:root {
  --bg: #0b0f19;
  --bg-2: #111827;
  --card: rgba(255, 255, 255, 0.04);
  --card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --text: #e6e9ef;
  --muted: #9aa4b2;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --grad: linear-gradient(120deg, var(--accent), var(--accent-2));
  --radius: 16px;
  --shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.6);
}
:root[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-2: #ffffff;
  --card: rgba(255, 255, 255, 0.85);
  --card-hover: #ffffff;
  --border: rgba(15, 23, 42, 0.09);
  --text: #0f172a;
  --muted: #5b6474;
  --shadow: 0 10px 30px -14px rgba(15, 23, 42, 0.25);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.mono { font-family: "JetBrains Mono", ui-monospace, monospace; }
.muted { color: var(--muted); }

/* Background decoration */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at top, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at top, #000 20%, transparent 70%);
}
.bg-glow {
  position: fixed; z-index: -1; pointer-events: none;
  width: 700px; height: 700px; top: -250px; right: -200px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.28), transparent 65%);
  filter: blur(20px);
}

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 24px;
  padding: 14px clamp(16px, 5vw, 64px);
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.brand-mark {
  font-family: "JetBrains Mono", monospace; font-size: 0.85rem;
  padding: 2px 8px; border-radius: 8px; background: var(--grad); color: #fff;
}
.nav nav { display: flex; gap: 22px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.nav nav a { color: var(--muted); font-size: 0.92rem; font-weight: 500; white-space: nowrap; transition: color 0.2s; }
.nav nav a:hover, .nav nav a.active { color: var(--text); }
.theme-toggle {
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  width: 36px; height: 36px; border-radius: 10px; cursor: pointer; font-size: 1rem; flex-shrink: 0;
}

/* Layout */
main { max-width: 1120px; margin: 0 auto; padding: 0 clamp(16px, 5vw, 32px); counter-reset: section; }
.section { padding: 72px 0; }
.section h2 {
  counter-increment: section;
  display: flex; align-items: center; gap: 14px;
  font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 32px; letter-spacing: -0.02em;
}
.section h2::before {
  content: counter(section, decimal-leading-zero) ".";
  font-family: "JetBrains Mono", monospace; font-size: 1rem; color: var(--accent-2);
}
.section h2::after { content: ""; flex: 1; height: 1px; background: var(--border); max-width: 320px; }
h3.sub { margin: 48px 0 20px; font-size: 1.15rem; color: var(--muted); font-weight: 600; }

/* Hero */
.hero {
  min-height: calc(100vh - 66px);
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center;
  padding: 48px 0;
}
.eyebrow { color: var(--accent-2); margin: 0 0 8px; }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.6rem); line-height: 1.05; margin: 0; letter-spacing: -0.04em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.headline { font-size: clamp(1.15rem, 2.4vw, 1.6rem); font-weight: 600; margin: 12px 0 8px; }
.typing { color: var(--muted); min-height: 1.7em; font-size: 1rem; }
.prompt { color: var(--accent); }
.caret { display: inline-block; width: 9px; height: 1.1em; vertical-align: -3px; background: var(--accent-2); margin-left: 2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.btn {
  display: inline-flex; align-items: center; padding: 12px 22px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--card); font-weight: 600; font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-2px); background: var(--card-hover); }
.btn.primary { background: var(--grad); color: #fff; border: 0; box-shadow: 0 8px 28px -8px rgba(124, 92, 255, 0.7); }

.socials { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.socials a {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
  transition: color 0.2s, transform 0.2s, border-color 0.2s;
}
.socials a:hover { color: var(--text); transform: translateY(-3px); border-color: var(--accent); }
.socials svg, .project-top svg { width: 20px; height: 20px; }

.hero-card {
  justify-self: center; text-align: center; padding: 32px;
  border-radius: 24px; border: 1px solid var(--border); background: var(--card);
  box-shadow: var(--shadow); backdrop-filter: blur(10px);
}
.avatar-ring {
  width: 220px; height: 220px; margin: 0 auto 24px; padding: 5px; border-radius: 50%;
  background: var(--grad); animation: float 6s ease-in-out infinite;
}
.avatar-ring img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 5px solid var(--bg-2); display: block; }
@keyframes float { 50% { transform: translateY(-10px); } }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stat strong { display: block; font-size: 1.6rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { font-size: 0.78rem; color: var(--muted); }

