/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* CLLG brand — terracotta red from the project logo */
  --red:      #8b2520;
  --red-dark: #6b1a16;
  --red-mid:  #a83028;
  --red-pale: #f9eeec;

  /* Neutrals */
  --cream:   #faf7f4;
  --gray-1:  #f3eeea;
  --gray-2:  #e4dcd7;
  --gray-3:  #9a8f8a;
  --text:    #2c2420;
  --text-2:  #5a4e4a;
  --white:   #ffffff;

  /* Platform colors */
  --hf-yellow:      #d4a017;
  --github-dark:    #24292e;
  --gitlab-orange:  #fc6d26;

  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 2px 16px rgba(139,37,32,.07);
  --shadow-md: 0 6px 32px rgba(139,37,32,.13);
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
}

a { color: var(--red); text-decoration: none; }
a:hover { color: var(--red-mid); }

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

/* ── Layout ───────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .65rem 1.5rem;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--red);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--red-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(139,37,32,.3);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,.45);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.1);
  color: var(--white);
  border-color: rgba(255,255,255,.75);
}

/* ── Nav ──────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(107,26,22,.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  color: var(--white);
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.nav-brand:hover { color: rgba(255,255,255,.85); }

.nav-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}
.nav-links a {
  color: rgba(255,255,255,.75);
  font-size: .88rem;
  font-weight: 500;
  letter-spacing: .02em;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--white); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(140deg, var(--red-dark) 0%, var(--red) 55%, var(--red-mid) 100%);
  padding: 6rem 0 5.5rem;
  position: relative;
  overflow: hidden;
}

/* Greek key pattern overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Crect width='40' height='40' fill='none'/%3E%3Cpath d='M0 0h8v8H0zm8 0h8v8H8zm16 0h8v8h-8zm8 0h8v8h-8zM0 8h8v8H0zm24 0h8v8h-8zM0 16h8v8H0zm8 16h8v8H8zm16 0h8v8h-8zm8 0h8v8h-8zM24 16h8v8h-8zm8-8h8v8h-8z' fill='%23ffffff' fill-opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  position: relative;
}

.hero-logo-wrap {
  flex-shrink: 0;
}

.hero-logo {
  width: 140px;
  height: 140px;
  border-radius: 20px;
  box-shadow: 0 8px 40px rgba(0,0,0,.25);
}

.hero-eyebrow {
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 1.2rem;
}
.hero-title em {
  font-style: italic;
  color: rgba(255,255,255,.8);
}

.hero-sub {
  font-size: 1rem;
  color: rgba(255,255,255,.72);
  max-width: 540px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ── Sections ─────────────────────────────────────────────── */
.section { padding: 5rem 0; }
.section-alt { background: var(--gray-1); }

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  font-weight: 700;
  color: var(--red-dark);
  margin-bottom: .5rem;
}

.section-sub {
  color: var(--text-2);
  margin-bottom: 2.5rem;
}

.subsection-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--red-dark);
  margin: 2.5rem 0 1rem;
  letter-spacing: .03em;
  text-transform: uppercase;
  font-size: .8rem;
  letter-spacing: .1em;
}

/* ── Prose ────────────────────────────────────────────────── */
.prose h2 { display: none; }
.prose h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--red-dark);
  margin: 2rem 0 .6rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--gray-2);
}
.prose h3:first-of-type { border-top: none; padding-top: 0; margin-top: .5rem; }
.prose p { margin-bottom: 1rem; color: var(--text-2); }
.prose strong { color: var(--text); }
.prose em { font-style: italic; }
.prose ul, .prose ol { padding-left: 1.4rem; margin-bottom: 1rem; color: var(--text-2); }
.prose li { margin-bottom: .3rem; }
.prose a { color: var(--red); text-decoration: underline; text-underline-offset: 2px; }
.prose a:hover { color: var(--red-dark); }

/* ── Featured cards ───────────────────────────────────────── */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.featured-card {
  background: var(--white);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}
.featured-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.featured-card-header {
  display: flex;
  align-items: center;
  gap: .8rem;
  margin-bottom: 1rem;
}

.resource-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.featured-badge {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .2rem .6rem;
  border-radius: 4px;
}
.featured-badge--gitlab {
  background: rgba(252,109,38,.12);
  color: var(--gitlab-orange);
}
.featured-card-header .resource-icon { color: var(--gitlab-orange); }
.featured-badge--github {
  background: rgba(36,41,46,.1);
  color: var(--github-dark);
}

.featured-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem;
  color: var(--red-dark);
  margin-bottom: .6rem;
}

.featured-card p {
  color: var(--text-2);
  font-size: .9rem;
  margin-bottom: 1.4rem;
  line-height: 1.6;
}

