4px;
  color: var(--text-soft);
}
.draft-note p { margin: 0; }

.honest-turn { font-family: var(--serif); font-size: 1.3rem; font-weight: 700; margin-top: 2.5rem; }

/* Story page */
.story-hero { padding-bottom: 2rem; }
.story-body { padding-bottom: 5rem; }
.story-body h2 { font-size: clamp(1.4rem, 2.6vw, 1.8rem); margin: 3.5rem 0 1rem; }
.story-body h2:first-child { margin-top: 1rem; }
.story-body p { margin: 0 0 1.2rem; }
.site-header nav a[aria-current="page"] { color: var(--accent-text); }

/* Horizontal timeline */
.timeline-head { display: flex; justify-content: space-between; align-items: flex-end; }
.timeline-controls { display: flex; gap: 0.6rem; margin-bottom: 1rem; }
.tl-btn {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1.5px solid var(--text);
  background: transparent;
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
}
.tl-btn:hover { background: var(--gold); border-color: var(--gold); color: var(--navy); }

.timeline-track {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  margin-top: 2rem;
  padding: 0 max(1.5rem, calc((100vw - 1120px) / 2 + 1.5rem));
  scroll-padding-left: max(1.5rem, calc((100vw - 1120px) / 2 + 1.5rem));
}
.timeline-track::-webkit-scrollbar { display: none; }
.timeline-track ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0;
  position: relative;
  width: max-content;
}
.timeline-track ol::before {
  content: "";
  position: absolute;
  top: 2.15rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
}
.timeline-track li {
  scroll-snap-align: start;
  width: 17rem;
  padding-right: 2rem;
  position: relative;
}
.timeline-track li::before {
  content: "";
  position: absolute;
  top: 1.8rem;
  left: 0;
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--text-soft);
}
.timeline-track li.key::before { background: var(--gold); border-color: var(--gold); }
.year { font-family: var(--serif); font-weight: 700; font-size: 1.5rem; display: block; margin-bottom: 1.6rem; line-height: 1; }
.timeline-track li p { margin: 0; color: var(--text-soft); font-size: 1rem; }
/* Photos alternate above and below the line, in a band reserved above it. */
.timeline-track ol { padding-top: 8.5rem; }
.timeline-track ol::before { top: calc(8.5rem + 2.15rem); }
.tl-photo { display: block; width: 10rem; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 4px; filter: saturate(0.9); }
.tl-photo.above { position: absolute; top: -8.5rem; left: 0; }
.tl-photo.below { margin-top: 0.9rem; }

/* Blueprint pyramid */
.blueprint { background: var(--band); color: var(--band-text); }
.blueprint .eyebrow { color: var(--gold); }
.blueprint-lead { max-width: 46rem; opacity: 0.9; font-size: 1.15rem; }
.at-work a { color: var(--gold); }
.blueprint-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 4rem; align-items: center; margin-top: 2.5rem; }
.pyramid { width: 100%; max-width: 440px; }
.pyramid .tier { stroke: var(--gold); stroke-width: 1.5; transition: fill 0.2s; }
.pyramid .t1 { fill: rgba(197, 160, 89, 0.10); }
.pyramid .t2 { fill: rgba(197, 160, 89, 0.22); }
.pyramid .t3 { fill: rgba(197, 160, 89, 0.38); }
.pyramid .t4 { fill: rgba(197, 160, 89, 0.70); }
.pyramid a:hover .tier { fill: var(--gold); }
.pyramid text {
  fill: var(--bone);
  font-family: var(--serif);
  font-weight: 700;
  font-size: 17px;
  text-anchor: middle;
  pointer-events: none;
}
.pyramid .t4 + text { font-size: 14px; fill: var(--navy); }
.layers article { padding: 1.1rem 0; border-bottom: 1px solid rgba(244, 241, 234, 0.15); }
.layers article:last-child { border-bottom: 0; }
.layers h3 { color: var(--gold); margin-bottom: 0.4rem; }
.layers p { margin: 0 0 0.5rem; opacity: 0.92; }
.at-work { font-size: 0.9rem; opacity: 0.7 !important; }

/* Books */
.books { background: var(--bg-alt); }
.book-list { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 2rem; }
.book h3 { font-weight: 400; font-size: 1.5rem; }
.book p { color: var(--text-soft); }
.text-link { font-weight: 600; color: var(--accent-text); text-decoration: none; border-bottom: 1px solid currentColor; }
.text-link::after { content: " \2192"; }

/* Letters */
.subscribe { width: 100%; height: 320px; border: 1px solid var(--line); background: #fff; margin-top: 1.5rem; border-radius: 4px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 3rem 0 2rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; flex-wrap: wrap; }
.credential { color: var(--text-soft); font-size: 0.95rem; margin: 0.6rem 0 0; }
.site-footer nav { display: flex; gap: 1.5rem; }
.site-footer nav a { text-decoration: none; color: var(--accent-text); font-weight: 600; }
.fine-print { margin-top: 2rem; font-size: 0.85rem; color: var(--text-soft); }

@media (max-width: 820px) {
  section { padding: 4rem 0; }
  .hero-grid, .blueprint-grid, .book-list { grid-template-columns: 1fr; gap: 2.5rem; }
  .portrait { max-width: 360px; }
  .site-header nav { gap: 1rem; }
  .site-header nav a { font-size: 0.88rem; }
  .timeline-track li { width: 15rem; }
}

@media (max-width: 600px) {
  .site-header nav { display: none; }
  .header-inner { justify-content: space-between; }
}