:root {
  --bg: #06080f;
  --bg-elevated: #0c1019;
  --bg-card: rgba(12, 16, 28, 0.65);
  --border: rgba(99, 179, 237, 0.12);
  --border-hover: rgba(56, 189, 248, 0.35);
  --text: #e8edf5;
  --text-muted: #7a8699;
  --accent: #38bdf8;
  --accent-secondary: #818cf8;
  --accent-glow: rgba(56, 189, 248, 0.25);
  --success: #34d399;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Space Grotesk', system-ui, sans-serif;
  --radius: 14px;
  --radius-sm: 8px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Background effects */
.particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 20%, transparent 70%);
  pointer-events: none;
  animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.bg-glow-1 {
  width: 600px;
  height: 600px;
  top: -200px;
  right: -100px;
  background: rgba(56, 189, 248, 0.08);
  animation: floatGlow1 20s ease-in-out infinite;
}

.bg-glow-2 {
  width: 500px;
  height: 500px;
  bottom: 10%;
  left: -150px;
  background: rgba(129, 140, 248, 0.06);
  animation: floatGlow2 25s ease-in-out infinite;
}

.bg-glow-3 {
  width: 400px;
  height: 400px;
  top: 40%;
  right: 10%;
  background: rgba(52, 211, 153, 0.04);
  animation: floatGlow3 18s ease-in-out infinite;
}

@keyframes floatGlow1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-60px, 40px) scale(1.1); }
  66% { transform: translate(30px, -30px) scale(0.95); }
}

@keyframes floatGlow2 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(80px, -60px); }
}

@keyframes floatGlow3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-50px, 50px) scale(1.15); }
}

/* Floating shapes */
.floating-shapes {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.shape {
  position: absolute;
  opacity: 0.15;
}

.shape-1 {
  width: 80px;
  height: 80px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  top: 15%;
  left: 8%;
  animation: floatShape1 22s ease-in-out infinite;
}

.shape-2 {
  width: 40px;
  height: 40px;
  background: rgba(129, 140, 248, 0.2);
  border-radius: 6px;
  top: 25%;
  right: 12%;
  animation: floatShape2 18s ease-in-out infinite;
  transform: rotate(45deg);
}

.shape-3 {
  width: 60px;
  height: 60px;
  border: 1px solid var(--accent-secondary);
  top: 60%;
  left: 5%;
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  animation: floatShape3 24s ease-in-out infinite;
}

.shape-4 {
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  top: 70%;
  right: 20%;
  box-shadow: 0 0 20px var(--accent-glow);
  animation: floatShape4 15s ease-in-out infinite;
}

.shape-5 {
  width: 100px;
  height: 100px;
  border: 1px dashed rgba(56, 189, 248, 0.2);
  border-radius: 50%;
  bottom: 20%;
  right: 8%;
  animation: spinSlow 30s linear infinite;
}

.shape-6 {
  width: 30px;
  height: 30px;
  border: 2px solid rgba(52, 211, 153, 0.3);
  top: 45%;
  right: 25%;
  animation: floatShape2 20s ease-in-out infinite reverse;
}

.shape-bracket {
  font-family: var(--mono);
  font-size: 4rem;
  font-weight: 300;
  color: var(--accent);
  opacity: 0.06;
  line-height: 1;
}

.shape-bracket-1 {
  top: 20%;
  left: 3%;
  animation: floatBracket 16s ease-in-out infinite;
}

.shape-bracket-2 {
  bottom: 30%;
  right: 5%;
  animation: floatBracket 20s ease-in-out infinite reverse;
}

.shape-code {
  font-family: var(--mono);
  font-size: 1.5rem;
  color: var(--accent-secondary);
  opacity: 0.08;
  top: 35%;
  right: 6%;
  animation: floatCode 12s ease-in-out infinite;
}

@keyframes floatShape1 {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(30px, -40px) rotate(90deg); }
  50% { transform: translate(-20px, 20px) rotate(180deg); }
  75% { transform: translate(40px, 30px) rotate(270deg); }
}

@keyframes floatShape2 {
  0%, 100% { transform: translate(0, 0) rotate(45deg); }
  50% { transform: translate(-35px, 45px) rotate(225deg); }
}

@keyframes floatShape3 {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(25px, -30px) rotate(120deg); }
  66% { transform: translate(-30px, 20px) rotate(240deg); }
}

@keyframes floatShape4 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.15; }
  50% { transform: translate(20px, -50px) scale(1.5); opacity: 0.3; }
}

@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes floatBracket {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50% { transform: translateY(-30px) rotate(5deg); }
}

@keyframes floatCode {
  0%, 100% { transform: translate(0, 0); opacity: 0.08; }
  50% { transform: translate(-20px, 25px); opacity: 0.12; }
}

main, .nav, .footer {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.25s, opacity 0.25s;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
}

.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1.25rem;
  background: rgba(6, 8, 15, 0.75);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.nav-logo::before {
  content: '~/';
  color: var(--accent);
  margin-right: 2px;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(56, 189, 248, 0.08);
}

