/* ============================================
   Marco Angioli - Academic Portfolio
   ============================================ */

:root {
  --bg: #0a0a0f;
  --bg-section: #0e0e16;
  --bg-card: #131320;
  --bg-card-hover: #1a1a2e;
  --accent: #6c63ff;
  --accent-light: #8b83ff;
  --accent-glow: rgba(108, 99, 255, 0.3);
  --cyan: #22d3ee;
  --cyan-glow: rgba(34, 211, 238, 0.2);
  --text: #e8e8f0;
  --text-muted: #8888a0;
  --text-dim: #555570;
  --white: #ffffff;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(108, 99, 255, 0.3);
  --radius: 12px;
  --radius-lg: 20px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1140px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.5px;
}

.nav-logo .dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(20px);
  padding: 1rem 1.5rem 2rem;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 99;
  border-bottom: 1px solid var(--border);
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  color: var(--text-muted);
  font-size: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.mobile-menu a:hover { color: var(--white); }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 1.5rem 60px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108, 99, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 99, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
}

.hero-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(108, 99, 255, 0.12) 0%, rgba(34, 211, 238, 0.05) 40%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 4rem;
}

.hero-text { flex: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.25);
  color: var(--accent-light);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 1rem;
  letter-spacing: -1.5px;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-light), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.hero-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.hero-social {
  display: flex;
  gap: 0.75rem;
}

.hero-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1rem;
  transition: all var(--transition);
}

.hero-social a:hover {
  color: var(--accent-light);
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.1);
  transform: translateY(-2px);
}

/* Hero Image */
.hero-image {
  flex-shrink: 0;
}

.hero-photo-wrapper {
  position: relative;
  width: 280px;
  height: 280px;
}

.hero-photo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  position: relative;
  z-index: 1;
  border: 3px solid rgba(108, 99, 255, 0.3);
}

.photo-ring {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 2px dashed rgba(108, 99, 255, 0.2);
  animation: spin 30s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}


/* Stats Bar */
.stats-bar {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 3rem auto 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  padding: 1.5rem 2rem;
  background: rgba(19, 19, 32, 0.6);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-light);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 0.2rem;
  display: block;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-light);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: rgba(108, 99, 255, 0.05);
  transform: translateY(-2px);
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: 6rem 0;
}

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

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  letter-spacing: -0.5px;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
}

.section-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  max-width: 700px;
}

.subsection-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text .lead {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 1rem;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.about-text strong { color: var(--text); }

.about-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.detail-card {
  display: flex;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.detail-card:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.detail-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(108, 99, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  font-size: 1rem;
  flex-shrink: 0;
}

.detail-card h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.2rem;
}

.detail-card p {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.4;
}

/* ============================================
   RESEARCH
   ============================================ */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.research-card {
  padding: 2rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.research-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  opacity: 0;
  transition: opacity var(--transition);
}

.research-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.research-card:hover::before { opacity: 1; }

.research-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.15), rgba(34, 211, 238, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent-light);
  margin-bottom: 1.25rem;
}

.research-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.research-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.research-card strong { color: var(--cyan); font-weight: 600; }

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.research-tags span {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(108, 99, 255, 0.08);
  border: 1px solid rgba(108, 99, 255, 0.15);
  color: var(--accent-light);
  font-weight: 500;
}

/* Results */
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.result-item {
  text-align: center;
  padding: 1.5rem 1rem;
  background: rgba(108, 99, 255, 0.04);
  border: 1px solid rgba(108, 99, 255, 0.1);
  border-radius: var(--radius);
}

.result-value sup {
  font-size: 0.65em;
  vertical-align: super;
  line-height: 0;
}

.result-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-light), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
}

.result-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ============================================
   PUBLICATIONS
   ============================================ */
.pub-filters {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.pub-filter {
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}

.pub-filter:hover {
  border-color: var(--accent);
  color: var(--text);
}

.pub-filter.active {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pub-item {
  display: flex;
  gap: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
  align-items: flex-start;
}

.pub-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.pub-item.hidden { display: none; }

