/* Loading Component Base Styles */
.ccl-loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* Size Variants */
.ccl-loading--sm {
  --loading-size: 1rem;
  --loading-bar-height: 0.25rem;
  --loading-pulse-size: 0.5rem;
}

.ccl-loading--md {
  --loading-size: 1.5rem;
  --loading-bar-height: 0.375rem;
  --loading-pulse-size: 0.75rem;
}

.ccl-loading--lg {
  --loading-size: 2rem;
  --loading-bar-height: 0.5rem;
  --loading-pulse-size: 1rem;
}

/* Spinner Variant */
.ccl-loading__spinner {
  width: var(--loading-size);
  height: var(--loading-size);
  position: relative;
}

.ccl-loading__spinner-ring {
  width: 100%;
  height: 100%;
  border: 2px solid var(--color-surface-muted, #e5e7eb);
  border-top: 2px solid var(--color-primary-default, #3b82f6);
  border-radius: var(--radius-pill, 50%);
  box-sizing: border-box;
}

.ccl-loading__spinner--animated .ccl-loading__spinner-ring {
  animation: ccl-loading-spin var(--motion-duration-sm, 1s) linear infinite;
}

/* Progress Bar Variant */
.ccl-loading__bar-container {
  width: 200px;
  height: var(--loading-bar-height);
  background-color: var(--color-surface-muted, #e5e7eb);
  border-radius: var(--radius-sm, 0.25rem);
  overflow: hidden;
  position: relative;
}

.ccl-loading__bar {
  height: 100%;
  background-color: var(--color-primary-default, #3b82f6);
  border-radius: var(--radius-sm, 0.25rem);
  width: 0%;
}

.ccl-loading__bar--animated {
  animation: ccl-loading-bar var(--motion-duration-sm, 1.5s) ease-in-out infinite;
}

/* Pulse Variant */
.ccl-loading__pulse {
  display: flex;
  align-items: center;
  gap: calc(var(--loading-pulse-size) * 0.25);
}

.ccl-loading__pulse-dot {
  width: var(--loading-pulse-size);
  height: var(--loading-pulse-size);
  background-color: var(--color-primary-default, #3b82f6);
  border-radius: var(--radius-pill, 50%);
}

.ccl-loading__pulse--animated .ccl-loading__pulse-dot:nth-child(1) {
  animation: ccl-loading-pulse var(--motion-duration-sm, 1.4s) ease-in-out infinite;
}

.ccl-loading__pulse--animated .ccl-loading__pulse-dot:nth-child(2) {
  animation: ccl-loading-pulse var(--motion-duration-sm, 1.4s) ease-in-out infinite;
  animation-delay: 0.2s;
}

.ccl-loading__pulse--animated .ccl-loading__pulse-dot:nth-child(3) {
  animation: ccl-loading-pulse var(--motion-duration-sm, 1.4s) ease-in-out infinite;
  animation-delay: 0.4s;
}

/* Static State */
.ccl-loading--static .ccl-loading__spinner-ring {
  border-top-color: var(--color-primary-default, #3b82f6);
}

.ccl-loading--static .ccl-loading__bar {
  width: 30%;
}

.ccl-loading--static .ccl-loading__pulse-dot {
  opacity: 0.6;
}

/* Animations */
@keyframes ccl-loading-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes ccl-loading-bar {
  0% {
    width: 0%;
    transform: translateX(-100%);
  }
  50% {
    width: 100%;
    transform: translateX(0%);
  }
  100% {
    width: 0%;
    transform: translateX(100%);
  }
}

@keyframes ccl-loading-pulse {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Accessibility - screen readers will announce loading state via role="status" */

/* Focus styles for interactive contexts */
.ccl-loading:focus-visible {
  outline: 2px solid var(--color-primary-default, #3b82f6);
  outline-offset: 2px;
  border-radius: var(--radius-sm, 0.25rem);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .ccl-loading__spinner-ring {
    border-color: currentColor;
    border-top-color: var(--color-primary-default, #3b82f6);
  }
  
  .ccl-loading__bar {
    background-color: currentColor;
  }
  
  .ccl-loading__pulse-dot {
    background-color: currentColor;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .ccl-loading__spinner--animated .ccl-loading__spinner-ring,
  .ccl-loading__bar--animated,
  .ccl-loading__pulse--animated .ccl-loading__pulse-dot {
    animation: none;
  }
  
  .ccl-loading--static .ccl-loading__bar {
    width: 50%;
  }
}