/* LearnerLM marketing site — static informational pages only */

:root {
  --accent: #10a37f;
  --accent-dark: #0d8c6d;
  --accent-light: #e8f5f1;
  --bg: #ffffff;
  --bg-muted: #f7f7f8;
  --surface: #ffffff;
  --border: #e5e5e5;
  --text: #0d0d0d;
  --text-secondary: #6e6e80;
  --text-tertiary: #8e8ea0;
  --max-width: 1080px;
  --content-width: 760px;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

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

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
  text-decoration: none;
}

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

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
  background: var(--bg-muted);
  text-decoration: none;
}

/* Hero */

.hero {
  background: linear-gradient(180deg, var(--accent-light) 0%, var(--bg) 55%);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 72px 24px 64px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.hero p.lead {
  margin: 0 auto 28px;
  max-width: 640px;
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

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

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

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
}

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

.btn-secondary:hover {
  background: var(--bg-muted);
  color: var(--text);
}

/* Sections */

section {
  padding: 64px 24px;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-muted {
  background: var(--bg-muted);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px;
}

.section-header h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--text-secondary);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.0625rem;
}

.card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-light);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 14px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.price-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow);
}

.price-card h3 {
  margin: 0 0 4px;
}

.price-card .amount {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 12px 0;
}

.price-card .amount span {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.price-card ul {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.price-card li {
  margin-bottom: 6px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.step {
  text-align: center;
}

.step-num {
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.step p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.notice {
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: var(--radius);
  padding: 16px 20px;
  color: #92400e;
  font-size: 0.9375rem;
}

/* Legal pages */

.legal-page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.legal-page h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.legal-meta {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  margin-bottom: 32px;
}

.legal-page h2 {
  margin: 36px 0 12px;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.legal-page h3 {
  margin: 24px 0 8px;
  font-size: 1.0625rem;
}

.legal-page p,
.legal-page li {
  color: var(--text-secondary);
}

.legal-page ul,
.legal-page ol {
  padding-left: 1.4rem;
}

.legal-page li {
  margin-bottom: 8px;
}

.toc {
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 32px;
}

.toc h2 {
  margin: 0 0 12px !important;
  font-size: 1rem !important;
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
}

.toc a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* Footer */

.site-footer {
  background: var(--bg-muted);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}

.footer-brand p {
  margin: 12px 0 0;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  max-width: 320px;
}

.footer-col h4 {
  margin: 0 0 12px;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-tertiary);
  font-size: 0.8125rem;
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding-top: 48px;
  }
}

/* Data safety tables */

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 0.9375rem;
}

.data-table th,
.data-table td {
  border: 1px solid var(--border);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: var(--bg-muted);
  font-weight: 600;
  color: var(--text);
}

.data-table td {
  color: var(--text-secondary);
}

.data-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-right: 4px;
  margin-bottom: 4px;
}

.data-badge.required {
  background: #fee2e2;
  color: #991b1b;
}

.data-badge.optional {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.data-badge.collected {
  background: #dbeafe;
  color: #1e40af;
}

.data-badge.shared {
  background: #fef3c7;
  color: #92400e;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.summary-card {
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.summary-card strong {
  display: block;
  font-size: 1.5rem;
  margin-bottom: 4px;
  color: var(--text);
}

.summary-card span {
  color: var(--text-secondary);
  font-size: 0.875rem;
}