/* ============================================================
   Topic OS -- Contract Review Hub Styles
   AI-Draft-Review/topic-os.css
   ============================================================ */

:root {
  --tos-primary: #2563eb;
  --tos-primary-dark: #1d4ed8;
  --tos-primary-light: #3b82f6;
  --tos-accent: #8b5cf6;
  --tos-success: #10b981;
  --tos-warning: #f59e0b;
  --tos-danger: #ef4444;
  --tos-text: #1a1a2e;
  --tos-text-secondary: #6b7280;
  --tos-bg: #f6f8fa;
  --tos-bg-dark: #1a1a2e;
  --tos-border: #e5e7eb;
  --tos-card: #ffffff;
  --tos-radius: 12px;
  --tos-font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ----------------------------------------------------------------
   A. Hero Enhancement -- Trust Badges & Sample Contract Picker
   ---------------------------------------------------------------- */
.tos-hero-enhance {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.tos-trust-row {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.tos-trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.05);
}

.tos-trust-badge .badge-icon {
  font-size: 1rem;
}

.tos-sample-picker {
  margin-top: 20px;
  text-align: center;
}

.tos-sample-picker label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin-right: 8px;
}

.tos-sample-picker select {
  padding: 8px 14px;
  font-size: 0.85rem;
  font-family: var(--tos-font);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  cursor: pointer;
  min-height: 44px;
}

.tos-sample-picker select option {
  background: #1e293b;
  color: white;
}

/* ----------------------------------------------------------------
   B. Review Tier Comparison
   ---------------------------------------------------------------- */
.tos-tiers-section {
  padding: 80px 24px;
  background: linear-gradient(180deg, var(--tos-bg) 0%, #ffffff 100%);
}

.tos-section-container {
  max-width: 1100px;
  margin: 0 auto;
}

.tos-section-header {
  text-align: center;
  margin-bottom: 48px;
}

.tos-section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--tos-text);
  margin-bottom: 12px;
  line-height: 1.2;
}

.tos-section-header p {
  font-size: 1.05rem;
  color: var(--tos-text-secondary);
  max-width: 650px;
  margin: 0 auto;
  line-height: 1.6;
}

.tos-tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1020px;
  margin: 0 auto;
}

.tos-tier-card {
  background: var(--tos-card);
  border: 2px solid var(--tos-border);
  border-radius: 16px;
  padding: 32px 28px;
  position: relative;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.tos-tier-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(37, 99, 235, 0.12);
  border-color: var(--tos-primary-light);
}

.tos-tier-card.tos-tier-featured {
  border-color: var(--tos-primary);
  box-shadow: 0 10px 40px rgba(37, 99, 235, 0.18);
  transform: scale(1.02);
}

.tos-tier-card.tos-tier-featured:hover {
  transform: scale(1.02) translateY(-4px);
}

.tos-tier-popular-label {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--tos-primary), var(--tos-accent));
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.tos-tier-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--tos-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.tos-tier-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--tos-text);
  margin-bottom: 4px;
}

.tos-tier-price .tos-price-suffix {
  font-size: 1rem;
  font-weight: 500;
  color: var(--tos-text-secondary);
}

.tos-tier-desc {
  font-size: 0.92rem;
  color: var(--tos-text-secondary);
  margin-bottom: 6px;
  line-height: 1.5;
}

.tos-tier-best {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tos-primary);
  margin-bottom: 20px;
  font-style: italic;
}

.tos-tier-features {
  list-style: none;
  margin: 0 0 24px 0;
  padding: 0;
}

.tos-tier-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: #475569;
  margin-bottom: 10px;
  line-height: 1.4;
}

.tos-tier-features li::before {
  content: '\2713';
  color: var(--tos-success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.tos-tier-cta {
  display: block;
  width: 100%;
  padding: 14px 20px;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--tos-font);
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  min-height: 48px;
}

.tos-tier-cta-primary {
  background: linear-gradient(135deg, var(--tos-primary), var(--tos-accent));
  color: white;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.tos-tier-cta-primary:hover {
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.4);
  transform: translateY(-1px);
}

