/* Layout Styles - Responsive Container and Content
 * Mobile-first approach with min-width breakpoints
 * Uses CSS custom properties from variables.css
 */

/* Container - centers content with max-width */
.container {
  width: 100%;
  max-width: var(--container-max-width, 1200px);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding, 1.5rem);
  padding-right: var(--container-padding, 1.5rem);
}

/* Main content area - ensures footer stays at bottom */
main {
  min-height: calc(100vh - 200px);
  padding-top: 0;
  padding-bottom: var(--spacing-xl, 2rem);
}

/* Article body - optimal reading width (60-75 chars) */
.article-body {
  max-width: var(--content-width, 65ch);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding, 1.5rem);
  padding-right: var(--container-padding, 1.5rem);
}

/* Wide content - for figures, code blocks, tables */
.wide {
  max-width: var(--content-width-wide, 80ch);
  margin-left: auto;
  margin-right: auto;
}

/* Full width content - edge to edge */
.full-width {
  width: 100%;
  max-width: none;
}

/* Section spacing */
.section {
  margin-bottom: var(--spacing-section, 4rem);
}

/* Prose container - centered readable content */
.prose {
  max-width: var(--content-width, 65ch);
  margin-left: auto;
  margin-right: auto;
}

/* Stack layout - vertical spacing between children */
.stack > * + * {
  margin-top: var(--spacing-md, 1rem);
}

.stack-lg > * + * {
  margin-top: var(--spacing-lg, 1.5rem);
}

/* Tablet breakpoint (768px+) */
@media (min-width: 768px) {
  :root {
    --container-padding: var(--spacing-xl, 2rem);
  }

  main {
    padding-top: 0;
    padding-bottom: var(--spacing-2xl, 3rem);
  }

  .article-body {
    padding-left: 0;
    padding-right: 0;
  }
}

/* Desktop breakpoint (1200px+) */
@media (min-width: 1200px) {
  :root {
    /* Reduced h1 for better proportion - Distill-style */
    --font-size-h1: 2.25rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.375rem;
  }

  main {
    padding-top: 0;
    padding-bottom: var(--spacing-3xl, 4rem);
  }

  /* Page-level grid: sidebar + main content */
  .page-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    max-width: none;
    margin: 0;
  }
}

/* Wide screen breakpoint (1400px+) */
/* Prepares layout for future margin notes - Distill's approach */
/* Content stays centered with room for margin columns on sides */
@media (min-width: 1400px) {
  .container {
    max-width: 1400px;
  }

  /* Article layout: centered content with margin room */
  .article {
    display: grid;
    grid-template-columns: 1fr minmax(auto, var(--content-width-wide, 80ch)) 1fr;
    gap: 0;
  }

  .article > * {
    grid-column: 2;
  }

  .article-header {
    grid-column: 2;
  }

  .article-body {
    position: relative;
    overflow: visible;
  }
}