/* ============================================
   FERI FEBRIA LAKSANA — PROFILE WEBSITE v3
   Bio-Digital Minimalism 2026 — Dark/Light
   ============================================ */

/* === DARK THEME (default) === */
:root,
[data-theme="dark"] {
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1422;
  --bg-card: rgba(15, 22, 40, 0.6);
  --bg-card-hover: rgba(20, 30, 55, 0.8);
  --bg-section-alt: #080c14;
  --bg-info-item: rgba(15, 20, 34, 0.5);
  --bg-nav-scrolled: rgba(10, 14, 23, 0.92);
  --bg-avatar-badge: rgba(10, 14, 23, 0.8);
  --bg-tag: rgba(255,255,255,0.04);
  --bg-job-period: rgba(255,255,255,0.04);

  --text-primary: #e8ecf4;
  --text-secondary: #8b95a8;
  --text-muted: #5a6478;

  --accent: #22c997;
  --accent-light: #34edb5;
  --accent-dim: rgba(34, 201, 151, 0.15);
  --accent-glow: rgba(34, 201, 151, 0.3);

  --gold: #d4a843;
  --gold-dim: rgba(212, 168, 67, 0.15);

  --purple: #8b5cf6;
  --purple-dim: rgba(139, 92, 246, 0.15);

  --blue: #3b82f6;
  --blue-dim: rgba(59, 130, 246, 0.15);

  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  --glass-blur: 20px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-primary-btn: 0 8px 24px rgba(34, 201, 151, 0.3);
  --shadow-cv-btn: 0 8px 24px rgba(212, 168, 67, 0.25);

  --grid-line: rgba(255,255,255,0.015);
  --skill-bar-bg: rgba(255,255,255,0.06);
  --cursor-glow: rgba(34, 201, 151, 0.06);

  /* Theme toggle */
  --toggle-bg: rgba(255,255,255,0.08);
  --toggle-border: rgba(255,255,255,0.12);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  /* Spacing */
  --section-padding: clamp(80px, 10vw, 140px);
  --container-max: 1200px;
  --container-px: clamp(20px, 4vw, 48px);

  /* Animation */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition: 0.3s var(--ease-out);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

/* === LIGHT THEME === */
[data-theme="light"] {
  --bg-primary: #f5f7fa;
  --bg-secondary: #eef1f6;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(255, 255, 255, 0.9);
  --bg-section-alt: #e8ecf2;
  --bg-info-item: rgba(0, 0, 0, 0.03);
  --bg-nav-scrolled: rgba(245, 247, 250, 0.92);
  --bg-avatar-badge: rgba(255, 255, 255, 0.85);
  --bg-tag: rgba(0,0,0,0.04);
  --bg-job-period: rgba(0,0,0,0.04);

  --text-primary: #1a1f2e;
  --text-secondary: #555e70;
  --text-muted: #8a92a2;

  --accent: #0fa77e;
  --accent-light: #12c594;
  --accent-dim: rgba(15, 167, 126, 0.1);
  --accent-glow: rgba(15, 167, 126, 0.2);

  --gold: #b8892a;
  --gold-dim: rgba(184, 137, 42, 0.1);

  --purple: #7c3aed;
  --purple-dim: rgba(124, 58, 237, 0.1);

  --blue: #2563eb;
  --blue-dim: rgba(37, 99, 235, 0.1);

  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);

  --glass-blur: 16px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-primary-btn: 0 8px 24px rgba(15, 167, 126, 0.2);
  --shadow-cv-btn: 0 8px 24px rgba(184, 137, 42, 0.15);

  --grid-line: rgba(0,0,0,0.03);
  --skill-bar-bg: rgba(0,0,0,0.06);
  --cursor-glow: rgba(15, 167, 126, 0.04);

  --toggle-bg: rgba(0,0,0,0.06);
  --toggle-border: rgba(0,0,0,0.1);
}

/* Smooth theme transition */
html {
  transition: background-color 0.4s ease, color 0.4s ease;
}
html[data-theme] body,
html[data-theme] .glass,
html[data-theme] .nav,
html[data-theme] .section,
html[data-theme] .section-alt,
html[data-theme] .footer {
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* === CURSOR GLOW === */
.cursor-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cursor-glow) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: opacity 0.5s;
  opacity: 0;
}
body:hover .cursor-glow { opacity: 1; }
[data-theme="light"] .cursor-glow { width: 400px; height: 400px; }