.tos-tier-cta-secondary {
  background: var(--tos-bg);
  color: var(--tos-text);
  border: 1px solid var(--tos-border);
}

.tos-tier-cta-secondary:hover {
  border-color: var(--tos-primary-light);
  background: #eef2ff;
}

/* Tier Help Accordion */
.tos-tier-help {
  max-width: 700px;
  margin: 40px auto 0;
  text-align: center;
}

.tos-tier-help-toggle {
  background: none;
  border: 1px solid var(--tos-border);
  border-radius: 10px;
  padding: 14px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--tos-primary);
  cursor: pointer;
  font-family: var(--tos-font);
  transition: all 0.2s;
  min-height: 48px;
}

.tos-tier-help-toggle:hover {
  background: #eef2ff;
  border-color: var(--tos-primary-light);
}

.tos-tier-help-content {
  display: none;
  text-align: left;
  background: var(--tos-card);
  border: 1px solid var(--tos-border);
  border-radius: var(--tos-radius);
  padding: 24px;
  margin-top: 16px;
  font-size: 0.92rem;
  color: var(--tos-text-secondary);
  line-height: 1.7;
}

.tos-tier-help-content.tos-expanded {
  display: block;
}

.tos-personal-note {
  max-width: 700px;
  margin: 32px auto 0;
  text-align: center;
  font-size: 0.92rem;
  color: var(--tos-text-secondary);
  font-style: italic;
  line-height: 1.6;
}

/* ----------------------------------------------------------------
   C. Terms Scanner Index
   ---------------------------------------------------------------- */
.tos-scanners-section {
  padding: 80px 24px;
  background: var(--tos-bg-dark);
  color: white;
}

.tos-scanners-section .tos-section-header h2 {
  color: white;
}

.tos-scanners-section .tos-section-header p {
  color: rgba(255, 255, 255, 0.6);
}

.tos-scanner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.tos-scanner-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--tos-radius);
  padding: 20px;
  transition: all 0.25s;
  text-decoration: none;
  display: block;
  min-height: 44px;
}

.tos-scanner-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.tos-scanner-card-icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.tos-scanner-card-name {
  font-size: 1rem;
  font-weight: 600;
  color: white;
  margin-bottom: 4px;
}

.tos-scanner-card-count {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 6px;
}

.tos-scanner-card-samples {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.4;
}

.tos-view-all-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 32px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--tos-primary-light);
  text-decoration: none;
  padding: 10px 0;
  min-height: 44px;
}

.tos-view-all-link:hover {
  color: white;
}

/* ----------------------------------------------------------------
   D. Contract Generator Index
   ---------------------------------------------------------------- */
.tos-generators-section {
  padding: 80px 24px;
  background: white;
}

.tos-generator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.tos-generator-card {
  background: var(--tos-bg);
  border: 1px solid var(--tos-border);
  border-radius: var(--tos-radius);
  padding: 20px;
  text-decoration: none;
  display: block;
  transition: all 0.25s;
  min-height: 44px;
}

.tos-generator-card:hover {
  border-color: var(--tos-primary);
  background: white;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
  transform: translateY(-2px);
}

.tos-generator-card-icon {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.tos-generator-card-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--tos-text);
  margin-bottom: 4px;
}

.tos-generator-card-desc {
  font-size: 0.82rem;
  color: var(--tos-text-secondary);
  line-height: 1.4;
}

.tos-generator-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tos-primary);
}

/* ----------------------------------------------------------------
   E. FAQ Section
   ---------------------------------------------------------------- */
.tos-faq-section {
  padding: 80px 24px;
  background: var(--tos-bg);
}

.tos-faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tos-faq-item {
  background: var(--tos-card);
  border: 1px solid var(--tos-border);
  border-radius: var(--tos-radius);
  overflow: hidden;
  transition: border-color 0.2s;
}

