/* ── Loaders & Spinners ───────────────────────────────────────────────────── */

/* Spinner circular */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

.spinner--sm { width: 16px; height: 16px; }
.spinner--lg { width: 40px; height: 40px; border-width: 3px; }

@keyframes spin { to { transform: rotate(360deg); } }

/* Skeleton loader */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-input) 0%,
    var(--color-bg-hover) 50%,
    var(--color-bg-input) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-wave 1.6s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-wave {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Panel de output vacío / cargando */
.output-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-12);
  color: var(--color-text-dim);
  text-align: center;
}

.output-placeholder__icon {
  width: 48px;
  height: 48px;
  opacity: 0.3;
}

.output-placeholder__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Barra de progreso */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.4s ease;
  background: linear-gradient(90deg, var(--color-primary), #a78bfa);
}

.progress-bar--indeterminate .progress-bar__fill {
  width: 40% !important;
  animation: progress-slide 1.4s ease-in-out infinite;
}

@keyframes progress-slide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%);  }
}

/* Overlay de carga sobre el output */
.output-loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13, 13, 20, 0.75);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  backdrop-filter: blur(4px);
  z-index: 10;
}

.output-loading-overlay__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}