/* Loading / empty / error states, toast, modal. */

.loading { padding: 26px 12px; text-align: center; color: var(--dimmed); }
#app.is-loading::before {
  content: "";
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #d32f2f;
  transform-origin: left;
  animation: page-loading 1.15s ease-in-out infinite;
}
@keyframes page-loading {
  0% { transform: scaleX(0); opacity: 1; }
  75% { transform: scaleX(.82); opacity: 1; }
  100% { transform: scaleX(1); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  #app.is-loading::before { animation: none; transform: scaleX(.35); }
}
.empty { padding: 26px 12px; text-align: center; color: var(--dimmed); }
.error-box {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  padding: 12px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-size: calc(14px * var(--ui-scale));
}
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--link);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: -3px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--chip-bg);
  color: var(--on-dark);
  padding: 10px 18px;
  border-radius: 20px;
  font-size: calc(14px * var(--ui-scale));
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 900;
  max-width: 90vw;
}
.toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.is-error { background: var(--danger-text); }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}
.modal {
  background: var(--content-bg);
  border-radius: var(--radius);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
}
.modal-header {
  background: var(--block-header-bg);
  color: var(--block-header-fg);
  padding: 9px 14px;
  font-size: calc(17px * var(--ui-scale));
  display: flex;
  align-items: center;
}
.modal-header button {
  margin-left: auto;
  background: none;
  border: 0;
  color: inherit;
  font-size: calc(20px * var(--ui-scale));
  cursor: pointer;
  line-height: 1;
}
.modal-body { padding: 14px; }
.modal-footer {
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}