/* Cards */
.card {
  display: block; border: 1px solid var(--border); background: var(--card);
  border-radius: var(--radius); padding: 22px;
  transition: transform 0.25s, border-color 0.25s, background 0.25s, box-shadow 0.25s;
}
a.card:hover, .card.award:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 60%, transparent); background: var(--card-hover); box-shadow: var(--shadow); }
.card h3 { margin: 0 0 6px; font-size: 1.02rem; line-height: 1.35; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

.about-grid { display: grid; grid-template-columns: 1.7fr 1fr; gap: 32px; align-items: start; }
.about { font-size: 1.05rem; }
.about p { margin: 0 0 12px; color: var(--muted); }
.about .lead { color: var(--text); font-size: 1.15rem; }
.focus { list-style: none; padding: 0; margin: 20px 0 24px; display: grid; gap: 10px; }
.focus li { position: relative; padding-left: 26px; color: var(--muted); }
.focus li::before { content: "▹"; position: absolute; left: 0; color: var(--accent-2); }
.about-side { display: grid; gap: 16px; }
.about-side h3 { margin-bottom: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: "JetBrains Mono", monospace; font-size: 0.8rem; padding: 5px 12px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}
.chip.alt { font-family: inherit; border-color: var(--border); background: var(--card-hover); }

.skills { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.skill h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-2); margin-bottom: 14px; }
.skill img { height: 44px; width: auto; }

.badges { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.badge { display: flex; gap: 16px; align-items: flex-start; }
.badge-icon { width: 72px; height: 72px; flex-shrink: 0; object-fit: contain; filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.35)); }
.badge-icon.placeholder { display: grid; place-items: center; font-size: 2rem; border-radius: 14px; background: var(--card-hover); }
.featured-badges .badge { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.issuer { font-size: 0.8rem !important; color: var(--accent-2) !important; margin-bottom: 6px !important; font-weight: 600; }
.more { margin-top: 20px; }
.more a { color: var(--accent-2); font-weight: 600; }
.learning { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 8px; }
.learning li { display: flex; justify-content: space-between; gap: 16px; padding: 12px 16px; border: 1px solid var(--border); border-radius: 12px; background: var(--card); }

.timeline { display: grid; gap: 16px; }
.award { display: flex; gap: 16px; align-items: flex-start; }
.award-icon { font-size: 1.8rem; width: 56px; height: 56px; display: grid; place-items: center; border-radius: 14px; background: var(--card-hover); flex-shrink: 0; }

.featured { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.feature img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 10px; margin-bottom: 14px; }

.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.project { display: flex; flex-direction: column; min-height: 200px; }
.project-top { display: flex; justify-content: space-between; color: var(--accent-2); margin-bottom: 18px; }
.project-top svg:first-child { width: 34px; height: 34px; }
.project .desc { flex: 1; }
.project .meta { margin-top: 14px !important; font-size: 0.78rem !important; }
.gh-stats { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin-top: 32px; }
.gh-stats img { height: 170px; width: auto; }

.contact { text-align: center; max-width: 620px; margin: 0 auto; }
.contact h2 { justify-content: center; }
.contact h2::after { display: none; }
.contact p { color: var(--muted); font-size: 1.08rem; margin-bottom: 28px; }

.footer {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px;
  padding: 28px clamp(16px, 5vw, 64px); border-top: 1px solid var(--border);
  color: var(--muted); font-size: 0.8rem;
}

/* Reveal on scroll (only when JS is running) */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.visible { opacity: 1; transform: none; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; min-height: auto; text-align: left; }
  .hero-card { justify-self: stretch; }
  .about-grid { grid-template-columns: 1fr; }
  .nav nav { display: none; }
  .theme-toggle { margin-left: auto; }
  .skills, .badges { grid-template-columns: 1fr; }
  .skill img { height: auto; }
  .gh-stats img { height: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, .js .reveal { animation: none !important; transition: none !important; opacity: 1 !important; transform: none !important; }
}