:root {
  --bg: #0a0d12;
  --bg-elev: #11151c;
  --card: #141a23;
  --card-border: #232b38;
  --text: #e7ecf3;
  --text-dim: #9aa6b5;
  --text-faint: #6b7686;
  --accent: #6ee7d8;
  --accent-2: #a78bfa;
  --accent-grad: linear-gradient(120deg, #6ee7d8, #7aa6ff 55%, #a78bfa);
  --radius: 14px;
  --maxw: 980px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Space Grotesk", "Inter", system-ui, sans-serif;
  color: #fff;
  margin: 0;
  letter-spacing: -0.01em;
}

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

ul { margin: 0; padding: 0; list-style: none; }

.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px 400px at 15% -10%, rgba(110, 231, 216, 0.12), transparent 60%),
    radial-gradient(700px 500px at 100% 10%, rgba(167, 139, 250, 0.10), transparent 60%),
    radial-gradient(500px 400px at 50% 100%, rgba(122, 166, 255, 0.07), transparent 60%);
}

/* Nav */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 13, 18, 0.72);
  border-bottom: 1px solid var(--card-border);
}

.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: #fff;
}
.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--text-dim);
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  color: var(--text) !important;
}
.nav-cta:hover { border-color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* Hero */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 110px 24px 90px;
}

.eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
  font-weight: 600;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  margin-bottom: 18px;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 0 32px;
}

.hl {
  color: var(--text);
  font-weight: 600;
  background: linear-gradient(180deg, transparent 65%, rgba(110, 231, 216, 0.25) 65%);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-grad);
  color: #07110f;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px rgba(110, 231, 216, 0.4); }

.btn-ghost {
  border-color: var(--card-border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); transform: translateY(-2px); }

.hero-links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 0.92rem;
  color: var(--text-dim);
}
.hero-links a:hover { color: var(--accent); }

/* Sections */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 70px 24px;
  border-top: 1px solid var(--card-border);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 36px;
}

.section-num {
  font-family: "Space Grotesk", monospace;
  color: var(--text-faint);
  font-size: 0.9rem;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

/* About */
.about-grid { max-width: 760px; }

.about-text {
  color: var(--text-dim);
  margin: 0 0 18px;
  font-size: 1.02rem;
}
.about-text strong { color: var(--text); font-weight: 600; }

.about-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.stat { display: flex; flex-direction: column; gap: 4px; }

.stat-num {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-faint);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 28px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(var(--card-border), transparent);
}

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

.tl-marker {
  position: absolute;
  left: -28px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}

.tl-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.tl-card:hover { border-color: #2e3848; transform: translateY(-2px); }

.tl-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.tl-top h3 { font-size: 1.08rem; }

.tl-date {
  font-size: 0.82rem;
  color: var(--text-faint);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.tl-org {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
  margin: 0 0 14px;
}
.tl-org-sub { color: var(--text-faint); font-weight: 400; }

.tl-card ul, .hack-card ul, .project-card ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.tl-card li, .hack-card li, .project-card li {
  position: relative;
  padding-left: 18px;
  color: var(--text-dim);
  font-size: 0.93rem;
}
.tl-card li::before, .hack-card li::before, .project-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-2);
}

/* Hackathon */
.hack-card {
  background: linear-gradient(160deg, rgba(110, 231, 216, 0.06), rgba(167, 139, 250, 0.04));
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 26px 28px;
}

.hack-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}
.hack-loc { color: var(--text-faint); font-weight: 400; font-size: 0.95rem; }

.hack-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.badge {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(122, 166, 255, 0.12);
  color: #a9c2ff;
  border: 1px solid rgba(122, 166, 255, 0.25);
}
.badge-gold {
  background: rgba(250, 204, 110, 0.12);
  color: #facc6e;
  border-color: rgba(250, 204, 110, 0.3);
}
.badge-muted {
  font-size: 0.78rem;
  color: var(--text-faint);
  align-self: center;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.project-card:hover { border-color: #2e3848; transform: translateY(-3px); }

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.project-top h3 { font-size: 1.05rem; }

.project-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0 0 14px;
}

.project-card ul { margin-bottom: 18px; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.tags span {
  font-size: 0.76rem;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1px solid var(--card-border);
  color: var(--text-dim);
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 26px;
}

.skill-group h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 12px;
  font-weight: 600;
}

/* Education */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.edu-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.edu-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.edu-card .tl-org { margin-bottom: 10px; }

/* Contact */
.contact-section { border-top: 1px solid var(--card-border); padding-bottom: 50px; }

.contact-card {
  text-align: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 56px 32px;
}

.contact-card h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: 12px; }

.contact-card p {
  color: var(--text-dim);
  max-width: 440px;
  margin: 0 auto 28px;
}

.contact-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  text-align: center;
  padding: 28px 24px 40px;
  color: var(--text-faint);
  font-size: 0.82rem;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--card-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav-links.open { max-height: 320px; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 14px 24px;
    width: 100%;
    border-bottom: 1px solid var(--card-border);
  }
  .nav-cta { border-radius: 0; border: none; }
  .about-stats { gap: 24px; }
}