/* ===================================
   DESIGN TOKENS
   =================================== */
:root {
  /* Colors */
  --bg-primary: #050710;
  --bg-secondary: #080c1a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);

  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-tertiary: #06b6d4;
  --accent-glow: rgba(99, 102, 241, 0.4);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #475569;

  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(99, 102, 241, 0.4);

  --gradient-hero: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);

  /* Typography */
  --font-sans: 'Inter', sans-serif;
  --font-display: 'Space Grotesk', sans-serif;

  /* Spacing */
  --section-gap: 120px;
  --container-max: 1200px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.2);
  --shadow-strong: 0 20px 60px rgba(0,0,0,0.5);
}

/* ===================================
   RESET & BASE
   =================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/* ===================================
   BACKGROUND PARTICLES
   =================================== */
.bg-particles {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  animation: floatParticle linear infinite;
  opacity: 0;
}

@keyframes floatParticle {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.2; }
  100% { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* ===================================
   NAVIGATION
   =================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(5, 7, 16, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-link {
  padding: 6px 14px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.nav-cta {
  padding: 8px 20px;
  background: var(--gradient-hero);
  border-radius: 100px;
  font-size: 0.88rem;
  font-weight: 600;
  color: white;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px var(--accent-glow);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--accent-glow);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  z-index: 1;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 500;
  color: #4ade80;
  margin-bottom: 32px;
  animation: fadeInDown 0.6s ease both;
}

.badge-dot {
  width: 8px; height: 8px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
}

/* Avatar */
.hero-avatar-wrapper {
  position: relative;
  display: inline-block;
  margin-bottom: 32px;
  animation: fadeInDown 0.6s ease 0.1s both;
}

.hero-avatar {
  width: 140px; height: 140px;
  border-radius: 50%;
  object-fit: cover;
  position: relative;
  z-index: 2;
  border: 3px solid rgba(255,255,255,0.1);
}

.avatar-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 164px; height: 164px;
  border-radius: 50%;
  background: var(--gradient-hero);
  z-index: 1;
  animation: spin 8s linear infinite;
  filter: blur(1px);
}

@keyframes spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.avatar-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 200px; height: 200px;
  background: radial-gradient(ellipse, var(--accent-glow), transparent 70%);
  border-radius: 50%;
  z-index: 0;
  animation: glowPulse 3s ease infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 20px;
  animation: fadeInDown 0.6s ease 0.2s both;
}

.gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--accent-tertiary);
  font-weight: 500;
  margin-bottom: 20px;
  min-height: 1.8em;
  animation: fadeInDown 0.6s ease 0.3s both;
}

.typing-text::after {
  content: '|';
  animation: blink 1s ease infinite;
  margin-left: 2px;
  color: var(--accent-primary);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 580px;
  margin: 0 auto 28px;
  animation: fadeInDown 0.6s ease 0.4s both;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
  animation: fadeInDown 0.6s ease 0.5s both;
}

.tag {
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.tag:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 56px;
  animation: fadeInDown 0.6s ease 0.6s both;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient-hero);
  color: white;
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 40px var(--accent-glow), 0 8px 24px rgba(0,0,0,0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  padding: 12px 28px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  display: inline-flex;
}

.btn-outline:hover {
  background: var(--accent-primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 0 24px var(--accent-glow);
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  animation: fadeInDown 0.6s ease 0.7s both;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: fadeIn 1s ease 1s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-primary), transparent);
  animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ===================================
   LAYOUT: SECTIONS & CONTAINER
   =================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-gap) 0;
  position: relative;
  z-index: 1;
}

.section-dark {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-family: monospace;
  color: var(--accent-primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 12px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 4px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto;
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-hero);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.about-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card), 0 0 30px rgba(99, 102, 241, 0.1);
}

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

.about-card.featured {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.04) 100%);
  border-color: rgba(99, 102, 241, 0.3);
}

.about-card.featured::before {
  opacity: 1;
}

.card-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.about-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}

.skill-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* ===================================
   CAREER SECTION
   =================================== */
.career-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.career-card {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  position: relative;
}

