/* Shared identity and artwork. Surface panels keep their opaque contrast. */
:root { --workspace-image: url('/static/img/flag-together.webp'); }
:root[data-background='swarm'] { --workspace-image: url('/static/img/swarm-core.webp'); }
:root[data-background='viper'] { --workspace-image: url('/static/img/viper-watermark.png'); }
:root[data-background='plain'] { --workspace-image: none; }

.workspace-art {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--workspace-image) right bottom / min(1400px, 100vw) auto no-repeat;
  opacity: 0.6;
  mask-image: linear-gradient(to bottom, transparent 12%, var(--s-void) 55%);
}
:root[data-background='viper'] .workspace-art {
  background-size: min(560px, 80vw);
  background-position: right var(--sp-12) bottom var(--sp-12);
  opacity: 0.24;
}
body:has(.landing) .workspace-art,
body:has(.landing) .appearance-picker,
:root:not([data-background]) .appearance-picker { display: none; }

.user-pill .identity-avatar {
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: var(--r-panel);
  border: 1px solid var(--line-tick);
  background: var(--s-card);
  object-fit: cover;
}
.user-pill .identity-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.chip .avatar { width: 24px; height: 24px; }

.appearance-picker {
  position: fixed;
  right: var(--sp-3);
  bottom: var(--sp-12);
  z-index: 4;
  font-size: var(--t-ui);
}
.appearance-picker > summary {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  min-height: 40px;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--line-tick);
  border-radius: var(--r-panel);
  background: var(--s-panel);
  color: var(--text-body);
  box-shadow: var(--shadow-bevel);
  cursor: pointer;
  list-style: none;
}
.appearance-picker > summary::-webkit-details-marker { display: none; }
.appearance-picker > summary:hover,
.appearance-picker[open] > summary { color: var(--sig); border-color: var(--sig); }
.appearance-options {
  position: absolute;
  right: 0;
  bottom: calc(100% + var(--sp-2));
  width: min(260px, calc(100vw - 24px));
  padding: var(--sp-4);
  border: 1px solid var(--line-tick);
  border-radius: var(--r-panel);
  background: var(--s-panel);
  box-shadow: var(--shadow-float);
}
.appearance-options fieldset { margin: 0; padding: 0; border: 0; }
.appearance-options legend { margin-bottom: var(--sp-3); font-weight: 600; color: var(--text-max); }
.appearance-options label {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  min-height: 44px;
  padding: var(--sp-2);
  border-radius: var(--r-panel);
  cursor: pointer;
}
.appearance-options label:has(input:checked) { background: var(--sig-dim); color: var(--text-max); }
.appearance-options input { accent-color: var(--sig); }
.appearance-options p { margin: var(--sp-3) 0 0; font-size: var(--t-meta); color: var(--text-label); }

/* Use the same selected artwork in the existing mast without adding rows. */
.app-header.board-header {
  background-image: linear-gradient(90deg, var(--s-panel) 42%, color-mix(in srgb, var(--s-panel) 88%, transparent)), var(--workspace-image);
  background-position: center, right 38%;
  background-size: auto, 900px auto;
  background-repeat: no-repeat;
}

@media (max-width: 640px) {
  .workspace-art { background-size: auto 75vh; background-position: 68% bottom; opacity: 0.4; }
  .appearance-picker { bottom: var(--sp-12); }
  .appearance-picker > summary { width: 44px; height: 44px; padding: var(--sp-2); justify-content: center; }
  .appearance-picker > summary > span { display: none; }
  .user-pill .identity-avatar { width: 28px; height: 28px; }
}

@media print { .workspace-art, .appearance-picker { display: none; } }