/* === GLASS === */
.glass {
  background: var(--bg-card);
  border: 1px solid var(--border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.glass:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

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

/* === THEME TOGGLE === */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--toggle-border);
  background: var(--toggle-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: rotate(15deg);
}

/* Sun/Moon icon switching */
.theme-icon { transition: transform 0.4s var(--ease-spring), opacity 0.3s; position: absolute; }
[data-theme="dark"] .theme-icon.sun { opacity: 1; transform: rotate(0deg) scale(1); }
[data-theme="dark"] .theme-icon.moon { opacity: 0; transform: rotate(-90deg) scale(0.5); }
[data-theme="light"] .theme-icon.sun { opacity: 0; transform: rotate(90deg) scale(0.5); }
[data-theme="light"] .theme-icon.moon { opacity: 1; transform: rotate(0deg) scale(1); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 var(--container-px);
  transition: background 0.4s, box-shadow 0.4s, padding 0.4s;
}
.nav.scrolled {
  background: var(--bg-nav-scrolled);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
  padding-top: 0;
  padding-bottom: 0;
}
.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  transition: padding 0.4s;
}
.nav.scrolled .nav-inner { padding: 14px 0; }

.nav-logo {
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.dot { color: var(--accent); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 28px;
}
.nav-link {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  transition: color var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent);
  transition: width 0.4s var(--ease-out);
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.nav-cta {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 100px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(34, 201, 151, 0.2);
  transition: all var(--transition);
  cursor: pointer;
}
.nav-cta:hover {
  background: var(--accent);
  color: var(--bg-primary);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 20px 0;
  gap: 8px;
  max-width: var(--container-max);
  margin: 0 auto;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.mobile-link:hover { color: var(--accent); }

@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .nav-actions .nav-cta { display: none; }
}

/* === HERO SECTION === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px var(--container-px) 80px;
  max-width: var(--container-max);
  margin: 0 auto;
  gap: clamp(40px, 6vw, 80px);
}

.hero-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
}
[data-theme="light"] .orb { opacity: 0.25; }

.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(34, 201, 151, 0.3), transparent 70%);
  top: -200px; right: -100px;
  animation: orbFloat 20s ease-in-out infinite;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.25), transparent 70%);
  bottom: -100px; left: -50px;
  animation: orbFloat 25s ease-in-out infinite reverse;
}
.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.2), transparent 70%);
  top: 40%; left: 50%;
  animation: orbFloat 18s ease-in-out infinite 5s;
}
.orb-4 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(34, 201, 151, 0.2), transparent 70%);
  top: -150px; left: 20%;
  animation: orbFloat 22s ease-in-out infinite;
}
.orb-5 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
  bottom: -50px; right: 10%;
  animation: orbFloat 26s ease-in-out infinite reverse;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 60px 60px;
  mask: radial-gradient(ellipse at 50% 50%, black 20%, transparent 70%);
}

.hero-content {
  flex: 1;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 12px;
  border-radius: 100px;
  background: var(--accent-dim);
  border: 1px solid rgba(34, 201, 151, 0.2);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s var(--ease-out) both;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px transparent; }
}

.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
}
.hero-name em {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
}

.hero-title {
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}
.hero-subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1.02rem);
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 32px;
  animation: fadeInUp 0.8s var(--ease-out) 0.3s both;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}

.btn-primary {
  padding: 12px 28px;
  border-radius: 100px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.88rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
[data-theme="dark"] .btn-primary { color: var(--bg-primary); }
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.2));
  opacity: 0;
  transition: opacity var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-primary-btn); }
.btn-primary:hover::before { opacity: 1; }

.btn-ghost {
  padding: 12px 28px;
  border-radius: 100px;
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.btn-cv {
  padding: 12px 28px;
  border-radius: 100px;
  border: 1px solid rgba(212, 168, 67, 0.3);
  background: var(--gold-dim);
  color: var(--gold);
  font-weight: 600;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.btn-cv:hover {
  background: var(--gold);
  color: #fff;
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cv-btn);
}
[data-theme="dark"] .btn-cv:hover { color: var(--bg-primary); }
.btn-cv:hover svg { animation: downloadBounce 0.6s var(--ease-spring); }
@keyframes downloadBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(3px); }
}

