/* =========================================
 * Form Document Generator — marketing site
 * ========================================= */

:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-muted: #eef2ff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --primary: #2563eb;
  --primary-strong: #1d4ed8;
  --primary-soft: #e0e7ff;
  --accent: #0ea5e9;
  --success: #16a34a;
  --warning: #d97706;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 10px 25px -15px rgba(15, 23, 42, 0.25);
  --shadow-lg: 0 25px 50px -20px rgba(15, 23, 42, 0.25);
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  color: var(--text);
  line-height: 1.25;
  margin: 0 0 0.4em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4vw + 0.5rem, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2vw + 0.75rem, 2.25rem); letter-spacing: -0.015em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

p { margin: 0 0 1em; color: var(--text-muted); }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Navigation ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand:hover { text-decoration: none; }

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
  display: grid;
  place-items: center;
  color: white;
  font-weight: 800;
  font-size: 14px;
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-cta { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--primary-strong); }

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--border-strong); background: var(--bg-soft); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-soft); }

.btn-large { padding: 14px 22px; font-size: 1rem; border-radius: 12px; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 80px 0 64px;
  background:
    radial-gradient(60% 60% at 20% 10%, rgba(37, 99, 235, 0.08), transparent 60%),
    radial-gradient(50% 60% at 90% 15%, rgba(14, 165, 233, 0.08), transparent 60%),
    linear-gradient(to bottom, #ffffff, var(--bg-soft));
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-strong);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--primary);
  display: inline-block;
}

.hero p.lead {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 560px;
}

.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

.hero-meta {
  display: flex;
  gap: 20px;
  margin-top: 28px;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}
.hero-meta span { display: inline-flex; gap: 8px; align-items: center; }
.hero-meta svg { width: 16px; height: 16px; color: var(--success); flex: none; }

.hero-art {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(124, 58, 237, 0.08));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.hero-card {
  background: #fff;
  border-radius: 14px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.hero-card-head {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 6px;
  align-items: center;
  background: #f8fafc;
}
.hero-card-head .dot { width: 10px; height: 10px; border-radius: 999px; background: #e2e8f0; }
.hero-card-head .title {
  margin-left: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.hero-card-body { padding: 20px 22px; }

.pill-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.pill {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg-muted);
  color: var(--primary-strong);
}

.fake-line {
  height: 10px;
  border-radius: 4px;
  background: linear-gradient(90deg, #eef2ff, #e0e7ff);
  margin-bottom: 10px;
}
.fake-line.w-90 { width: 90%; }
.fake-line.w-70 { width: 70%; }
.fake-line.w-50 { width: 50%; }
.fake-line.w-30 { width: 30%; }

.hero-card-row {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 10px 0;
  border-top: 1px dashed var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.hero-card-row .chip {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  background: #dcfce7;
  color: #15803d;
}

/* ---------- Sections ---------- */

section { padding: 72px 0; }
section.alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head p { font-size: 1.05rem; }

/* ---------- Step / How it works ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.step {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.step-num {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-strong);
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 12px;
}

/* ---------- Features ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.feature:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary-strong);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 { margin-bottom: 6px; }
.feature p { margin: 0; font-size: 0.95rem; }

/* ---------- Use cases ---------- */

.use-cases { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.use-case {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  font-weight: 600;
  color: var(--text);
}
.use-case .emoji { font-size: 1.5rem; margin-bottom: 8px; display: block; }

/* ---------- Pricing ---------- */

.pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}
.plan {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.plan.highlighted {
  border-color: var(--primary);
  box-shadow: 0 20px 40px -20px rgba(37, 99, 235, 0.35);
}
.plan-badge {
  position: absolute;
  top: -12px;
  right: 18px;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
}
.plan h3 { margin-bottom: 6px; }
.plan .plan-sub { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 18px; }
.plan-price {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.plan-price .unit {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}
.plan-yearly {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
  margin-bottom: 18px;
}
.plan ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex: 1;
}
.plan li {
  padding: 7px 0;
  padding-left: 26px;
  position: relative;
  color: var(--text);
  font-size: 0.93rem;
}
.plan li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary-soft) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231d4ed8' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/9px 9px no-repeat;
}
.plan-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 14px;
}

.price-toggle {
  display: inline-flex;
  background: #eef2ff;
  border-radius: 999px;
  padding: 4px;
  margin: 0 auto 32px;
  gap: 4px;
}
.price-toggle button {
  border: none;
  background: transparent;
  padding: 7px 16px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
}
.price-toggle button.active {
  background: #fff;
  color: var(--primary-strong);
  box-shadow: var(--shadow-sm);
}

