/* Constant Annotation Studio v2 — ledger aesthetic.
   Warm paper, ink type, one oxblood accent, hairline rules. */

:root {
  --paper: #f4f1ea;
  --paper-raised: #fbf9f4;
  --paper-sunken: #edeae1;
  --ink: #1c1a17;
  --ink-soft: #6e685e;
  --ink-faint: #a09a8d;
  --rule: #d8d2c4;
  --rule-strong: #b8b09e;
  --accent: #7a1f1f;
  --ok: #2f6b3a;
  --warn: #9a6b1f;
  --display: "Fraunces", serif;
  --mono: "Spline Sans Mono", monospace;
  --topbar-h: 52px;
  --footer-h: 56px;
}

* { box-sizing: border-box; }

/* Author display rules (e.g. display: flex) would otherwise override the
   UA's [hidden] { display: none } and leave "hidden" elements visible. */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--paper);
  background-image: radial-gradient(rgba(28, 26, 23, 0.035) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.5;
  overflow: hidden;
}

#app { height: 100vh; display: flex; flex-direction: column; }

button { font-family: var(--mono); }
input, select, textarea { font-family: var(--mono); color: var(--ink); }

/* ---------- App shell: topbar / content / footer ---------- */

.topbar {
  height: var(--topbar-h);
  flex: none;
  display: flex; align-items: center; gap: 18px;
  padding: 0 20px;
  background: var(--paper-raised);
  border-bottom: 2px solid var(--ink);
}
.topbar .wordmark {
  font-family: var(--display);
  font-weight: 600; font-size: 19px;
  letter-spacing: -0.01em;
  cursor: pointer; white-space: nowrap;
}
.topbar .wordmark span { color: var(--accent); }
.topbar .project-name {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--ink-soft);
  max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.topbar .spacer { flex: 1; }

nav.steps { display: flex; gap: 2px; height: 100%; }
nav.steps a {
  display: flex; align-items: center; padding: 0 12px;
  font-size: 11.5px; letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--ink-soft); text-decoration: none;
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  white-space: nowrap;
}
nav.steps a:hover { color: var(--ink); }
nav.steps a.active { color: var(--accent); border-bottom-color: var(--accent); }
nav.steps a .dot {
  width: 6px; height: 6px; border-radius: 50%;
  margin-left: 7px; background: transparent; flex: none;
}
nav.steps a .dot.running { background: var(--warn); animation: pulse 1.4s ease-in-out infinite; }
nav.steps a .dot.done { background: var(--ok); }
nav.steps a .dot.attention { background: var(--ink-faint); }

@keyframes pulse { 50% { opacity: 0.3; } }

/* GPU indicator */
.gpu-indicator { position: relative; display: flex; align-items: center; gap: 8px; cursor: default; }
.gpu-indicator .label {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-soft);
}
.gpu-indicator .dot {
  width: 10px; height: 10px; border-radius: 50%;
  border: 1px solid var(--ink); background: var(--paper-sunken);
}
.gpu-indicator .dot.cold { background: var(--paper-sunken); }
.gpu-indicator .dot.warming { background: var(--warn); animation: pulse 1.4s ease-in-out infinite; }
.gpu-indicator .dot.ready { background: var(--ok); }
.gpu-indicator .dot.warning { background: var(--warn); }
.gpu-indicator .dot.error, .gpu-indicator .dot.stopped { background: var(--accent); }
.gpu-popover {
  position: absolute; top: calc(100% + 10px); right: 0; z-index: 60;
  width: 300px; background: var(--paper-raised);
  border: 1px solid var(--ink); box-shadow: 4px 4px 0 rgba(28, 26, 23, 0.12);
  padding: 12px 14px; font-size: 12px;
  display: none;
}
.gpu-indicator.open .gpu-popover { display: block; }
/* Invisible hover bridge over the gap between the label and the card. */
.gpu-popover::before {
  content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px;
}
.gpu-popover .row { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; }
.gpu-popover .row .k { color: var(--ink-soft); text-transform: uppercase; font-size: 10.5px; letter-spacing: 0.1em; }
.gpu-popover .actions { display: flex; gap: 8px; margin-top: 10px; }

.content {
  flex: 1; min-height: 0;
  display: flex; flex-direction: column;
  overflow: hidden;
}
.content.scroll { overflow-y: auto; }

.footer {
  height: var(--footer-h);
  flex: none;
  display: flex; align-items: center; gap: 16px;
  padding: 0 20px;
  background: var(--paper-raised);
  border-top: 2px solid var(--ink);
}
.footer .readiness {
  font-size: 12px; color: var(--ink-soft);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.footer .spacer { flex: 1; }

