/* ==========================================================================
   Base: reset, typography, layout, buttons, chips, prose, code, callouts
   ========================================================================== */

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

html {
  min-height: 100%;
  background: var(--bg);
  scroll-behavior: auto;
  scroll-padding-top: calc(var(--header-h) + 24px);
  -webkit-text-size-adjust: 100%;
  scrollbar-color: var(--line-strong) transparent;
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.7 var(--font-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }
a { color: inherit; text-underline-offset: 4px; }
img, svg { max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
::selection { background: var(--mark); color: var(--ink); }

/* ---------- Layout ---------- */
.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 300;
  background: var(--btn-bg); color: var(--btn-ink);
  padding: 10px 14px; border-radius: var(--radius-s);
  font: 600 0.9rem var(--font-text); text-decoration: none;
}
.skip:focus { top: 12px; }

.section { padding-block: clamp(3rem, 7vw, 5rem); }
.section-flush { padding-top: 0; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: clamp(1.5rem, 3vw, 2.25rem); }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.section-head p { color: var(--muted); max-width: 36ch; font-size: 0.95rem; }

.eyebrow {
  display: inline-block;
  font: 500 0.78rem/1 var(--font-mono);
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent-text);
}

/* ---------- Buttons ---------- */
.button, .button-quiet {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px; padding: 0 18px;
  border-radius: 10px;
  font: 500 0.92rem/1 var(--font-text);
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.button { background: var(--btn-bg); color: var(--btn-ink); box-shadow: 0 1px 0 rgba(255, 255, 255, 0.18) inset, 0 6px 18px -8px rgba(0, 0, 0, 0.45); }
.button:hover { background: var(--btn-hover); transform: translateY(-1px); }
.button:active, .button-quiet:active { transform: translateY(0); }
.button-quiet { background: var(--btn-quiet-bg); color: var(--ink); border-color: var(--line); }
.button-quiet:hover { background: var(--btn-quiet-hover); }

.text-link { color: var(--ink); text-decoration: none; font-weight: 500; }
.text-link:hover { color: var(--accent-text); }

/* ---------- Chips & tags ---------- */
.chip, .badge { border-radius: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 10px 4px 9px;
  background: var(--tc-bg, var(--surface-3));
  color: var(--tc, var(--ink-soft));
  font: 500 0.78rem/1.2 var(--font-text);
  text-decoration: none;
}
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--tc-line, var(--muted)); }

/* ---------- Standard page ---------- */
.page { padding-top: clamp(2rem, 4vw, 3.25rem); padding-bottom: 4rem; }
.page-head { margin-bottom: 1.5rem; }
.page-head h1 { font-size: clamp(2.2rem, 4.8vw, 3.4rem); letter-spacing: -0.04em; }
.page-head .lead, .lead {
  color: var(--muted); max-width: 62ch;
  font: 400 clamp(1rem, 1.8vw, 1.15rem)/1.6 var(--font-text);
  margin-top: 0.75rem;
}
.updated { margin-top: 0.75rem; font: 400 0.85rem var(--font-text); color: var(--muted); }
.page .prose { margin-top: 0; }
.page-narrow .prose { max-width: 46rem; }
.page-wide .page-head { max-width: 58rem; }

.page-actions, .lost-links {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
}
.empty {
  padding: 3rem 1.5rem; border: 1px dashed var(--line-strong);
  border-radius: var(--radius-m); text-align: center;
  color: var(--muted); background: var(--surface); margin-block: 1.5rem;
}

/* ---------- Prose ---------- */
.prose { color: var(--prose); font-size: 1.0625rem; line-height: 1.85; }
.prose h1, .prose h2, .prose h3, .prose h4 { color: var(--ink); margin-top: 2.3em; margin-bottom: 0.6em; }
.prose > :first-child { margin-top: 0; }
.prose h2 { font-size: clamp(1.6rem, 3vw, 2rem); letter-spacing: -0.035em; padding-bottom: 0.45em; border-bottom: 1px solid var(--line); }
.prose h3 { font-size: 1.3rem; }
.prose h4 { font-size: 1.05rem; }
.prose p { margin-bottom: 1.3em; }
.prose ul, .prose ol { margin: 0.4em 0 1.4em; padding-left: 1.5em; }
.prose li { margin-bottom: 0.45em; }
.prose li::marker { color: var(--muted); }
.prose strong, .prose b { color: var(--ink); font-weight: 600; }
.prose a {
  color: var(--ink); font-weight: 600;
  text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 3px;
  text-decoration-color: var(--ink);
}
.prose a:hover { color: var(--accent-text); text-decoration-color: var(--accent); }

.prose blockquote {
  margin: 1.75em 0; padding: 14px 20px;
  border-left: 3px solid var(--accent); background: var(--surface-2);
  border-radius: 0 var(--radius-s) var(--radius-s) 0; color: var(--ink-soft);
}
.prose blockquote p:last-child { margin-bottom: 0; }

