@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #080a0f;
  --bg-elevated: #0f131c;
  --surface: #151a24;
  --surface-hover: #1c2330;
  --border: #252d3d;
  --border-light: #323d52;
  --text: #f0f3f8;
  --muted: #94a3b8;
  --accent: #5b8def;
  --accent-bright: #7aa8ff;
  --cyan: #22d3ee;
  --cyan-dim: #0891b2;
  --green: #34d399;
  --purple: #a78bfa;
  --orange: #fb923c;
  --max: 1080px;
  --radius: 14px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(91, 141, 239, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(34, 211, 238, 0.1), transparent),
    radial-gradient(ellipse 50% 30% at 0% 100%, rgba(167, 139, 250, 0.08), transparent);
  pointer-events: none;
  z-index: -1;
}

a { color: var(--accent-bright); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--cyan); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.03em;
}

.logo span {
  background: linear-gradient(135deg, var(--cyan), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0.35rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}

.site-nav a:hover { background: var(--surface); color: var(--text); }
.site-nav a.active { background: var(--surface); color: var(--text); }

.site-nav .nav-external { color: var(--cyan-dim); }
.site-nav .nav-external:hover { color: var(--cyan); }

/* Layout */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

.page-header {
  padding: 2.5rem 0 1.5rem;
}

.page-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 40rem;
}

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1rem;
  background: linear-gradient(180deg, #fff 0%, #c8d4e8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .lead {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 34rem;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s, background 0.15s;
}

.btn:hover { transform: translateY(-1px); border-color: var(--border-light); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent-dim, #3d5a99), var(--accent));
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 4px 24px rgba(91, 141, 239, 0.35);
}

.btn-primary:hover { border-color: var(--accent-bright); }

.badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.badges img { height: 22px; border-radius: 4px; }

/* Install block */
.install-block {
  max-width: 32rem;
  margin: 0 auto 3rem;
  text-align: left;
}

.install-block label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.code-block {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.code-block pre {
  margin: 0;
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  color: #c8d4e8;
}

.code-block .copy-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  padding: 0.35rem 0.65rem;
  font-size: 0.72rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
}

.code-block .copy-btn:hover { color: var(--text); border-color: var(--border-light); }
.code-block .copy-btn.copied { color: var(--green); border-color: var(--green); }

.install-tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}

.install-tab {
  padding: 0.4rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.install-tab:hover { color: var(--text); border-color: var(--border-light); }
.install-tab.active {
  background: var(--surface);
  color: var(--cyan);
  border-color: rgba(34, 211, 238, 0.4);
}

.install-panel { display: none; }
.install-panel.active { display: block; }

.install-alt {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.install-alt a { font-weight: 500; }

/* App preview mockup */
.preview-section {
  margin-top: 4rem;
  text-align: center;
}

.preview-window {
  margin: 1.5rem auto 0;
  max-width: 52rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  overflow: hidden;
  text-align: left;
}

.preview-titlebar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-light);
}

.preview-dot.red { background: #ef4444; }
.preview-dot.yellow { background: #eab308; }
.preview-dot.green { background: #22c55e; }

.preview-url {
  flex: 1;
  margin-left: 0.5rem;
  font-size: 0.72rem;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
}

.preview-body {
  display: grid;
  grid-template-columns: 140px 1fr 160px;
  min-height: 220px;
}

.preview-sidebar {
  background: #0c0e14;
  border-right: 1px solid var(--border);
  padding: 0.75rem;
}

.preview-sidebar .logo-mini {
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.preview-sidebar .logo-mini span { color: var(--cyan); }

.preview-nav-item {
  font-size: 0.68rem;
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.preview-nav-item.active {
  background: rgba(91, 141, 239, 0.15);
  color: var(--accent-bright);
}

.preview-main {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preview-pdf {
  flex: 1;
  min-height: 120px;
  border-radius: 8px;
  background: linear-gradient(135deg, #1a2030 0%, #252d40 100%);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.75rem;
}

.preview-detail {
  background: #0c0e14;
  border-left: 1px solid var(--border);
  padding: 0.75rem;
  font-size: 0.68rem;
}

.preview-detail h4 {
  font-size: 0.72rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.preview-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.preview-pill {
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.62rem;
  color: var(--muted);
}

.preview-pill.on {
  background: rgba(52, 211, 153, 0.15);
  border-color: var(--green);
  color: var(--green);
}

@media (max-width: 640px) {
  .preview-body { grid-template-columns: 1fr; }
  .preview-sidebar, .preview-detail { display: none; }
}

/* Sections */
section { margin-top: 4rem; }

.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
  color: var(--text);
}

p, li { color: var(--muted); }
li { margin: 0.35rem 0; }
ul, ol { padding-left: 1.25rem; margin: 0.5rem 0 1rem; }

/* Feature cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}

.card:hover {
  border-color: var(--border-light);
  background: var(--surface-hover);
  transform: translateY(-2px);
}

.card-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 0.85rem;
}

.card-icon.blue { background: rgba(91, 141, 239, 0.15); }
.card-icon.cyan { background: rgba(34, 211, 238, 0.15); }
.card-icon.green { background: rgba(52, 211, 153, 0.15); }
.card-icon.purple { background: rgba(167, 139, 250, 0.15); }

.card p { font-size: 0.9rem; line-height: 1.6; }

/* Source pills */
.source-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.source-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}

.source-pill:hover {
  border-color: var(--cyan-dim);
  background: var(--surface-hover);
  color: var(--text);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 0.75rem 0 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

th, td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th { background: var(--surface); color: var(--text); font-weight: 600; }
tr:last-child td { border-bottom: none; }
td { background: var(--bg-elevated); }

pre:not(.code-block pre) {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  margin: 0.75rem 0 1rem;
}

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.86em;
}

:not(pre) > code {
  background: var(--surface);
  padding: 0.15rem 0.4rem;
  border-radius: 5px;
  border: 1px solid var(--border);
  color: var(--cyan);
}

/* Steps */
.step {
  display: flex;
  gap: 1.15rem;
  margin: 1.5rem 0;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step-num {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--cyan-dim));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.step-body h3 { margin-top: 0; color: var(--cyan); }

.callout {
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.06);
  padding: 1rem 1.15rem;
  border-radius: var(--radius);
  margin: 1rem 0;
}

.callout.warn {
  border-color: rgba(251, 146, 60, 0.35);
  background: rgba(251, 146, 60, 0.08);
}

.callout p { color: var(--text); margin: 0; font-size: 0.92rem; }

.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.35rem;
  margin-bottom: 2rem;
}

.toc strong { display: block; margin-bottom: 0.5rem; color: var(--text); }
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 0.3rem 0; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  margin-top: 4rem;
}

.site-footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
}

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

.footer-copy {
  font-size: 0.82rem;
  color: var(--muted);
}

@media (max-width: 640px) {
  .site-header-inner { padding: 0.75rem 1rem; }
  .site-nav { gap: 0.1rem; }
  .site-nav a { padding: 0.35rem 0.5rem; font-size: 0.8rem; }
  main { padding: 0 1rem 3rem; }
  .hero { padding: 2.5rem 0 2rem; }
  .step { flex-direction: column; }
}