/* ---------- Buttons / pills / inputs ---------- */

button.action {
  font-size: 12px; letter-spacing: 0.04em;
  background: var(--ink); color: var(--paper);
  border: none; padding: 8px 18px; cursor: pointer;
}
button.action:hover { background: var(--accent); }
button.action.primary { background: var(--accent); font-weight: 600; padding: 10px 26px; }
button.action.primary:hover { background: var(--ink); }
button.action.ghost { background: none; color: var(--ink); border: 1px solid var(--ink); }
button.action.ghost:hover { color: var(--accent); border-color: var(--accent); }
button.action.small { padding: 4px 10px; font-size: 11px; }
button.action:disabled { opacity: 0.4; cursor: default; }
button.action.busy {
  position: relative; pointer-events: none; opacity: 0.85;
  animation: action-busy 1.4s ease-in-out infinite;
}
@keyframes action-busy {
  0%, 100% { opacity: 0.72; }
  50% { opacity: 1; }
}

.pill {
  display: inline-block; font-size: 10.5px; padding: 2px 9px;
  border: 1px solid currentColor; border-radius: 999px;
  text-transform: uppercase; letter-spacing: 0.08em;
  white-space: nowrap;
}
.pill.ok { color: var(--ok); }
.pill.warn { color: var(--warn); }
.pill.bad { color: var(--accent); }
.pill.dim { color: var(--ink-soft); }

input.plain, select.plain, textarea.plain {
  font-size: 13px; background: var(--paper-raised);
  border: 1px solid var(--rule); padding: 6px 10px;
}
input.plain:focus, select.plain:focus, textarea.plain:focus {
  outline: none; border-color: var(--ink);
}

label.field { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); }
label.field > * { display: block; margin-top: 4px; width: 100%; }

/* ---------- Common components ---------- */

h1.page-title { font-family: var(--display); font-weight: 600; font-size: 30px; margin: 0; letter-spacing: -0.01em; }
h2.section { font-family: var(--display); font-weight: 500; font-size: 20px; margin: 0 0 6px; }
p.note { color: var(--ink-soft); font-size: 12.5px; margin: 0 0 14px; max-width: 68ch; }

.card {
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  padding: 16px 18px;
}

.drawer { border: 1px solid var(--rule); background: var(--paper-raised); }
.drawer > summary {
  cursor: pointer; padding: 9px 14px; list-style: none;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-soft);
  user-select: none;
}
.drawer > summary::before { content: "+ "; color: var(--accent); }
.drawer[open] > summary::before { content: "− "; }
.drawer > summary::-webkit-details-marker { display: none; }
.drawer .drawer-body { padding: 4px 14px 14px; border-top: 1px solid var(--rule); }

.toast-stack {
  position: fixed; bottom: calc(var(--footer-h) + 14px); right: 16px; z-index: 100;
  display: flex; flex-direction: column; gap: 8px; max-width: 380px;
}
.toast {
  background: var(--ink); color: var(--paper);
  padding: 10px 14px; font-size: 12.5px;
  border-left: 4px solid var(--accent);
  animation: toast-in 0.18s ease-out;
}
.toast.ok { border-left-color: var(--ok); }
.toast.warn { border-left-color: var(--warn); }
@keyframes toast-in { from { transform: translateY(8px); opacity: 0; } }

.empty { color: var(--ink-soft); font-size: 13px; padding: 26px 0; text-align: center; }

.progress {
  height: 6px; background: var(--paper-sunken); border: 1px solid var(--rule);
  position: relative; overflow: hidden;
}
.progress .bar { position: absolute; inset: 0; width: 0%; background: var(--accent); transition: width 0.3s ease; }
.progress.ok .bar { background: var(--ok); }
.progress.indeterminate .bar {
  width: 36%;
  animation: progress-slide 1.2s ease-in-out infinite;
}
@keyframes progress-slide {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(280%); }
}

/* ---------- Stage viewer (9:16 canvas stage) ---------- */

.stage-viewer {
  position: relative; width: 100%; height: 100%;
  background: var(--paper-sunken);
  border: 1px solid var(--rule);
  overflow: hidden;
  touch-action: none;
}
.stage-viewer canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.stage-viewer .stage-hud {
  position: absolute; top: 8px; right: 8px; z-index: 5;
  display: flex; gap: 6px;
}
.stage-viewer .stage-hud button {
  background: rgba(251, 249, 244, 0.92); border: 1px solid var(--rule);
  font-size: 11px; padding: 3px 8px; cursor: pointer; color: var(--ink-soft);
}
.stage-viewer .stage-hud button:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Grids of frames ---------- */

.frame-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(128px, 1fr));
  gap: 10px;
}
.frame-tile {
  position: relative; aspect-ratio: 9 / 16;
  background: var(--paper-sunken); border: 1px solid var(--rule);
  overflow: hidden; cursor: pointer;
}
.frame-tile img, .frame-tile canvas { width: 100%; height: 100%; object-fit: cover; display: block; }
.frame-tile.selected { outline: 2px solid var(--accent); outline-offset: -2px; }
.frame-tile .tag {
  position: absolute; top: 4px; left: 4px;
  font-size: 9.5px; padding: 1px 6px; letter-spacing: 0.08em; text-transform: uppercase;
  background: rgba(28, 26, 23, 0.82); color: var(--paper);
}
.frame-tile .tag.train { background: var(--ok); }
.frame-tile .tag.valid { background: var(--warn); }
.frame-tile .tag.test { background: var(--accent); }

