:root {
  --bg0: #05060a;
  --bg1: #0b1020;
  --fg: #e9eef7;
  --muted: #9aa7bd;
  --accent: #7cf6ff;
  --accent-glow: rgba(124, 246, 255, 0.55);
  --card-bg: rgba(12, 16, 30, 0.62);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-shadow: 0 20px 70px rgba(0, 0, 0, 0.55), 0 1px 0 rgba(255, 255, 255, 0.06) inset;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --content-w: 860px;
  --page-pad: 24px;
}

*, *::before, *::after { box-sizing: border-box; }

html { height: 100%; }

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--sans);
  color: var(--fg);
  background:
    radial-gradient(1200px 800px at 20% 10%, rgba(124, 246, 255, 0.12), transparent 55%),
    radial-gradient(900px 600px at 80% 30%, rgba(170, 106, 255, 0.12), transparent 60%),
    radial-gradient(900px 900px at 50% 120%, rgba(64, 255, 178, 0.10), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ─────────────────────────────────────────────── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 var(--page-pad);
  background: rgba(5, 6, 10, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
}

.site-header-inner {
  max-width: var(--content-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.site-logo {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--fg);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  transition: color 180ms ease, background 180ms ease;
}

.site-nav a:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.06);
}

.site-nav a.nav-cta {
  color: var(--bg0);
  background: var(--accent);
  font-weight: 600;
}

.site-nav a.nav-cta:hover {
  background: #a0f9ff;
}

/* ── Footer ─────────────────────────────────────────────── */

.site-footer {
  padding: 40px var(--page-pad) 32px;
  border-top: 1px solid var(--card-border);
  margin-top: 80px;
}

.site-footer-inner {
  max-width: var(--content-w);
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--muted);
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms ease;
}

.site-footer a:hover {
  color: var(--fg);
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* ── Main content area ──────────────────────────────────── */

.page-body {
  padding: calc(56px + 48px) var(--page-pad) 0;
  min-height: calc(100vh - 120px);
}

.page-content {
  max-width: var(--content-w);
  margin: 0 auto;
}

/* ── Shared card style ──────────────────────────────────── */

.glass-card {
  border-radius: 18px;
  padding: 28px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(10px);
}

/* ── Typography ─────────────────────────────────────────── */

h1 {
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

h2 {
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

h3 {
  font-size: 18px;
  line-height: 1.3;
  margin: 0 0 8px;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
  max-width: 65ch;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.pill {
  display: inline-block;
  font: 600 12px/1 var(--mono);
  color: rgba(233, 238, 247, 0.86);
  border: 1px solid rgba(124, 246, 255, 0.28);
  background: rgba(124, 246, 255, 0.08);
  padding: 6px 10px;
  border-radius: 999px;
}

/* ── Buttons ────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 600 15px/1 var(--sans);
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 180ms ease, transform 80ms ease;
  cursor: pointer;
  border: none;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: var(--bg0);
}

.btn-primary:hover { background: #a0f9ff; }

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--fg);
  border: 1px solid var(--card-border);
}

.btn-ghost:hover { background: rgba(255, 255, 255, 0.10); }

/* ── Vignette overlay ───────────────────────────────────── */

.vignette {
  position: fixed;
  inset: -1px;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(1200px 900px at 50% 30%, transparent 55%, rgba(0, 0, 0, 0.55) 85%),
    repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0 1px, rgba(0, 0, 0, 0) 1px 3px);
  mix-blend-mode: overlay;
  opacity: 0.35;
}

/* ── Forms ──────────────────────────────────────────────── */

input[type="email"],
input[type="text"] {
  font: 400 15px/1.4 var(--sans);
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: rgba(5, 7, 14, 0.6);
  color: var(--fg);
  outline: none;
  transition: border-color 180ms ease;
  width: 100%;
}

input[type="email"]:focus,
input[type="text"]:focus {
  border-color: rgba(124, 246, 255, 0.4);
}

/* ── Responsive ─────────────────────────────────────────── */

@media (max-width: 600px) {
  .site-header-inner { height: 48px; }
  .site-nav a { padding: 6px 8px; font-size: 13px; }
  .page-body { padding-top: calc(48px + 32px); }
  .glass-card { padding: 20px; }
}