:root {
  --bg: #08111f;
  --panel: rgba(15, 23, 42, 0.72);
  --panel-strong: #0f172a;
  --text: #e5eefb;
  --muted: #9db0cc;
  --line: rgba(148, 163, 184, 0.18);
  --accent: #38bdf8;
  --accent-2: #22c55e;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.22);
  --radius: 22px;
  --container: 1160px;
}

* { 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 right, rgba(56, 189, 248, 0.18), transparent 28%),
    radial-gradient(circle at left 20%, rgba(34, 197, 94, 0.12), transparent 30%),
    linear-gradient(180deg, #050b16 0%, #08111f 100%);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(calc(100% - 32px), var(--container)); margin: 0 auto; }
.section { padding: 84px 0; }
.section-dark { background: rgba(2, 6, 23, 0.38); border-block: 1px solid var(--line); }
.section-accent { background: linear-gradient(180deg, rgba(56,189,248,.08), rgba(34,197,94,.06)); border-block: 1px solid var(--line); }
.section-label {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .78rem;
  margin: 0 0 10px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  background: rgba(5, 11, 22, 0.72);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 20px;
}
.brand { font-weight: 800; letter-spacing: .02em; }
.nav nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav nav a { color: var(--muted); }
.nav nav a:hover, .site-footer a:hover { color: var(--text); }

.hero { padding: 86px 0 56px; }
.hero-grid, .section-grid, .certs-wrap, .contact-box, .footer-inner {
  display: grid;
  gap: 28px;
}


.hero-grid { grid-template-columns: 1.25fr .75fr; align-items: center; }
.section-grid { grid-template-columns: .7fr 1.3fr; }
.eyebrow {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(56,189,248,.25);
  background: rgba(56,189,248,.10);
  color: #bfe9fb;
  font-size: .9rem;
  margin: 0 0 18px;
}
.hero h1, .section h2 {
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.hero h1 { font-size: clamp(2.4rem, 5vw, 4.7rem); max-width: 12ch; }
.section h2 { font-size: clamp(1.8rem, 3vw, 3rem); }
.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 60ch;
  margin: 22px 0 0;
}
.hero-actions, .contact-actions, .profile-meta, .hero-badges, .certs-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-actions { margin-top: 30px; }
.hero-badges {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
}
.hero-badges li, .profile-meta span, .certs-list span {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(15, 23, 42, .55);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  font-weight: 700;
  transition: transform .18s ease, opacity .18s ease, border-color .18s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: #04101c;
}
.btn-secondary {
  border-color: rgba(148,163,184,.28);
  background: rgba(255,255,255,.03);
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.profile-card {
  padding: 28px;
}
.avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(255,255,255,0.18);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}

.avatar-photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255,255,255,0.18);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
  display: block;
}

.profile-card h2 { font-size: 1.35rem; margin: 0 0 10px; }
.profile-card p { color: var(--muted); margin: 0 0 18px; }

.timeline {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}
.timeline-item { padding: 24px; }
.timeline-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 10px;
}
.timeline-top h3, .cards-grid h3 { margin: 0; font-size: 1.08rem; }
.timeline-top span { color: var(--accent); font-weight: 700; white-space: nowrap; }
.timeline-item p, .section p, .cards-grid li { color: var(--muted); }
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 28px;
}
.cards-grid .card, .contact-box { padding: 24px; }
.cards-grid ul { margin: 14px 0 0; padding-left: 18px; }
.certs-wrap { grid-template-columns: .95fr 1.05fr; align-items: center; }
.contact-box {
  grid-template-columns: 1.2fr .8fr;
  align-items: center;
}
.site-footer {
  padding: 26px 0 40px;
  border-top: 1px solid var(--line);
}
.footer-inner {
  grid-template-columns: 1fr auto;
  align-items: center;
}
.site-footer p, .site-footer a { color: var(--muted); margin: 0; }

@media (max-width: 980px) {
  .hero-grid, .section-grid, .certs-wrap, .contact-box, .cards-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 { max-width: 16ch; }
}

@media (max-width: 640px) {
  .hero { padding-top: 56px; }
  .section { padding: 68px 0; }
  .nav { min-height: 64px; }
  .nav nav { gap: 14px; font-size: .95rem; }
  .timeline-top, .footer-inner { grid-template-columns: 1fr; display: grid; }
}