/* 4-state hover selector on frame tiles */
.split-selector {
  position: absolute; left: 0; right: 0; bottom: 0;
  display: none; grid-template-columns: repeat(4, 1fr);
  background: rgba(28, 26, 23, 0.88);
}
.frame-tile:hover .split-selector { display: grid; }
.split-selector button {
  border: none; background: none; color: var(--paper);
  font-size: 9.5px; padding: 5px 0; cursor: pointer;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.split-selector button:hover { background: var(--accent); }
.split-selector button.active { background: var(--paper); color: var(--ink); font-weight: 600; }

/* ---------- Home page ---------- */

.home-wrap { max-width: 1180px; margin: 0 auto; padding: 34px 28px 60px; width: 100%; }
.home-head {
  display: flex; align-items: baseline; gap: 24px;
  padding-bottom: 16px; margin-bottom: 26px;
  border-bottom: 3px double var(--ink);
}
.home-head .sub {
  color: var(--ink-soft); font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.14em;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
}
.project-card {
  background: var(--paper-raised); border: 1px solid var(--rule);
  cursor: pointer; position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}
.project-card:hover { border-color: var(--ink); }
.project-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--rule); z-index: 2;
}
.project-card.live::before { background: var(--warn); }
.project-card.trained::before { background: var(--ok); }
.project-card .poster {
  aspect-ratio: 9 / 12; background: var(--paper-sunken);
  overflow: hidden; position: relative;
}
.project-card .poster img { width: 100%; height: 100%; object-fit: cover; display: block; }
.project-card .poster .no-video {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--ink-faint); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em;
}
.project-card .body { padding: 12px 14px 12px; }
.project-card .name {
  font-family: var(--display); font-size: 17px; font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.project-card .meta { font-size: 11px; color: var(--ink-soft); margin-top: 2px; }
.project-card .chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.project-card .delete {
  position: absolute; top: 10px; right: 8px; z-index: 3;
  background: rgba(251, 249, 244, 0.94); border: 1px solid var(--rule);
  color: var(--ink-soft); font-size: 10.5px; padding: 2px 8px; cursor: pointer;
  display: none; text-transform: uppercase; letter-spacing: 0.08em;
}
.project-card:hover .delete { display: block; }
.project-card .delete:hover { color: var(--accent); border-color: var(--accent); }

.project-card.new {
  border-style: dashed; justify-content: center; align-items: center;
  min-height: 280px; gap: 10px; color: var(--ink-soft);
}
.project-card.new:hover { color: var(--accent); }
.project-card.new .plus { font-family: var(--display); font-size: 44px; line-height: 1; }
.project-card.new .label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; }
.project-card.new form { display: flex; flex-direction: column; gap: 10px; padding: 0 18px; width: 100%; }

/* ---------- Source page ---------- */

.source-wrap {
  flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center;
  padding: 30px;
}
.dropzone {
  width: min(560px, 90%); aspect-ratio: 16 / 9;
  border: 2px dashed var(--rule); background: var(--paper-raised);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; cursor: pointer; text-align: center; padding: 30px;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); }
.dropzone .big { font-family: var(--display); font-size: 24px; font-weight: 500; }
.dropzone .hint { color: var(--ink-soft); font-size: 12px; }

.source-layout {
  flex: 1; min-height: 0; display: flex; gap: 24px;
  padding: 26px 30px; max-width: 1100px; margin: 0 auto; width: 100%;
}
.source-layout .poster-col {
  flex: none; width: 300px; display: flex; flex-direction: column; gap: 12px;
}
.source-layout .poster-col .poster {
  aspect-ratio: 9 / 16; background: var(--paper-sunken);
  border: 1px solid var(--rule); overflow: hidden;
}
.source-layout .poster-col .poster img { width: 100%; height: 100%; object-fit: cover; display: block; }
.source-layout .info-col { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 16px; overflow-y: auto; }

.meta-list { display: grid; grid-template-columns: auto 1fr; gap: 4px 18px; font-size: 12.5px; }
.meta-list .k { color: var(--ink-soft); text-transform: uppercase; font-size: 10.5px; letter-spacing: 0.1em; align-self: center; }

/* ---------- Sample page ---------- */

.sample-layout { flex: 1; min-height: 0; display: flex; flex-direction: column; padding: 14px 20px 0; gap: 10px; }

.sample-toolbar { display: flex; align-items: center; gap: 14px; flex: none; flex-wrap: wrap; }
.stat-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.stat-chip {
  display: flex; align-items: baseline; gap: 6px;
  background: var(--paper-raised); border: 1px solid var(--rule);
  padding: 4px 12px;
}
.stat-chip .n { font-family: var(--display); font-weight: 600; font-size: 17px; }
.stat-chip .l { font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); }
.stat-chip.kept .n { color: var(--ok); }
.stat-chip.rescued .n { color: var(--warn); }
.stat-chip.gaps .n { color: var(--accent); }

