:root {
  --bg: #0f1419;
  --bg-elevated: #1a222d;
  --bg-card: #232d3b;
  --text: #e8edf4;
  --text-muted: #94a3b8;
  --accent: #3d9eff;
  --accent-soft: rgba(61, 158, 255, 0.12);
  --border: rgba(148, 163, 184, 0.15);
  --serif: "Instrument Serif", Georgia, serif;
  --name: "Syne", system-ui, sans-serif;
  --sans: "Plus Jakarta Sans", system-ui, sans-serif;
  --max-width: 720px;
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(61, 158, 255, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(99, 102, 241, 0.08), transparent);
  min-height: 100vh;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: var(--radius);
  z-index: 100;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* Hero */
.hero {
  padding: 2.5rem 1.5rem 3rem;
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-bottom: 3rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--accent);
}

.hero-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem;
  animation: fadeUp 0.7s ease-out;
}

.profile-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--border);
  box-shadow:
    0 0 0 1px rgba(61, 158, 255, 0.2),
    0 12px 40px rgba(0, 0, 0, 0.35);
}

.hero-text {
  flex: 1;
  min-width: min(100%, 280px);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-family: var(--name);
  font-size: clamp(2.75rem, 8vw, 4rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.tagline {
  margin: 1rem 0 0.75rem;
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 36ch;
}

.location {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 1.75rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.contact-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.125rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.contact-pill:hover {
  background: var(--accent-soft);
  border-color: rgba(61, 158, 255, 0.35);
  transform: translateY(-1px);
}

.contact-pill svg {
  opacity: 0.85;
}

/* Main sections */
main {
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  margin: 0 0 1.25rem;
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.section-meta {
  margin: -0.75rem 0 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.prose p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.prose p:last-child {
  margin-bottom: 0;
}

/* Timeline */
.timeline-item {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  width: 10px;
  height: 10px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 2px var(--border);
}

.timeline-item.featured .timeline-marker {
  background: var(--accent);
  box-shadow: 0 0 0 2px var(--accent), 0 0 12px rgba(61, 158, 255, 0.4);
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.timeline-header h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
}

.timeline-date {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.role-title {
  margin: 0;
  font-weight: 600;
  color: var(--text);
}

.role-meta {
  margin: 0.15rem 0 0.75rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.timeline-body ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--text-muted);
}

.timeline-body li {
  margin-bottom: 0.4rem;
}

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

.role-details {
  margin-top: 1rem;
}

.role-details summary {
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  list-style: none;
  user-select: none;
}

.role-details summary::-webkit-details-marker {
  display: none;
}

.role-details summary::after {
  content: " ↓";
  font-size: 0.75em;
}

.role-details[open] summary::after {
  content: " ↑";
}

.nested-roles {
  margin-top: 1rem;
  padding: 1.25rem;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.nested-role {
  margin-bottom: 1.25rem;
}

.nested-role:last-child {
  margin-bottom: 0;
}

.nested-role h4 {
  margin: 0 0 0.15rem;
  font-size: 0.9375rem;
  font-weight: 600;
}

.nested-role > span {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.nested-role ul {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* Certifications */
.cert-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.cert-grid li {
  display: grid;
  gap: 0.15rem;
  padding: 1rem 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.cert-grid li:hover {
  border-color: rgba(61, 158, 255, 0.25);
}

.cert-issuer {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.cert-name {
  font-weight: 600;
  font-size: 0.9375rem;
}

.cert-date {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Skills */
.skill-groups {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.skill-groups li {
  padding: 1.25rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.skill-groups h3 {
  margin: 0 0 0.35rem;
  font-size: 0.9375rem;
  font-weight: 700;
}

.skill-groups p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* Footer */
.footer {
  max-width: calc(var(--max-width) + 3rem);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer p {
  margin: 0.25rem 0;
}

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

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

/* Print */
@media print {
  body {
    background: #fff;
    color: #111;
  }

  .nav,
  .skip-link {
    display: none;
  }

  .hero {
    padding-top: 0;
  }

  .profile-photo {
    box-shadow: none;
    border-color: #ccc;
  }

  .contact-pill {
    border: 1px solid #ccc;
    color: #111;
  }

  .section {
    break-inside: avoid;
  }

  .role-details summary {
    display: none;
  }

  .nested-roles {
    display: block !important;
    background: transparent;
    border: none;
    padding: 0;
  }
}

@media (min-width: 640px) {
  .cert-grid {
    grid-template-columns: 1fr 1fr;
  }

  .skill-groups {
    grid-template-columns: 1fr 1fr;
  }
}