:root {
  --bg: #0f1419;
  --surface: #1a222c;
  --border: #2a3544;
  --text: #e8eef5;
  --muted: #9fb0c3;
  --accent: #5eb3f6;
  --accent-soft: rgba(94, 179, 246, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, #1b2a3d 0%, var(--bg) 55%);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #0b1020;
  border-radius: 6px;
  z-index: 10;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(26, 34, 44, 0.95), rgba(15, 20, 25, 0.6));
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 840px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 2rem;
}

.site-header h1 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 1rem;
}

.contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.contact a {
  color: var(--accent);
  text-decoration: none;
}

.contact a:hover {
  text-decoration: underline;
}

.contact li:last-child {
  color: var(--muted);
}

main {
  max-width: 840px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
}

.card > p:first-of-type {
  margin-top: 0;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.timeline > li {
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1rem 1rem 1.25rem;
}

.timeline-meta h3 {
  margin: 0 0 0.15rem;
  font-size: 1.05rem;
}

.place,
.dates {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.dates {
  font-variant-numeric: tabular-nums;
}

.detail {
  margin: 0.35rem 0 0;
  color: var(--text);
  font-size: 0.95rem;
}

.detail:first-of-type {
  margin-top: 0.65rem;
}

.employer {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
  color: var(--text);
}

.bullets {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
  color: var(--text);
  font-size: 0.95rem;
}

.bullets li {
  margin-bottom: 0.45rem;
}

.bullets li:last-child {
  margin-bottom: 0;
}

.subheading {
  margin: 1.25rem 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

.subheading:first-of-type {
  margin-top: 0;
}

.skill-lines {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.65;
}

.cert-list {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.95rem;
}

.cert-list li {
  margin-bottom: 0.35rem;
}

.card > p {
  margin: 0.5rem 0 0;
  font-size: 0.95rem;
}

.card > p:first-of-type {
  margin-top: 0;
}

.site-footer {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 1.5rem 2.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 520px) {
  .contact {
    flex-direction: column;
    gap: 0.35rem;
  }
}