.timeline-wrap { position: relative; flex: none; height: 170px; border: 1px solid var(--rule); background: var(--paper-raised); }
.timeline-wrap canvas { width: 100%; height: 100%; display: block; cursor: crosshair; }
.hover-preview {
  position: absolute; bottom: calc(100% + 6px); width: 220px; display: none; z-index: 30;
  background: var(--ink); border: 1px solid var(--ink); box-shadow: 4px 4px 0 rgba(28, 26, 23, 0.15);
  pointer-events: none;
}
.hover-preview img { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; display: block; }
.hover-preview .cap { color: var(--paper); font-size: 10.5px; padding: 5px 8px; }

.sample-inspector { flex: none; border: 1px solid var(--rule); background: var(--paper-raised); padding: 10px 14px; }
.sample-inspector .insp-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.sample-inspector .insp-head .title { font-family: var(--display); font-size: 16px; font-weight: 600; }
.filmstrip { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 6px; }
.cand {
  flex: none; width: 130px; border: 1px solid var(--rule); background: var(--paper);
  position: relative;
}
.cand img { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; display: block; }
.cand.winner { outline: 2px solid var(--ok); outline-offset: -2px; }
.cand.fail img { opacity: 0.45; }
.cand .badges { position: absolute; top: 4px; left: 4px; display: flex; flex-direction: column; gap: 3px; z-index: 2; }
.cand .badge {
  font-size: 8.5px; text-transform: uppercase; letter-spacing: 0.07em;
  padding: 1px 5px; background: rgba(28, 26, 23, 0.85); color: var(--paper); width: max-content;
}
.cand .badge.win { background: var(--ok); }
.cand .badge.fail { background: var(--accent); }
.cand .meta { padding: 5px 7px; font-size: 10px; color: var(--ink-soft); }
.cand .scorebar { height: 3px; background: var(--paper-sunken); margin-top: 4px; }
.cand .scorebar i { display: block; height: 100%; background: var(--accent); }
.cand .cand-act {
  width: 100%; border: none; border-top: 1px solid var(--rule);
  background: none; font-family: var(--mono); font-size: 10px; padding: 4px 0;
  cursor: pointer; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft);
}
.cand .cand-act:hover { color: var(--accent); }

.sample-grid-area { flex: 1; min-height: 0; overflow-y: auto; padding-bottom: 16px; }
.sample-grid-head { display: flex; align-items: center; gap: 12px; margin: 4px 0 10px; position: sticky; top: 0; background: var(--paper); z-index: 5; padding: 6px 0; }

.slider-row { display: grid; grid-template-columns: 130px 1fr 70px; align-items: center; gap: 12px; padding: 5px 0; }
.slider-row .k { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); }
.slider-row .v { font-size: 11.5px; text-align: right; }
.slider-row input[type="range"] { width: 100%; accent-color: var(--accent); }

/* ---------- Classes page ---------- */

.classes-layout { flex: 1; min-height: 0; display: flex; flex-direction: column; padding: 14px 20px 0; gap: 10px; }
.classes-toolbar { display: flex; align-items: center; gap: 14px; flex: none; flex-wrap: wrap; }
.classes-list { flex: 1; min-height: 0; overflow-y: auto; padding-bottom: 18px; }

.class-row { border: 1px solid var(--rule); background: var(--paper-raised); margin-bottom: 10px; }
.class-row.unobserved { opacity: 0.72; }
.class-row .head {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px; cursor: pointer;
}
.class-row .head .cname {
  font-family: var(--display); font-size: 16px; font-weight: 600;
  border: none; background: none; padding: 0; min-width: 120px; flex: 0 1 auto;
}
.class-row .head .cname:focus { outline: 1px solid var(--rule); }
.class-row .head .group { font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-faint); }
.class-row .head .spacer { flex: 1; }
.class-row .body { padding: 0 14px 14px; border-top: 1px solid var(--rule); }
.class-row textarea.desc {
  width: 100%; min-height: 58px; resize: vertical;
  font-size: 12.5px; line-height: 1.45; margin-top: 10px;
  background: var(--paper); border: 1px solid var(--rule); padding: 8px 10px;
}
.class-row textarea.desc:focus { outline: none; border-color: var(--ink); }

.exemplar-strip { display: flex; gap: 10px; overflow-x: auto; margin-top: 12px; padding-bottom: 4px; }
.exemplar {
  flex: none; width: 132px; position: relative;
  border: 1px solid var(--rule); background: var(--paper);
}
.exemplar canvas { width: 100%; aspect-ratio: 9 / 16; display: block; }
.exemplar .sim {
  position: absolute; top: 4px; right: 4px;
  font-size: 9px; padding: 1px 5px; background: rgba(28, 26, 23, 0.85); color: var(--paper);
}
.exemplar .ex-actions { display: flex; }
.exemplar .ex-actions button {
  flex: 1; border: none; border-top: 1px solid var(--rule);
  background: none; font-family: var(--mono); font-size: 9.5px; padding: 5px 2px;
  cursor: pointer; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft);
}
.exemplar .ex-actions button:hover { color: var(--accent); }
.exemplar.busy::after {
  content: ""; position: absolute; inset: 0; background: rgba(244, 241, 234, 0.7);
}

