/* anandiyer.com — Collison-style personal page */

:root {
  --bg: #fbfaf7;
  --ink: #1a1a1a;
  --muted: #6b6b66;
  --rule: #e5e3dc;
  --accent: #1f3a8a;
  --serif: "Charter", "Source Serif 4", "Iowan Old Style", "Apple Garamond",
    "Baskerville", "Times New Roman", "Droid Serif", Times, serif,
    "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;
  --reading: 640px;
  --rail: 720px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.6;
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--reading);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 4rem;
}

.wrap--wide { max-width: var(--rail); }

/* ── Header ────────────────────────────────────────────── */
header.site {
  max-width: var(--rail);
  margin: 0 auto;
  padding: 3rem 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.95rem;
}
header.site .name {
  font-weight: 600;
  letter-spacing: -0.01em;
}
header.site nav a {
  margin-left: 1.5rem;
  color: var(--muted);
  text-decoration: none;
}
header.site nav a:hover { color: var(--ink); }

/* ── Hero ──────────────────────────────────────────────── */
.hero {
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}
.hero h1 {
  font-size: 2.6rem;
  line-height: 1.1;
  margin: 0 0 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.hero .lede {
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--ink);
  margin: 0;
}

/* ── Prose ─────────────────────────────────────────────── */
p { margin: 0 0 1.1rem; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: text-decoration-color 0.15s;
}
a:hover { text-decoration-color: var(--accent); }

/* ── Sections ──────────────────────────────────────────── */
section { margin-top: 3rem; }

.label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
  font-weight: 500;
}

h2 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}

/* ── Lists (writing, talks) ────────────────────────────── */
.list { list-style: none; padding: 0; margin: 0; }
.list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
}
.list li:last-child { border-bottom: none; }
.list .title { flex: 1; }
.list .meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

/* ── Tweet rail ────────────────────────────────────────── */
.rail-wrap {
  margin: 0 -1.5rem;            /* break out of reading width edges */
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.rail {
  display: flex;
  gap: 1rem;
  padding: 0.25rem 1.5rem 1.5rem;
}
.tweet {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1.1rem 1.2rem 0.9rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  min-height: 180px;
  transition: border-color 0.15s, transform 0.15s;
}
.tweet:hover {
  border-color: #c9c6bc;
  transform: translateY(-1px);
}
.tweet .text {
  font-size: 0.95rem;
  line-height: 1.5;
  flex: 1;
}
.tweet .foot {
  margin-top: 0.85rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

/* ── FAQ (details/summary) ─────────────────────────────── */
#faq details {
  border-bottom: 1px solid var(--rule);
  padding: 1rem 0;
}
#faq details:first-of-type { border-top: 1px solid var(--rule); }
#faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
#faq summary::-webkit-details-marker { display: none; }
#faq summary::after {
  content: "+";
  font-family: var(--mono);
  font-weight: 400;
  color: var(--muted);
  font-size: 1.2rem;
}
#faq details[open] summary::after { content: "−"; }
#faq details p {
  margin-top: 0.85rem;
  color: var(--ink);
}

/* ── Contact ───────────────────────────────────────────── */
.contact a { font-weight: 600; }

footer.site {
  max-width: var(--rail);
  margin: 3.5rem auto 2.5rem;
  padding: 1.5rem 1.5rem 0;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}
footer.site a { color: var(--muted); }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 600px) {
  body { font-size: 18px; }
  .wrap { padding: 2rem 1.25rem 2.5rem; }
  header.site { padding: 1.5rem 1.25rem 0; }
  .hero { margin-top: 1.5rem; margin-bottom: 1.75rem; }
  .hero h1 { font-size: 2.1rem; }
  .hero .lede { font-size: 1.1rem; }
  section { margin-top: 2.25rem; }
  .rail-wrap { margin: 0 -1.25rem; }
  .rail { padding: 0.25rem 1.25rem 1.5rem; }
  footer.site { flex-direction: column; gap: 0.5rem; padding: 1.5rem 1.25rem 0; }
}