/* ============================================================================
   Review documentation chrome — chooser, comparison, mapping.

   Deliberately neutral and self-contained: it must not look like any of the
   three directions, or it would bias the review. Nothing here is loaded by the
   prototypes.
   ========================================================================== */

:root {
  color-scheme: dark;
  --d-bg: #0b0d11;
  --d-bg2: #0f1218;
  --d-surface: #14181f;
  --d-surface2: #1b202a;
  --d-line: #242b36;
  --d-line2: #333c4a;
  --d-text: #eef1f6;
  --d-text2: #a2adbb;
  --d-text3: #6c7787;
  --d-accent: #7ea8ff;
  --d-ok: #48c98d;
  --d-warn: #e5b03f;
  --d-danger: #ef6a60;
  --d-ui: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --d-mono: "SFMono-Regular", "SF Mono", Menlo, Consolas, ui-monospace, monospace;
  --d-r: 10px;
}
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --d-bg: #f5f6f9; --d-bg2: #eceef3; --d-surface: #ffffff; --d-surface2: #f5f6f9;
    --d-line: #e0e4eb; --d-line2: #c6cdd8; --d-text: #10141b; --d-text2: #4e5766; --d-text3: #7b8493;
    --d-accent: #2559c9; --d-ok: #16794f; --d-warn: #8e6209; --d-danger: #c33a30;
  }
}

*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0; background: var(--d-bg); color: var(--d-text);
  font-family: var(--d-ui); font-size: 14px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p, figure { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg { display: block; }
:focus-visible { outline: 2px solid var(--d-accent); outline-offset: 2px; border-radius: 4px; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.wrap.wide { max-width: 1400px; }

/* ------------------------------------------------------------------ nav */
.topnav {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid var(--d-line);
  background: color-mix(in srgb, var(--d-bg) 88%, transparent);
  backdrop-filter: blur(12px);
}
.topnav .inner { display: flex; align-items: center; gap: 8px; height: 58px; }
.topnav .brand { display: flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: -.02em; margin-right: 12px; }
.topnav .brand svg { color: var(--d-accent); }
.topnav .spacer { flex: 1; }
.topnav a.link {
  padding: 7px 11px; border-radius: 999px; font-size: 13px; color: var(--d-text2); white-space: nowrap;
}
.topnav a.link:hover { background: var(--d-surface2); color: var(--d-text); }
.topnav a.link[aria-current="page"] { background: var(--d-surface2); color: var(--d-text); }

/* ----------------------------------------------------------------- type */
.eyebrow { font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--d-text3); }
.h1 { font-size: clamp(28px, 4vw, 42px); line-height: 1.1; letter-spacing: -.03em; font-weight: 660; }
.h2 { font-size: 22px; line-height: 1.25; letter-spacing: -.02em; font-weight: 620; }
.h3 { font-size: 16px; line-height: 1.3; letter-spacing: -.01em; font-weight: 620; }
.lede { font-size: 16px; line-height: 1.65; color: var(--d-text2); max-width: 74ch; }
.muted { color: var(--d-text2); }
.dim { color: var(--d-text3); }
.mono { font-family: var(--d-mono); font-size: .92em; }
.small { font-size: 13px; }
.tiny { font-size: 12px; color: var(--d-text3); }

/* --------------------------------------------------------------- blocks */
.hero { padding: 64px 0 40px; border-bottom: 1px solid var(--d-line); }
section.band { padding: 56px 0; border-bottom: 1px solid var(--d-line); }
section.band:last-of-type { border-bottom: 0; }
.sec-head { margin-bottom: 28px; }
.sec-head .h2 { margin-top: 6px; }
.sec-head p { margin-top: 10px; }

.grid { display: grid; gap: 20px; }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: 12px; }

.card {
  background: var(--d-surface); border: 1px solid var(--d-line); border-radius: var(--d-r);
  overflow: hidden;
}
.card.pad { padding: 20px; }
.card-body { padding: 20px; }
.card-foot { display: flex; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--d-line); background: var(--d-surface2); flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 34px; padding: 0 14px; border-radius: 8px; font-size: 13px; font-weight: 500;
  border: 1px solid var(--d-line2); background: var(--d-surface2); color: var(--d-text);
  white-space: nowrap; transition: background .12s ease, border-color .12s ease;
}
.btn:hover { background: var(--d-line); }
.btn.primary { background: var(--d-accent); border-color: var(--d-accent); color: #06070a; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--d-text2); }
.btn.ghost:hover { background: var(--d-surface2); color: var(--d-text); }
.btn.sm { height: 28px; padding: 0 10px; font-size: 12px; }

