/* Dissiq — Landing site shared styles
   Reuses design tokens from privacy-policy.html. Single CSS file, no build step. */

:root {
  --primary: #7C3AED;
  --primary-light: #8B5CF6;
  --primary-dark: #6D28D9;
  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --text: #1F2937;
  --text-secondary: #6B7280;
  --border: #E5E7EB;
  --border-strong: #D1D5DB;
  --code-bg: #F3F4F6;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --radius: 10px;
  --radius-lg: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); text-decoration: underline; }
code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }

/* ----- Header ----- */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); }
.brand:hover { color: var(--text); text-decoration: none; }
.brand-mark { font-size: 1.4rem; color: var(--primary); }
.brand-name { font-size: 1.15rem; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: var(--text-secondary); font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ----- Buttons ----- */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.05s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-decoration: none !important;
}
.btn-sm { padding: 7px 14px; font-size: 0.875rem; }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-primary { background: var(--primary); color: white !important; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-dark); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--text) !important; border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--code-bg); }

/* ----- Hero ----- */
.hero { padding: 80px 0 64px; text-align: center; }
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero .lead {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.hero-meta { color: var(--text-secondary); font-size: 0.9rem; }

/* ----- Sections ----- */
section { padding: 64px 0; }
section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  text-align: center;
  letter-spacing: -0.01em;
}
.section-lead {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* ----- Grid + Cards ----- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--text-secondary); font-size: 0.95rem; }

/* ----- Features ----- */
.features { background: var(--surface); }
.features h2 { margin-bottom: 40px; }

/* ----- Pricing ----- */
.pricing { background: var(--bg); }
.pricing-grid { margin-top: 32px; }
.price-card { display: flex; flex-direction: column; }
.price-card ul { list-style: none; margin: 20px 0 24px; padding: 0; }
.price-card li {
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--text);
  border-bottom: 1px dashed var(--border);
}
.price-card li:last-child { border-bottom: none; }
.price-card .btn { margin-top: auto; }
.price-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--code-bg);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.price-badge-featured { background: var(--primary); color: white; }
.price-card-featured {
  border-color: var(--primary);
  border-width: 2px;
  position: relative;
  transform: scale(1.02);
}
.price {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 8px 0 4px;
}
.price-unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.refund-note {
  margin-top: 32px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* ----- Disclosure ----- */
.disclosure { background: var(--surface); }
.disclosure h2 { margin-bottom: 24px; }
.disclosure p {
  max-width: 720px;
  margin: 0 auto 16px;
  text-align: center;
  color: var(--text-secondary);
}

/* ----- FAQ ----- */
.faq { background: var(--bg); }
.faq h2 { margin-bottom: 40px; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 12px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  float: right;
  color: var(--text-secondary);
  font-size: 1.3rem;
  line-height: 1;
}
.faq details[open] summary::after { content: '−'; }
.faq details p {
  margin-top: 12px;
  color: var(--text-secondary);
}

/* ----- Footer ----- */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 32px;
}
.footer-grid h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.footer-grid a {
  display: block;
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 8px;
}
.footer-grid a:hover { color: var(--primary); }
.brand-footer { margin-bottom: 12px; }
.muted { color: var(--text-secondary); font-size: 0.9rem; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom code {
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
}

/* ----- Legal pages (terms/AUP/privacy) reuse ----- */
.legal-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
.legal-page header { text-align: center; margin-bottom: 40px; }
.legal-page header h1 { font-size: 2rem; color: var(--primary); margin-bottom: 6px; }
.legal-page header p { color: var(--text-secondary); font-size: 0.9rem; }
.legal-page h2 {
  font-size: 1.3rem;
  margin: 32px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.legal-page h3 { font-size: 1.05rem; margin: 20px 0 8px; }
.legal-page p, .legal-page li { color: var(--text); margin-bottom: 12px; }
.legal-page ul, .legal-page ol { padding-left: 24px; margin-bottom: 16px; }

/* ----- Mobile ----- */
@media (max-width: 720px) {
  .nav-links { gap: 14px; }
  .nav-links a:not(.btn) { display: none; }
  .nav-links a.btn { display: inline-block; }
  .hero { padding: 56px 0 40px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  section { padding: 48px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .price-card-featured { transform: none; }
}