:root {
  --bg: #050810;
  --surface: #0c1020;
  --surface2: #121828;
  --accent: #4f8ef7;
  --accent2: #7c3aed;
  --gold: #f5c842;
  --text: #e8eaf0;
  --muted: #7a82a0;
  --border: rgba(255,255,255,0.07);
  --glow: rgba(79,142,247,0.15);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  cursor: none;
}

/* Custom Cursor */
.cursor {
  position: fixed;
  width: 12px; height: 12px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%,-50%);
  transition: transform 0.1s ease, width 0.3s, height 0.3s, opacity 0.3s;
  mix-blend-mode: screen;
}
.cursor-ring {
  position: fixed;
  width: 36px; height: 36px;
  border: 1.5px solid rgba(79,142,247,0.5);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%,-50%);
  transition: transform 0.15s ease, width 0.3s, height 0.3s;
}

/* Scroll Progress */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  z-index: 1000;
  transition: width 0.1s;
}

/* Navbar */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  padding: 1.2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(5,8,16,0.7);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s;
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.3s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  padding: 0.5rem 1.2rem;
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  border-radius: 4px;
  transition: all 0.3s !important;
}
.nav-cta:hover { background: var(--accent); color: #fff !important; }
.nav-cta::after { display: none !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { display: block; width: 24px; height: 1.5px; background: var(--text); transition: all 0.3s; }

/* Hero */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 0 2rem;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(79,142,247,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(124,58,237,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 60% 80%, rgba(245,200,66,0.04) 0%, transparent 50%);
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  width: 100%;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  background: rgba(255,255,255,0.02);
  opacity: 0;
  animation: fadeUp 0.8s ease 0.2s forwards;
}
.hero-eyebrow span { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.5)} }
.hero-name {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.4s forwards;
}
.hero-name span { 
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-title {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--muted);
  font-weight: 300;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.6s forwards;
}
.typing-text {
  color: var(--gold);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
}
.hero-desc {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.8s forwards;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s ease 1s forwards;
}
.btn-primary {
  padding: 0.85rem 2rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 40px rgba(79,142,247,0.3); }
.btn-outline {
  padding: 0.85rem 2rem;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.3s;
  background: rgba(255,255,255,0.02);
  cursor: pointer;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  animation: bounce 2s infinite;
}
.hero-scroll::before {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--accent));
}
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(-8px)} }
.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 3rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 1.2s forwards;
}
.stat-item { border-left: 2px solid var(--border); padding-left: 1rem; }
.stat-num {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}
.stat-label { font-size: 0.75rem; color: var(--muted); letter-spacing: 0.05em; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Sections */
section { padding: 6rem 0; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}
.section-label::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}
.section-sub { color: var(--muted); font-size: 1.05rem; line-height: 1.7; max-width: 560px; }

/* About */
#about { background: var(--surface); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  margin-top: 4rem;
}
.about-avatar-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}
.about-avatar {
  width: 320px;
  height: 380px;
  background: linear-gradient(135deg, var(--surface2), var(--bg));
  border-radius: 12px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Playfair Display', serif;
  font-size: 7rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  overflow: hidden;
}
.about-avatar::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(79,142,247,0.05), rgba(124,58,237,0.05));
}
.about-corner {
  position: absolute;
  width: 60px; height: 60px;
  border: 2px solid var(--accent);
  opacity: 0.3;
}
.about-corner.tl { top: -10px; left: -10px; border-right: none; border-bottom: none; }
.about-corner.br { bottom: -10px; right: -10px; border-left: none; border-top: none; }
.about-text h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  margin-bottom: 1rem;
}
.about-text p { color: var(--muted); line-height: 1.85; margin-bottom: 1rem; }
.about-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.chip {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--muted);
  background: rgba(255,255,255,0.02);
  transition: all 0.3s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

/* Education */
.edu-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 4rem; }
.edu-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}
.edu-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0);
  transition: transform 0.3s;
}
.edu-card:hover::before { transform: scaleX(1); }
.edu-card:hover { transform: translateY(-4px); border-color: rgba(79,142,247,0.3); }
.edu-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(79,142,247,0.15), rgba(124,58,237,0.15));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
}
.edu-degree { font-weight: 600; font-size: 1rem; margin-bottom: 0.3rem; }
.edu-school { color: var(--accent); font-size: 0.85rem; margin-bottom: 0.3rem; }
.edu-period { color: var(--muted); font-size: 0.8rem; font-family: 'JetBrains Mono', monospace; }
.edu-badge {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  background: rgba(245,200,66,0.1);
  border: 1px solid rgba(245,200,66,0.3);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--gold);
  margin-top: 0.8rem;
}

/* Experience */
#experience { background: var(--surface); }
.exp-grid { margin-top: 4rem; display: grid; gap: 1.5rem; }
.exp-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.exp-card:hover { border-color: rgba(79,142,247,0.3); transform: translateX(4px); }
.exp-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--accent);
  padding-top: 0.2rem;
  letter-spacing: 0.05em;
}
.exp-title { font-weight: 600; font-size: 1rem; margin-bottom: 0.3rem; }
.exp-org { color: var(--muted); font-size: 0.85rem; margin-bottom: 0.8rem; }
.exp-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag {
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  font-size: 0.72rem;
  background: rgba(79,142,247,0.08);
  border: 1px solid rgba(79,142,247,0.2);
  color: var(--accent);
}

