@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Work+Sans:wght@300;400;500;600&display=swap");

:root {
  color-scheme: light dark;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Work Sans", system-ui, sans-serif;
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-strong: 0 28px 80px rgba(0, 0, 0, 0.25);
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.12);
  --transition: 220ms ease;
  --section-gap: 120px;
}

body[data-theme="dark"] {
  --bg: #0e1116;
  --bg-soft: #141b23;
  --text: #f6f7fb;
  --muted: #a7b1c2;
  --accent: #7df9ff;
  --accent-2: #8b5cf6;
  --card: rgba(20, 27, 35, 0.8);
  --stroke: rgba(255, 255, 255, 0.08);
}

body[data-theme="light"] {
  --bg: #f7f4f0;
  --bg-soft: #fff8f1;
  --text: #15151b;
  --muted: #5a5f6a;
  --accent: #1c7c85;
  --accent-2: #a855f7;
  --card: rgba(255, 255, 255, 0.8);
  --stroke: rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.bg-glow {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 10%, rgba(125, 249, 255, 0.18), transparent 40%),
    radial-gradient(circle at 90% 20%, rgba(139, 92, 246, 0.15), transparent 45%),
    radial-gradient(circle at 20% 80%, rgba(125, 249, 255, 0.12), transparent 50%);
  pointer-events: none;
  z-index: 0;
  animation: glow-drift 18s ease-in-out infinite alternate;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.14;
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: 0;
  animation: grid-shift 24s linear infinite;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 10vw;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--stroke);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  gap: 20px;
  font-size: 0.95rem;
  color: var(--muted);
}

.nav a {
  position: relative;
  padding-bottom: 6px;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav a:hover::after,
.nav a:focus::after {
  transform: scaleX(1);
}

.nav a.is-active {
  color: var(--text);
}

.nav a.is-active::after {
  transform: scaleX(1);
}

.theme-toggle {
  border: 1px solid var(--stroke);
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  cursor: pointer;
  transition: border var(--transition), background var(--transition), color var(--transition);
}

.toggle-track {
  width: 36px;
  height: 18px;
  background: color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 999px;
  position: relative;
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 999px;
  transition: transform var(--transition);
}

body[data-theme="light"] .toggle-thumb {
  transform: translateX(18px);
}

.toggle-text {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

main {
  position: relative;
  z-index: 1;
  padding: 60px 10vw 120px;
}

.page {
  display: none;
}

.page.is-active {
  display: block;
  animation: page-in 520ms ease;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 60px;
  align-items: center;
  padding: 90px 0 60px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 4vw, 4rem);
  margin: 10px 0 18px;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
}

.eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 28px 0 22px;
}

.btn {
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  font-weight: 600;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

.btn.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #0b0f14;
  border: none;
  box-shadow: var(--shadow-soft);
}

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

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

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  font-size: 0.85rem;
  color: var(--muted);
}

.hero-panel {
  display: grid;
  gap: 26px;
}

.code-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.code-card::after {
  content: "";
  position: absolute;
  inset: -40% 10%;
  background: linear-gradient(120deg, transparent, rgba(125, 249, 255, 0.2), transparent);
  transform: translateX(-60%);
  animation: scan 6s ease-in-out infinite;
  pointer-events: none;
}

.card-title {
  font-family: var(--font-display);
  color: var(--accent);
  margin-bottom: 14px;
}

.code-line {
  font-family: "Courier New", monospace;
  font-size: 0.95rem;
  margin-bottom: 10px;
  color: var(--text);
}

.muted {
  color: var(--muted);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 18px;
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  border: 1px solid var(--stroke);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.4rem;
}

.stat-label {
  color: var(--muted);
  font-size: 0.9rem;
}

.section {
  padding: var(--section-gap) 0 30px;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 34px;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}

.card {
  padding: 26px;
  border-radius: var(--radius-md);
  border: 1px solid var(--stroke);
  background: var(--card);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card h3 {
  font-family: var(--font-display);
  margin-bottom: 10px;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.18);
}

.pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.pill {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 0.9rem;
}

.timeline {
  display: grid;
  gap: 24px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: start;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--stroke);
  background: var(--card);
}

.timeline-year {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 1.2rem;
}

.contact-card {
  padding: 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--stroke);
  background: var(--card);
  display: grid;
  gap: 22px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer {
  padding: 40px 10vw 60px;
  color: var(--muted);
  text-align: center;
  border-top: 1px solid var(--stroke);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.float {
  animation: float 6s ease-in-out infinite;
}

.float-slow {
  animation: float 8s ease-in-out infinite;
}

@keyframes glow-drift {
  0% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-2%) scale(1.02);
  }
  100% {
    transform: translateY(1%) scale(1.01);
  }
}

@keyframes page-in {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes grid-shift {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 80px 80px;
  }
}

@keyframes scan {
  0% {
    transform: translateX(-60%);
    opacity: 0;
  }
  45% {
    opacity: 0.4;
  }
  100% {
    transform: translateX(60%);
    opacity: 0;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 860px) {
  .nav {
    display: none;
  }

  .site-header {
    flex-wrap: wrap;
    justify-content: space-between;
  }
}

@media (max-width: 600px) {
  main {
    padding: 20px 6vw 70px;
  }

  .hero {
    padding-top: 40px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}