/* Breakage — dark-mode OLED developer aesthetic. Semantic tokens; no raw hex in markup. */
:root {
  --bg: #0F172A;
  --surface: #272F42;
  --surface-2: #31394d;
  --border: #475569;
  --border-2: #5b6b82;
  --fg: #F8FAFC;
  --fg-muted: #94A3B8;
  --accent: #22C55E;
  --accent-ink: #0B1220;
  --danger: #EF4444;

  --font-sans: "Fira Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "Fira Code", ui-monospace, "SF Mono", Menlo, monospace;

  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px; --sp-6: 24px; --sp-8: 32px; --sp-12: 48px;
  --maxw: 72rem;
  --measure: 70ch;
  --radius: 8px;
  --glow: 0 0 16px rgba(34, 197, 94, .4);
}

* { box-sizing: border-box; }

body {
  font: 400 16px/1.6 var(--font-sans);
  color: var(--fg);
  background: var(--bg);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--sp-4);
  -webkit-font-smoothing: antialiased;
}

/* ---- landmarks ---- */
nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2) var(--sp-6);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--sp-8);
}
nav a { padding: var(--sp-2) 0; min-height: 44px; display: inline-flex; align-items: center; }
nav b {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--fg);
  letter-spacing: -.01em;
}
nav a:first-child b::before { content: "›_ "; color: var(--accent); }
nav a, footer a { color: var(--fg-muted); text-decoration: none; }
nav a:hover, footer a:hover { color: var(--fg); }

main { display: block; }
/* Readable measure for prose; tabular/code/preformatted spans the container. */
main > * { max-width: var(--measure); }
main > table, main > pre, main > ul, main > ol { max-width: 100%; }

footer {
  margin-top: var(--sp-12);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: .875rem;
}

/* ---- typography ---- */
h1, h2, h3 {
  font-family: var(--font-mono);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -.02em;
  margin: 0 0 var(--sp-4);
}
h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); margin-top: var(--sp-2); }
h2 { font-size: 1.5rem; margin-top: var(--sp-8); }
h3 { font-size: 1.125rem; margin-top: var(--sp-6); }
p, ul, ol { margin: 0 0 var(--sp-4); }
li { margin: var(--sp-1) 0; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.muted, p.muted { color: var(--fg-muted); }
.spark { font-family: var(--font-mono); letter-spacing: 1px; color: var(--accent); }
b { font-weight: 600; }

/* inline code (not code blocks) */
:not(pre) > code {
  font-family: var(--font-mono);
  font-size: .9em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .1em .4em;
}

pre {
  font-family: var(--font-mono);
  font-size: .85rem;
  line-height: 1.5;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-4);
  overflow-x: auto;
}

/* ---- tables ---- */
table { border-collapse: collapse; width: 100%; margin: 0 0 var(--sp-4); }
th, td { text-align: left; padding: var(--sp-3) var(--sp-3); border-bottom: 1px solid var(--border); vertical-align: middle; }
th {
  font-family: var(--font-mono);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--fg-muted);
  font-weight: 500;
}
tbody tr:hover { background: color-mix(in srgb, var(--surface) 45%, transparent); }
td form { margin: 0; display: inline-flex; }

/* ---- badges: severity is text + color, never color alone ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .4ch;
  font: 600 .75rem/1 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: .3rem .5rem;
  border-radius: 4px;
  border: 1px solid;
  white-space: nowrap;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.breaking { color: #F87171; background: rgba(239, 68, 68, .12); border-color: rgba(239, 68, 68, .4); }
.badge.warning  { color: #FBBF24; background: rgba(245, 158, 11, .12); border-color: rgba(245, 158, 11, .4); }
.badge.notice   { color: var(--fg-muted); background: rgba(148, 163, 184, .12); border-color: rgba(148, 163, 184, .35); }

/* ---- forms ---- */
form { display: flex; flex-wrap: wrap; gap: var(--sp-2); align-items: center; margin: var(--sp-4) 0; }
label { color: var(--fg-muted); }

input, select, button {
  font: 500 1rem/1.2 var(--font-sans);
  min-height: 44px;
  border-radius: 6px;
}
input, select {
  padding: .55rem .75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--fg);
  max-width: 100%;
}
input::placeholder { color: var(--fg-muted); }
input[type="search"], input[type="email"], input[type="url"], input[type="text"] {
  flex: 1 1 16rem;
  min-width: 0;
}
select { cursor: pointer; }

/* buttons: default = ghost/secondary */
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5ch;
  padding: .55rem 1rem;
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border);
  cursor: pointer;
  text-decoration: none;
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
button:hover, .btn:hover { background: var(--surface-2); border-color: var(--border-2); text-decoration: none; }

/* one primary CTA per view */
.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}
.primary:hover { background: var(--accent); border-color: var(--accent); box-shadow: var(--glow); }

/* destructive / low-key removal actions */
.danger {
  background: rgba(239, 68, 68, .08);
  border-color: rgba(239, 68, 68, .5);
  color: #FCA5A5;
  font-size: .875rem;
}
.danger:hover { background: rgba(239, 68, 68, .16); border-color: var(--danger); }

/* ---- focus + motion ---- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
:focus:not(:focus-visible) { outline: none; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ---- mobile: keep tables from pushing the page wide ---- */
@media (max-width: 640px) {
  body { padding: var(--sp-3); }
  table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  h2 { margin-top: var(--sp-6); }
}