.classes-divider {
  display: flex; align-items: center; gap: 12px; margin: 20px 0 12px;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-soft);
}
.classes-divider::before, .classes-divider::after { content: ""; flex: 1; border-top: 1px solid var(--rule); }

/* Per-class done toggle: collapses the row and sinks it in its section. */
.done-toggle {
  border: 1px solid var(--rule); background: none; font-family: var(--mono);
  font-size: 9.5px; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 3px 10px; cursor: pointer; color: var(--ink-soft);
}
.done-toggle:hover { color: var(--accent); border-color: var(--accent); }
.done-toggle.is-done { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.class-row.done { opacity: 0.55; }

/* Staged (unsaved) exemplar edits */
.exemplar.staged { border-color: #b3541e; }
.exemplar .sim.manual { background: #b3541e; }
.exemplar.add-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; width: 132px; flex: none; aspect-ratio: 9 / 16; cursor: pointer;
  border: 1px dashed var(--ink-soft); background: none; color: var(--ink-soft);
  font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.06em;
}
.exemplar.add-tile:hover { color: var(--accent); border-color: var(--accent); }
.exemplar.add-tile .plus { font-size: 26px; line-height: 1; }

.session-bar {
  display: flex; align-items: center; gap: 10px; margin-top: 12px;
  padding: 8px 12px; border: 1px solid var(--warn); background: var(--paper);
}
.session-bar .note { margin: 0; font-size: 11.5px; color: var(--ink-soft); }
.session-bar .spacer { flex: 1; }

/* Full-screen overlays: frame picker + exemplar box editor */
.frame-picker, .ex-editor {
  position: fixed; inset: 0; z-index: 90;
  background: var(--paper);
  display: flex; flex-direction: column;
}
.overlay-head {
  flex: none; display: flex; align-items: center; gap: 14px;
  padding: 12px 20px; border-bottom: 2px solid var(--ink); background: var(--paper-raised);
}
.overlay-head .title { font-family: var(--display); font-size: 16px; font-weight: 600; }
.overlay-head .note { margin: 0; font-size: 11px; color: var(--ink-soft); }
.overlay-head .spacer { flex: 1; }
.fp-grid {
  flex: 1; overflow-y: auto; padding: 14px 20px;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(88px, 1fr)); gap: 8px;
}
.fp-tile {
  position: relative; border: 1px solid var(--rule); background: var(--paper-sunken);
  padding: 0; cursor: pointer; display: block;
}
.fp-tile:hover { border-color: var(--accent); }
/* Ratio lives on the img (like .exemplar canvas): grid stretch on the button
   ignores its aspect-ratio, which rendered the tiles as landscape strips. */
.fp-tile img { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; display: block; }
.fp-tile .ts {
  position: absolute; bottom: 4px; right: 4px; font-size: 9px; font-family: var(--mono);
  background: rgba(28, 26, 23, 0.85); color: var(--paper); padding: 1px 5px;
}
.ed-stage {
  flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center;
  padding: 14px; background: var(--paper-sunken);
}
.ed-stage canvas {
  height: 100%; width: auto; max-width: 100%;
  border: 1px solid var(--ink); background: var(--paper);
  cursor: crosshair; touch-action: none;
}

/* Class editor modal — Review's fallback for missed/changed classes. Its
   picker + box editor reuse the fixed overlays above (they sit on z 90). */
.class-modal { position: fixed; inset: 0; z-index: 80; display: flex; align-items: center; justify-content: center; }
.class-modal .cm-backdrop { position: absolute; inset: 0; background: rgba(28, 26, 23, 0.45); }
.class-modal .cm-panel {
  position: relative; width: min(880px, 94vw); max-height: 90vh;
  display: flex; flex-direction: column; background: var(--paper);
  border: 2px solid var(--ink); box-shadow: 12px 12px 0 rgba(28, 26, 23, 0.18);
}
.class-modal .cm-body { flex: 1; min-height: 0; overflow-y: auto; padding: 14px 18px 18px; }
.class-modal .cm-label {
  display: block; margin: 14px 0 4px; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-soft);
}
.class-modal .cm-label:first-child { margin-top: 0; }
.class-modal .cm-name { font-family: var(--display); font-size: 17px; font-weight: 600; width: 100%; }
.class-modal textarea.desc { margin-top: 0; }
.class-modal .cm-foot {
  flex: none; display: flex; align-items: center; gap: 10px;
  padding: 10px 18px; border-top: 1px solid var(--rule); background: var(--paper-raised);
}
.action.danger { color: var(--accent); border-color: var(--accent); }
.action.danger:hover { background: var(--accent); color: var(--paper); }
.class-modal .cm-foot .note { margin: 0; font-size: 11.5px; }
.class-modal .cm-foot .spacer { flex: 1; }

