:root {
  --bg: #071524;
  --bg-soft: #0f2238;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.1);
  --text: #ecf3ff;
  --text-muted: #b8c8df;
  --accent: #1dd3d8;
  --accent-2: #f6b73c;
  --line: rgba(255, 255, 255, 0.15);
  --shadow: 0 20px 55px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Sans 3", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 500px at 10% -10%, #15355f, transparent 65%),
    radial-gradient(900px 500px at 95% 10%, #102947, transparent 60%),
    var(--bg);
}

a {
  color: inherit;
}

.container {
  width: min(1100px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: #fff;
  color: #000;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  z-index: 1000;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(7, 21, 36, 0.78);
  border-bottom: 1px solid var(--line);
  z-index: 50;
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.4rem;
}

.brand {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 1.2rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
}

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

.site-nav a.is-active {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 0.3rem;
  text-decoration-thickness: 2px;
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0.3rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
}

.section {
  position: relative;
  padding: 5rem 0;
}

.panel {
  background: linear-gradient(to bottom right, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero {
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: start;
}

.kicker {
  font-family: "Space Grotesk", sans-serif;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

h1,
h2,
h3 {
  margin: 0 0 0.85rem 0;
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2rem, 3vw, 3.4rem);
  max-width: 16ch;
}

h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.3rem);
}

.lead,
.section-intro {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 62ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1.5rem 0 1.7rem;
}

.btn {
  display: inline-block;
  padding: 0.72rem 1.05rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #4de3f0);
  color: #00222a;
  box-shadow: 0 10px 24px rgba(29, 211, 216, 0.28);
}

.btn-outline {
  border: 1px solid var(--line);
  color: var(--text);
}

.btn-ghost {
  color: var(--text-muted);
}

.stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  padding: 0;
  margin: 0;
}

.stats li {
  display: grid;
  gap: 0.2rem;
}

.stats strong {
  font-size: 1.2rem;
}

.stats span {
  color: var(--text-muted);
}

.hero-card {
  padding: 1.3rem;
  border-radius: 1rem;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-card ul {
  margin: 0;
  padding-left: 1.15rem;
}

.hero-card li {
  margin-bottom: 0.55rem;
  color: var(--text-muted);
}

.card-grid,
.project-grid,
.stack-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.project-card,
.stack-grid article,
.timeline article {
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--surface);
  padding: 1rem;
}

.project-card p,
.feature-card p,
.stack-grid p,
.timeline p {
  color: var(--text-muted);
}

.project-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.8rem;
}

.chip {
  font-size: 0.78rem;
  border: 1px solid var(--line);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  color: #cde8ff;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.period {
  color: var(--accent-2);
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.contact-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.contact-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.email-fallback {
  margin: 0.5rem 0 0;
  color: var(--text-muted);
}

.email-fallback a {
  color: var(--accent);
  font-weight: 700;
}

.email-copy {
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-weight: 700;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.2rem 0;
  color: var(--text-muted);
}

.bg-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(50px);
  opacity: 0.25;
  pointer-events: none;
}

.bg-glow-a {
  width: 240px;
  height: 240px;
  right: 3rem;
  top: 4rem;
  background: var(--accent);
}

.bg-glow-b {
  width: 180px;
  height: 180px;
  left: 12rem;
  bottom: 2rem;
  background: var(--accent-2);
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

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

  .btn {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (max-width: 920px) {
  .hero-grid,
  .card-grid,
  .project-grid,
  .stack-grid {
    grid-template-columns: 1fr;
  }

  .contact-shell {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 4.4rem;
    left: 0;
    width: 100%;
    flex-direction: column;
    gap: 0;
    background: #0b1d31;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a {
    padding: 0.85rem 1.2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .site-nav.is-open {
    display: flex;
  }
}