:root {
  --bg: #08111f;
  --surface: rgba(255, 255, 255, 0.08);
  --surface-strong: rgba(255, 255, 255, 0.14);
  --text: #f6f7fb;
  --muted: #aab4c3;
  --accent: #7dd3fc;
  --accent-2: #c084fc;
  --border: rgba(255, 255, 255, 0.14);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

body.light {
  --bg: #f7f8fc;
  --surface: rgba(255, 255, 255, 0.85);
  --surface-strong: #ffffff;
  --text: #111827;
  --muted: #566070;
  --border: rgba(17, 24, 39, 0.12);
  --shadow: 0 24px 80px rgba(17, 24, 39, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(125, 211, 252, 0.28), transparent 34rem),
    radial-gradient(circle at 85% 12%, rgba(192, 132, 252, 0.22), transparent 28rem),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
.cursor-glow {
  position: fixed;
  width: 22rem;
  height: 22rem;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(125, 211, 252, 0.16), transparent 65%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 0;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 5vw, 4rem);
  backdrop-filter: blur(18px);
  background: rgba(8, 17, 31, 0.66);
  border-bottom: 1px solid var(--border);
}
body.light .site-header { background: rgba(247, 248, 252, 0.76); }
.logo {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #08111f;
  font-weight: 800;
}
.main-nav { display: flex; align-items: center; gap: 1rem; }
.main-nav a { color: var(--muted); font-weight: 600; font-size: 0.94rem; }
.main-nav a:hover { color: var(--text); }
.theme-toggle, .menu-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.55rem 0.75rem;
  cursor: pointer;
}
.menu-toggle { display: none; }
.section {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5rem 0;
}
.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  align-items: center;
  gap: 3rem;
  min-height: calc(100vh - 80px);
}
.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 800;
}
h1, h2, h3 { line-height: 1.08; margin: 0; }
h1 { font-size: clamp(2.8rem, 8vw, 5.8rem); letter-spacing: -0.07em; }
h1 span { background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; color: transparent; }
h2 { font-size: clamp(2rem, 5vw, 3.4rem); letter-spacing: -0.05em; }
.lead { color: var(--muted); font-size: clamp(1rem, 2vw, 1.25rem); max-width: 760px; }
.hero-actions, .contact-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.15rem;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid var(--border);
}
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #08111f; border: none; }
.btn.secondary { background: var(--surface); color: var(--text); }
.btn:hover, .project-card:hover, .skill-card:hover { transform: translateY(-4px); }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.hero-stats div, .profile-card, .skill-card, .project-card, .experience-panel, .cert-grid article {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 1.5rem;
}
.hero-stats div { padding: 1rem; }
.hero-stats strong { display: block; font-size: 1.35rem; }
.hero-stats span { display: block; color: var(--muted); font-size: 0.86rem; }
.profile-card { padding: 2rem; text-align: center; }
.avatar {
  width: 8rem;
  height: 8rem;
  margin: 0 auto 1.25rem;
  display: grid;
  place-items: center;
  border-radius: 2rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #08111f;
  font-size: 2.4rem;
  font-weight: 900;
}
.profile-card p { color: var(--muted); }
.card-tags, .stack { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; }
.card-tags span, .stack span {
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}
.split { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 3rem; align-items: start; }
.split > p { color: var(--muted); font-size: 1.1rem; margin: 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; }
.skill-filters { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.5rem; }
.filter {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  padding: 0.7rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
}
.filter.active { color: #08111f; background: var(--accent); }
.skill-grid, .project-grid, .cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.skill-card, .project-card, .cert-grid article { padding: 1.25rem; transition: 0.25s ease; }
.skill-card p, .project-card p, .cert-grid span, .contact p { color: var(--muted); }
.project-grid { grid-template-columns: repeat(3, 1fr); }
.project-card { min-height: 20rem; display: flex; flex-direction: column; }
.project-icon { font-size: 2.2rem; margin-bottom: 1rem; }
.project-card .stack { justify-content: flex-start; margin-top: auto; }
.timeline { display: grid; gap: 0.8rem; margin-bottom: 1.5rem; }
.timeline-item {
  text-align: left;
  padding: 1rem;
  border-radius: 1.1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.timeline-item span { display: block; color: var(--accent); font-weight: 800; font-size: 0.85rem; }
.timeline-item.active { outline: 2px solid var(--accent); background: var(--surface-strong); }
.experience-panel { padding: 1.5rem; }
.experience-panel p { color: var(--muted); }
.certifications { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 2rem; }
.cert-grid { grid-template-columns: repeat(2, 1fr); }
.cert-grid strong, .cert-grid span { display: block; }
.contact { text-align: center; padding: 5rem 2rem; background: var(--surface); border: 1px solid var(--border); border-radius: 2rem; margin-bottom: 4rem; }
.contact-actions { justify-content: center; }
footer { position: relative; z-index: 1; text-align: center; color: var(--muted); padding: 2rem; border-top: 1px solid var(--border); }
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (max-width: 860px) {
  .menu-toggle { display: inline-flex; }
  .main-nav { position: fixed; inset: 4.8rem 1rem auto 1rem; display: none; flex-direction: column; align-items: stretch; padding: 1rem; border-radius: 1.2rem; background: var(--surface-strong); border: 1px solid var(--border); }
  .main-nav.open { display: flex; }
  .hero, .split, .certifications { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 3rem; }
  .hero-stats, .skill-grid, .project-grid, .cert-grid { grid-template-columns: 1fr; }
}