/* ── Tokens ── */
:root {
  --bg: #070b12;
  --bg-alt: #0c1220;
  --surface: #111827;
  --surface-hover: #1a2332;
  --border: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.22);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent: #22d3ee;
  --accent-dim: rgba(34, 211, 238, 0.15);
  --warn: #fbbf24;
  --success: #34d399;
  --gradient: linear-gradient(135deg, #22d3ee 0%, #818cf8 50%, #f472b6 100%);
  --font: "Outfit", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 12px;
  --radius-lg: 20px;
  --header-h: 72px;
  --container: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

/* ── Background effects ── */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}
.glow--left {
  top: -200px;
  left: -200px;
  background: rgba(34, 211, 238, 0.25);
}
.glow--right {
  bottom: -100px;
  right: -200px;
  background: rgba(129, 140, 248, 0.2);
}

/* ── Typography ── */
.eyebrow {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
}
h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.header--scrolled {
  background: rgba(7, 11, 18, 0.85);
  backdrop-filter: blur(16px);
  border-color: var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
}
.logo__icon { font-size: 1.25rem; }
.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav__links a {
  font-size: 0.9375rem;
  color: var(--text-muted);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--text); }
.nav__cta {
  padding: 0.5rem 1rem;
  background: var(--accent-dim);
  color: var(--accent) !important;
  border-radius: 8px;
  border: 1px solid rgba(34, 211, 238, 0.3);
}
.nav__cta:hover {
  background: rgba(34, 211, 238, 0.25);
}
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s, background 0.2s;
}
.btn:active { transform: scale(0.98); }
.btn--primary {
  background: var(--accent);
  color: #0a0e17;
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.35);
}
.btn--primary:hover {
  box-shadow: 0 0 32px rgba(34, 211, 238, 0.5);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn--ghost:hover {
  background: var(--surface);
  border-color: var(--text-dim);
}

/* ── Hero ── */
.hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: 100vh;
  padding-top: var(--header-h);
  padding-bottom: 4rem;
}
.hero__lead {
  margin-top: 1.25rem;
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 32rem;
  line-height: 1.7;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

/* ── Terminal ── */
.terminal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.875rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border);
}
.terminal__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
}
.terminal__dot:nth-child(1) { background: #ef4444; }
.terminal__dot:nth-child(2) { background: #fbbf24; }
.terminal__dot:nth-child(3) { background: #34d399; }
.terminal__title {
  margin-left: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}
.terminal__body {
  padding: 1.25rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  overflow-x: auto;
}
.c-muted { color: var(--text-dim); }
.c-accent { color: var(--accent); }
.c-key { color: #a5b4fc; }
.c-warn { color: var(--warn); }

/* ── Sections ── */
.section {
  position: relative;
  z-index: 1;
  padding: 6rem 0;
}
.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}
.section__header {
  max-width: 36rem;
  margin-bottom: 3rem;
}
.section__subtitle {
  margin-top: 0.75rem;
  color: var(--text-muted);
  font-size: 1.0625rem;
}
.about p {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 42rem;
  line-height: 1.8;
}
.about p + p { margin-top: 1rem; }
.about strong { color: var(--text); font-weight: 500; }

/* ── Cards ── */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.card {
  position: relative;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s, transform 0.3s var(--ease);
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
}
.card--featured {
  border-color: rgba(34, 211, 238, 0.35);
  background: linear-gradient(160deg, rgba(34, 211, 238, 0.08) 0%, var(--surface) 60%);
}
.card__badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.625rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 6px;
}
.card__icon { font-size: 1.75rem; margin-bottom: 1rem; }
.card__desc {
  margin: 0.5rem 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}
.card__list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.card__list li + li { margin-top: 0.5rem; }
.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── Checklist ── */
.checklist {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 40rem;
}
.checklist li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s;
}
.checklist li:hover { border-color: rgba(52, 211, 153, 0.4); }
.checklist__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(52, 211, 153, 0.15);
  color: var(--success);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 700;
}
.checklist strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}
.checklist span {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ── Pillars ── */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.pillar {
  padding: 2rem 0;
  border-top: 2px solid var(--border);
  transition: border-color 0.3s;
}
.pillar:hover { border-color: var(--accent); }
.pillar__num {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--accent);
  margin-bottom: 1rem;
}
.pillar h3 { margin-bottom: 0.75rem; }
.pillar p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── Install ── */
.install {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  padding: 3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.install__text p:not(.eyebrow) {
  margin-top: 0.75rem;
  color: var(--text-muted);
}
.install__commands {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.command-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.command-block__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.625rem 1rem;
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.copy-btn {
  font-family: var(--font);
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.copy-btn.copied { color: var(--success); border-color: var(--success); }
.command-block code {
  display: block;
  padding: 1rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--accent);
  overflow-x: auto;
}

/* ── CTA ── */
.cta-section {
  position: relative;
  z-index: 1;
  padding: 4rem 0 6rem;
}
.cta {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(160deg, rgba(34, 211, 238, 0.1) 0%, rgba(129, 140, 248, 0.08) 100%);
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: var(--radius-lg);
}
.cta__emoji { font-size: 2rem; margin-bottom: 1rem; }
.cta h2 { margin-bottom: 0.75rem; }
.cta > p {
  color: var(--text-muted);
  max-width: 28rem;
  margin: 0 auto 2rem;
}
.cta__links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Footer ── */
.footer {
  position: relative;
  z-index: 1;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-dim);
}
.footer a {
  color: var(--accent);
  transition: opacity 0.2s;
}
.footer a:hover { opacity: 0.8; }

/* ── Reveal animations ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal--delay { transition-delay: 0.12s; }
.reveal--delay-2 { transition-delay: 0.24s; }

/* ── Mobile nav open ── */
.nav__links--open {
  display: flex !important;
  flex-direction: column;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  padding: 1.5rem 2rem 2rem;
  background: rgba(7, 11, 18, 0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  gap: 1.25rem !important;
}
.nav__toggle--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle--open span:nth-child(2) { opacity: 0; }
.nav__toggle--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Responsive ── */
@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding-top: calc(var(--header-h) + 2rem);
    min-height: auto;
  }
  .hero__terminal { order: -1; }
  .cards,
  .pillars { grid-template-columns: 1fr; }
  .install { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav__toggle { display: flex; }
  .nav__links { display: none; }
  .section { padding: 4rem 0; }
  .install { padding: 1.5rem; }
  .footer__inner { flex-direction: column; text-align: center; }
}