/* instanbul.app — shared styles */
:root {
  --bg: #0a0b10;
  --bg-elev: #11131a;
  --ink: #e8eaf0;
  --ink-mute: #9094a3;
  --ink-dim: #5d6172;
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.12);
  --accent-1: #06b6d4;
  --accent-2: #3b82f6;
  --accent-3: #6366f1;
  --grad: linear-gradient(135deg, #06b6d4 0%, #3b82f6 55%, #6366f1 100%);
  --radius: 14px;
  --shadow: 0 20px 60px -20px rgba(6, 182, 212, 0.25);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated mesh background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(6, 182, 212, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 30%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 40% 100%, rgba(59, 130, 246, 0.10) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

a { color: var(--accent-2); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-3); }

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  background: rgba(10, 11, 16, 0.72);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 9px;
  background: var(--grad);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 20px -4px rgba(59, 130, 246, 0.5);
}
.brand-mark svg { display: block; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a {
  color: var(--ink-mute);
  font-size: 14px;
  font-weight: 500;
}
.nav a:hover { color: var(--ink); }

/* ---- Hero ---- */
.hero {
  padding: 96px 0 80px;
  text-align: center;
  position: relative;
}
.hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 100px;
  font-size: 13px;
  color: #93c5fd;
  margin-bottom: 28px;
  font-weight: 500;
}
.hero .badge .dot {
  width: 6px; height: 6px;
  background: var(--accent-2);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-2);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}
.hero h1 {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 20px;
}
.hero h1 .grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lede {
  font-size: 19px;
  color: var(--ink-mute);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.55;
}
.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: transform .15s, box-shadow .15s, background .15s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--grad);
  color: white;
  box-shadow: var(--shadow);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 24px 70px -20px rgba(59, 130, 246, 0.5);
  color: white;
}
.btn-ghost {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  color: var(--ink);
}

/* ---- Features ---- */
.section { padding: 64px 0; }
.section-title {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  text-align: center;
}
.section-sub {
  text-align: center;
  color: var(--ink-mute);
  font-size: 16px;
  margin-bottom: 48px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .2s, transform .2s;
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}
.card-icon {
  width: 44px; height: 44px;
  border-radius: 11px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  display: grid; place-items: center;
  margin-bottom: 16px;
}
.card-icon svg { display: block; color: var(--accent-2); }
.card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.card p {
  color: var(--ink-mute);
  font-size: 14.5px;
  line-height: 1.55;
}

/* ---- Doc page (privacy/terms/data-deletion) ---- */
.doc-page { padding: 56px 0 80px; }
.doc-page h1 {
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}
.doc-page .meta {
  color: var(--ink-dim);
  font-size: 14px;
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.doc-page h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 40px 0 14px;
  color: var(--ink);
}
.doc-page h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 28px 0 10px;
  color: var(--ink);
}
.doc-page p, .doc-page li {
  color: var(--ink-mute);
  font-size: 15.5px;
  line-height: 1.7;
}
.doc-page p { margin-bottom: 14px; }
.doc-page ul, .doc-page ol {
  margin: 8px 0 16px;
  padding-left: 22px;
}
.doc-page li { margin-bottom: 6px; }
.doc-page strong { color: var(--ink); font-weight: 600; }
.doc-page code {
  font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  padding: 2px 7px;
  border-radius: 5px;
  color: #93c5fd;
}
.doc-page .callout {
  background: rgba(6, 182, 212, 0.06);
  border-left: 3px solid var(--accent-1);
  padding: 16px 20px;
  border-radius: 8px;
  margin: 20px 0;
}
.doc-page .callout p { margin: 0; color: var(--ink); }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 80px;
  padding: 40px 0;
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.site-footer .copy {
  color: var(--ink-dim);
  font-size: 13px;
}
.site-footer .links {
  display: flex;
  gap: 24px;
}
.site-footer .links a {
  color: var(--ink-mute);
  font-size: 13px;
}
.site-footer .links a:hover { color: var(--ink); }

@media (max-width: 600px) {
  .nav { gap: 18px; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 48px 0; }
  .site-footer .container { flex-direction: column; text-align: center; }
}