:root {
  --bg: #0b0e14;
  --bg-elev: #11151f;
  --card: #141924;
  --border: rgba(255,255,255,0.08);
  --text: #e9edf5;
  --text-dim: #9aa4b8;
  --accent: #4fd1c5;
  --accent-2: #7c9eff;
  --radius: 14px;
  --maxw: 1120px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fb;
    --bg-elev: #ffffff;
    --card: #ffffff;
    --border: rgba(15,23,42,0.08);
    --text: #10131a;
    --text-dim: #565f75;
    --accent: #0f9d8f;
    --accent-2: #3958d9;
  }
}
:root[data-theme="light"] {
  --bg: #f7f8fb; --bg-elev: #ffffff; --card: #ffffff; --border: rgba(15,23,42,0.08);
  --text: #10131a; --text-dim: #565f75; --accent: #0f9d8f; --accent-2: #3958d9;
}
:root[data-theme="dark"] {
  --bg: #0b0e14; --bg-elev: #11151f; --card: #141924; --border: rgba(255,255,255,0.08);
  --text: #e9edf5; --text-dim: #9aa4b8; --accent: #4fd1c5; --accent-2: #7c9eff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(79,209,197,0.10), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(124,158,255,0.10), transparent 40%);
}

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

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
}
.brand { font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em; }
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--text-dim); font-size: 0.92rem; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.cta {
  border: 1px solid var(--border); padding: 8px 16px; border-radius: 999px;
  font-size: 0.88rem; transition: border-color .15s, color .15s;
}
.cta:hover { border-color: var(--accent); color: var(--accent); }
.nav-toggle { display: none; }

/* Hero */
.hero {
  position: relative; z-index: 1;
  max-width: var(--maxw); margin: 0 auto;
  padding: 88px 24px 40px;
  display: grid; gap: 40px;
}
.hero-inner { max-width: 700px; }
.eyebrow {
  color: var(--accent); font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem); margin: 0 0 20px; letter-spacing: -0.03em; line-height: 1.05;
}
.hero-sub { color: var(--text-dim); font-size: 1.08rem; max-width: 60ch; margin: 0 0 24px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.hero-tags span {
  border: 1px solid var(--border); padding: 6px 12px; border-radius: 999px;
  font-size: 0.8rem; color: var(--text-dim);
}
.hero-actions { display: flex; gap: 14px; }
.btn { padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 0.94rem; transition: transform .15s, opacity .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #06110f; }
.btn-primary:hover { opacity: 0.9; }
.btn-ghost { border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.stat { background: var(--bg-elev); padding: 24px 20px; }
.stat-num { display: block; font-size: 1.7rem; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; }
.stat-label { display: block; color: var(--text-dim); font-size: 0.82rem; margin-top: 6px; }

/* Sections */
.section { position: relative; z-index: 1; max-width: var(--maxw); margin: 0 auto; padding: 96px 24px; }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-kicker { color: var(--accent); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin: 0 0 12px; }
.section h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); letter-spacing: -0.02em; margin: 0; }
.section-sub { color: var(--text-dim); margin-top: 14px; }

/* About */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; }
.about-text { color: var(--text-dim); font-size: 1.05rem; margin: 0; }
.about-facts { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.about-facts li { border-left: 2px solid var(--accent); padding-left: 14px; font-size: 0.95rem; color: var(--text-dim); }
.about-facts strong { color: var(--text); display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 2px; }

/* Timeline */
.timeline { display: grid; gap: 32px; }
.job {
  display: grid; grid-template-columns: 200px 1fr; gap: 32px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px;
}
.job-meta { display: flex; flex-direction: column; gap: 6px; }
.job-date { font-weight: 700; font-size: 0.95rem; }
.job-location { color: var(--text-dim); font-size: 0.85rem; }
.job-body h3 { margin: 0 0 6px; font-size: 1.25rem; letter-spacing: -0.01em; }
.job-body h3 span { color: var(--text-dim); font-weight: 500; font-size: 1rem; }
.job-role { color: var(--accent); font-weight: 600; font-size: 0.9rem; margin: 0 0 12px; }
.job-desc { color: var(--text-dim); margin: 0 0 16px; }
.job-points { margin: 0 0 20px; padding-left: 20px; display: grid; gap: 10px; color: var(--text-dim); font-size: 0.95rem; }
.job-points strong { color: var(--text); }
.job-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.job-tags span { background: var(--bg-elev); border: 1px solid var(--border); padding: 5px 11px; border-radius: 999px; font-size: 0.78rem; color: var(--text-dim); }

/* Videos */
.videos-featured {
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 15% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 55%),
    var(--bg-elev);
  padding: 56px 40px;
  margin-top: 12px;
}
.videos-featured .section-kicker { color: var(--accent); }
.video-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.video-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.video-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px -12px color-mix(in srgb, var(--accent) 45%, transparent);
}
.video-card video { width: 100%; aspect-ratio: 16 / 9; background: #000; display: block; }
.video-card h3 { margin: 16px 20px 6px; font-size: 1.02rem; letter-spacing: -0.01em; }
.video-card p { margin: 0 20px 20px; color: var(--text-dim); font-size: 0.88rem; }

/* Projects / cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; }
.card-tag { color: var(--accent-2); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 12px; }
.card h3 { margin: 0 0 12px; font-size: 1.15rem; }
.card p { color: var(--text-dim); font-size: 0.93rem; margin: 0 0 18px; flex-grow: 1; }
.card-meta { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; border-top: 1px solid var(--border); padding-top: 16px; }
.card-meta li { font-size: 0.82rem; color: var(--text-dim); padding-left: 16px; position: relative; }
.card-meta li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }
.card-link {
  display: inline-block; margin-top: 18px; font-weight: 600; font-size: 0.88rem; color: var(--accent);
  transition: opacity .15s;
}
.card-link:hover { opacity: 0.75; }

/* Skills */
.skills-grid { display: grid; gap: 28px; }
.skill-group h4 { margin: 0 0 12px; font-size: 0.95rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; font-weight: 700; }
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill-row span { background: var(--card); border: 1px solid var(--border); padding: 8px 14px; border-radius: 999px; font-size: 0.86rem; }

/* Certs */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.cert { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 6px; }
.cert strong { font-size: 1.2rem; color: var(--accent); }
.cert span { color: var(--text); font-size: 0.9rem; }
.cert time { color: var(--text-dim); font-size: 0.8rem; }

/* Contact */
.contact { text-align: center; }
.contact-inner { max-width: 560px; margin: 0 auto; }
.contact-sub { color: var(--text-dim); margin: 14px 0 32px; }
.contact-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.contact-links a {
  border: 1px solid var(--border); padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 0.92rem;
  transition: border-color .15s, color .15s;
}
.contact-links a:hover { border-color: var(--accent); color: var(--accent); }

.footer { text-align: center; padding: 32px 24px; color: var(--text-dim); font-size: 0.82rem; border-top: 1px solid var(--border); }

/* Responsive */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .job { grid-template-columns: 1fr; }
  .videos-featured { padding: 40px 20px; }
}
@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr; }
}