/* ==========================================================
   Hannah Bossi — site stylesheet
   Palette carried over from the original site.
   ========================================================== */
:root {
  --ink: #1c1b22;
  --muted: #5d5b66;
  --accent: #6b2fb8;
  --accent-dark: #4a1f80;
  --soft: #f5f5f7;
  --card: #ffffff;
  --line: #e4e4e9;
  --pill: #f1eafb;
  --shadow: 0 10px 30px rgba(20, 32, 37, 0.08);
  --shadow-sm: 0 2px 10px rgba(20, 32, 37, 0.05);
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  color: var(--ink);
  line-height: 1.6;
  background: var(--soft);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
sup, sub { line-height: 0; }
.ov { text-decoration: overline; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Top navigation ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
}
.brand {
  display: flex;
  flex-direction: column;
  color: var(--ink);
  line-height: 1.2;
}
.brand:hover { text-decoration: none; }
.brand-name { font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand-sub { font-size: 12px; color: var(--muted); letter-spacing: 0.02em; }

.tabs {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.tabs a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.tabs a:hover { background: var(--pill); color: var(--accent-dark); text-decoration: none; }
.tabs a[aria-current="page"] { background: var(--accent); color: #fff; }

/* ---------- Page structure ---------- */
main { padding: 36px 0 64px; }

.page-head { margin: 8px 0 26px; }
.page-head h1 {
  margin: 0 0 6px;
  font-size: 34px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.page-head .lead { margin: 0; color: var(--muted); font-size: 17px; max-width: 760px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}
.card + .card, .stack > * + * { margin-top: 20px; }

h2.section-title {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
}
h2.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
h3 { margin: 0 0 4px; font-size: 17px; letter-spacing: -0.005em; }
p { margin: 0 0 10px; }
p:last-child { margin-bottom: 0; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 > .card + .card, .grid-3 > .card + .card, .quick-links > .card + .card { margin-top: 0; }

.muted { color: var(--muted); }
.small { font-size: 13px; color: var(--muted); }

/* ---------- Pills, badges, buttons ---------- */
.pill {
  display: inline-block;
  background: var(--pill);
  color: var(--accent-dark);
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 12.5px;
  margin: 0 6px 6px 0;
}
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--pill);
  color: var(--accent-dark);
  vertical-align: 2px;
  white-space: nowrap;
}
.badge.strong { background: var(--accent); color: #fff; }
.badge.outline { background: transparent; border: 1px solid var(--line); color: var(--muted); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.btn:hover { text-decoration: none; border-color: var(--accent); background: #f8f5fd; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- Home: hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 36px;
  align-items: center;
  padding: 30px;
  box-shadow: var(--shadow);
}
.hero img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
  display: block;
}
.hero h1 { margin: 0; font-size: 40px; letter-spacing: -0.025em; line-height: 1.1; }
.hero .role { margin: 8px 0 4px; font-size: 18px; color: var(--ink); }
.hero .affil { margin: 0 0 16px; color: var(--muted); font-size: 15px; }
.hero .bio { margin: 0 0 20px; max-width: 640px; }

.interest {
  border-top: 3px solid var(--accent);
}
.interest h3 { margin-bottom: 6px; }
.interest p { color: var(--muted); font-size: 14.5px; }

.quick-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.quick {
  display: block;
  color: var(--ink);
  padding: 18px 20px;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.quick:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.quick .num { font-size: 28px; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; line-height: 1.1; }
.quick .label { font-weight: 600; margin-top: 4px; }
.quick .desc { font-size: 13px; color: var(--muted); }

/* ---------- Timeline / entry lists ---------- */
.entries { list-style: none; margin: 0; padding: 0; }
.entry {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.entry:first-child { padding-top: 2px; }
.entry:last-child { border-bottom: 0; padding-bottom: 0; }
.entry .when { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; padding-top: 1px; }
.entry .what strong { font-weight: 600; }
.entry .what .detail { color: var(--muted); font-size: 14.5px; }
.entry ul { margin: 4px 0 0; padding-left: 18px; color: var(--ink); font-size: 15px; }
.entry ul li { margin-bottom: 3px; }