.hero-stats {
  display: flex;
  gap: 24px;
  align-items: center;
  animation: fadeInUp 0.8s var(--ease-out) 0.5s both;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}
.stat-plus {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-top: 2px;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* Avatar Card */
.hero-avatar-wrap {
  position: relative;
  flex-shrink: 0;
  animation: fadeInRight 1s var(--ease-out) 0.3s both;
}

.avatar-ring {
  position: absolute;
  border-radius: 24px;
  border: 1px solid;
  animation: ringPulse 4s ease-in-out infinite;
}
.ring-1 {
  inset: -12px;
  border-color: rgba(34, 201, 151, 0.15);
  animation-delay: 0s;
}
.ring-2 {
  inset: -28px;
  border-color: rgba(34, 201, 151, 0.08);
  animation-delay: 1s;
}
.ring-3 {
  inset: -44px;
  border-color: rgba(34, 201, 151, 0.04);
  animation-delay: 2s;
}

@keyframes ringPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.02); }
}

.avatar-card {
  width: clamp(260px, 28vw, 340px);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  position: relative;
}

.avatar-img-wrap {
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
  position: relative;
}
.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.6s var(--ease-out);
}
.avatar-card:hover .avatar-img { transform: scale(1.03); }

.avatar-badge {
  padding: 12px 16px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-avatar-badge);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: fadeInUp 0.8s var(--ease-out) 1s both;
}
.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollBounce 2s ease-in-out infinite;
}
.scroll-indicator span {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

@keyframes scrollBounce {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.3; }
}

/* === SECTIONS === */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}
.section-alt {
  background: var(--bg-section-alt);
}

.section-header {
  margin-bottom: clamp(40px, 6vw, 64px);
}
.section-header.center { text-align: center; }

.section-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 16px auto 0;
}

/* === ABOUT === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-lead {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.92rem;
}
.about-text p em {
  color: var(--accent);
  font-style: italic;
}

.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}
.info-item {
  padding: 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-info-item);
  border: 1px solid var(--border);
}
.info-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.info-value {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

.about-card-wrap {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-card {
  border-radius: var(--radius-md);
  padding: 24px;
  transition: transform var(--transition), border-color var(--transition);
}
.about-card:hover {
  transform: translateX(4px);
  border-color: var(--accent);
}
.about-card-inner { display: flex; gap: 16px; align-items: flex-start; }
.card-icon-wrap {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}
.about-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.about-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === EDUCATION === */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.edu-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition);
}
.edu-card:hover { transform: translateY(-4px); }

.edu-year {
  padding: 14px 24px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  letter-spacing: 0.04em;
}
.edu-body {
  padding: 24px;
}
.edu-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.edu-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.3;
}
.edu-school {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 10px;
}
.edu-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}
.edu-gpa {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gold);
  padding: 6px 12px;
  background: var(--gold-dim);
  border-radius: 100px;
  display: inline-block;
}

/* === EXPERIENCE TIMELINE === */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--border), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 28px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--text-muted);
  z-index: 1;
}
.timeline-dot.active {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-content {
  border-radius: var(--radius-md);
  padding: 24px 28px;
  transition: transform var(--transition);
}
.timeline-content:hover { transform: translateX(4px); }

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.job-title {
  font-size: 1.05rem;
  font-weight: 600;
}
.job-company {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 2px;
}
.job-period {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-job-period);
  padding: 4px 12px;
  border-radius: 100px;
  white-space: nowrap;
}
.job-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.job-tags, .project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--bg-tag);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* === RESEARCH === */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.research-card {
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
  transition: transform var(--transition), border-color var(--transition);
}
.research-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}
.research-card.featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--accent-dim), var(--purple-dim));
  border-color: rgba(34, 201, 151, 0.15);
}

.research-badge {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: var(--gold-dim);
  padding: 4px 10px;
  border-radius: 100px;
  display: inline-block;
  margin-bottom: 12px;
}

.research-year {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
}
.research-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}
.research-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}
.research-role { margin-bottom: 12px; }
.role-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  display: inline-block;
}
.role-badge.leader {
  background: var(--accent-dim);
  color: var(--accent);
}
.role-badge.colead {
  background: var(--purple-dim);
  color: var(--purple);
}

