/*
 * Component: Layout
 *
 * Main layout components for content containers, page headers,
 * and responsive grid systems. Based on content-aware design principles.
 */

.page-header {
  text-align: center;
  margin-block-end: var(--space-2xl);
}

.page-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--text);
  margin-block-end: var(--space-sm);
  text-align: center;
  /* Ensure good line height for large text */
  line-height: 1.2;
}

.page-subtitle {
  color: var(--text-light);
  font-size: var(--text-lg);
  margin-block-end: var(--space-sm);
  /* Optimal line length for readability */
  max-inline-size: 60ch;
  margin-inline: auto;
  text-align: center;
}

/* Page Header Mobile Enhancements - From mobile enhancements */
.page-header {
  /* Mobile: minimal padding - container now has 24px top */
  padding: 0 var(--space-md) var(--space-md);
  text-align: center;
  margin-bottom: 0;
}

/* Desktop: remove padding as container handles it */
@media (min-width: 48rem) {
  .page-header {
    padding: 0;
    margin-bottom: var(--space-2xl);
  }
}

/* Safe area support for page headers */
@supports (padding: env(safe-area-inset-left)) {
  .page-header {
    padding-left: max(var(--space-lg), env(safe-area-inset-left));
    padding-right: max(var(--space-lg), env(safe-area-inset-right));
  }
}

/* Back Link Navigation */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-lighter);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--transition-standard);
  margin-bottom: 0;
  background-color: var(--bg);
}

.back-link:hover {
  color: var(--accent);
}

/* Content Width Optimization - Powell's Recommendations */
/* Optimal reading width for prose content */
.prose,
.content-text,
.article-content {
  max-inline-size: min(70ch, 100% - 4rem);
  margin-inline: auto;
}

.prose-narrow {
  max-inline-size: min(60ch, 100% - 4rem);
  margin-inline: auto;
}

.prose-wide {
  max-inline-size: min(85ch, 100% - 4rem);
  margin-inline: auto;
}

/* Exceptions for full-width components */
.full-width,
.image-gallery,
.data-table,
.chart-container {
  max-inline-size: none;
}