.tag {
  display: inline-flex; align-items: center; gap: 6px; height: 22px; padding: 0 9px;
  border-radius: 999px; font-size: 11.5px; border: 1px solid var(--d-line2);
  color: var(--d-text2); background: var(--d-surface2); white-space: nowrap;
}
.tag .dot { width: 6px; height: 6px; border-radius: 999px; background: currentColor; }
.tag.ok { color: var(--d-ok); border-color: color-mix(in srgb, var(--d-ok) 40%, transparent); }
.tag.warn { color: var(--d-warn); border-color: color-mix(in srgb, var(--d-warn) 40%, transparent); }
.tag.no { color: var(--d-danger); border-color: color-mix(in srgb, var(--d-danger) 40%, transparent); }
.tag.pick { color: var(--d-accent); border-color: color-mix(in srgb, var(--d-accent) 45%, transparent); background: color-mix(in srgb, var(--d-accent) 12%, transparent); }

/* -------------------------------------------------------- live previews */
.preview {
  position: relative; overflow: hidden; background: var(--d-bg2);
  border-bottom: 1px solid var(--d-line); aspect-ratio: 16 / 10;
}
.preview iframe {
  position: absolute; top: 0; left: 0; width: 1440px; height: 900px;
  border: 0; transform-origin: top left; pointer-events: none;
}
.preview .shade { position: absolute; inset: 0; box-shadow: inset 0 -40px 60px -40px rgba(0,0,0,.5); }
.preview .badge-n {
  position: absolute; left: 12px; top: 12px; z-index: 2;
  font-family: var(--d-mono); font-size: 11px; letter-spacing: .08em;
  padding: 4px 8px; border-radius: 999px; background: rgba(8,10,14,.72); color: #fff;
  border: 1px solid rgba(255,255,255,.14);
}

.palette { display: flex; gap: 4px; margin-top: 14px; }
.palette i { flex: 1; height: 20px; border-radius: 4px; border: 1px solid rgba(127,127,127,.24); }

/* ---------------------------------------------------------------- table */
.tablewrap { border: 1px solid var(--d-line); border-radius: var(--d-r); overflow: auto; background: var(--d-surface); }
table.matrix { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; }
table.matrix th, table.matrix td { padding: 12px 14px; border-bottom: 1px solid var(--d-line); vertical-align: top; text-align: left; }
table.matrix thead th {
  position: sticky; top: 0; background: var(--d-surface2); z-index: 1;
  font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--d-text3);
  border-bottom: 1px solid var(--d-line2);
}
table.matrix tbody tr:last-child td { border-bottom: 0; }
table.matrix tbody tr:hover { background: var(--d-surface2); }
table.matrix th[scope="row"] { font-weight: 600; color: var(--d-text); width: 190px; }
table.matrix td.pick { background: color-mix(in srgb, var(--d-accent) 8%, transparent); }
table.matrix .note { display: block; color: var(--d-text3); font-size: 12px; margin-top: 4px; }

.klist { display: flex; flex-direction: column; gap: 10px; }
.klist li { display: flex; gap: 10px; font-size: 13.5px; color: var(--d-text2); }
.klist li::before { content: ""; flex: none; width: 6px; height: 6px; margin-top: .55em; border-radius: 999px; background: var(--d-line2); }
.klist.plus li::before { background: var(--d-ok); }
.klist.minus li::before { background: var(--d-warn); }

.callout {
  border: 1px solid var(--d-line2); border-left: 3px solid var(--d-accent);
  border-radius: 0 var(--d-r) var(--d-r) 0; padding: 18px 20px; background: var(--d-surface);
}

.steps { counter-reset: s; display: flex; flex-direction: column; gap: 14px; }
.steps li { counter-increment: s; display: flex; gap: 14px; }
.steps li::before {
  content: counter(s); flex: none; display: grid; place-items: center;
  width: 26px; height: 26px; border-radius: 999px; background: var(--d-surface2);
  border: 1px solid var(--d-line2); font-size: 12px; font-variant-numeric: tabular-nums; color: var(--d-text2);
}
.steps code, code.inline {
  font-family: var(--d-mono); font-size: 12.5px; padding: 2px 6px; border-radius: 5px;
  background: var(--d-surface2); border: 1px solid var(--d-line); color: var(--d-text);
}
pre.code {
  font-family: var(--d-mono); font-size: 12.5px; line-height: 1.7;
  padding: 14px 16px; border-radius: var(--d-r); background: var(--d-bg2);
  border: 1px solid var(--d-line); color: var(--d-text2); overflow-x: auto; margin: 0;
}

footer.docfoot {
  padding: 32px 0 48px; border-top: 1px solid var(--d-line);
  color: var(--d-text3); font-size: 12.5px;
}
footer.docfoot .row { justify-content: space-between; }
footer.docfoot a { color: var(--d-text2); }
footer.docfoot a:hover { color: var(--d-accent); }

@media (max-width: 1000px) {
  .g3 { grid-template-columns: minmax(0, 1fr); }
  .g2 { grid-template-columns: minmax(0, 1fr); }
}