/* ==========================================================================
   GoliathPrep SEO Pages — Question & Hub Page Styles
   Extends the main design system for interview question content pages.
   ========================================================================== */

/* --- Page Wrapper --- */
.seo-page-wrapper {
  padding-top: 6rem;
  padding-bottom: var(--section-py);
  min-height: 80vh;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

.breadcrumbs a:hover {
  color: var(--color-primary-400);
}

.breadcrumbs .separator {
  color: var(--text-tertiary);
  user-select: none;
}

.breadcrumbs .current {
  color: var(--text-secondary);
}

/* ==========================================================================
   Question Page
   ========================================================================== */

.seo-question-page {
  max-width: 48rem;
  margin: 0 auto;
}

/* Header */
.question-header {
  margin-bottom: 2.5rem;
}

.question-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.question-header h1 {
  font-size: clamp(1.75rem, 3vw + 0.5rem, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

/* Difficulty badges */
.difficulty {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.difficulty--entrylevel {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success-400);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.difficulty--midlevel {
  background: rgba(147, 51, 234, 0.15);
  color: var(--color-primary-400);
  border: 1px solid rgba(147, 51, 234, 0.25);
}

.difficulty--senior {
  background: rgba(217, 70, 239, 0.15);
  color: var(--color-accent-400);
  border: 1px solid rgba(217, 70, 239, 0.25);
}

.category {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.read-time {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* Sections */
.seo-question-page section {
  margin-bottom: 2.5rem;
}

.seo-question-page h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.seo-question-page p {
  color: var(--text-secondary);
  line-height: 1.75;
  font-size: 1.0625rem;
}

/* The interview question blockquote */
.question-block {
  background: var(--surface-elevated);
  border-left: 4px solid var(--color-primary-500);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 0;
}

.question-block p {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: 500;
  font-style: italic;
}

/* Key points */
.key-points ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.key-points li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1rem;
}

.key-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-primary);
}

/* Code example */
.code-example pre {
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border-strong);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.code-example code {
  font-family: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-primary);
  white-space: pre;
}

/* Interviewer insight */
.interviewer-insight {
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem 2rem;
}

.interviewer-insight h2 {
  font-size: 1.25rem;
}

/* CTA Section */
.cta-section {
  margin-top: 3rem;
  margin-bottom: 3rem;
}

.cta-card {
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border-strong);
  border-radius: var(--radius-xl);
  padding: 2rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.cta-card h3 {
  font-size: 1.375rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.cta-card p {
  max-width: 32rem;
  margin: 0 auto 1.5rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Related questions */
.related-questions {
  margin-top: 3rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1rem;
}

.related-card {
  display: block;
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: border-color var(--transition-base), transform var(--transition-base);
  text-decoration: none;
}

.related-card:hover {
  border-color: var(--color-primary-500);
  transform: translateY(-2px);
}

.related-card h4 {
  font-size: 0.9375rem;
  margin: 0.5rem 0 0.5rem;
  color: var(--text-primary);
  line-height: 1.3;
}

.related-difficulty {
  font-size: 0.6875rem;
}

.related-category {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

/* Back to hub */
.back-to-hub {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface-border);
}

.back-to-hub a {
  color: var(--color-primary-400);
  font-weight: 500;
  font-size: 0.9375rem;
}

.back-to-hub a:hover {
  color: var(--color-primary-300);
}

/* ==========================================================================
   Hub Page
   ========================================================================== */

.seo-hub-page {
  max-width: 72rem;
  margin: 0 auto;
}

.hub-header {
  margin-bottom: 2rem;
}

.hub-header h1 {
  font-size: clamp(2rem, 4vw + 0.5rem, 3rem);
  margin-bottom: 1rem;
}

.hub-intro {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.75;
  max-width: 48rem;
}

.hub-stats {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* CTA Banner */
.hub-cta-banner {
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border-strong);
  border-radius: var(--radius-xl);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.hub-cta-banner p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 0;
}

.hub-cta-banner strong {
  color: var(--text-primary);
}

/* Hub layout */
.hub-layout {
  display: grid;
  grid-template-columns: 1fr 16rem;
  gap: 3rem;
  align-items: start;
}

/* Category sections */
.category-section {
  margin-bottom: 2.5rem;
}

.category-section h2 {
  font-size: 1.375rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* Question cards */
.question-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.question-card {
  display: block;
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.question-card:hover {
  border-color: var(--color-primary-500);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-primary);
}

.question-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.question-card h3 {
  font-size: 1.0625rem;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
  line-height: 1.3;
}

.question-preview {
  color: var(--text-tertiary);
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0;
}

/* Sidebar */
.hub-sidebar {
  position: sticky;
  top: 6rem;
}

.sidebar-section {
  margin-bottom: 2rem;
}

.hub-sidebar h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.topic-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.topic-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background var(--transition-base), color var(--transition-base);
}

.topic-link:hover {
  background: var(--surface-elevated);
  color: var(--text-primary);
}

.topic-link.active {
  background: rgba(147, 51, 234, 0.1);
  color: var(--color-primary-400);
  font-weight: 500;
}

.topic-count {
  background: var(--surface-elevated);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.topic-link.active .topic-count {
  background: rgba(147, 51, 234, 0.15);
  color: var(--color-primary-400);
}

/* Sidebar CTA */
.sidebar-cta {
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  text-align: center;
}

.sidebar-cta h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.sidebar-cta p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  .hub-layout {
    grid-template-columns: 1fr;
  }

  .hub-sidebar {
    position: static;
    order: -1;
  }

  .topic-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .topic-link {
    padding: 0.375rem 0.75rem;
    background: var(--surface-elevated);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
  }

  .hub-cta-banner {
    flex-direction: column;
    text-align: center;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .cta-card {
    padding: 1.5rem;
  }

  .seo-question-page {
    padding-left: 0;
    padding-right: 0;
  }
}