.prose code {
  font-family: var(--font-mono); font-size: 0.85em;
  padding: 0.15em 0.4em; border-radius: 6px;
  border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--ink);
}
.prose pre {
  margin: 0 0 1.75em; padding: 18px 20px;
  border-radius: var(--radius-m);
  background: var(--code-bg); border: 1px solid var(--code-line);
  overflow-x: auto; color: var(--code-ink); font-size: 0.875rem; line-height: 1.7;
}
.prose pre code { padding: 0; border: 0; background: transparent; color: inherit; font-size: inherit; }

.code-bar {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 1.75em; padding: 7px 8px 7px 16px;
  background: var(--code-bar-bg); border: 1px solid var(--code-line); border-bottom: 0;
  border-radius: var(--radius-m) var(--radius-m) 0 0;
}
.code-bar + pre { margin-top: 0; border-radius: 0 0 var(--radius-m) var(--radius-m); }
.code-bar-lang { font: 500 0.7rem/1 var(--font-mono); letter-spacing: 0.08em; color: var(--muted); }
.code-bar-copy {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 8px;
  background: transparent; color: var(--muted); border: 1px solid transparent; cursor: pointer;
  font: 500 0.78rem/1 var(--font-text); transition: background-color 0.15s, color 0.15s;
}
.code-bar-copy:hover { background: var(--surface-3); color: var(--ink); }
.code-bar-copy.is-copied { color: var(--olive); }

/* Tables: dark rounded frame, tinted header row */
.prose table {
  width: 100%; display: block; overflow-x: auto;
  border-collapse: separate; border-spacing: 0; margin: 2em 0; font-size: 0.93rem; line-height: 1.55;
  border: 1px solid var(--line-strong); border-radius: var(--radius-m);
}
.prose th, .prose td { padding: 12px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; min-width: 140px; }
.prose tr:last-child td { border-bottom: 0; }
.prose th { background: var(--surface-2); color: var(--ink); font-weight: 600; }
.prose td { color: var(--ink-soft); }
.prose img { border-radius: var(--radius-m); margin-block: 1.5em; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.5em 0; }

/* ---------- Callouts ---------- */
.docs-callout {
  display: flex; gap: 12px; padding: 16px 18px; margin-block: 1.75rem;
  border-radius: var(--radius-m);
  border: 1px solid var(--cl-line, var(--line-strong));
  background: var(--cl-bg, var(--surface));
}
.docs-callout .callout-icon { font-size: 1.1rem; line-height: 1.55; flex-shrink: 0; }
.docs-callout .callout-body { font: 400 0.95rem/1.65 var(--font-text); color: var(--ink-soft); }
.docs-callout .callout-body strong { color: var(--cl-fg, var(--ink)); }
.docs-callout .callout-body a { color: var(--cl-fg, var(--accent-text)); font-weight: 600; }
.docs-callout.callout-tip     { --cl-bg: var(--tip-bg);  --cl-line: var(--tip-line);  --cl-fg: var(--tip); }
.docs-callout.callout-note    { --cl-bg: var(--note-bg); --cl-line: var(--note-line); --cl-fg: var(--note); }
.docs-callout.callout-warning { --cl-bg: var(--warn-bg); --cl-line: var(--warn-line); --cl-fg: var(--warn); }
.docs-callout.callout-danger  { --cl-bg: var(--danger-bg); --cl-line: var(--danger-line); --cl-fg: var(--danger); }

@media (max-width: 720px) {
  .section { padding-block: 1.75rem; }
  .section-head { margin-bottom: 1.25rem; flex-direction: column; align-items: flex-start; gap: 8px; }
  .page { padding-top: 1.25rem; padding-bottom: 2.5rem; }
  .page-head { margin-bottom: 1rem; }
  .page-head h1 { font-size: clamp(1.8rem, 7vw, 2.4rem); }
  .page-actions, .lost-links { margin-top: 1.5rem; padding-top: 1rem; gap: 8px; }
  .empty { padding: 2rem 1rem; margin-block: 1rem; }
  .prose { font-size: 0.98rem; line-height: 1.75; }
  .prose h1, .prose h2, .prose h3, .prose h4 { margin-top: 1.6em; margin-bottom: 0.45em; }
  .prose p { margin-bottom: 1em; }
  .prose pre { padding: 14px 16px; font-size: 0.82rem; }
  .prose blockquote { margin: 1.25em 0; padding: 10px 14px; }
  .docs-callout { padding: 12px 14px; margin-block: 1.25rem; }
}

@media (max-width: 480px) {
  .button, .button-quiet { min-height: 38px; padding: 0 14px; font-size: 0.86rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}