.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--success);
  padding: 0.35rem 0.85rem;
  background: rgba(52, 211, 153, 0.08);
  border-radius: 999px;
  border: 1px solid rgba(52, 211, 153, 0.2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.nav-status.unavailable {
  color: var(--text-muted);
  background: rgba(122, 134, 153, 0.08);
  border-color: rgba(122, 134, 153, 0.2);
}

.nav-status.unavailable .status-dot {
  background: var(--text-muted);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 4px rgba(52, 211, 153, 0); }
}

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

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 1.5rem 4rem;
}

.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.4rem 0.85rem;
  background: rgba(56, 189, 248, 0.06);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.hero-badge-dot {
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.hero-title {
  font-size: clamp(2.75rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-cursor {
  font-family: var(--mono);
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  animation: blink 1.2s step-end infinite;
  font-weight: 400;
}

.hero-role {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.hero-role::before { content: '> '; opacity: 0.5; }

.hero-tagline {
  font-size: 1.125rem;
  color: var(--text);
  font-weight: 500;
  margin-bottom: 1rem;
}

.hero-bio {
  color: var(--text-muted);
  font-size: 0.9375rem;
  max-width: 500px;
  margin-bottom: 0.75rem;
  line-height: 1.7;
}

.hero-location {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-location::before {
  content: '// ';
  color: rgba(56, 189, 248, 0.4);
}

.hero-actions {
  display: flex;
  gap: 0.875rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #0ea5e9 100%);
  color: #06080f;
  border: none;
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--accent-glow);
  color: #06080f;
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--border);
  background: rgba(12, 16, 28, 0.5);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  border-color: var(--border-hover);
  background: rgba(56, 189, 248, 0.06);
  color: var(--accent);
}

/* Photo */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.photo-wrapper {
  position: relative;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
}

/* Orbiting dots around photo */
.orbit {
  position: absolute;
  border: 1px solid rgba(56, 189, 248, 0.1);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.orbit span {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
  top: -3px;
  left: 50%;
  margin-left: -3px;
}

.orbit-1 {
  width: calc(100% + 40px);
  height: calc(100% + 40px);
  animation: orbitSpin 12s linear infinite;
}

.orbit-2 {
  width: calc(100% + 70px);
  height: calc(100% + 70px);
  animation: orbitSpin 18s linear infinite reverse;
  border-style: dashed;
  opacity: 0.5;
}

.orbit-2 span {
  width: 4px;
  height: 4px;
  background: var(--accent-secondary);
  top: auto;
  bottom: -2px;
  box-shadow: 0 0 10px rgba(129, 140, 248, 0.5);
}

.orbit-3 {
  width: calc(100% + 100px);
  height: calc(100% + 100px);
  animation: orbitSpin 25s linear infinite;
  opacity: 0.3;
}

.orbit-3 span {
  width: 3px;
  height: 3px;
  background: var(--success);
  top: 50%;
  left: -1.5px;
  margin-left: 0;
  margin-top: -1.5px;
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.5);
}

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

.photo-ring {
  position: absolute;
  inset: -3px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary), var(--accent));
  background-size: 200% 200%;
  animation: gradientShift 6s ease infinite;
  opacity: 0.6;
  z-index: 0;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.photo-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 16px;
  overflow: hidden;
  background: var(--bg-elevated);
  z-index: 1;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 12%;
  filter: contrast(1.08) saturate(0.9) brightness(0.95);
  display: block;
}

.photo-scanline {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  pointer-events: none;
  border-radius: 16px;
}

.photo-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 8, 15, 0.5) 0%, transparent 40%);
  z-index: 1;
  pointer-events: none;
}

/* Stats panel — unified 2×2 grid */
.stats-panel {
  background: rgba(8, 12, 22, 0.9);
  border: 1px solid rgba(99, 179, 237, 0.15);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.stat-card {
  padding: 1.35rem 1.5rem;
  background: transparent;
  border-right: 1px solid rgba(99, 179, 237, 0.1);
  border-bottom: 1px solid rgba(99, 179, 237, 0.1);
  transition: background 0.25s;
  position: relative;
}

.stat-card:nth-child(2n) {
  border-right: none;
}

.stat-card:nth-child(n + 3) {
  border-bottom: none;
}

.stat-card:hover {
  background: rgba(56, 189, 248, 0.04);
}

.stat-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.65rem;
  line-height: 1.3;
}

.stat-value {
  font-family: var(--sans);
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.02em;
}

/* Sections */
.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.section-alt {
  max-width: 100%;
  background: rgba(12, 16, 28, 0.4);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-inner {
  max-width: 1180px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.section-num {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  opacity: 0.5;
  padding-top: 0.35rem;
}

.section-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-label::before { content: '[ '; opacity: 0.5; }
.section-label::after { content: ' ]'; opacity: 0.5; }

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Experience */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  opacity: 0.3;
}

.exp-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.75rem 1.75rem 2.25rem;
  margin-left: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
  position: relative;
}

.exp-card::before {
  content: '';
  position: absolute;
  left: -1.05rem;
  top: 1.85rem;
  width: 9px;
  height: 9px;
  background: var(--bg);
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
}

