/* ========================================
   Silvio Meneguzzo - Personal Academic Site
   Color palette: Cream/warm inspired by Anthropic
   ======================================== */

:root {
  --bg-primary: #faf9f4;
  --bg-secondary: #f0efe8;
  --bg-card: #ffffff;
  --bg-dark: #1a1a2e;
  --bg-dark-secondary: #16162a;
  --text-primary: #2d2d3a;
  --text-secondary: #5a5a6e;
  --text-light: #8a8a9a;
  --accent: #c96442;
  --accent-hover: #b55636;
  --accent-light: rgba(201, 100, 66, 0.1);
  --border: #e8e7e0;
  --border-light: #f0efe8;
  --white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 1100px;
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

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

/* ========================================
   Navigation
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 244, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

.site-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-text {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-links a {
  display: block;
  padding: 6px 14px;
  font-size: 0.9rem;
  font-weight: 450;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-light);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger { position: relative; }
.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* ========================================
   Hero Section (Home)
   ======================================== */
.hero {
  padding: 80px 0 60px;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 60px;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.hero-text .subtitle {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 20px;
}

.hero-text .bio {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-photo {
  position: relative;
}

.hero-photo img {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--border);
  box-shadow: var(--shadow-md);
}

.hero-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ========================================
   Affiliations Bar
   ======================================== */
.affiliations {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.affiliations-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
  margin-bottom: 20px;
  font-weight: 500;
}

.affiliations-logos {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.affiliations-logos a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.affiliations-logos a:hover { color: var(--accent); }

.affiliation-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--accent);
}

/* ========================================
   Section Styles
   ======================================== */
.section {
  padding: 60px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.section-divider {
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-bottom: 24px;
}

/* ========================================
   Cards
   ======================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 10px;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}

.card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.page-header p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
}

/* ========================================
   Publications
   ======================================== */
.pub-year {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 40px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.pub-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}

.pub-item:last-child { border-bottom: none; }

.pub-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 6px;
}

.pub-title a {
  color: var(--text-primary);
}

.pub-title a:hover {
  color: var(--accent);
}

.pub-authors {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.pub-authors strong {
  color: var(--text-primary);
}

.pub-venue {
  font-size: 0.88rem;
  color: var(--text-light);
  font-style: italic;
}

.pub-links {
  margin-top: 8px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pub-link {
  font-size: 0.8rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 500;
  transition: all var(--transition);
}

.pub-link:hover {
  background: var(--accent);
  color: var(--white);
}

/* ========================================
   Timeline
   ======================================== */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -37px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-date {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.timeline-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-org {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.timeline-desc ul {
  padding-left: 18px;
  margin-top: 6px;
}

.timeline-desc li {
  margin-bottom: 4px;
}

/* ========================================
   Research Areas
   ======================================== */
.research-area {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  transition: all var(--transition);
}

.research-area:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.research-area h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.research-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.research-area p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========================================
   Tags / Skills
   ======================================== */
.tag-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.tag {
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 500;
  border: 1px solid var(--border);
}

/* ========================================
   Talks / Events
   ======================================== */
.talk-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-light);
  align-items: start;
}

.talk-date {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 500;
  padding-top: 3px;
}

.talk-content h3 {
  font-size: 1.02rem;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.4;
}

.talk-content .talk-type {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 4px;
}

.talk-content .talk-venue {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.talk-content .talk-location {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* ========================================
   Contact
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.contact-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}

.contact-label {
  font-size: 0.8rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.contact-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* ========================================
   Highlights (Home)
   ======================================== */
.highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.highlight-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.highlight-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ========================================
   News Section
   ======================================== */
.news-list {
  list-style: none;
}

.news-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  gap: 16px;
  align-items: baseline;
}

.news-date {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--text-light);
  flex-shrink: 0;
  min-width: 90px;
}

.news-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.news-text a {
  font-weight: 500;
}

/* ========================================
   EU Projects
   ======================================== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition);
}

.project-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.project-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--accent);
}

.project-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 40px 0 24px;
  margin-top: 60px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 20px;
}

.footer-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}

.footer-affiliations a {
  color: rgba(255,255,255,0.5);
  font-size: 0.88rem;
}

.footer-affiliations a:hover {
  color: var(--white);
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a {
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.3);
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
}

.footer-bottom a:hover {
  color: var(--white);
}

/* ========================================
   Page Content (Markdown)
   ======================================== */
.page-content {
  padding: 40px 0 60px;
}

.page-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 12px;
}

.page-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.page-content ul, .page-content ol {
  padding-left: 20px;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.page-content li {
  margin-bottom: 6px;
}

/* ========================================
   Education
   ======================================== */
.edu-item {
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.edu-degree {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.edu-school {
  font-size: 0.92rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 2px;
}

.edu-date {
  font-size: 0.82rem;
  color: var(--text-light);
  font-family: var(--font-mono);
}

.edu-details {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 8px;
  line-height: 1.6;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .hero-photo { order: -1; margin: 0 auto; }
  .hero-photo img { width: 200px; height: 200px; }

  .hero-text h1 { font-size: 2rem; }
  .hero-links { justify-content: center; }

  .highlights { grid-template-columns: repeat(3, 1fr); gap: 16px; }

  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px 24px;
    gap: 0;
    box-shadow: var(--shadow-md);
  }

  .nav-links.nav-open { display: flex; }

  .talk-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-content { flex-direction: column; gap: 20px; text-align: center; }

  .page-header h1 { font-size: 1.7rem; }
}

@media (max-width: 480px) {
  .highlights { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}