.ui-panel,
.ui-card,
.ui-empty-state,
.ui-region-state {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}

.ui-panel {
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.ui-card {
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.ui-chip,
.ui-pill,
.ui-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 2rem;
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.2;
}

.ui-chip,
.ui-pill {
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.55);
}

.ui-status[data-tone="success"] {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.ui-status[data-tone="warning"] {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.ui-status[data-tone="danger"] {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.ui-status[data-tone="info"] {
  background: var(--color-info-soft);
  color: var(--color-info);
}

.ui-section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-4);
}

.ui-section-heading > * {
  margin: 0;
}

.ui-stack {
  display: grid;
  gap: var(--space-6);
}

.ui-stack[data-density="compact"] {
  gap: var(--space-4);
}

.ui-grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}

.ui-workspace {
  width: min(calc(100% - 2rem), var(--workspace-max-width));
  margin: 0 auto;
}

.ui-split {
  display: grid;
  gap: var(--space-8);
}

.ui-empty-state,
.ui-region-state {
  display: grid;
  justify-items: start;
  gap: var(--space-3);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.ui-empty-state[data-tone="warning"],
.ui-region-state[data-tone="warning"] {
  border-color: rgba(139, 94, 22, 0.22);
  background: var(--color-warning-soft);
}

.ui-empty-state[data-tone="danger"],
.ui-region-state[data-tone="danger"] {
  border-color: rgba(157, 47, 47, 0.22);
  background: var(--color-danger-soft);
}

.ui-empty-state[data-tone="info"],
.ui-region-state[data-tone="info"] {
  border-color: rgba(33, 94, 155, 0.22);
  background: var(--color-info-soft);
}

.ui-region-state[hidden] {
  display: none;
}

.ui-region-state__title,
.ui-empty-state__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
}

.ui-region-state__body,
.ui-empty-state__body {
  margin: 0;
  color: var(--color-stone-dark);
}

.ui-skeleton {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: linear-gradient(
    90deg,
    rgba(200, 195, 185, 0.95) 0%,
    rgba(220, 215, 205, 0.98) 15%,
    rgba(240, 238, 235, 1) 50%,
    rgba(220, 215, 205, 0.98) 85%,
    rgba(200, 195, 185, 0.95) 100%
  );
  background-size: 250% 100%;
  animation: ui-skeleton-shimmer 1s linear infinite;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04);
}

.ui-skeleton[data-height="sm"] {
  height: 0.875rem;
}

.ui-skeleton[data-height="md"] {
  height: 1.25rem;
}

.ui-skeleton[data-height="lg"] {
  height: 2rem;
}

.ui-persona-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  background: rgba(255, 255, 255, 0.78);
  color: var(--persona-accent);
  font-size: 0.875rem;
}

@media (min-width: 960px) {
  .ui-split[data-columns="2"] {
    grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  }
}

@keyframes ui-skeleton-shimmer {
  0% {
    background-position: 250% 0;
  }

  50% {
    background-position: 0% 0;
  }

  100% {
    background-position: -250% 0;
  }
}

@keyframes ui-skeleton-pulse {
  0% {
    opacity: 0.8;
  }

  50% {
    opacity: 1;
  }

  100% {
    opacity: 0.8;
  }
}

@keyframes ui-skeleton-glow {
  0% {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04), 0 0 0 0 rgba(0, 0, 255, 0.04);
  }

  50% {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04), 0 0 8px 2px rgba(0, 0, 255, 0.08);
  }

  100% {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04), 0 0 0 0 rgba(0, 0, 255, 0.04);
  }
}