/* ============================================
   ProofNudge — Content Pages Shared Styles
   ============================================ */

/* --- Page Hero --- */
.page-hero {
  padding: 140px 0 60px;
  background: var(--color-surface-alt);
  position: relative; overflow: hidden;
}
.page-hero::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: var(--color-border-light);
}
.page-breadcrumb {
  display: flex; align-items: center; gap: 8px; font-size: 0.8125rem;
  color: var(--color-text-tertiary); margin-bottom: 20px;
}
.page-breadcrumb a { color: var(--color-text-secondary); transition: color 0.15s; }
.page-breadcrumb a:hover { color: var(--color-blue); }
.page-breadcrumb .bc-sep { opacity: 0.4; }
.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem); font-weight: 700;
  line-height: 1.12; letter-spacing: -0.025em; max-width: 720px;
}
.page-hero h1 em { font-family: var(--font-serif); font-style: italic; font-weight: 500; }
.page-hero-sub {
  font-size: 1.125rem; color: var(--color-text-secondary);
  max-width: 600px; margin-top: 16px; line-height: 1.65;
}

/* --- Content Sections --- */
.content-section { padding: 80px 0; }
.content-section:nth-child(even) { background: var(--color-surface-alt); }
.content-section-header { margin-bottom: 40px; }
.content-section-header h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem); font-weight: 700;
  line-height: 1.2; letter-spacing: -0.02em;
}
.content-section-header h2 em { font-family: var(--font-serif); font-style: italic; font-weight: 500; }
.content-section-header p {
  font-size: 1.0625rem; color: var(--color-text-secondary);
  margin-top: 10px; max-width: 600px; line-height: 1.6;
}

/* --- Two Column Layout --- */
.content-two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.content-two-col.reverse { direction: rtl; }
.content-two-col.reverse > * { direction: ltr; }

/* --- Feature Cards Grid --- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 28px;
  transition: box-shadow 0.3s, transform 0.3s;
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.feature-card-icon {
  width: 44px; height: 44px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feature-card h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 6px; }
.feature-card p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.55; }

/* --- Illustration Containers --- */
.page-illustration {
  background: var(--color-surface-alt); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: 32px; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.page-illustration svg { width: 100%; height: auto; max-width: 420px; }

/* --- Inline Demo (mockup message) --- */
.demo-message {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: var(--radius-sm);
  font-size: 0.8125rem; font-weight: 500;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.demo-message svg { width: 14px; height: 14px; flex-shrink: 0; }
.demo-message-blue { background: #e8f4fd; color: #0e7cb8; }
.demo-message-green { background: #e6f7ee; color: #158049; }
.demo-message-red { background: #fde8e8; color: #d03a2a; }
.demo-message-purple { background: #f0ebf7; color: #6447a0; }
.demo-message-orange { background: #fef3e2; color: #b86e10; }

/* --- Comparison Table --- */
.compare-table { width: 100%; border-collapse: collapse; margin-top: 24px; }
.compare-table th, .compare-table td {
  padding: 14px 20px; text-align: left; border-bottom: 1px solid var(--color-border-light);
  font-size: 0.875rem;
}
.compare-table th {
  font-weight: 600; font-size: 0.8125rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--color-text-tertiary);
  background: var(--color-surface-alt);
}
.compare-table td:first-child { font-weight: 500; }
.compare-table .check, .compare-table .cross {
  display: inline-flex; align-items: center; vertical-align: middle; margin-right: 6px;
}
.compare-table .check { color: var(--color-green); }
.compare-table .cross { color: var(--color-text-tertiary); opacity: 0.4; }
.compare-table .highlight-col { background: rgba(13,136,241,0.03); }
.compare-table thead th.highlight-col {
  background: var(--color-blue); color: #fff; border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

/* --- Help Article Styles --- */
.article-body { max-width: 720px; }
.article-body h2 {
  font-size: 1.5rem; font-weight: 700; margin: 48px 0 16px;
  letter-spacing: -0.01em;
}
.article-body h3 { font-size: 1.125rem; font-weight: 600; margin: 32px 0 12px; }
.article-body p { color: var(--color-text-secondary); line-height: 1.7; margin-bottom: 16px; }
.article-body ul, .article-body ol {
  color: var(--color-text-secondary); line-height: 1.7;
  margin-bottom: 16px; padding-left: 24px;
}
.article-body li { margin-bottom: 8px; }
.article-body code {
  font-size: 0.8125em; background: var(--color-surface-alt);
  padding: 2px 6px; border-radius: 4px; color: var(--color-blue);
}
.article-body .callout {
  background: #e8f4fd; border-left: 3px solid var(--color-blue);
  padding: 16px 20px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0; font-size: 0.9375rem; color: var(--color-text);
}

/* --- Help Hub Link Cards --- */
.help-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.help-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 24px;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-decoration: none; color: inherit;
}
.help-card:hover { border-color: var(--color-blue); box-shadow: var(--shadow-md); }
.help-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.help-card p { font-size: 0.8125rem; color: var(--color-text-secondary); line-height: 1.5; }

/* --- Use Case Cards --- */
.usecase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.usecase-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
  text-decoration: none; color: inherit;
}
.usecase-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.usecase-card-img {
  height: 180px; display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.usecase-card-body { padding: 24px; }
.usecase-card-body h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 6px; }
.usecase-card-body p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.5; }

/* --- Page CTA --- */
.page-cta {
  padding: 80px 0;
  text-align: center;
}
.page-cta h2 {
  font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700;
  margin-bottom: 12px; letter-spacing: -0.02em;
}
.page-cta h2 em { font-family: var(--font-serif); font-style: italic; font-weight: 500; }
.page-cta p {
  font-size: 1rem; color: var(--color-text-secondary);
  margin-bottom: 24px; max-width: 480px; margin-left: auto; margin-right: auto;
}

/* --- Variable Tag --- */
.var-tag {
  display: inline-block; font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.75rem; background: var(--color-surface-alt);
  border: 1px solid var(--color-border); padding: 2px 8px;
  border-radius: 4px; color: var(--color-blue); font-weight: 500;
}

/* --- Step List --- */
.steps { display: flex; flex-direction: column; gap: 24px; counter-reset: step; }
.step {
  display: flex; gap: 20px; counter-increment: step;
}
.step::before {
  content: counter(step); flex-shrink: 0;
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-blue-light), var(--color-blue));
  color: #fff; font-weight: 700; font-size: 0.875rem;
  display: flex; align-items: center; justify-content: center;
}
.step-content h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.step-content p { font-size: 0.875rem; color: var(--color-text-secondary); line-height: 1.55; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .content-two-col { grid-template-columns: 1fr; gap: 40px; }
  .content-two-col.reverse { direction: ltr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .help-grid { grid-template-columns: repeat(2, 1fr); }
  .usecase-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .page-hero { padding: 110px 0 48px; }
  .feature-grid { grid-template-columns: 1fr; }
  .help-grid { grid-template-columns: 1fr; }
  .usecase-grid { grid-template-columns: 1fr; }
  .compare-table { font-size: 0.8125rem; }
  .compare-table th, .compare-table td { padding: 10px 12px; }
}