/**
 * Empty State Styles
 * ==================
 * Contextual empty state messages for panels with no content.
 * Provides helpful guidance rather than blank space.
 */

/* ============================================================================
   Base Empty State
   ============================================================================ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
  min-height: 12rem;
  animation: empty-state-fade-in 0.3s ease-out;
}

@keyframes empty-state-fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .empty-state {
    animation: none;
  }
}

/* ============================================================================
   Icon
   ============================================================================ */

.empty-state__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  margin-bottom: 1rem;
  border-radius: 50%;
  background: var(--bg-tertiary, #252540);
  color: var(--text-muted, #888);
  opacity: 0.6;
}

.empty-state__icon svg {
  width: 2rem;
  height: 2rem;
}

/* ============================================================================
   Text Content
   ============================================================================ */

.empty-state__title {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary, #e5e5e5);
  letter-spacing: -0.01em;
}

.empty-state__subtitle {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--text-muted, #888);
  max-width: 28ch;
  line-height: 1.5;
}

/* ============================================================================
   Hints List
   ============================================================================ */

.empty-state__hints {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: left;
  width: 100%;
  max-width: 24rem;
}

.empty-state__hint {
  position: relative;
  padding: 0.375rem 0 0.375rem 1.25rem;
  font-size: 0.8125rem;
  color: var(--text-secondary, #aaa);
  line-height: 1.4;
}

.empty-state__hint::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.625rem;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-color, #8b5cf6);
  opacity: 0.5;
}

/* ============================================================================
   Action Button
   ============================================================================ */

.empty-state__action {
  margin-top: 1rem;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  border: 1px solid var(--accent-color, #8b5cf6);
  background: transparent;
  color: var(--accent-color, #8b5cf6);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.empty-state__action:hover {
  background: var(--accent-color, #8b5cf6);
  color: var(--bg-primary, #0d0d1a);
}

.empty-state__action:focus-visible {
  outline: 2px solid var(--accent-color, #8b5cf6);
  outline-offset: 2px;
}

/* ============================================================================
   Welcome Variant
   ============================================================================ */

.empty-state--welcome {
  min-height: 16rem;
  padding: 2.5rem 2rem;
}

.empty-state--welcome .empty-state__title {
  font-size: 1.5rem;
  color: var(--accent-color, #8b5cf6);
}

.empty-state--welcome .empty-state__subtitle {
  max-width: 36ch;
  font-size: 1rem;
}

.empty-state__quick-start {
  width: 100%;
  max-width: 24rem;
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg-secondary, #1a1a2e);
  border-radius: 8px;
  text-align: left;
}

.empty-state__quick-start h4 {
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary, #e5e5e5);
}

/* ============================================================================
   Container Utility
   ============================================================================ */

.has-empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================================================
   Compact Variant (for smaller panels)
   ============================================================================ */

.empty-state--compact {
  padding: 1rem;
  min-height: 8rem;
}

.empty-state--compact .empty-state__icon {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 0.75rem;
}

.empty-state--compact .empty-state__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.empty-state--compact .empty-state__title {
  font-size: 0.9375rem;
}

.empty-state--compact .empty-state__subtitle {
  font-size: 0.8125rem;
  margin-bottom: 0;
}

.empty-state--compact .empty-state__hints {
  display: none;
}

/* ============================================================================
   Inline Variant (for inline messages within panels)
   ============================================================================ */

.empty-state--inline {
  flex-direction: row;
  text-align: left;
  padding: 1rem;
  min-height: auto;
  gap: 1rem;
  background: var(--bg-secondary, #1a1a2e);
  border-radius: 8px;
  border-left: 3px solid var(--accent-color, #8b5cf6);
}

.empty-state--inline .empty-state__icon {
  width: 2rem;
  height: 2rem;
  margin: 0;
  background: transparent;
}

.empty-state--inline .empty-state__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.empty-state--inline .empty-state__title {
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.empty-state--inline .empty-state__subtitle {
  font-size: 0.8125rem;
  margin: 0;
}

.empty-state--inline .empty-state__content {
  flex: 1;
}