/* ---------- FAQ ---------- */

.faq { max-width: 800px; margin: 0 auto; }
.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 14px 20px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}
.faq details[open] { border-color: var(--border-strong); }
.faq summary {
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--text-muted); font-weight: 400; font-size: 1.2rem; margin-left: 12px; }
.faq details[open] summary::after { content: '–'; }
.faq details p { padding-top: 10px; margin: 0; }

/* ---------- CTA banner ---------- */

.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin: 24px 0 0;
}
.cta-banner h2 { color: #fff; }
.cta-banner p { color: rgba(255, 255, 255, 0.85); max-width: 600px; margin: 6px auto 22px; }
.cta-banner .btn-primary { background: #fff; color: var(--primary-strong); }
.cta-banner .btn-primary:hover { background: #eef2ff; }
.cta-banner .btn-secondary { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.4); }
.cta-banner .btn-secondary:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.7); }

/* ---------- Footer ---------- */

.footer {
  padding: 48px 0 32px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  background: var(--bg-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer h4 { color: var(--text); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 12px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 8px; }
.footer a { color: var(--text-muted); }
.footer a:hover { color: var(--text); text-decoration: none; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Docs layout ---------- */

.docs {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 40px 0 80px;
  align-items: start;
}

.docs-sidebar {
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 100px);
  overflow: auto;
  font-size: 0.92rem;
  padding-right: 8px;
}

.docs-sidebar h4 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 18px 0 8px;
  padding-left: 8px;
}
.docs-sidebar h4:first-child { margin-top: 0; }

.docs-sidebar a {
  display: block;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--text-muted);
  font-weight: 500;
  border-left: 2px solid transparent;
  margin-bottom: 1px;
}
.docs-sidebar a:hover {
  background: var(--bg-soft);
  color: var(--text);
  text-decoration: none;
}
.docs-sidebar a.active {
  color: var(--primary-strong);
  border-left-color: var(--primary);
  background: var(--bg-muted);
}

.docs-content {
  max-width: 780px;
  color: var(--text);
}

.docs-content h1 { font-size: 2rem; margin-top: 0; }
.docs-content h2 {
  margin-top: 2.2em;
  padding-top: 0.6em;
  border-top: 1px solid var(--border);
  font-size: 1.6rem;
  scroll-margin-top: 96px;
}
.docs-content h3 { margin-top: 1.8em; font-size: 1.15rem; scroll-margin-top: 96px; }
.docs-content p { color: var(--text); }
.docs-content ul, .docs-content ol { padding-left: 1.4em; color: var(--text); }
.docs-content li { margin-bottom: 6px; }
.docs-content code {
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: #f1f5f9;
  color: #0f172a;
  padding: 2px 6px;
  border-radius: 5px;
}
.docs-content pre {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 16px 18px;
  overflow: auto;
  font-size: 0.88rem;
  line-height: 1.55;
  margin: 14px 0 22px;
}
.docs-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.docs-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 22px;
  font-size: 0.93rem;
}
.docs-content th, .docs-content td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.docs-content th {
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.callout {
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  background: #f8fafc;
  padding: 14px 18px;
  border-radius: 8px;
  margin: 14px 0 22px;
}
.callout.warning { border-left-color: var(--warning); background: #fff7ed; }
.callout.success { border-left-color: var(--success); background: #f0fdf4; }
.callout p:last-child { margin: 0; }
.callout strong { color: var(--text); }

.docs-hero {
  background: linear-gradient(to bottom, var(--bg-muted), transparent);
  border-bottom: 1px solid var(--border);
  padding: 56px 0 40px;
}
.docs-hero h1 { margin-bottom: 6px; }
.docs-hero p { font-size: 1.05rem; max-width: 640px; }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .steps, .features { grid-template-columns: 1fr 1fr; }
  .use-cases { grid-template-columns: 1fr 1fr; }
  .pricing { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .docs { grid-template-columns: 1fr; }
  .docs-sidebar { position: static; max-height: none; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
}

@media (max-width: 640px) {
  section { padding: 56px 0; }
  .hero { padding: 56px 0 40px; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .steps, .features, .use-cases { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 32px 20px; }
}

.nav-open .nav-links {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 68px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  gap: 8px;
  box-shadow: var(--shadow);
}
.nav-open .nav-links a { padding: 10px 0; }