/**
 * @fileoverview MathPix Image Manager Modal Styles — Phase 8H.1
 * @module mathpix-image-manager.css
 * @version 1.1.0
 * @since Phase 8H.1
 *
 * @description
 * Styles for the Image Manager modal that allows users to view, replace,
 * add, and delete images in restored OCR documents.
 *
 * Plain CSS — no variables. Literal colour values throughout.
 * Colours are separated into the top section for easy theming.
 * WCAG 2.2 AA compliant focus states and contrast.
 */

/* — High contrast colour overrides — */

@media (prefers-contrast: high) {
  .image-manager-card {
    border-width: 2px;
    border-color: black;
  }

  .image-manager-btn {
    border-width: 2px;
    border-color: black;
  }

  .image-manager-header {
    border-bottom-width: 2px;
  }

  .image-manager-close-btn:hover {
    border-color: black;
  }
}

/* ============================================================================
   MODAL BACKDROP
   ============================================================================ */

.image-manager-backdrop {
  position: fixed;
  inset: 0;
  z-index: 9998;
}

.image-manager-backdrop[hidden] {
  display: none;
}

/* ============================================================================
   MODAL DIALOG
   ============================================================================ */

.image-manager-modal {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  margin: 0;
  padding: 0;
  border: none;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.image-manager-modal:not([open]) {
  display: none;
}

/* Remove default dialog backdrop (we use our own) */
.image-manager-modal::backdrop {
  display: none;
}

/* ============================================================================
   MODAL CONTAINER
   ============================================================================ */

.image-manager-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

/* ============================================================================
   MODAL HEADER
   ============================================================================ */

.image-manager-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  flex-shrink: 0;
}

.image-manager-header h2 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
}

.image-manager-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border-radius: 4px;
  cursor: pointer;
}

.image-manager-close-btn:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 2px;
}

/* ============================================================================
   MODAL TOOLBAR
   ============================================================================ */

.image-manager-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  flex-shrink: 0;
}

.image-manager-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  line-height: 1.5;
  border-radius: 6px;
  cursor: pointer;
}

.image-manager-action-btn:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 2px;
}

.image-manager-count {
  font-size: 0.8rem;
}

/* ============================================================================
   IMAGE GRID
   ============================================================================ */

.image-manager-grid {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  align-content: start;
  list-style: none;
  margin: 0;
}

/* Definition list metadata — reset browser defaults */
.image-manager-meta dd {
  margin: 0;
}

/* ============================================================================
   IMAGE CARDS
   ============================================================================ */

.image-manager-card {
  display: flex;
  flex-direction: column;
  border-radius: 6px;
  overflow: hidden;
}

/* Thumbnail container */
.image-manager-thumbnail {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  max-height: 200px;
  padding: 0.5rem;
  overflow: hidden;
}

.image-manager-thumbnail img {
  max-width: 100%;
  max-height: 180px;
  object-fit: contain;
}

/* Metadata section */
.image-manager-meta {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.5rem 0.65rem;
  font-size: 0.75rem;
  line-height: 1.4;
  margin: 0;
}

.image-manager-id {
  font-family: monospace;
  font-size: 0.7rem;
  word-break: break-all;
}

/* Card actions */
.image-manager-actions {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem 0.65rem;
}

.image-manager-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.3rem 0.6rem;
  font-size: 0.7rem;
  line-height: 1.5;
  border-radius: 4px;
  cursor: pointer;
}

/* ============================================================================
   EMPTY STATE
   ============================================================================ */

.image-manager-empty {
  text-align: center;
  padding: 3rem 1rem;
  font-size: 0.95rem;
}

.image-manager-empty[hidden] {
  display: none;
}

/* ============================================================================
   RESPONSIVE — TABLETS
   ============================================================================ */

@media (max-width: 768px) {
  .image-manager-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    padding: 0.75rem;
  }

  .image-manager-header {
    padding: 0.5rem 0.75rem;
  }

  .image-manager-toolbar {
    padding: 0.5rem 0.75rem;
  }
}

/* ============================================================================
   RESPONSIVE — MOBILE
   ============================================================================ */

@media (max-width: 640px) {
  .image-manager-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding: 0.5rem;
  }

  .image-manager-card {
    flex-direction: row;
    align-items: stretch;
  }

  .image-manager-thumbnail {
    min-height: auto;
    max-height: none;
  }

  .image-manager-thumbnail img {
    max-height: 80px;
  }

  .image-manager-card > :not(.image-manager-thumbnail) {
    flex: 1;
    min-width: 0;
  }

  .image-manager-actions {
    flex-wrap: wrap;
  }
}

/* ============================================================================
   REDUCED MOTION
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  .image-manager-modal,
  .image-manager-backdrop,
  .image-manager-card,
  .image-manager-btn {
    transition: none !important;
    animation: none !important;
  }
}

/* ============================================================================
   PRINT — HIDE MODAL
   ============================================================================ */

@media print {
  .image-manager-modal,
  .image-manager-backdrop {
    display: none !important;
  }
}