@import url('https://fonts.googleapis.com/css2?family=Fraunces:wght@300;400;600;700&family=Source+Sans+3:wght@300;400;500;600&display=swap');

:root {
  color-scheme: light dark;
  --bg: #f7f4ef;
  --bg-elev: #ffffff;
  --ink: #1b1c1e;
  --muted: #5a5d63;
  --accent: #1c5d88;
  --accent-2: #b35a2e;
  --line: #e3ddd2;
  --shadow: 0 24px 60px rgba(27, 28, 30, 0.08);
  --radius: 18px;
  --content: 980px;
}

[data-theme='dark'] {
  --bg: #0f1114;
  --bg-elev: #161a20;
  --ink: #f3f3f2;
  --muted: #9aa0aa;
  --accent: #7cc8ff;
  --accent-2: #ffb07c;
  --line: #252a33;
  --shadow: 0 28px 60px rgba(0, 0, 0, 0.55);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Source Sans 3', system-ui, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 10%, rgba(28, 93, 136, 0.08), transparent 40%),
    radial-gradient(circle at 90% 20%, rgba(179, 90, 46, 0.12), transparent 45%),
    var(--bg);
  line-height: 1.6;
}

main {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 24px 72px;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--content);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  box-shadow: var(--shadow);
}

.brand-text {
  font-family: 'Fraunces', serif;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.nav-links a[aria-current='page'] {
  color: var(--ink);
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
  padding: 72px 0 32px;
  align-items: center;
}

.hero-photo {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card {
  background: var(--bg-elev);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.hero h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(2.4rem, 3.6vw, 3.4rem);
  margin: 0 0 12px;
}

.hero p {
  margin: 0 0 18px;
  color: var(--muted);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 0.95rem;
  color: var(--muted);
}

.hero-meta a,
.cv-section a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.section-title {
  margin: 48px 0 16px;
  font-family: 'Fraunces', serif;
  font-size: 1.6rem;
}

.card-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--bg-elev);
  border-radius: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.paper {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.paper:last-child {
  border-bottom: none;
}

.paper-title {
  font-weight: 600;
  font-size: 1.05rem;
}

.paper-meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.paper-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.paper-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.cv-section {
  margin: 28px 0;
}

.cv-section h3 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.cv-item {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

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

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 32px 0 48px;
}

@media (max-width: 700px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 48px;
  }
}

.fade-in {
  animation: fadeIn 0.8s ease both;
}

.stagger > * {
  animation: rise 0.7s ease both;
}

.stagger > *:nth-child(2) { animation-delay: 0.1s; }
.stagger > *:nth-child(3) { animation-delay: 0.2s; }
.stagger > *:nth-child(4) { animation-delay: 0.3s; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}