@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --card-soft: #f8fafc;
  --card-accent: #fdfef9;
  --accent: #76b900;
  --accent-dark: #5f9700;
  --accent-soft: rgba(118, 185, 0, 0.12);
  --accent-border: rgba(118, 185, 0, 0.18);
  --text: #111827;
  --muted: #4b5563;
  --border: #e2e8f0;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --hero-bg: #ffffff;
  --figure-mat: #ffffff;
  --nav-bg: rgba(255, 255, 255, 0.85);
  --pill-secondary-border: rgba(17, 24, 39, 0.12);
  --ucsc-pill-bg: transparent;
  --ucsc-pill-border: transparent;
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-surface: rgba(255, 255, 255, 0.55);
  color-scheme: light;
}

html[data-theme='dark'] {
  --bg: #0b0f14;
  --card: #141a21;
  --card-soft: #1a2129;
  --card-accent: #17201a;
  --accent: #8fd014;
  --accent-dark: #a7e02f;
  --accent-soft: rgba(143, 208, 20, 0.14);
  --accent-border: rgba(143, 208, 20, 0.26);
  --text: #e8edf2;
  --muted: #9aa7b4;
  --border: #232c36;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  --hero-bg: #0f151b;
  --figure-mat: #f6f8fa;
  --nav-bg: rgba(20, 26, 33, 0.85);
  --pill-secondary-border: rgba(232, 237, 242, 0.16);
  --ucsc-pill-bg: #ffffff;
  --ucsc-pill-border: #2b3540;
  --glass-bg: rgba(30, 38, 46, 0.45);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-surface: rgba(30, 38, 46, 0.5);
  color-scheme: dark;
}

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

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  transition: background 0.3s ease, color 0.3s ease;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- theme toggle (matches personal site) ---------- */
.theme-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  font-family: 'SF Mono', 'Menlo', 'Monaco', monospace;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text);
  background: var(--card);
  border: 1.5px solid var(--text);
  padding: 0.5rem 1.05rem;
  border-radius: 0;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--text);
  transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.15s, color 0.15s;
}

.theme-toggle:hover {
  background: var(--accent);
  color: var(--bg);
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--text);
}

.theme-toggle:active {
  transform: translate(3px, 3px);
  box-shadow: 0 0 0 var(--text);
}

/* ---------- hero ---------- */
header.hero {
  padding: 70px 24px 40px;
  background: var(--hero-bg);
  color: var(--text);
  position: relative;
  overflow: hidden;
  transition: background 0.3s ease;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 980px;
}

.badge {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.hero-mark {
  height: 54px;
  width: auto;
  margin-bottom: 6px;
}

.hero-title {
  margin: 20px 0 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 12px;
  line-height: 1.2;
}

.hero-title-mark {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  background: linear-gradient(120deg, #597a4c, var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--text);
}

html[data-theme='dark'] .hero-title-mark {
  background: linear-gradient(120deg, #cfe8a3, var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-title-rest {
  font-size: clamp(1.1rem, 2.2vw, 1.7rem);
  font-weight: 300;
  color: var(--muted);
}

.author-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  margin: 18px 0 6px;
  font-size: 1rem;
}

.author-list a,
.author-list span {
  color: var(--text);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px dotted transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.author-list a:hover {
  color: var(--accent-dark);
  border-color: var(--accent);
}

.author-list sup {
  font-size: 0.7em;
  margin-left: 2px;
  color: var(--muted);
}

.author-note {
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: var(--muted);
}

.affiliation-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin: 6px 0 4px;
  padding: 6px 0;
}

.affiliation-logos a {
  display: inline-flex;
  align-items: center;
}

.affiliation-logos img {
  height: 52px;
  width: auto;
  opacity: 0.92;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.affiliation-logos img.ucsc {
  height: 62px;
  background: var(--ucsc-pill-bg);
  border: 1px solid var(--ucsc-pill-border);
  border-radius: 14px;
  padding: 12px 22px;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.3s ease;
}

.affiliation-logos a:hover img {
  opacity: 1;
  transform: translateY(-2px);
}

/* NVIDIA wordmark is black artwork on a green swirl; lift black to white in dark
   mode while leaving the green swirl untouched. */
html[data-theme='dark'] .affiliation-logos img.nvidia {
  filter: brightness(0) saturate(100%) invert(72%) sepia(60%) saturate(540%) hue-rotate(38deg) brightness(1.05) contrast(0.95);
}

.cta-row {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* Apple liquid-glass rectangular pills */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    inset 0 -1px 0 rgba(15, 23, 42, 0.05),
    0 8px 24px rgba(15, 23, 42, 0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

html[data-theme='dark'] .pill {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2),
    0 10px 26px rgba(0, 0, 0, 0.35);
}

.pill.primary {
  background: linear-gradient(160deg, rgba(143, 208, 20, 0.9), rgba(118, 185, 0, 0.85));
  border-color: rgba(143, 208, 20, 0.5);
  color: #0b0f14;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    0 10px 26px rgba(118, 185, 0, 0.30);
}

.pill:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    0 12px 30px rgba(15, 23, 42, 0.16);
}

html[data-theme='dark'] .pill:hover {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 14px 32px rgba(0, 0, 0, 0.45);
}

.pill.primary:hover {
  background: linear-gradient(160deg, rgba(163, 224, 40, 0.95), rgba(143, 208, 20, 0.9));
  color: #0b0f14;
}

