/* ==================================== */
/* MULTI-VIEW LAYOUT SYSTEM             */
/* ==================================== */

/* ==================================== */
/* VIEW MODE BUTTONS (Toolbar)          */
/* ==================================== */
.view-mode-buttons {
  display: flex;
  gap: 4px;
  margin-right: auto;
  padding-right: 12px;
  border-right: 1px solid var(--border-medium);
}

.btn-view-mode {
  width: 38px;
  height: 38px;
  padding: 8px;
  border: 1px solid var(--border-medium);
  border-radius: var(--border-radius-pill);
  background: var(--bg-input);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-view-mode:hover {
  border-color: var(--accent-primary);
  background: var(--bg-sidebar-hover);
}

.btn-view-mode.active {
  border-color: var(--accent-primary);
  background: rgba(217, 119, 87, 0.1);
}

.btn-view-mode svg {
  width: 100%;
  height: 100%;
  stroke: var(--text-secondary);
  fill: none;
  stroke-width: 1.5;
}

.btn-view-mode.active svg {
  stroke: var(--accent-primary);
}

/* ==================================== */
/* MULTI-VIEW CONTAINER                 */
/* ==================================== */
.multi-view-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 8px 0 0 0;
  overflow: hidden;
  gap: 8px;
  width: 100%;
  height: 100%;
  border-bottom: none;
}

/* ==================================== */
/* MODE 1: SINGLE VIEW                  */
/* ==================================== */
.multi-view-container[data-mode="1"] {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.multi-view-container[data-mode="1"] .view-container {
  flex: 1;
  width: 100%;
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 1;
  border: none;
  box-shadow: none;
}

/* ==================================== */
/* MODE 3: MAIN + 2 THUMBNAILS (TOP)    */
/* ==================================== */
.multi-view-container[data-mode="3"] {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  height: 100%;
}

.multi-view-container[data-mode="3"] .view-container.main {
  flex: 1;
  width: 100%;
  min-height: 0;
  order: 2;
}

.multi-view-container[data-mode="3"] .view-container.thumbnail {
  width: 120px;
  height: 80px;
  flex-shrink: 0;
  order: 1;
}

/* Thumbnails row wrapper for mode 3 */
.multi-view-container[data-mode="3"]::before {
  content: '';
  display: none;
}

/* ==================================== */
/* MODE 4: MAIN + 3 THUMBNAILS (TOP)    */
/* ==================================== */
.multi-view-container[data-mode="4"] {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  height: 100%;
}

.multi-view-container[data-mode="4"] .view-container.main {
  flex: 1;
  width: 100%;
  min-height: 0;
  order: 2;
}

.multi-view-container[data-mode="4"] .view-container.thumbnail {
  width: 120px;
  height: 80px;
  flex-shrink: 0;
  order: 1;
}

/* ==================================== */
/* THUMBNAILS ROW                       */
/* ==================================== */
.thumbnails-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-shrink: 0;
}

/* Add view container in thumbnails row */
.multi-view-container[data-mode="3"] .add-view-container,
.multi-view-container[data-mode="4"] .add-view-container {
  width: 120px;
  height: 80px;
  min-height: auto;
  order: 1;
}

/* ==================================== */
/* VIEW CONTAINER                       */
/* ==================================== */
.view-container {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: var(--bg-canvas);
  border: 1px solid var(--border-light);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.view-container:hover {
  border-color: var(--border-medium);
}

.view-container.thumbnail {
  cursor: pointer;
}

.view-container.thumbnail:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 4px 12px rgba(217, 119, 87, 0.15);
}

/* ==================================== */
/* VIEW SVG                             */
/* ==================================== */
.view-svg {
  width: 100%;
  height: 100%;
  background: var(--bg-canvas);
}

/* ==================================== */
/* VIEW LABEL (Hover)                   */
/* ==================================== */
.view-label {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--border-radius-pill);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
  z-index: 10;
}

.view-container:hover .view-label {
  opacity: 1;
}

/* ==================================== */
/* VIEW CONTROLS                        */
/* ==================================== */
.view-controls {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 10;
}

.view-container:hover .view-controls {
  opacity: 1;
}

.view-btn-close {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: bold;
  transition: all var(--transition-fast);
}

.view-btn-close:hover {
  background: var(--accent-danger);
  transform: scale(1.1);
}

/* ==================================== */
/* ADD VIEW BUTTON (GLOBAL)             */
/* ==================================== */
.add-view-container {
  position: relative;
  border: 2px dashed var(--border-medium);
  border-radius: var(--border-radius-md);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 100px;
}

.add-view-container:hover {
  border-color: var(--accent-primary);
  background: rgba(217, 119, 87, 0.05);
}

.add-view-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--border-medium);
  background: white;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 300;
  transition: all var(--transition-fast);
}

.add-view-container:hover .add-view-btn {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: scale(1.1);
}

/* ==================================== */
/* ADD VIEW DROPDOWN                    */
/* ==================================== */
.add-view-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 8px;
  padding: 8px 0;
  background: white;
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-md);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  z-index: 100;
  min-width: 160px;
  display: none;
}

.add-view-dropdown.open {
  display: block;
}

.add-view-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.add-view-option:hover {
  background: var(--bg-sidebar-hover);
}

.add-view-option.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.add-view-option-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-primary);
}

.add-view-option[data-type="normal"] .add-view-option-dot { background: #4CAF50; }
.add-view-option[data-type="acetic"] .add-view-option-dot { background: #2196F3; }
.add-view-option[data-type="lugol"] .add-view-option-dot { background: #9C27B0; }
.add-view-option[data-type="vagin"] .add-view-option-dot { background: #FF9800; }

/* ==================================== */
/* VIEW FILTERS (Applied to SVG)        */
/* ==================================== */
.view-container[data-filter="acetic"] .view-svg #layer-background {
  filter: contrast(1.2) brightness(1.1);
}

.view-container[data-filter="lugol"] .view-svg #layer-background {
  filter: sepia(0.3) contrast(1.1);
}

/* ==================================== */
/* RESPONSIVE                           */
/* ==================================== */
@media (max-width: 768px) {
  .multi-view-container[data-mode="3"],
  .multi-view-container[data-mode="4"] {
    max-height: none;
  }

  .multi-view-container[data-mode="3"] .view-container.thumbnail,
  .multi-view-container[data-mode="4"] .view-container.thumbnail {
    max-height: 150px;
  }

  .btn-view-mode {
    width: 34px;
    height: 34px;
    padding: 6px;
  }
}

@media (max-width: 480px) {
  .multi-view-container {
    padding: 4px;
    gap: 4px;
  }

  .view-label {
    font-size: 9px;
    padding: 2px 6px;
  }

  .view-btn-close {
    width: 20px;
    height: 20px;
    font-size: 12px;
  }
}