:root {
  --bg: #05060d;
  --bg-2: #0a0c18;
  --fg: #e6e9f2;
  --muted: #9aa1b4;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --amber: #fbbf24;
  --pink: #ec4899;
  --indigo: #6366f1;
  --orange: #f97316;
  --lime: #a3e635;
  --radius: 18px;
  --easing: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100svh;
  overflow-x: hidden;
}

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

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

/* ---------- Background ---------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(99, 102, 241, 0.18), transparent 60%),
    radial-gradient(900px 700px at -10% 110%, rgba(34, 211, 238, 0.14), transparent 55%),
    var(--bg);
}

.orb {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
  will-change: transform;
  animation: drift 22s ease-in-out infinite;
}
.orb-1 {
  top: -10%;
  left: -8%;
  background: radial-gradient(circle, var(--violet), transparent 70%);
}
.orb-2 {
  bottom: -15%;
  right: -10%;
  background: radial-gradient(circle, var(--cyan), transparent 70%);
  animation-delay: -7s;
  animation-duration: 28s;
}
.orb-3 {
  top: 40%;
  left: 55%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, var(--pink), transparent 70%);
  animation-delay: -14s;
  animation-duration: 30s;
  opacity: 0.4;
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  33% {
    transform: translate3d(40px, -30px, 0) scale(1.05);
  }
  66% {
    transform: translate3d(-30px, 40px, 0) scale(0.97);
  }
}

.grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 30%, transparent 75%);
}

#particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.7;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px max(24px, 5vw);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: linear-gradient(to bottom, rgba(5, 6, 13, 0.7), rgba(5, 6, 13, 0.2));
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  color: #0a0a0a;
  box-shadow: 0 6px 20px rgba(167, 139, 250, 0.25);
}
.brand-text {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 13px;
  color: var(--fg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: var(--muted);
}
.nav-links a {
  transition: color 0.2s var(--easing);
}
.nav-links a:hover {
  color: var(--fg);
}
.nav-cta {
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--fg) !important;
  transition: background 0.2s var(--easing), border-color 0.2s var(--easing);
}
.nav-cta:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.28);
}

/* ---------- Hero ---------- */
main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 max(24px, 5vw);
}

.hero {
  padding: clamp(64px, 12vw, 140px) 0 clamp(40px, 8vw, 80px);
  text-align: left;
  max-width: 880px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 22px;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.85);
  }
}

.title {
  margin: 0 0 18px;
  font-size: clamp(40px, 7.2vw, 84px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.035em;
}
.line {
  display: block;
}
.gradient {
  background: linear-gradient(120deg, var(--cyan), var(--violet) 55%, var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 100%;
  animation: shimmer 7s linear infinite;
}
@keyframes shimmer {
  to {
    background-position: -200% 0;
  }
}

.lede {
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 18px);
  max-width: 60ch;
  line-height: 1.6;
  margin: 0 0 32px;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 14px;
  transition: transform 0.2s var(--easing), background 0.2s var(--easing),
    border-color 0.2s var(--easing), box-shadow 0.2s var(--easing);
  border: 1px solid transparent;
}
.btn.primary {
  background: linear-gradient(135deg, #fff, #d5d7e2);
  color: #0a0a0a;
  box-shadow: 0 12px 30px rgba(255, 255, 255, 0.08);
}
.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(255, 255, 255, 0.15);
}
.btn.ghost {
  border-color: var(--line-strong);
  color: var(--fg);
}
.btn.ghost:hover {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-2px);
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 22px;
  padding: 40px 0 80px;
}

.card {
  --accent: var(--cyan);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  transition: transform 0.5s var(--easing), border-color 0.4s var(--easing),
    box-shadow 0.4s var(--easing);
  isolation: isolate;
}
.card[data-accent='cyan'] {
  --accent: var(--cyan);
}
.card[data-accent='violet'] {
  --accent: var(--violet);
}
.card[data-accent='amber'] {
  --accent: var(--amber);
}
.card[data-accent='pink'] {
  --accent: var(--pink);
}
.card[data-accent='lime'] {
  --accent: var(--lime);
}
.card[data-accent='ember'] {
  --accent: var(--orange);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 40%, color-mix(in srgb, var(--accent) 60%, transparent));
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s var(--easing);
  pointer-events: none;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow:
    0 30px 60px -20px rgba(0, 0, 0, 0.6),
    0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent);
}
.card:hover::before {
  opacity: 1;
}

.card-spotlight {
  position: absolute;
  inset: -1px;
  background: radial-gradient(
    320px circle at var(--mx, 50%) var(--my, 0%),
    color-mix(in srgb, var(--accent) 22%, transparent),
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.4s var(--easing);
  pointer-events: none;
}
.card:hover .card-spotlight {
  opacity: 1;
}

.card-art {
  position: relative;
  height: 130px;
  border-bottom: 1px solid var(--line);
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.03), transparent 70%);
  overflow: hidden;
}
.card-art svg {
  width: 100%;
  height: 100%;
}

.card-body {
  position: relative;
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.card-index {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.card-title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card-desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.chips {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chips li {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  color: var(--fg);
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}

.card-cta {
  margin-top: auto;
  padding-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  transition: gap 0.25s var(--easing);
}
.card:hover .card-cta {
  gap: 10px;
}

/* ---------- Stack ---------- */
.stack {
  padding: 24px 0 80px;
}
.stack h2 {
  margin: 0 0 16px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  font-weight: 600;
}
.stack-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.stack-grid li {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
  color: var(--fg);
  transition: border-color 0.2s var(--easing), background 0.2s var(--easing),
    transform 0.2s var(--easing);
}
.stack-grid li:hover {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
.foot {
  border-top: 1px solid var(--line);
  padding: 20px max(24px, 5vw);
  color: var(--muted);
  font-size: 13px;
}
.foot-row {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.foot a {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12px;
  color: var(--fg);
  transition: color 0.2s var(--easing);
}
.foot a:hover {
  color: var(--cyan);
}

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--easing), transform 0.8s var(--easing);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
  #particles {
    display: none;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .nav {
    padding: 14px 18px;
  }
  .nav-links a:not(.nav-cta) {
    display: none;
  }
  .brand-text {
    font-size: 12px;
  }
}