:root {
  --bg-deep: #0a0b14;
  --text: #f0f2ff;
  --text-muted: rgba(240, 242, 255, 0.72);
  --accent-cyan: #22d3ee;
  --accent-violet: #a78bfa;
  --accent-pink: #f472b6;
  --glass: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --radius: 1.25rem;
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg-deep);
  overflow-x: hidden;
}

.mesh-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--bg-deep);
  overflow: hidden;
}

.mesh-bg::before,
.mesh-bg::after {
  content: "";
  position: absolute;
  width: 140%;
  height: 140%;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: mesh-drift 18s ease-in-out infinite alternate;
}

.mesh-bg::before {
  top: -30%;
  left: -20%;
  background: radial-gradient(circle, #4f46e5 0%, transparent 70%);
}

.mesh-bg::after {
  bottom: -40%;
  right: -25%;
  background: radial-gradient(circle, #ec4899 0%, transparent 65%);
  animation-delay: -9s;
  animation-direction: alternate-reverse;
}

.mesh-orb {
  position: absolute;
  width: min(50vw, 420px);
  height: min(50vw, 420px);
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.4;
  animation: mesh-drift 22s ease-in-out infinite;
}

.mesh-orb--cyan {
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
  animation-duration: 24s;
}

@keyframes mesh-drift {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(8%, -6%) scale(1.08);
  }
}

.wrap {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
  backdrop-filter: blur(16px);
  background: rgba(10, 11, 20, 0.65);
  border-bottom: 1px solid var(--glass-border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-size: 0.9rem;
}

.nav a {
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.hero {
  padding: clamp(4rem, 12vw, 7rem) 0 clamp(3rem, 8vw, 5rem);
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  margin-bottom: 1.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.08);
  animation: fade-up 0.8s ease both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  animation: fade-up 0.8s ease 0.1s both;
}

.hero h1 span {
  background: linear-gradient(135deg, #fff 20%, var(--accent-violet) 60%, var(--accent-pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  max-width: 38rem;
  margin-inline: auto;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--text-muted);
  animation: fade-up 0.8s ease 0.2s both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
  animation: fade-up 0.8s ease 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

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

.btn--primary {
  background: linear-gradient(135deg, var(--accent-cyan), #6366f1);
  color: #0a0b14;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.35);
}

.btn--ghost {
  background: var(--glass);
  border-color: var(--glass-border);
  color: var(--text);
  backdrop-filter: blur(12px);
}

section {
  padding: clamp(3rem, 8vw, 5rem) 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-violet);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--text-muted);
  max-width: 42rem;
  margin-bottom: 2rem;
}

.grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.card {
  padding: 1.5rem;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  transition: transform 0.35s ease, border-color 0.35s, box-shadow 0.35s;
  animation: fade-in 0.7s ease both;
  animation-timeline: view();
  animation-range: entry 0% cover 35%;
}

@supports not (animation-timeline: view()) {
  .card {
    animation: none;
  }
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(167, 139, 250, 0.45);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.2);
}

.card-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  border-radius: 0.75rem;
  font-size: 1.25rem;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(167, 139, 250, 0.2));
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.chip {
  font-size: 0.8rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--accent-cyan);
  transition: background 0.2s;
}

.chip:hover {
  background: rgba(34, 211, 238, 0.12);
}

.arch-diagram {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .arch-diagram {
    grid-template-columns: repeat(3, 1fr);
  }

  .arch-gateway {
    grid-column: 1 / -1;
  }
}

.arch-node {
  padding: 1.25rem;
  text-align: center;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  border: 1px dashed var(--glass-border);
  animation: fade-in 0.7s ease both;
  animation-timeline: view();
  animation-range: entry 0% cover 30%;
}

.arch-gateway .arch-node {
  border-style: solid;
  border-color: rgba(34, 211, 238, 0.35);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(99, 102, 241, 0.12));
}

.arch-node strong {
  display: block;
  font-family: var(--font-display);
  margin-bottom: 0.35rem;
}

.arch-node span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.feature-list {
  display: grid;
  gap: 0.75rem;
}

.feature-list li {
  padding-left: 1.25rem;
  position: relative;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

.repos {
  margin-top: 2rem;
}

.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Opacity-only for scroll-driven grid items — translateY overlaps siblings mid-entry */
@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}