.tos-faq-item.tos-faq-open {
  border-color: var(--tos-primary-light);
}

.tos-faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 20px;
  background: none;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--tos-text);
  text-align: left;
  cursor: pointer;
  font-family: var(--tos-font);
  line-height: 1.4;
  min-height: 54px;
  gap: 12px;
}

.tos-faq-question:hover {
  background: rgba(37, 99, 235, 0.03);
}

.tos-faq-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--tos-text-secondary);
  transition: transform 0.25s;
}

.tos-faq-open .tos-faq-chevron {
  transform: rotate(180deg);
}

.tos-faq-answer {
  display: none;
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: var(--tos-text-secondary);
  line-height: 1.7;
}

.tos-faq-open .tos-faq-answer {
  display: block;
}

/* ----------------------------------------------------------------
   F. Related Blog Posts
   ---------------------------------------------------------------- */
.tos-blog-section {
  padding: 80px 24px;
  background: white;
}

.tos-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.tos-blog-card {
  background: var(--tos-bg);
  border: 1px solid var(--tos-border);
  border-radius: var(--tos-radius);
  padding: 24px;
  text-decoration: none;
  display: block;
  transition: all 0.25s;
  min-height: 44px;
}

.tos-blog-card:hover {
  border-color: var(--tos-primary);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
  transform: translateY(-2px);
}

.tos-blog-card-date {
  font-size: 0.78rem;
  color: var(--tos-text-secondary);
  margin-bottom: 8px;
}

.tos-blog-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--tos-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.tos-blog-card-excerpt {
  font-size: 0.85rem;
  color: var(--tos-text-secondary);
  line-height: 1.5;
}

.tos-blog-card-read {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tos-primary);
}

/* ----------------------------------------------------------------
   G. Process Timeline
   ---------------------------------------------------------------- */
.tos-timeline-section {
  padding: 80px 24px;
  background: linear-gradient(180deg, #eef2ff 0%, white 100%);
}

.tos-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

/* Vertical line */
.tos-timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--tos-primary), var(--tos-accent));
  border-radius: 2px;
}

.tos-timeline-step {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding-bottom: 40px;
  position: relative;
}

.tos-timeline-step:last-child {
  padding-bottom: 0;
}

.tos-timeline-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--tos-primary), var(--tos-accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: white;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
  position: relative;
  z-index: 1;
}

.tos-timeline-content {
  flex: 1;
  padding-top: 8px;
}

.tos-timeline-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--tos-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.tos-timeline-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--tos-text);
  margin-bottom: 6px;
}

.tos-timeline-desc {
  font-size: 0.9rem;
  color: var(--tos-text-secondary);
  line-height: 1.5;
}

/* ----------------------------------------------------------------
   Responsive -- Tablet
   ---------------------------------------------------------------- */
@media (max-width: 900px) {
  .tos-tiers-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .tos-tier-card.tos-tier-featured {
    transform: none;
    order: -1;
  }

  .tos-tier-card.tos-tier-featured:hover {
    transform: translateY(-4px);
  }
}

/* ----------------------------------------------------------------
   Responsive -- Mobile
   ---------------------------------------------------------------- */
@media (max-width: 768px) {
  .tos-section-header h2 {
    font-size: 1.55rem;
  }

  .tos-section-header p {
    font-size: 0.95rem;
  }

  .tos-trust-row {
    gap: 10px;
  }

  .tos-trust-badge {
    font-size: 0.72rem;
    padding: 5px 10px;
  }

  .tos-scanner-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .tos-generator-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .tos-blog-grid {
    grid-template-columns: 1fr;
  }

  .tos-tier-price {
    font-size: 2rem;
  }

  /* Timeline stays vertical, already good for mobile */
  .tos-timeline::before {
    left: 22px;
  }

  .tos-timeline-icon {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }

  .tos-timeline-step {
    gap: 16px;
  }

  .tos-timeline-title {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .tos-scanner-grid {
    grid-template-columns: 1fr;
  }

  .tos-generator-grid {
    grid-template-columns: 1fr;
  }
}