/* ── Resource cards ───────────────────────────────────────── */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.resource-card {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  background: var(--white);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  color: var(--text);
}
.resource-card:hover {
  border-color: var(--red);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--text);
}

.resource-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.resource-card-icon svg { width: 22px; height: 22px; }

.hf-icon     { background: #fff5e0; color: var(--hf-yellow); }
.github-icon { background: #e8eaed; color: var(--github-dark); }
.gitlab-icon { background: #fde8db; color: var(--gitlab-orange); }

.resource-card strong {
  display: block;
  font-size: .9rem;
  color: var(--red-dark);
  margin-bottom: .2rem;
}
.resource-card p {
  font-size: .8rem;
  color: var(--text-2);
  margin: 0;
  line-height: 1.4;
}

.resource-arrow {
  margin-left: auto;
  color: var(--gray-3);
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: color var(--transition);
}
.resource-card:hover .resource-arrow { color: var(--red); }

/* ── Papers ───────────────────────────────────────────────── */
.papers-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}

.paper-card {
  background: var(--white);
  border: 1px solid var(--gray-2);
  border-left: 4px solid var(--red);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.6rem 2rem;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}
.paper-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(2px);
}

.paper-meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .6rem;
  flex-wrap: wrap;
}

.paper-year {
  font-size: .75rem;
  font-weight: 700;
  background: var(--red-pale);
  color: var(--red-dark);
  padding: .15rem .55rem;
  border-radius: 4px;
  letter-spacing: .04em;
}

.paper-venue {
  font-size: .78rem;
  color: var(--text-2);
  font-style: italic;
}

.paper-arxiv {
  font-size: .75rem;
  font-weight: 600;
  color: var(--red);
  font-family: 'Inter', monospace;
  margin-left: auto;
  border: 1px solid rgba(139,37,32,.25);
  padding: .15rem .5rem;
  border-radius: 4px;
  transition: all var(--transition);
}
.paper-arxiv:hover {
  background: var(--red-pale);
  color: var(--red-dark);
}

.paper-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: .4rem;
}
.paper-title a {
  color: var(--red-dark);
  text-decoration: none;
}
.paper-title a:hover { color: var(--red); text-decoration: underline; }

.paper-authors {
  font-size: .82rem;
  color: var(--text-2);
  margin-bottom: .6rem;
  font-style: italic;
}

.paper-abstract {
  font-size: .88rem;
  color: var(--text-2);
  line-height: 1.6;
  margin: 0;
}

/* ── Team ─────────────────────────────────────────────────── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.team-card { text-align: center; }

.team-photo-wrap {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 1rem;
  border: 3px solid var(--gray-2);
  box-shadow: var(--shadow);
  transition: border-color var(--transition);
}
.team-card:hover .team-photo-wrap { border-color: var(--red); }

.team-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-name {
  display: block;
  font-size: 1rem;
  color: var(--red-dark);
}
.team-name a { color: var(--red-dark); }
.team-name a:hover { color: var(--red); }

.team-role {
  display: block;
  font-size: .82rem;
  color: var(--gray-3);
  margin-top: .2rem;
}

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  background: var(--red-dark);
  color: rgba(255,255,255,.7);
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-brand strong { color: var(--white); }
.footer-brand p { font-size: .85rem; margin-top: .5rem; }

.footer-affiliation {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.footer-affil-label {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(255,255,255,.4);
  margin-bottom: .2rem;
}

.footer-affil-link {
  display: flex;
  align-items: center;
  gap: .6rem;
  color: rgba(255,255,255,.8);
  font-size: .88rem;
  font-weight: 500;
  transition: color var(--transition);
}
.footer-affil-link:hover { color: var(--white); }

.footer-almanach-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 6px;
  background: #111;
  flex-shrink: 0;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  text-align: right;
}
.footer-links a {
  color: rgba(255,255,255,.6);
  font-size: .88rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }

.footer-legal {
  font-size: .8rem;
  color: rgba(255,255,255,.4);
}
.footer-legal a { color: rgba(255,255,255,.5); }
.footer-legal a:hover { color: rgba(255,255,255,.8); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 720px) {
  .hero-inner { flex-direction: column; text-align: center; }
  .hero-logo-wrap { order: -1; }
  .hero-cta { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { text-align: left; flex-direction: row; flex-wrap: wrap; gap: 1rem; }
  .footer-almanach-logo { width: 36px; height: 36px; }
  .paper-arxiv { margin-left: 0; }
}

@media (max-width: 560px) {
  .nav-links { gap: 1rem; }
  .hero-logo { width: 100px; height: 100px; }
}