/* ============================================
   Global styles — uses CSS vars from theme config.
   All token values live in src/config/theme.ts.
   ============================================ */

@layer reset, base, layout, components, utilities;

/* --- Reset --- */
@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
  }

  body {
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  img,
  picture,
  video,
  canvas,
  svg {
    display: block;
    max-width: 100%;
  }

  input,
  button,
  textarea,
  select {
    font: inherit;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  ul,
  ol {
    list-style: none;
  }
}

/* --- Base --- */
@layer base {
  body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text);
    background-color: var(--bg);
    transition: color var(--duration-normal) var(--ease-out),
      background-color var(--duration-normal) var(--ease-out);
  }

  h1,
  h2,
  h3,
  h4 {
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    font-weight: 700;
  }

  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl); }
  h4 { font-size: var(--text-lg); }

  p + p {
    margin-top: var(--space-4);
  }

  code {
    font-family: var(--font-mono);
    font-size: 0.9em;
  }

  :not(pre) > code {
    padding: 0.15em 0.35em;
    border-radius: var(--radius-sm);
    background-color: var(--bg-surface-hover);
  }

  pre {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
  }

  a:not(.nav-link) {
    color: var(--accent);
    transition: color var(--duration-fast) var(--ease-out);
  }

  a:not(.nav-link):hover {
    color: var(--accent-hover);
  }

  ::selection {
    background-color: var(--accent);
    color: white;
  }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
}

/* --- Layout --- */
@layer layout {
  .page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
  }

  .main-content {
    flex: 1;
    width: 100%;
    max-width: var(--max-w-page);
    margin-inline: auto;
    padding-inline: var(--space-6);
    padding-block: var(--space-12);
  }

  .prose {
    max-width: var(--max-w-prose);
  }

  .section {
    padding-block: var(--space-16);
  }

  .section + .section {
    border-top: 1px solid var(--border);
  }

  .bento {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-4);
  }

  .bento-full   { grid-column: span 12; }
  .bento-8      { grid-column: span 8; }
  .bento-6      { grid-column: span 6; }
  .bento-4      { grid-column: span 4; }

  @media (max-width: 900px) {
    .bento-8,
    .bento-6,
    .bento-4 {
      grid-column: span 12;
    }
  }

  @media (min-width: 901px) and (max-width: 1100px) {
    .bento-8 { grid-column: span 12; }
    .bento-4 { grid-column: span 6; }
  }
}

/* --- Components --- */
@layer components {
  .badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    background-color: var(--accent-subtle);
    color: var(--accent);
    letter-spacing: 0.01em;
  }

  .card {
    padding: var(--space-6);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background-color: var(--bg-surface);
    box-shadow: var(--shadow);
    transition: box-shadow var(--duration-normal) var(--ease-out),
      border-color var(--duration-normal) var(--ease-out);
  }

  .card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-strong);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background-color: var(--bg-surface);
    color: var(--text);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
  }

  .btn:hover {
    background-color: var(--bg-surface-hover);
    border-color: var(--border-strong);
  }

  .btn-accent {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
  }

  .btn-accent:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
  }

  .widget-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
  }

  .widget-title svg {
    color: var(--accent);
  }
}

/* --- Prose (blog post content) --- */
@layer components {
  .prose {
    line-height: var(--leading-relaxed);
  }

  .prose h1,
  .prose h2,
  .prose h3,
  .prose h4 {
    margin-top: 1.8em;
    margin-bottom: 0.6em;
  }

  .prose h1:first-child,
  .prose h2:first-child {
    margin-top: 0;
  }

  .prose p {
    margin-bottom: 1.2em;
  }

  .prose ul,
  .prose ol {
    list-style: revert;
    padding-left: 1.8em;
    margin-bottom: 1.2em;
  }

  .prose li {
    margin-bottom: 0.3em;
  }

  .prose li > ul,
  .prose li > ol {
    margin-top: 0.3em;
    margin-bottom: 0;
  }

  .prose blockquote {
    border-left: 3px solid var(--accent);
    padding-left: var(--space-4);
    margin-block: 1.2em;
    color: var(--text-secondary);
    font-style: italic;
  }

  .prose img {
    border-radius: var(--radius-md);
    margin-block: 1.5em;
  }

  .prose img.img-left {
    float: left;
    max-width: 45%;
    margin: 0 1.5em 1em 0;
  }

  .prose img.img-right {
    float: right;
    max-width: 45%;
    margin: 0 0 1em 1.5em;
  }

  @media (max-width: 600px) {
    .prose img.img-left,
    .prose img.img-right {
      float: none;
      max-width: 100%;
      margin: 1.5em 0;
    }
  }

  .prose hr {
    border: none;
    border-top: 1px solid var(--border);
    margin-block: 2em;
  }

  .prose table {
    width: 100%;
    border-collapse: collapse;
    margin-block: 1.5em;
    font-size: var(--text-sm);
  }

  .prose th,
  .prose td {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    text-align: left;
  }

  .prose th {
    background-color: var(--bg-surface);
    font-weight: 600;
  }

  .prose a {
    text-decoration: underline;
    text-underline-offset: 2px;
  }

  .prose .heading-anchor {
    margin-left: 0.3em;
    color: var(--border-strong);
    text-decoration: none;
    font-weight: 400;
    opacity: 0;
    transition: opacity var(--duration-fast) var(--ease-out);
  }

  .prose h1:hover .heading-anchor,
  .prose h2:hover .heading-anchor,
  .prose h3:hover .heading-anchor,
  .prose h4:hover .heading-anchor,
  .prose .heading-anchor:focus {
    opacity: 1;
    color: var(--accent);
  }

  .prose pre {
    margin-block: 1.5em;
  }

  .prose .clearfix::after {
    content: "";
    display: table;
    clear: both;
  }
}

/* --- Utilities --- */
@layer utilities {
  .text-muted { color: var(--text-muted); }
  .text-secondary { color: var(--text-secondary); }
  .font-mono { font-family: var(--font-mono); }
  .text-sm { font-size: var(--text-sm); }
  .text-xs { font-size: var(--text-xs); }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }

  .skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 9999;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 600;
    color: white;
    background: var(--accent);
    border-radius: 0;
    text-decoration: none;
    transition: top var(--duration-fast) var(--ease-out);
  }

  .skip-link:focus {
    top: 0;
  }
}