.lane-status { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--ink-soft); }
.lane-status .progress { width: 160px; }

/* ---------- Annotate page ---------- */

.annotate-layout { flex: 1; min-height: 0; display: flex; flex-direction: column; padding: 14px 20px 0; gap: 12px; }
.annotate-header { display: flex; align-items: center; gap: 16px; flex: none; flex-wrap: wrap; }
.annotate-header .progress { flex: 1; min-width: 200px; height: 8px; }
.status-wall {
  flex: 1; min-height: 0; overflow-y: auto;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr));
  gap: 4px; align-content: start; padding-bottom: 16px;
}
.wall-tile {
  aspect-ratio: 9 / 16; position: relative; overflow: hidden;
  background: var(--paper-sunken); border: 1px solid var(--rule); cursor: pointer;
}
.wall-tile img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0.35; }
.wall-tile.done img { opacity: 1; }
.wall-tile.done { border-color: var(--ok); }
.wall-tile.done::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--ok);
}
.wall-tile.failed { border-color: var(--accent); }
.wall-tile.failed::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent);
}
.wall-tile .count {
  position: absolute; bottom: 2px; right: 3px;
  font-size: 9px; color: var(--paper); background: rgba(28, 26, 23, 0.8); padding: 0 4px;
}

/* ---------- Review page ---------- */

.review-layout { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.review-main { flex: 1; min-height: 0; display: flex; gap: 0; }
.review-stage-col { flex: 1; min-width: 0; display: flex; flex-direction: column; padding: 12px 0 8px 20px; }
.review-stage { flex: 1; min-height: 0; }
.review-stage-bar { display: flex; align-items: center; gap: 10px; padding: 8px 0 0; flex: none; }

.review-rail {
  flex: none; width: 320px; display: flex; flex-direction: column;
  border-left: 1px solid var(--rule); margin-left: 16px; padding: 12px 20px 8px 16px;
  overflow-y: auto; gap: 12px;
}
.review-rail .frame-meta { font-size: 11.5px; color: var(--ink-soft); }
.det-list { display: flex; flex-direction: column; gap: 6px; }
.det-item {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--rule); background: var(--paper-raised);
  padding: 6px 10px; cursor: pointer; font-size: 12px;
}
.det-item.selected { border-color: var(--accent); background: rgba(122, 31, 31, 0.05); }
.det-item .swatch { width: 10px; height: 10px; flex: none; }
.det-item .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.det-item .conf { color: var(--ink-faint); font-size: 10.5px; }
.det-item button { border: none; background: none; color: var(--ink-faint); cursor: pointer; font-size: 12px; padding: 0 2px; }
.det-item button:hover { color: var(--accent); }

.class-picker {
  position: fixed; z-index: 80; width: 260px; max-height: 320px; overflow-y: auto;
  background: var(--paper-raised); border: 1px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(28, 26, 23, 0.15); padding: 8px;
}
.class-picker input { width: 100%; margin-bottom: 6px; }
.class-picker .option {
  padding: 5px 8px; font-size: 12px; cursor: pointer;
}
.class-picker .option:hover, .class-picker .option.active { background: rgba(122, 31, 31, 0.08); color: var(--accent); }
.class-picker .create { border-top: 1px solid var(--rule); margin-top: 4px; padding-top: 6px; }

.presence-timeline {
  flex: none; border-top: 2px solid var(--ink); background: var(--paper-raised);
  padding: 8px 20px 10px; max-height: 240px; display: flex; flex-direction: column;
}
.presence-head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; flex: none; }
.presence-head .matrix-search { margin-left: auto; width: 210px; font-size: 12px; padding: 3px 9px; }
.presence-scroll { overflow: auto; flex: 1; min-height: 0; }
.presence-grid { display: grid; grid-auto-rows: 16px; gap: 1px 0; width: max-content; }
.presence-row { display: flex; align-items: center; }
.presence-row .rlabel {
  position: sticky; left: 0; z-index: 2; width: 150px; flex: none;
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--ink-soft); background: var(--paper-raised);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding-right: 8px;
  cursor: pointer;
}
.presence-row .rlabel:hover { color: var(--accent); }
.presence-row canvas { display: block; }
.presence-row .row-edit {
  flex: none; margin-right: 8px; height: 14px; padding: 0 6px;
  border: 1px solid var(--rule); background: none; cursor: pointer;
  font-family: var(--mono); font-size: 9px; line-height: 1;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-soft);
}
.presence-row .row-edit:hover { color: var(--accent); border-color: var(--accent); }
.presence-row .row-edit.dirty { color: var(--warn); border-color: var(--warn); }
.presence-add { display: flex; align-items: center; margin-top: 6px; }
.presence-add button {
  border: 1px dashed var(--ink-soft); background: none; cursor: pointer;
  font-family: var(--mono); font-size: 10px; padding: 3px 12px;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft);
}
.presence-add button:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Training pages (RF-DETR + Crops) ---------- */

