:root {
  --bg: #0c1017;
  --bg-elevated: #121826;
  --text: #e8ecf4;
  --muted: #9aa4b5;
  --accent: #6ee7c5;
  --accent-dim: rgba(110, 231, 197, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --font-sans: "Source Sans 3", system-ui, -apple-system, Segoe UI, sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --max: 72ch;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text);
  background: radial-gradient(
      1200px 600px at 10% -10%,
      rgba(110, 231, 197, 0.08),
      transparent 55%
    ),
    radial-gradient(
      900px 500px at 90% 0%,
      rgba(99, 102, 241, 0.12),
      transparent 50%
    ),
    var(--bg);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.75rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #0c1017;
  font-weight: 600;
  border-radius: 6px;
  z-index: 100;
}

.skip-link:focus {
  left: 0.75rem;
}

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(12, 16, 23, 0.72);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 0.85rem;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent), #5ac4f2);
}

.nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--text);
}

.hero {
  padding: 4.5rem 0 3.5rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.hero-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0 0 1.75rem;
  max-width: 52ch;
  color: var(--muted);
  font-size: 1.125rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #06221a;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  filter: brightness(1.05);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
}

.section {
  padding: 3rem 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(18, 24, 38, 0.6), rgba(18, 24, 38, 0.95));
  border-block: 1px solid var(--border);
}

.section h2 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 600;
}

.prose p {
  margin: 0;
  color: var(--muted);
  max-width: 60ch;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.timeline-item {
  padding: 1.35rem 1.5rem;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: baseline;
  margin-bottom: 0.65rem;
}

.timeline-org {
  font-weight: 600;
  font-size: 1.1rem;
}

.timeline-role {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
}

.timeline-desc {
  margin: 0;
  color: var(--muted);
}

.project-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .project-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.project-card {
  padding: 1.35rem 1.35rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(18, 24, 38, 0.55);
}

.project-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-family: var(--font-display);
}

.project-card p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.text-link {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.text-link[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

.text-link:not([aria-disabled="true"]):hover,
.text-link:not([aria-disabled="true"]):focus-visible {
  text-decoration: underline;
}

.contact {
  padding-bottom: 1rem;
}

.contact-lead {
  margin: 0 0 1rem;
  color: var(--muted);
  max-width: 50ch;
}

.contact-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
}

.contact-links a {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--accent-dim);
  padding-bottom: 2px;
}

.contact-links a:hover,
.contact-links a:focus-visible {
  border-bottom-color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2.5rem;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}