/* ---------- Publications & talks ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filter {
  font: inherit;
  font-size: 14px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}
.filter:hover { border-color: var(--accent); color: var(--accent-dark); }
.filter[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.filter .count { opacity: 0.7; margin-left: 4px; font-size: 12.5px; }
.search {
  font: inherit;
  font-size: 14px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  min-width: 240px;
  color: var(--ink);
}
.search:focus, .filter:focus-visible, .btn:focus-visible, .tabs a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.pub-list { list-style: none; margin: 0; padding: 0; }
.pub {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.pub:last-child { border-bottom: 0; padding-bottom: 0; }
.pub:first-child { padding-top: 0; }
.pub .idx { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; padding-top: 2px; }
.pub .title { font-weight: 600; line-height: 1.4; }
.pub .title a { color: var(--ink); }
.pub .title a:hover { color: var(--accent); }
.pub .meta { font-size: 14px; color: var(--muted); margin-top: 3px; }
.pub .meta .venue { font-style: italic; }
.pub .tags { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 6px; }
.pub .year { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; padding-top: 2px; }
.pub .links { margin-top: 6px; font-size: 13.5px; display: flex; gap: 14px; flex-wrap: wrap; }

.group-title {
  margin: 30px 0 12px;
  font-size: 20px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.group-title:first-child { margin-top: 0; }
.group-title .n { font-size: 13px; color: var(--muted); font-weight: 400; }

.year-head {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin: 26px 0 0;
  padding: 4px 10px;
  background: var(--soft);
  border-radius: 6px;
  display: inline-block;
}
.year-head:first-child { margin-top: 0; }

.stats { display: flex; flex-wrap: wrap; gap: 28px; }
.stat .num { font-size: 26px; font-weight: 700; color: var(--accent); line-height: 1.1; letter-spacing: -0.02em; }
.stat .label { font-size: 13px; color: var(--muted); }

.empty { padding: 20px 0; color: var(--muted); text-align: center; display: none; }

/* ---------- CV page ---------- */
.cv-layout { display: grid; grid-template-columns: 210px 1fr; gap: 28px; align-items: start; }
.toc { position: sticky; top: 88px; padding: 16px 18px; }
.toc h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin: 0 0 8px; }
.toc ol { list-style: none; margin: 0; padding: 0; font-size: 14px; }
.toc li a { display: block; padding: 4px 0; color: var(--muted); }
.toc li a:hover { color: var(--accent); text-decoration: none; }
.cv-section { scroll-margin-top: 88px; }
.cv-contact { font-size: 14.5px; color: var(--muted); line-height: 1.7; }

/* ---------- Notes ---------- */
.note {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: start;
}
.note-icon {
  width: 56px;
  height: 68px;
  border-radius: 8px;
  background: var(--pill);
  border: 1px solid var(--line);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 8px;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
  position: relative;
}
.note-icon::before {
  content: "";
  position: absolute;
  top: 12px; left: 12px; right: 12px;
  height: 22px;
  background: repeating-linear-gradient(var(--accent) 0 2px, transparent 2px 7px);
  opacity: 0.35;
}
.note .meta { font-size: 13.5px; color: var(--muted); margin-bottom: 8px; }
.note .btn-row { margin-top: 12px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 22px 0;
  font-size: 13.5px;
  color: var(--muted);
}
.site-footer .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .quick-links { grid-template-columns: 1fr 1fr; }
  .cv-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
}
@media (max-width: 720px) {
  .site-nav .container { flex-direction: column; align-items: flex-start; gap: 6px; padding-top: 10px; padding-bottom: 8px; min-height: 0; }
  .tabs { overflow-x: auto; max-width: 100%; gap: 2px; }
  .stats { gap: 14px 24px; }
  .tabs a { padding: 6px 9px; font-size: 14px; white-space: nowrap; }
  .tabs li:first-child a { margin-left: -9px; }
  .tabs a[aria-current="page"] { margin-left: 0; }
  main { padding-top: 24px; }
  .page-head h1 { font-size: 28px; }
  .hero { grid-template-columns: 1fr; gap: 20px; padding: 22px; }
  .hero img { max-width: 200px; }
  .hero h1 { font-size: 32px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .card { padding: 18px; }
  .entry { grid-template-columns: 1fr; gap: 2px; }
  .pub { grid-template-columns: 1fr; gap: 2px; }
  .pub .idx { display: none; }
  .pub .year { order: -1; }
  .search { min-width: 0; width: 100%; }
}

@media print {
  .site-nav, .site-footer, .toolbar, .toc { display: none; }
  body { background: #fff; }
  .card { box-shadow: none; border: 0; padding: 0; }
  .cv-layout { grid-template-columns: 1fr; }
}