/* css/explorer.css — the compact structure viewer in the Work column
   (rendered by js/explorer.js). */

.viewer {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  overflow: hidden;
}

.viewer-head,
.viewer-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
}

.viewer-head {
  border-bottom: 1px solid var(--line);
}

.viewer-foot {
  border-top: 1px solid var(--line);
}

.viewer-label,
.viewer-meta {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.viewer-picker {
  display: flex;
  gap: 0.25rem;
}

.viewer-chip {
  min-height: 32px;
  padding: 0 0.6rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  transition: color var(--dur-quick) var(--ease-out),
    border-color var(--dur-quick) var(--ease-out),
    background-color var(--dur-quick) var(--ease-out);
}

.viewer-chip:hover {
  color: var(--ink);
}

.viewer-chip[aria-pressed="true"] {
  color: var(--ink);
  border-color: var(--line);
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}

.viewer-toggle[aria-pressed="true"] {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.viewer-chip:disabled {
  cursor: progress;
}

.viewer-stage {
  position: relative;
  aspect-ratio: 1;
  cursor: grab;
  touch-action: pan-y;
}

.viewer-stage:active {
  cursor: grabbing;
}

.viewer-stage .poster {
  position: absolute;
  inset: 0;
}

.viewer-stage .poster img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}

.viewer.is-live .poster {
  display: none;
}

.viewer-canvas {
  position: absolute;
  inset: 0;
}

/* The canvas takes keyboard focus (arrows turn it); the ring sits inside the
   widget's clipped edge. */
.viewer-canvas:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: 0;
}

/* Thin progress bar while a structure or surface is building. */
.viewer-stage[data-busy]::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  background-size: 50% 100%;
  background-repeat: no-repeat;
  animation: viewer-busy 1s linear infinite;
}

@keyframes viewer-busy {
  from { background-position: -50% 0; }
  to { background-position: 150% 0; }
}

.viewer-tip {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  white-space: nowrap;
  pointer-events: none;
}

@media (max-width: 959px) {
  .viewer {
    max-width: 26rem;
  }
}