/* Skills */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; margin-top: 4rem; }
.skill-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.skill-card:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-4px); }
.skill-icon { font-size: 1.8rem; margin-bottom: 0.8rem; }
.skill-name { font-weight: 500; font-size: 0.9rem; margin-bottom: 0.8rem; }
.skill-bar-wrap { height: 3px; background: var(--border); border-radius: 2px; overflow: hidden; }
.skill-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 2px;
  width: 0;
  transition: width 1.5s cubic-bezier(0.4,0,0.2,1);
}
.skill-pct { font-size: 0.72rem; color: var(--muted); font-family: 'JetBrains Mono', monospace; margin-top: 0.4rem; }

/* Achievements */
#achievements { background: var(--surface); }
.ach-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 4rem; }
.ach-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
  cursor: default;
}
.ach-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--x,50%) var(--y,50%), rgba(79,142,247,0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}
.ach-card:hover::after { opacity: 1; }
.ach-card:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.ach-emoji { font-size: 2.2rem; margin-bottom: 1rem; }
.ach-title { font-weight: 600; font-size: 0.95rem; margin-bottom: 0.5rem; line-height: 1.4; }
.ach-desc { color: var(--muted); font-size: 0.83rem; line-height: 1.7; }
.ach-year {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  opacity: 0.5;
}

/* Leadership */
.leadership-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 4rem; }
.leader-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.leader-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(to bottom, var(--accent), var(--accent2));
  border-radius: 2px 0 0 2px;
}
.leader-card:hover { transform: translateY(-4px); border-color: rgba(79,142,247,0.3); }
.leader-role { font-weight: 600; font-size: 1rem; margin-bottom: 0.3rem; }
.leader-org { color: var(--accent); font-size: 0.85rem; margin-bottom: 0.8rem; }
.leader-desc { color: var(--muted); font-size: 0.85rem; line-height: 1.7; }

/* Volunteer */
#volunteer { background: var(--surface); }
.vol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 4rem; }
.vol-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  transition: all 0.3s;
  text-align: center;
}
.vol-card:hover { transform: translateY(-6px); border-color: rgba(79,142,247,0.3); }
.vol-logo {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, rgba(79,142,247,0.1), rgba(124,58,237,0.1));
  border: 1px solid var(--border);
}
.vol-org { font-weight: 600; font-size: 0.95rem; margin-bottom: 0.5rem; }
.vol-desc { color: var(--muted); font-size: 0.83rem; line-height: 1.7; }

/* Contact */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
  margin-top: 4rem;
}
.contact-info h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}
.contact-info p { color: var(--muted); line-height: 1.8; margin-bottom: 2rem; }
.social-links { display: flex; flex-direction: column; gap: 0.8rem; }
.social-link {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.3s;
  padding: 0.6rem;
  border-radius: 8px;
  border: 1px solid transparent;
}
.social-link:hover { color: var(--accent); border-color: var(--border); background: rgba(79,142,247,0.05); }
.social-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: all 0.3s;
}
.social-link:hover .social-icon { border-color: var(--accent); background: rgba(79,142,247,0.1); }
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-label { font-size: 0.8rem; color: var(--muted); letter-spacing: 0.05em; text-transform: uppercase; }
.form-input, .form-textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  transition: all 0.3s;
  outline: none;
}
.form-input:focus, .form-textarea:focus { border-color: var(--accent); background: rgba(79,142,247,0.03); }
.form-textarea { height: 120px; resize: vertical; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--muted); }

/* Publications */
.pub-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin-top: 4rem; }
.pub-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.pub-card:hover { transform: translateY(-4px); border-color: rgba(79,142,247,0.3); }
.pub-icon { font-size: 1.5rem; }
.pub-title { font-weight: 500; font-size: 0.9rem; }
.pub-url { font-size: 0.78rem; color: var(--accent); font-family: 'JetBrains Mono', monospace; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.83rem;
}
footer a { color: var(--accent); text-decoration: none; }

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(0.4,0,0.2,1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Particles */
#particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.particle {
  position: absolute;
  width: 2px; height: 2px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.3;
  animation: float linear infinite;
}
@keyframes float {
  from { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 0.3; }
  90% { opacity: 0.3; }
  to { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* Mobile Nav */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(5,8,16,0.98);
  z-index: 890;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  backdrop-filter: blur(20px);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1.5rem;
  color: var(--text);
  text-decoration: none;
  font-family: 'Playfair Display', serif;
  transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-avatar { width: 200px; height: 240px; font-size: 5rem; margin: 0 auto; }
  .edu-cards { grid-template-columns: 1fr; }
  .exp-card { grid-template-columns: 1fr; gap: 0.5rem; }
  .leadership-grid { grid-template-columns: 1fr; }
  .vol-grid { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; gap: 3rem; }
  .pub-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: 1.5rem; }
  nav { padding: 1rem 1.5rem; }
}
@media (max-width: 600px) {
  .pub-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
}