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

.career-card.highlight {
  background: var(--gradient-card);
  border-color: rgba(99, 102, 241, 0.3);
}

.career-number {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.2;
  position: absolute;
  top: 24px; right: 24px;
  line-height: 1;
}

.career-card h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.career-card p {
  color: var(--text-secondary);
  font-size: 0.93rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.career-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.career-tags span {
  padding: 4px 12px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 500;
}

/* Achievements */
.achievements {
  border-top: 1px solid var(--border);
  padding-top: 48px;
}

.achievements-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--text-secondary);
}

.achievement-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.achievement-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.achievement-item:hover {
  border-color: rgba(34, 197, 94, 0.3);
  background: rgba(34, 197, 94, 0.03);
}

.ach-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.achievement-item p {
  color: var(--text-secondary);
  font-size: 0.93rem;
  line-height: 1.6;
}

.achievement-item strong {
  color: var(--text-primary);
}

/* ===================================
   PROJECTS SECTION
   =================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.project-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity 0.3s ease;
  border-radius: inherit;
  pointer-events: none;
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-card), 0 0 40px rgba(99, 102, 241, 0.12);
}

.project-card:hover::after {
  opacity: 1;
}

.project-card.featured {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.07) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.project-icon {
  font-size: 2rem;
}

.project-links {
  display: flex;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.project-link:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
}

.featured-badge {
  position: absolute;
  top: 16px;
  right: 60px;
  padding: 3px 10px;
  background: var(--gradient-hero);
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  color: white;
  z-index: 2;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.tech-badge {
  padding: 3px 10px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.15);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--accent-tertiary);
  font-weight: 500;
  font-family: monospace;
}

.projects-cta {
  text-align: center;
}

/* ===================================
   SPEAKING / TIMELINE
   =================================== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-primary), transparent);
}

.timeline-item {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
  position: relative;
  align-items: flex-start;
}

.timeline-dot {
  width: 12px; height: 12px;
  background: var(--border);
  border: 2px solid var(--accent-primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
  position: relative;
  left: -24px + 6px;
  z-index: 2;
}

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

.timeline-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  min-width: 110px;
  padding-top: 4px;
}

.timeline-card {
  flex: 1;
  padding: 28px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

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

.talk-flag {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.timeline-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-style: italic;
}

.talk-event {
  font-size: 0.88rem;
  color: var(--accent-primary);
  margin-bottom: 6px;
}

.talk-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

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

.talk-link {
  font-size: 0.82rem;
  color: var(--accent-tertiary);
  font-weight: 500;
  transition: all 0.2s ease;
  border-bottom: 1px solid transparent;
}

.talk-link:hover {
  border-color: var(--accent-tertiary);
}

/* ===================================
   CERTIFICATIONS
   =================================== */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.cert-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  cursor: pointer;
  color: inherit;
}

.cert-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.cert-logo {
  font-size: 2rem;
  flex-shrink: 0;
}

.cert-info {
  flex: 1;
}

.cert-org {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.cert-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cert-year {
  font-size: 0.78rem;
  color: var(--accent-primary);
  font-weight: 500;
}

.cert-arrow {
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.cert-card:hover .cert-arrow {
  color: var(--accent-primary);
  transform: translateX(4px);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.section-contact {
  background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(99, 102, 241, 0.04) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 640px;
  margin: 0 auto 32px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  color: inherit;
}

.contact-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.contact-icon {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-sm);
  color: var(--accent-primary);
  flex-shrink: 0;
}

.contact-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 2px;
}

.contact-value {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
}

.contact-location {
  display: flex;
  justify-content: center;
  gap: 32px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer .footer-sub {
  font-size: 0.78rem;
  margin-top: 4px;
  opacity: 0.6;
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Intersection Observer Animation Classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .career-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }
}

@media (max-width: 640px) {
  :root { --section-gap: 80px; }

  .about-grid,
  .projects-grid,
  .certs-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 20px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .timeline-item {
    flex-direction: column;
    gap: 12px;
  }

  .contact-location {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .nav-cta {
    padding: 8px 14px;
    font-size: 0.8rem;
  }
}