.train-layout { flex: 1; min-height: 0; overflow-y: auto; padding: 20px; }
.train-center { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }

.run-card { border: 1px solid var(--rule); background: var(--paper-raised); padding: 16px 20px; }
.run-card .run-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.run-card .stage { font-family: var(--display); font-size: 18px; font-weight: 600; }
.run-card .meta-list { margin-top: 12px; }
.run-card .run-actions { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }

.model-row {
  display: grid; grid-template-columns: 200px 1fr 120px 90px; gap: 14px;
  align-items: center; border: 1px solid var(--rule); background: var(--paper-raised);
  padding: 10px 16px; margin-bottom: 8px;
}
.model-row.running { border-color: color-mix(in srgb, var(--warn) 45%, var(--rule)); }
.model-row.failed { border-color: color-mix(in srgb, var(--bad) 40%, var(--rule)); }
.model-row .mname { font-family: var(--display); font-size: 15px; font-weight: 600; }
.model-row .mmsg { font-size: 11.5px; color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; }
.model-row .crop-strip { display: flex; gap: 4px; margin-top: 6px; }
.model-row .crop-strip img { width: 34px; height: 34px; object-fit: cover; border: 1px solid var(--rule); }
.fit-banner {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  border: 1px solid var(--rule); background: var(--paper-raised);
  padding: 12px 16px; margin: 16px 0 18px;
}
.fit-banner .fit-copy { flex: 1; min-width: 220px; }
.fit-banner .fit-title { font-family: var(--display); font-size: 16px; font-weight: 600; }
.fit-banner .fit-meta { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }
.fit-banner .progress { flex: 1; min-width: 160px; height: 8px; }

/* ---------- Test page ---------- */

.test-layout { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.test-topbar {
  flex: none; display: flex; align-items: center; gap: 12px;
  padding: 8px 16px; border-bottom: 1px solid var(--rule); flex-wrap: wrap;
}
.test-topbar select {
  background: var(--paper-raised); border: 1px solid var(--rule);
  font-family: var(--mono); font-size: 12px; padding: 6px 10px; max-width: 320px;
}
.test-decoder {
  position: absolute; width: 0; height: 0; opacity: 0;
  pointer-events: none;
}
.test-body {
  flex: 1; min-height: 0; display: flex; align-items: stretch;
  gap: 16px; padding: 8px 16px 10px;
}
.test-stage-col { flex: none; height: 100%; min-height: 0; display: flex; min-width: 0; }
.test-stage {
  height: 100%; aspect-ratio: 9 / 16; width: auto; flex: none;
  position: relative;
}
.test-status {
  position: absolute; inset: 0; z-index: 3; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  text-align: center; padding: 24px;
}
.test-status[hidden] { display: none; }
.test-status .fit-title { text-transform: capitalize; }
.test-status .progress { width: min(280px, 60%); height: 6px; }
.test-stage .drop-inner {
  position: absolute; inset: 0; z-index: 6; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px;
  border: 1.5px dashed var(--rule-strong); cursor: pointer; text-align: center;
  padding: 16px;
  background: var(--paper);
}
.test-stage .drop-inner:hover { border-color: var(--accent); }
.test-controls {
  position: absolute; left: 8px; right: 8px; bottom: 8px; z-index: 4;
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px;
  background: color-mix(in srgb, var(--paper-raised) 88%, transparent);
  border: 1px solid var(--rule);
}
.test-controls .play { width: 40px; height: 30px; font-size: 14px; padding: 0; }
.test-controls .run-note { font-size: 11px; color: var(--ink-soft); }
.test-right {
  flex: 1; min-width: 0; min-height: 0;
  display: flex; flex-direction: column;
}
.test-rail {
  flex: 1; min-height: 0; display: flex; flex-direction: column;
}
.test-tabs { flex: none; display: flex; border-bottom: 1px solid var(--rule); }
.test-tab {
  flex: 1; min-width: 0; display: flex; flex-direction: column;
  align-items: center; gap: 3px; padding: 6px 3px 5px;
  border-bottom: 2px solid transparent;
}
.test-tab.active { border-bottom-color: var(--accent); }
.test-tab .tab-name {
  border: none; background: none; font-family: var(--mono);
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0; cursor: pointer; color: var(--ink-soft);
}
.test-tab.active .tab-name { color: var(--accent); }
.test-tab .tab-vis { display: flex; gap: 2px; }
.test-tab .tab-vis button {
  border: 1px solid var(--rule); background: var(--paper-raised);
  font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.05em;
  text-transform: uppercase; padding: 1px 5px; cursor: pointer; color: var(--ink-soft);
}
.test-tab .tab-vis button:hover { color: var(--ink); border-color: var(--ink); }
.test-tab .tab-vis button.on { color: var(--ok); border-color: var(--ok); }
.test-tab.layer-off .tab-vis [data-vis="none"] { color: var(--accent); border-color: var(--accent); }
.test-tab-body { flex: 1; min-height: 0; overflow-y: auto; padding: 12px 4px 8px; font-size: 12px; }
.test-tab-body .entry {
  border: 1px solid var(--rule); background: var(--paper-raised);
  padding: 7px 10px; margin-bottom: 6px; cursor: default;
}
.test-tab-body .entry.clickable { cursor: pointer; }
.test-tab-body .entry.clickable:hover { border-color: var(--accent); }
.test-tab-body .entry .t { color: var(--ink-faint); font-size: 10px; }
.vis-filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.vis-chip {
  border: 1px solid var(--rule); background: var(--paper-raised);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 3px 8px; cursor: pointer; color: var(--ink-soft);
}
.vis-chip.on { color: var(--ink); border-color: var(--ink); }
.vis-chip.off { opacity: 0.4; }
.vis-row {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--rule); background: var(--paper-raised);
  padding: 6px 8px; margin-bottom: 4px;
}
.vis-row.item { margin-left: 18px; }
.vis-row.off { opacity: 0.42; }
.vis-row.focused { border-color: var(--accent); }
.vis-row input { accent-color: var(--ink); margin: 0; }
.vis-row .name { flex: 1; min-width: 0; cursor: pointer; border: none; background: none; text-align: left; padding: 0; }
.vis-row .name b { display: block; font-size: 12px; }
.vis-row .name .t { color: var(--ink-faint); font-size: 10px; }
.vis-row .swatch { width: 8px; height: 8px; flex: none; background: var(--ok); }
.vis-row.bad .swatch { background: var(--accent); }

