/**
 * Modal Components
 *
 * Accessible modal dialogs with backdrop overlay.
 */

/* ==========================================================================
   Modal Backdrop
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal), backdrop-filter var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

/* Dark theme: darker backdrop */
.theme-dark .modal-backdrop {
  background-color: rgba(0, 0, 0, 0.75);
}

/* ==========================================================================
   Modal Container
   ========================================================================== */

.modal {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  max-height: calc(100vh - var(--space-8));
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(-10px);
  transition: transform var(--transition-normal);
}

.modal-backdrop.open .modal {
  transform: scale(1) translateY(0);
}

/* ==========================================================================
   Modal Sizes
   ========================================================================== */

.modal-sm {
  max-width: 400px;
}

.modal-lg {
  max-width: 700px;
}

.modal-xl {
  max-width: 900px;
}

.modal-fullscreen {
  max-width: calc(100vw - var(--space-8));
  max-height: calc(100vh - var(--space-8));
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   Modal Header
   ========================================================================== */

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal-title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-primary);
}

.modal-close:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ==========================================================================
   Modal Body
   ========================================================================== */

.modal-body {
  padding: var(--space-4);
  overflow-y: auto;
  flex-grow: 1;
}

/* ==========================================================================
   Modal Footer
   ========================================================================== */

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal-footer-left {
  justify-content: flex-start;
}

.modal-footer-center {
  justify-content: center;
}

.modal-footer-between {
  justify-content: space-between;
}

/* ==========================================================================
   Confirmation Modal Variant
   ========================================================================== */

.modal-confirm .modal-body {
  text-align: center;
  padding: var(--space-6);
}

.modal-confirm .modal-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.modal-confirm .modal-icon-warning {
  background-color: var(--color-warning-subtle);
  color: var(--color-warning);
}

.modal-confirm .modal-icon-error {
  background-color: var(--color-error-subtle);
  color: var(--color-error);
}

.modal-confirm .modal-icon-success {
  background-color: var(--color-success-subtle);
  color: var(--color-success);
}

.modal-confirm .modal-icon-info {
  background-color: var(--color-info-subtle);
  color: var(--color-info);
}

.modal-confirm .modal-footer {
  justify-content: center;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

/* Prevent body scroll when modal is open */
body.modal-open {
  overflow: hidden;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .modal-backdrop {
    transition: none;
  }

  .modal {
    transition: none;
    transform: none;
  }

  .modal-backdrop.open .modal {
    transform: none;
  }
}