/* ---------- headline stats ---------- */
.stat-row {
  max-width: 1200px;
  margin: 36px auto 0;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 20px 22px;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent-dark);
  line-height: 1.2;
}

.stat span {
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 900px) {
  .stat-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- sections ---------- */
main {
  flex: 1;
  padding: 60px 20px 120px;
}

section {
  max-width: 1200px;
  margin: 0 auto 80px;
  background: var(--glass-surface);
  border-radius: 28px;
  padding: 50px;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.14);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  scroll-margin-top: 30px;
}

section.compact {
  padding: 36px;
}

.section-title {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-dark);
  margin-bottom: 14px;
}

section h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  margin: 0 0 18px;
}

section h3 {
  font-size: 1.25rem;
  margin: 0 0 10px;
}

section p {
  color: var(--muted);
  font-size: 1.05rem;
}

section strong {
  color: var(--text);
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
  margin-top: 30px;
  align-items: start;
}

.card {
  background: var(--card-accent);
  border-radius: 20px;
  padding: 22px;
  border: 1px solid var(--accent-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.card h3 {
  margin-top: 0;
  font-size: 1.3rem;
}

.card ul {
  padding-left: 20px;
  margin: 0;
  color: var(--muted);
}

.card p {
  margin: 8px 0 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 30px;
  align-items: start;
}

.grid.grid-2col {
  grid-template-columns: repeat(2, 1fr);
}

.grid .card {
  background: var(--card-soft);
  border-color: var(--border);
}

@media (max-width: 768px) {
  .grid,
  .grid.grid-2col {
    grid-template-columns: 1fr;
  }
}

/* ---------- figures ---------- */
.figure-card {
  background: var(--card-accent);
  border-radius: 20px;
  padding: 22px;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 14px;
  border: 1px solid var(--accent-border);
}

.figure-card img {
  border-radius: 16px;
  background: var(--figure-mat);
  padding: 10px;
  border: 1px solid var(--border);
  cursor: zoom-in;
  transition: transform 0.3s ease;
}

.figure-card img:hover {
  transform: scale(1.01);
}

.figure-card strong {
  font-size: 0.95rem;
}

.figure-card span {
  font-size: 0.9rem;
  color: var(--muted);
}

.figures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 30px;
}

/* ---------- highlights + teaser ---------- */
.highlights-teaser-block {
  max-width: 1200px;
  margin: 40px auto 40px;
  padding: 50px;
  background: var(--card);
  border-radius: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  scroll-margin-top: 30px;
}

.teaser-area {
  margin-bottom: 36px;
}

.teaser-area img {
  width: 100%;
  border-radius: 20px;
  background: var(--figure-mat);
  padding: 14px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  cursor: zoom-in;
}

.teaser-caption {
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 14px;
  line-height: 1.6;
}

/* ---------- tables ---------- */
.table-wrap {
  margin-top: 28px;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card-soft);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  padding: 12px 18px;
  text-align: right;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}

th:first-child,
td:first-child {
  text-align: left;
}

thead th {
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.02em;
}

tbody tr:last-child td {
  border-bottom: none;
}

tr.highlight td {
  background: var(--accent-soft);
  color: var(--text);
  font-weight: 600;
}

/* ---------- code ---------- */
code,
pre {
  font-family: 'JetBrains Mono', 'SF Mono', monospace;
}

code {
  background: var(--accent-soft);
  color: var(--accent-dark);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  font-size: 0.88em;
}

.code-card {
  margin-top: 24px;
  background: var(--card-soft);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px 24px;
  overflow-x: auto;
}

.code-card pre {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.6;
}

.citation-card {
  background: var(--card-accent);
  color: var(--text);
  border-radius: 20px;
  padding: 26px 30px;
  border: 1px solid var(--accent-border);
  font-size: 0.9rem;
  overflow-x: auto;
}

.citation-card pre {
  margin: 0;
  line-height: 1.7;
}

.footnote {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--muted);
}

/* ---------- side nav ---------- */
.side-nav {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-radius: 16px;
  padding: 10px 8px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.side-nav-item {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 8px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.side-nav-item:hover,
.side-nav-item.active {
  color: var(--accent-dark);
  background: var(--accent-soft);
}

@media (max-width: 1400px) {
  .side-nav {
    display: none;
  }
}

/* ---------- footer ---------- */
.footer {
  max-width: 1200px;
  margin: 0 auto 80px;
  padding: 30px;
  text-align: center;
  color: var(--muted);
}

.footer a {
  color: var(--accent-dark);
  text-decoration: none;
  border-bottom: 1px dotted transparent;
  transition: border-color 0.2s ease;
}

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

/* ---------- lightbox ---------- */
dialog#lightbox {
  width: min(1200px, 92vw);
  border: none;
  border-radius: 24px;
  padding: 20px;
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(6, 10, 14, 0.55);
  backdrop-filter: blur(4px);
}

.lightbox-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.lightbox-body img {
  border-radius: 16px;
  background: var(--figure-mat);
  padding: 12px;
}

.lightbox-body p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

.lightbox-close {
  align-self: flex-end;
  background: var(--accent-soft);
  color: var(--text);
  border: none;
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  font-weight: 600;
  font-family: inherit;
}

@media (max-width: 768px) {
  header.hero {
    padding: 70px 18px 40px;
  }

  section,
  .highlights-teaser-block {
    padding: 32px 24px;
    border-radius: 22px;
  }

  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .pill {
    width: 100%;
    justify-content: center;
  }
}