/* === SKILLS === */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.skill-category {
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition);
}
.skill-category:hover { transform: translateY(-4px); }

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.skill-cat-icon { font-size: 1.4rem; }
.skill-cat-header h3 {
  font-size: 0.95rem;
  font-weight: 600;
}
.skill-list { display: flex; flex-direction: column; gap: 14px; }
.skill-item {
  display: flex;
  align-items: center;
  gap: 14px;
}
.skill-name {
  font-size: 0.82rem;
  color: var(--text-secondary);
  min-width: 140px;
  flex-shrink: 0;
}
.skill-bar {
  flex: 1;
  height: 4px;
  background: var(--skill-bar-bg);
  border-radius: 100px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 100px;
  transition: width 1.2s var(--ease-out);
}
.skill-fill.animate { width: var(--w); }

/* === PUBLICATIONS === */
.metrics-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 48px;
}
.metric-item {
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: transform var(--transition), border-color var(--transition);
}
.metric-item:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.metric-icon { font-size: 1.3rem; }
.metric-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.metric-value {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.pub-section { margin-bottom: 48px; }
.pub-section:last-child { margin-bottom: 0; }
.pub-section-title {
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.pub-section-title svg { color: var(--accent); }

.pub-list { display: flex; flex-direction: column; gap: 12px; }
.pub-item {
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  gap: 20px;
  transition: transform var(--transition), border-color var(--transition);
}
.pub-item:hover {
  transform: translateX(4px);
  border-color: var(--accent);
}
.pub-year {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 48px;
  line-height: 1.8;
}
.pub-body { flex: 1; }
.pub-index {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 6px;
}
.pub-index.scopus {
  background: var(--blue-dim);
  color: var(--blue);
}
.pub-index.book {
  background: var(--gold-dim);
  color: var(--gold);
}
.pub-item h4 {
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 4px;
}
.pub-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* IPR */
.ipr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}
.ipr-card {
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: transform var(--transition), border-color var(--transition);
}
.ipr-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.ipr-badge {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 10px;
}
.ipr-badge.patent {
  background: var(--gold-dim);
  color: var(--gold);
}
.ipr-badge.copyright {
  background: var(--purple-dim);
  color: var(--purple);
}
.ipr-card h4 {
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 8px;
}
.ipr-id {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: monospace;
  margin-bottom: 10px;
}
.ipr-status {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.ipr-status.granted { color: var(--accent); }

/* === CONTACT === */
.section-contact {
  position: relative;
  overflow: hidden;
}
.contact-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  position: relative;
  z-index: 1;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.contact-item {
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: transform var(--transition);
}
.contact-item:hover { transform: translateX(4px); }
.contact-icon { font-size: 1.2rem; }
.contact-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}
.contact-value {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent);
  transition: opacity var(--transition);
}
.contact-value:hover { opacity: 0.8; }
.contact-value.address {
  color: var(--text-secondary);
  font-size: 0.82rem;
  line-height: 1.5;
}

/* Contact Profile Card */
.contact-profile {
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
}
.contact-profile-img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 16px;
  border: 3px solid var(--accent-dim);
}
.contact-profile-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.contact-profile h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2px;
}
.contact-profile-title {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 4px;
}
.contact-profile-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.contact-excellence {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 16px;
}
.excellence-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(34, 201, 151, 0.15);
}
.contact-hobbies {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.hobby-item {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* === FOOTER === */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-text {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.heart { color: #ef4444; }
.footer-socials {
  display: flex;
  gap: 12px;
}
.social-link {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}
.social-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

[data-aos] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
[data-aos].visible {
  opacity: 1;
  transform: translateY(0);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 140px;
  }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .about-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .metrics-bar { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero-name { font-size: clamp(2.2rem, 8vw, 3rem); }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .stat-divider { height: 24px; }
  .timeline { padding-left: 24px; }
  .research-grid { grid-template-columns: 1fr; }
  .ipr-grid { grid-template-columns: 1fr; }
  .about-info-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
  .scroll-indicator { display: none; }
}

@media (max-width: 480px) {
  .hero-stats { gap: 12px; }
  .stat-num { font-size: 1.4rem; }
  .metrics-bar { grid-template-columns: 1fr; }
}