/* Test page layout: the reference viewer's studio (stage + controls), restyled on brand.css tokens.
   No colour or font literals here: every value is a brand.css token or derived from one. */
:root {
  --tint: color-mix(in srgb, var(--color-primary) 14%, var(--color-surface));
  --warn-bg: color-mix(in srgb, var(--color-warning) 18%, var(--color-surface));
  --danger-bg: color-mix(in srgb, var(--color-danger) 12%, var(--color-surface));
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body { background: var(--color-surface-alt); color: var(--color-text); font-family: var(--font-body); font-size: 14px; line-height: 1.5; overflow-x: hidden; }
code, pre { font-family: var(--font-mono); }

.band { background: var(--color-surface-inverse); color: var(--color-text-inverse); }
.band-inner, .wrap { max-width: 1240px; margin: 0 auto; padding-left: max(var(--space-4), env(safe-area-inset-left, 0px)); padding-right: max(var(--space-4), env(safe-area-inset-right, 0px)); }
.band-inner { padding-block: var(--space-4); display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3) var(--space-5); }
.wordmark { width: 150px; min-width: var(--logo-wordmark-min); height: auto; display: block; }
.band-text { min-width: 0; flex: 1 1 260px; }
.bsi-base .band h1 { margin: 0; color: var(--color-text-inverse); font-size: var(--text-xl); letter-spacing: 0.04em; }
.band p { margin: 0; font-size: var(--text-sm); opacity: 0.9; }

.wrap { padding-block: var(--space-5) 0; }
.studio { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: var(--space-5); align-items: start; }
@media (max-width: 900px) { .studio { grid-template-columns: minmax(0, 1fr); } }
body > section.wrap:last-of-type { padding-bottom: var(--space-7); }

.stage-card, .panel { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); min-width: 0; }
.stage-card { overflow: hidden; }
.stage-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 10px; padding: var(--space-3) 14px; border-bottom: 1px solid var(--color-border); }
.tabs { display: flex; gap: var(--space-1); flex-wrap: wrap; }
.tab { font: 600 12px var(--font-body); letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-text-muted); background: transparent; border: 1px solid transparent; border-radius: var(--radius-sm); padding: 7px var(--space-3); cursor: pointer; }
.tab[aria-selected="true"] { color: var(--color-primary); border-color: var(--color-primary); background: var(--tint); }
.chip { font-family: var(--font-mono); font-size: 12px; color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.chip b { color: var(--color-primary); font-weight: 600; }
.ang { font-family: var(--font-mono); color: var(--color-text); font-weight: 600; font-variant-numeric: tabular-nums; }
.stage-head .chips { display: flex; gap: 14px; flex-wrap: wrap; }
/* The stage is the compositor's background (white): the garment is composited over it. */
.stage { position: relative; background: var(--color-surface); }
#view { display: block; width: 100%; height: auto; aspect-ratio: 1 / 1; max-width: 100%; touch-action: none; cursor: grab; }
#view.dragging { cursor: grabbing; }
.loading { position: absolute; inset: 0; display: grid; place-items: center; color: var(--color-text-muted); font-weight: 600; background: var(--color-surface); text-align: center; padding: var(--space-4); }
.stage-foot { padding: 10px 14px; border-top: 1px solid var(--color-border); color: var(--color-text-muted); font-size: 12.5px; display: flex; flex-wrap: wrap; gap: 6px 18px; }

.section { padding: var(--space-4); border-bottom: 1px solid var(--color-border); display: grid; gap: 10px; min-width: 0; }
.section:last-child { border-bottom: 0; }
.bsi-base .section h2 { margin: 0; font-size: 15px; letter-spacing: 0.08em; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: var(--space-2); }
.section h2 small { font-family: var(--font-body); font-size: 11.5px; letter-spacing: 0; text-transform: none; color: var(--color-text-muted); font-weight: 500; }
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(34px, 1fr)); gap: var(--space-2); }
.sw { aspect-ratio: 1; border-radius: 50%; border: 1px solid var(--color-border-strong); cursor: pointer; padding: 0; position: relative; }
.sw[aria-pressed="true"] { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row > label { flex: 1 1 140px; min-width: 0; }
label { display: grid; gap: var(--space-1); font-size: 12px; font-weight: 600; color: var(--color-text-muted); }
label .val { font-family: var(--font-mono); font-weight: 500; color: var(--color-text); font-variant-numeric: tabular-nums; }
.lab { display: flex; justify-content: space-between; gap: var(--space-2); }
input[type="text"], input[type="password"], select { font: 500 14px var(--font-body); color: var(--color-text); background: var(--color-surface-alt); border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); padding: var(--space-2) 10px; width: 100%; min-width: 0; }
input[type="range"] { width: 100%; accent-color: var(--color-primary); }
input[type="color"] { width: 44px; height: 36px; border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); background: var(--color-surface-alt); padding: 2px; cursor: pointer; }
.btn { font: 600 12.5px var(--font-body); border-radius: var(--radius-sm); padding: var(--space-2) var(--space-3); cursor: pointer; border: 1px solid var(--color-primary); color: var(--color-primary); background: transparent; }
.btn.primary { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-on-primary); }
.btn.primary:hover:not(:disabled) { background: var(--color-primary-hover); }
.btn:disabled { opacity: 0.45; cursor: default; }
.file { position: relative; overflow: hidden; display: inline-flex; }
.file input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.hint { font-size: 12px; color: var(--color-text-muted); margin: 0; }
.warn { font-size: 12px; color: var(--color-warning-text); background: var(--warn-bg); border-radius: var(--radius-sm); padding: 6px var(--space-2); margin: 0; }
.check { display: flex; align-items: center; gap: var(--space-2); font-size: 13px; color: var(--color-text); font-weight: 500; }
.sel-pill { font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-primary); background: var(--tint); border-radius: var(--radius-full); padding: 2px var(--space-2); }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* ---- server render panel ---- */
.keybar .panel { max-width: 560px; }
.status { margin: 0; font-weight: 600; }
.status.error { color: var(--color-danger-text); background: var(--danger-bg); border-radius: var(--radius-sm); padding: 6px var(--space-2); }
.status.ok { color: var(--color-success-text); }
.warnings { margin: 0; padding-left: 0; list-style: none; display: grid; gap: 6px; }
.warnings li { font-size: 12.5px; color: var(--color-warning-text); background: var(--warn-bg); border-radius: var(--radius-sm); padding: 6px var(--space-2); overflow-wrap: anywhere; }
.compare { display: grid; gap: var(--space-5); }
.view-row { display: grid; gap: var(--space-2); min-width: 0; }
.bsi-base .view-row h3 { margin: 0; font-size: var(--text-base); letter-spacing: 0.06em; }
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
@media (max-width: 520px) { .pair { grid-template-columns: minmax(0, 1fr); } }
figure { margin: 0; min-width: 0; }
figure img { display: block; width: 100%; height: auto; aspect-ratio: 1 / 1; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
figcaption { font-size: 12px; color: var(--color-text-muted); padding-top: var(--space-1); }
.metric { font-family: var(--font-mono); font-size: 12px; color: var(--color-text); }
details summary { cursor: pointer; font-weight: 600; color: var(--color-heading); }
pre { margin: var(--space-2) 0 0; padding: var(--space-3); background: var(--color-surface-sunken); border-radius: var(--radius-sm); font-size: 12px; max-width: 100%; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; }