.exp-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 4px 24px rgba(56, 189, 248, 0.06);
}

.exp-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-bottom: 0.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.exp-role {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.exp-company {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.exp-highlights {
  list-style: none;
  margin-bottom: 1rem;
}

.exp-highlights li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.exp-highlights li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

.exp-tech, .project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.3rem 0.65rem;
  background: rgba(56, 189, 248, 0.06);
  color: var(--accent);
  border-radius: 4px;
  border: 1px solid rgba(56, 189, 248, 0.12);
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 12px 40px rgba(56, 189, 248, 0.08);
}

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: rgba(56, 189, 248, 0.04);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.project-card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-icon {
  color: var(--accent);
  font-size: 0.75rem;
}

.project-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.project-name a {
  color: var(--text);
  transition: color 0.2s;
}

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

.project-stats {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.8125rem;
  flex: 1;
  margin-bottom: 1rem;
  line-height: 1.65;
}

/* Research */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1rem;
}

.research-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.research-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent), var(--accent-secondary));
  opacity: 0.6;
}

.research-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px rgba(56, 189, 248, 0.08);
}

.research-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.research-status {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--success);
  padding: 0.25rem 0.6rem;
  background: rgba(52, 211, 153, 0.08);
  border-radius: 4px;
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.research-year {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.research-card .research-title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  line-height: 1.4;
}

.research-authors {
  font-size: 0.8125rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.research-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1rem;
}

.research-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

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

.research-link {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

/* Tutorials */
.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.tutorial-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.tutorial-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 12px 40px rgba(56, 189, 248, 0.08);
}

.tutorial-thumb-link {
  display: block;
  position: relative;
}

.tutorial-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-elevated);
}

.tutorial-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s, filter 0.4s;
}

.tutorial-card:hover .tutorial-thumb img {
  transform: scale(1.05);
  filter: brightness(0.85);
}

.tutorial-thumb-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.15), rgba(12, 16, 28, 0.8));
  color: #ef4444;
}

.tutorial-thumb-placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.6;
}

.tutorial-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 8, 15, 0.35);
  transition: background 0.3s;
}

.tutorial-play svg {
  width: 48px;
  height: 48px;
  color: #fff;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
  transition: transform 0.3s;
}

.tutorial-card:hover .tutorial-play {
  background: rgba(6, 8, 15, 0.5);
}

.tutorial-card:hover .tutorial-play svg {
  transform: scale(1.1);
}

.tutorial-body {
  padding: 1.25rem;
}

.tutorial-meta {
  display: flex;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tutorial-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.tutorial-title a {
  color: var(--text);
  transition: color 0.2s;
}

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

.tutorial-desc {
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.tutorial-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tutorial-watch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.tutorial-watch svg {
  color: #ef4444;
  flex-shrink: 0;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.875rem;
}

.skill-block {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.35rem;
  transition: border-color 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}

.skill-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  opacity: 0;
  transition: opacity 0.3s;
}

.skill-block:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.skill-block:hover::before { opacity: 1; }

.skill-block h3 {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.skill-block p {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.65;
}

/* Contact */
.contact-section { padding-bottom: 5rem; }

.contact-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3.5rem 2rem;
  text-align: center;
  overflow: hidden;
}

.contact-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
  pointer-events: none;
  animation: contactPulse 4s ease-in-out infinite;
}

@keyframes contactPulse {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

.contact-label {
  display: inline-block;
  margin-bottom: 1rem;
}

.contact-card h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  position: relative;
}

.contact-card > p {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 1.75rem;
  font-size: 0.9375rem;
  position: relative;
}

.contact-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
  position: relative;
}

.contact-badge {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--success);
  padding: 0.35rem 0.85rem;
  background: rgba(52, 211, 153, 0.08);
  border-radius: 999px;
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  position: relative;
}

.contact-links a {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
}

.contact-links a:hover { color: var(--text); }

/* Footer */
.footer {
  text-align: center;
  padding: 1.75rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.footer a {
  color: var(--text-muted);
}

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

/* Responsive */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-visual { order: -1; }
  .photo-wrapper { max-width: 260px; }
  .nav-links { display: none; }
  .hero { min-height: auto; padding-top: 7rem; }
  .timeline::before { display: none; }
  .exp-card { margin-left: 0; padding-left: 1.75rem; }
  .exp-card::before { display: none; }
  .shape-bracket, .shape-code { display: none; }
  .orbit-3 { display: none; }
}

@media (max-width: 480px) {
  .stat-card { padding: 1rem; }
  .stat-value { font-size: 1.35rem; }
  .stat-label { font-size: 0.5625rem; }
  .contact-card { padding: 2.5rem 1.25rem; }
  .section-header { flex-direction: column; gap: 0.5rem; }
  .floating-shapes .shape-5,
  .floating-shapes .shape-6 { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-cursor, .status-dot, .photo-ring { animation: none; }
  .bg-grid, .bg-glow-1, .bg-glow-2, .bg-glow-3,
  .shape, .orbit, .contact-glow { animation: none; }
  .floating-shapes { display: none; }
}