@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/assets/fonts/JetBrainsMono-Regular.woff2) format("woff2");
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/assets/fonts/JetBrainsMono-Medium.woff2) format("woff2");
}

@layer globals, castd, theme;

@layer theme {

  /* ============================================================
     THEME — design tokens, color scheme
     ============================================================ */

  :root {
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
      Arial, sans-serif;
    --font-mono: "JetBrains Mono", monospace;

    --space-1: 0.75rem;
    --space-2: 1.5rem;
    --space-3: 3rem;

    --radius-1: 4px;
    --radius-2: 8px;

    --color-bg: #fafafa;
    --color-text: #1a1a1a;
    --color-muted: #555;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-border: rgba(128, 128, 128, 0.15);
    --color-chip-bg: #f0f0f0;
    --color-code-inline-text: #9a5b0f;
    --color-code-block-bg: #f3f3f3;
    --color-code-block-text: #1f2937;
    --color-code-line-number: rgba(26, 26, 26, 0.38);
    --color-code-line-hover: rgba(37, 99, 235, 0.08);

    --shadow-s: 0 1px 2px rgba(0, 0, 0, 0.06);
    --max-width: 45rem;
    --border: 1px solid var(--color-border);
  }

  @media (prefers-color-scheme: dark) {
    :root {
      --color-bg: #0a0a0a;
      --color-text: #e5e5e5;
      --color-muted: #888;
      --color-accent: #3b82f6;
      --color-accent-hover: #60a5fa;
      --color-border: rgba(255, 255, 255, 0.1);
      --color-chip-bg: #1a1a1a;
      --color-code-inline-text: #d89a4f;
      --color-code-block-bg: #151515;
      --color-code-block-text: #d7d7d7;
      --color-code-line-number: rgba(229, 229, 229, 0.32);
      --color-code-line-hover: rgba(255, 255, 255, 0.06);
      --shadow-s: 0 1px 2px rgba(0, 0, 0, 0.35);
    }
  }

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

  /* ============================================================
     BASE — element resets and defaults
     ============================================================ */

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  * {
    margin: 0;
    padding: 0;
  }

  html {
    font-size: 16px;
    color-scheme: light dark;
    -webkit-text-size-adjust: 100%;
  }

  body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    text-rendering: optimizeLegibility;
    overflow-wrap: break-word;
  }

  /* ============================================================
     LAYOUT — major page structure
     ============================================================ */

  .as-page {
    width: min(100%, var(--max-width));
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-3) var(--space-2);
    min-width: 0;
  }

  .as-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 0;
  }

  .as-section {
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  /* ============================================================
     MODULES — reusable components
     ============================================================ */

  /* --- as-mono (utility text) --- */
  .as-mono {
    font-family: var(--font-mono);
  }

  /* --- as-title --- */
  .as-title {
    font-weight: 500;
    letter-spacing: 0;
  }

  .as-title.like-hero {
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: var(--space-1);
    letter-spacing: 0;
    line-height: 1.1;
  }

  .as-title.like-section,
  .as-title.like-subsection {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
    margin-bottom: var(--space-1);
  }

  .as-title.like-section {
    margin-bottom: var(--space-2);
  }

  /* --- as-value --- */
  .as-value {
    font-size: 1.15rem;
    color: var(--color-text);
    margin-bottom: var(--space-2);
    line-height: 1.5;
    max-width: 100%;
  }

  /* --- as-meta --- */
  .as-meta {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-bottom: var(--space-3);
  }

  /* --- as-btn --- */
  .as-btn {
    display: inline-block;
    width: fit-content;
    max-width: 100%;
    padding: 0.65rem 1.25rem;
    text-decoration: none;
    border-radius: var(--radius-1);
    font-weight: 500;
    font-size: 0.9rem;
    text-align: center;
    overflow-wrap: anywhere;
    transition: border-color 0.2s ease, background-color 0.2s ease,
      color 0.2s ease, transform 0.2s ease;
  }

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

  .as-btn.like-primary {
    background-color: var(--color-accent);
    color: #fff;
    box-shadow: var(--shadow-s);
  }

  .as-btn.like-primary:hover {
    background-color: var(--color-accent-hover);
    color: #fff;
    transform: translateY(-1px);
  }

  .as-btn.like-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
  }

  .as-btn.like-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
  }

  /* --- as-skip-link --- */
  .as-skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-2);
    padding: 0.5rem 1rem;
    background-color: var(--color-accent);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-1);
    font-size: 0.85rem;
    z-index: 100;
  }

  .as-skip-link:focus {
    top: var(--space-1);
  }

  /* --- as-blog-post --- */
  .as-blog-post {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .as-blog-post > * {
    min-width: 0;
  }

  .as-blog-post header {
    display: block;
  }

  .as-blog-post h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.2;
    margin-bottom: var(--space-1);
  }

  .as-blog-post .as-meta {
    margin-bottom: var(--space-3);
  }

  .as-blog-post .blog-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-size: 1rem;
    line-height: 1.75;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .as-blog-post .blog-body h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: var(--space-1);
  }

  .as-blog-post .blog-body h3 {
    font-size: 1.05rem;
    font-weight: 600;
  }

  .as-blog-post .blog-body p {
    color: var(--color-text);
  }

  .as-blog-post .blog-body code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background-color: var(--color-chip-bg);
    color: var(--color-code-inline-text);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-1);
    overflow-wrap: anywhere;
  }