.llm-call { width: 100%; text-align: left; display: block; }
.llm-call.selected { border-color: var(--ink); background: var(--paper); }
.llm-dossier {
  margin-top: 12px;
  border: 1px solid var(--ink);
  background: var(--paper-raised);
  padding: 12px 12px 14px;
}
.llm-stamp {
  display: inline-block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 2px 7px;
  margin-bottom: 8px;
}
.llm-kicker {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.llm-dossier h3 {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 520;
  line-height: 1.15;
  margin: 4px 0 10px;
}
.llm-chips { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.llm-chips span {
  font-size: 9.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--rule-strong);
  padding: 2px 7px;
  color: var(--ink-soft);
}
.llm-block { margin-bottom: 10px; }
.llm-block .k {
  display: block;
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 3px;
}
.llm-block p { margin: 0; font-size: 12px; line-height: 1.45; color: var(--ink); }
.llm-film {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.llm-film figure { margin: 0; flex: none; width: 112px; }
.llm-film img {
  display: block;
  width: 112px;
  height: 148px;
  object-fit: cover;
  background: var(--paper-sunken);
  border: 1px solid var(--rule);
}
.llm-film figcaption {
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 4px;
}
.llm-json {
  margin: 8px 0 0;
  max-height: 420px;
  overflow: auto;
  padding: 10px;
  background: var(--paper-sunken);
  border: 1px solid var(--rule);
  font-size: 10.5px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}
.llm-copy {
  float: right;
  border: 1px solid var(--rule);
  background: var(--paper);
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 8px;
  cursor: pointer;
}
.llm-copy:hover { border-color: var(--ink); }

.test-timeline {
  flex: none; border-top: 2px solid var(--ink);
  padding: 6px 0 0;
}
.test-timeline canvas { width: 100%; height: 52px; display: block; cursor: crosshair; }
.test-timeline .legend {
  display: flex; gap: 14px; font-size: 9.5px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--ink-faint); padding-top: 4px;
}
.test-timeline .legend i { display: inline-block; width: 8px; height: 8px; margin-right: 4px; }

/* ---------- Loading / skeleton ---------- */

.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--rule); border-top-color: var(--accent);
  animation: spin 0.8s linear infinite; display: inline-block; vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.skeleton { background: linear-gradient(90deg, var(--paper-sunken), var(--paper-raised), var(--paper-sunken)); background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

.topbar .sign-out {
  background: none; border: 0; padding: 0;
  font: inherit; font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-soft); cursor: pointer;
}
.topbar .sign-out:hover { color: var(--accent); }

.login-stage {
  flex: 1; display: grid; place-items: center;
  padding: 48px 20px 80px;
}
.login-card {
  width: min(100%, 420px);
  background: var(--paper-raised);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(28, 26, 23, 0.08);
  padding: 32px 28px 28px;
}
.login-kicker {
  margin: 0 0 8px;
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent);
}
.login-card h1 {
  margin: 0 0 10px;
  font-family: var(--display); font-weight: 600; font-size: 28px;
  letter-spacing: -0.02em;
}
.login-copy { margin: 0 0 22px; color: var(--ink-soft); }
.login-card label {
  display: block; margin: 14px 0 6px;
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-soft);
}
.login-card input {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--ink); background: var(--paper);
  font: inherit;
}
.login-card .action { width: 100%; margin-top: 22px; }
.login-status { min-height: 1.4em; margin: 12px 0 0; color: var(--accent); }