/* ==========================================================================
   Vincent Pacelli — Personal Site
   Color: Crimson | Typography: IBM Plex family
   ========================================================================== */

:root {
  --crimson: #DC143C;
  /* --crimson-dark: #A0102C; */
  --crimson-dark: #B8112F;
  --crimson-light: #F5E6EA;
  --bg: #FAFAF8;
  --text: #1A1A1A;
  --text-muted: #5A5A5A;
  --card-bg: #FFFFFF;
  --border: #E8E0E2;
  /* --font-serif: 'IBM Plex Serif', Georgia, serif;
  --font-sans: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace; */
  --font-serif: 'Wittgenstein', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

/* ---------- Reset & Base ---------- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--crimson);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

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

/* ---------- Layout ---------- */

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  flex: 1;
}

/* ---------- Navigation ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.nav-inner {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.nav-name:hover {
  opacity: 1;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.nav-link:hover {
  opacity: 1;
  color: var(--text);
}

.nav-link.active {
  font-weight: 600;
  color: var(--crimson);
  border-bottom-color: var(--crimson);
}

/* ---------- Home: Hero / Bio ---------- */

.hero {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 56px;
}

.hero-photo img {
  width: 200px;
  height: 240px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.photo-placeholder {
  width: 200px;
  height: 240px;
  border-radius: 6px;
  background: linear-gradient(145deg, var(--crimson-light), #EDE4E7);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--crimson);
  opacity: 0.4;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  color: var(--crimson-dark);
  font-weight: 500;
  margin-bottom: 16px;
}

.hero-bio {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.7;
}

.hero-bio p {
  margin-bottom: 14px;
}

.hero-bio p:last-child {
  margin-bottom: 0;
}

.hero-bio a {
  color: var(--crimson);
}

.hero-contact {
  margin-top: 20px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.hero-contact a {
  color: var(--crimson);
}

.hero-bio a {
  color: var(--crimson);
  text-decoration: underline;
  text-decoration-color: rgba(220, 20, 60, 0.35);
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  transition: text-decoration-color 0.2s ease;
}

.hero-bio a:hover {
  text-decoration-color: var(--crimson);
}

.highlight {
  color: var(--crimson-dark);
  /* background: rgba(220, 20, 60, 0.07); */
  padding: 0px 3px;
  border-radius: 2px;
  font-weight: 500;
}

/* ---------- Home: Research Cards ---------- */

.section-heading {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--crimson);
  display: inline-block;
}

.research-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.research-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px 24px;
  border-left: 3px solid var(--crimson);
  transition: box-shadow 0.2s ease;
}

.research-card:hover {
  box-shadow: 0 2px 12px rgba(220, 20, 60, 0.08);
}

.research-card-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.research-card-desc {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 10px;
}

.tag-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--crimson-light);
  color: var(--crimson-dark);
  letter-spacing: 0.02em;
}

/* ---------- Publications Page ---------- */

.page-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.page-subtitle {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.page-subtitle .pub-me {
  font-weight: 700;
  color: var(--crimson-dark);
}

.pub-year-group {
  margin-bottom: 32px;
}

.pub-year-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.pub-year {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--crimson);
  flex-shrink: 0;
}

.pub-year-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pub-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 20px;
  transition: box-shadow 0.2s ease;
}

.pub-card:hover {
  box-shadow: 0 2px 12px rgba(220, 20, 60, 0.06);
}

.pub-title {
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 4px;
}

.pub-authors {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 4px;
}

.pub-me {
  font-weight: 700;
  color: var(--crimson-dark);
}

.pub-venue {
  font-family: var(--font-sans);
  font-size: 0.84rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 8px;
}

.pub-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pub-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 1px 8px;
  border-radius: 3px;
  background: var(--crimson-light);
  color: var(--crimson-dark);
  font-weight: 600;
  margin-right: 4px;
}

.pub-badge--oral {
  background: var(--crimson);
  color: #fff;
}

.pub-badge--review {
  background: #F0EDE0;
  color: #8A7A40;
}

.pub-badge--prep {
  background: #E8EEF0;
  color: #4A6A7A;
}

.pub-badge--accepted {
  background: #E2F0E6;
  color: #2D6E3F;
}

.pub-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  padding: 2px 10px;
  border-radius: 3px;
  border: 1px solid var(--crimson);
  color: var(--crimson);
  margin-right: 2px;
  transition: all 0.2s ease;
}

.pub-pill:hover {
  background: var(--crimson);
  color: #fff;
  opacity: 1;
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }

  .hero-photo img,
  .photo-placeholder {
    width: 160px;
    height: 192px;
    margin: 0 auto;
  }

  .hero-contact {
    justify-content: center;
  }

  .hero-name {
    font-size: 1.8rem;
  }

  .nav-inner {
    height: 48px;
  }

  .nav-name {
    font-size: 1rem;
  }

  .nav-links {
    gap: 16px;
  }

  .nav-link {
    font-size: 0.82rem;
  }

  .container {
    padding: 28px 16px 60px;
  }
}