  .as-blog-post .blog-body pre {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    background-color: var(--color-code-block-bg);
    color: var(--color-code-block-text);
    padding: 0;
    border: var(--border);
    border-radius: var(--radius-2);
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    counter-reset: line;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.5;
    white-space: pre;
  }

  .as-blog-post .blog-body img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-2);
  }

  .as-blog-post .blog-body pre code {
    display: grid;
    min-width: max-content;
    background: none;
    color: inherit;
    padding: var(--space-2) 0;
    border-radius: 0;
    font-size: inherit;
    overflow-wrap: normal;
    white-space: pre;
  }

  .as-blog-post .blog-body pre code span[data-line] {
    display: grid;
    grid-template-columns: 3.25rem minmax(0, 1fr);
    gap: 1rem;
    min-height: 1.5em;
    padding-right: var(--space-2);
  }

  .as-blog-post .blog-body pre code span[data-line]::before {
    content: counter(line);
    counter-increment: line;
    color: var(--color-code-line-number);
    padding-left: var(--space-1);
    text-align: right;
    user-select: none;
  }

  .as-blog-post .blog-body pre code span[data-line]:hover {
    background-color: var(--color-code-line-hover);
  }

  .as-blog-post .blog-body ul,
  .as-blog-post .blog-body ol {
    padding-left: var(--space-2);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--color-text);
  }

  .as-blog-post .blog-body blockquote {
    font-style: italic;
    color: var(--color-muted);
    padding-left: var(--space-2);
    border-left: 2px solid var(--color-border);
  }

  /* --- as-code-block (wraps <pre> with copy button) --- */
  .as-code-block {
    position: relative;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .as-code-block > pre > code {
    padding-top: calc(var(--space-2) + 1rem);
  }

  .as-code-block .copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: auto;
    height: 1.75rem;
    min-height: 0;
    display: inline-flex;
    align-items: center;
    gap: 0;
    padding: 0 0.4rem;
    margin: 0;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0.02em;
    color: var(--color-muted);
    background-color: var(--color-code-block-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-1);
    cursor: pointer;
    opacity: 0.6;
    box-shadow: 0 0 0.5rem 0.25rem var(--color-code-block-bg);
    transition:
      opacity 0.15s ease,
      color 0.15s ease,
      gap 0.15s ease,
      background-color 0.15s ease,
      border-color 0.15s ease;
    z-index: 1;
  }

  .as-code-block .copy-btn:hover,
  .as-code-block:focus-within .copy-btn {
    opacity: 1;
    color: var(--color-text);
    background-color: var(--color-chip-bg);
    border-color: var(--color-border);
    filter: none;
  }

  .as-code-block .copy-btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  .as-code-block .copy-icon {
    display: inline-flex;
    align-items: center;
  }

  .as-code-block .copy-label {
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    transition: max-width 0.18s ease;
  }

  /* ============================================================
     STATE — dynamic conditions (is-*)
     ============================================================ */

  .as-code-block .copy-btn.is-copied {
    opacity: 1;
    color: var(--color-accent);
    background-color: var(--color-chip-bg);
    border-color: var(--color-accent);
    gap: 0.35rem;
  }

  .as-code-block .copy-btn.is-copied .copy-label {
    max-width: 4rem;
  }

  /* ============================================================
     RESPONSIVE
     ============================================================ */

  @media (hover: none) {
    .as-code-block .copy-btn {
      opacity: 0.85;
    }
  }

  @media (max-width: 640px) {
    :root {
      --space-1: 0.625rem;
      --space-2: 1rem;
      --space-3: 2rem;
    }

    .as-page {
      padding: var(--space-2);
    }

    .as-stack {
      gap: var(--space-2);
    }

    .as-title.like-hero {
      font-size: 2.1rem;
    }

    .as-value {
      font-size: 1rem;
      line-height: 1.55;
    }

    .as-blog-post h1 {
      font-size: 1.55rem;
    }

    .as-blog-post .blog-body {
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .as-blog-post .blog-body h2 {
      font-size: 1.15rem;
    }

    .as-blog-post .blog-body pre {
      margin-inline: calc(var(--space-2) * -1);
      width: calc(100% + (var(--space-2) * 2));
      max-width: none;
      border-radius: 0;
      font-size: 0.78rem;
    }

    .as-blog-post .blog-body pre code span[data-line] {
      grid-template-columns: 2.75rem minmax(0, 1fr);
      gap: 0.75rem;
      padding-right: var(--space-2);
    }

    .as-blog-post .blog-body ul,
    .as-blog-post .blog-body ol,
    .as-blog-post .blog-body blockquote {
      padding-left: var(--space-2);
    }
  }

  @media (max-width: 420px) {
    .as-page {
      padding-inline: 0.875rem;
    }

    .as-title.like-hero {
      font-size: 1.9rem;
    }

    .as-blog-post h1 {
      font-size: 1.4rem;
    }

    .as-blog-post .blog-body pre {
      margin-inline: -0.875rem;
      width: calc(100% + 1.75rem);
    }

    .as-blog-post .blog-body pre code span[data-line] {
      grid-template-columns: 2.5rem minmax(0, 1fr);
      padding-right: 0.875rem;
    }
  }

  /* ============================================================
     PRINT
     ============================================================ */

  @media print {

    .as-contact-cta,
    .as-skip-link,
    nav {
      display: none;
    }

    body {
      color: #000;
      background: #fff;
    }

    .as-page {
      padding: 0;
      max-width: 100%;
    }

    .stack-chip {
      border: 1px solid #ccc;
      background: none;
    }
  }

}
/* end @layer theme */