.pub-year {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-light);
  flex-shrink: 0;
  padding-top: 0.15rem;
}

.pub-body { flex: 1; }

.pub-type-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.pub-type-badge.journal {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent-light);
}

.pub-type-badge.conference {
  background: rgba(34, 211, 238, 0.12);
  color: var(--cyan);
}

.pub-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.35rem;
  line-height: 1.4;
}

.pub-authors {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.pub-authors strong { color: var(--accent-light); }

.pub-venue {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ============================================
   PROJECTS
   ============================================ */
.featured-project {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  padding: 2.5rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  margin-bottom: 3rem;
}

.featured-project::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--cyan), var(--accent));
}

.featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.75rem;
}

.featured-project-content h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.featured-project-content p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.featured-project-content strong { color: var(--text); }

.featured-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.featured-tech span {
  font-size: 0.72rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.15);
  color: var(--cyan);
  font-weight: 500;
}

.featured-project-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.pipeline-diagram {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
}

.pipeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.2rem 1rem;
  background: rgba(108, 99, 255, 0.06);
  border: 1px solid rgba(108, 99, 255, 0.15);
  border-radius: var(--radius);
  min-width: 80px;
}

.pipeline-step i {
  font-size: 1.3rem;
  color: var(--accent-light);
}

.pipeline-step span {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pipeline-arrow {
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* OSS Grid */
.oss-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.oss-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.oss-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.oss-header {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.oss-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(108, 99, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.oss-header h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.1rem;
}

.oss-org {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.oss-card p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

.oss-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.oss-tech span {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.15);
  color: var(--cyan);
  font-weight: 500;
}

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

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.skill-category {
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.skill-category h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-category h4 i { color: var(--accent-light); }

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-tags span {
  font-size: 0.78rem;
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 500;
  transition: all var(--transition);
}

.skill-tags span:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: rgba(108, 99, 255, 0.06);
}

/* ============================================
   EXPERIENCE / EDUCATION
   ============================================ */
.exp-edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), rgba(108, 99, 255, 0.1));
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

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

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  transform: translateX(-4px);
}

.timeline-dot.dot-accent {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-highlight .timeline-content {
  background: rgba(108, 99, 255, 0.05);
  border: 1px solid rgba(108, 99, 255, 0.15);
  border-radius: var(--radius);
  padding: 1rem;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-light);
  font-weight: 500;
}

.timeline-content h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin: 0.3rem 0 0.2rem;
}

.timeline-place {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.timeline-content p:last-child {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* Training */
.training-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.training-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}

.training-item i {
  color: var(--accent-light);
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
  max-width: 700px;
}

.contact-text .lead {
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
  color: var(--text);
  text-decoration: none;
}

a.contact-card:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
  color: var(--text);
}

.contact-card i {
  font-size: 1.2rem;
  color: var(--accent-light);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(108, 99, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-card h4 {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.15rem;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--text);
}

.contact-social {
  display: flex;
  gap: 0.75rem;
}

.contact-social a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: all var(--transition);
}

.contact-social a:hover {
  color: var(--accent-light);
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.1);
  transform: translateY(-2px);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer p {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: 0.82rem;
  color: var(--text-muted);
}

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

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .research-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-project { grid-template-columns: 1fr; }
  .featured-project-visual { margin-top: 1rem; }
  .exp-edu-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .hero-content { flex-direction: column-reverse; text-align: center; gap: 2rem; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-social { justify-content: center; }
  .hero-photo-wrapper { width: 200px; height: 200px; }

  .stats-bar {
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 1.25rem;
  }
  .stat-divider { display: none; }

  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr 1fr; }

  .section { padding: 4rem 0; }
  .section-title { font-size: 1.6rem; }

  .pub-item { flex-direction: column; gap: 0.5rem; }

  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}

@media (max-width: 480px) {
  .results-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .hero { padding: 100px 1rem 40px; }
  .pipeline-arrow { display: none; }
  .pipeline-diagram { gap: 0.5rem; }
  .pipeline-step { min-width: 65px; padding: 0.8rem 0.6rem; }
}