:root {
  --avatar-size: 40px;
  --scrollbar-width: 8px;
  --radius: 6px;
  --gap: 16px;
  --small-gap: 8px;

  --overlay-bg: rgba(0, 0, 0, 0.5);
  --dialog-bg: #fff;
  --panel-bg-light: #f9f9f9;
  --panel-border: #e5e5e5;
  --form-bg: #fff;
  --text-color: #333;
  --muted-color: #666;
  --primary-color: #007bff;
  --primary-hover: #0056b3;
  --error-color: #d9534f;
  --input-border: #ccc;
  --input-focus: #007bff;
  --button-bg: #007bff;
  --button-hover: #0056b3;
  --button-text: #fff;
}

body.mask-modal-open {
  overflow: hidden !important;
  touch-action: none;
}

#mask-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  animation: fadeIn 0.2s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

#mask-dialog {
  background: var(--dialog-bg);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  width: 90vw;
  max-width: 1000px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--text-color);
  font-size: 1rem;
}

.mask-content {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 380px;
}

/* Общие стили для панелей */
.mask-preview-panel,
.mask-form-panel,
.mask-storage-panel,
.mask-actions {
  background: var(--panel-bg-light);
  padding: var(--gap);
}

.mask-actions {
  background: #fafafa;
  border-top: 1px solid var(--panel-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--small-gap);
}

/* Панели */
.mask-preview-panel {
  flex: 0 0 25%;
  border-right: 1px solid var(--panel-border);
  overflow-y: auto;
  min-width: 160px;
  max-width: 260px;
}

.mask-form-panel {
  flex: 1 1 0;
  padding: var(--gap);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  min-width: 200px;
}

.mask-storage-panel {
  flex: 0 0 25%;
  border-left: 1px solid var(--panel-border);
  display: grid;
  grid-auto-rows: min-content;
  row-gap: var(--small-gap);
  overflow-y: auto;
  min-width: 160px;
  max-width: 260px;
}

.mask-storage-panel.drag-over {
  background-color: rgba(0, 123, 255, 0.05);
}

.mask-templates-container {
  margin-bottom: var(--gap);
  display: flex;
  align-items: center;
}

.mask-templates-container label {
  margin-right: var(--small-gap);
  font-weight: 600;
  color: var(--text-color);
}

.mask-templates-container select {
  padding: var(--small-gap);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  font-size: 1rem;
  background: var(--form-bg);
  outline: none;
}

.mask-templates-container select:focus-visible {
  border-color: var(--input-focus);
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

.mask-form {
  display: flex;
  flex-direction: column;
  row-gap: var(--gap);
}

.mask-form-field {
  display: flex;
  flex-direction: column;
  row-gap: var(--small-gap);
}

.mask-field-label {
  font-weight: 600;
  color: var(--text-color);
}

.mask-field-input,
.mask-form-field textarea {
  padding: var(--small-gap);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  font-size: 1rem;
  color: var(--text-color);
  background: var(--form-bg);
  outline: none;
  resize: vertical;
  transition: border-color 0.2s;
}

.mask-field-input:focus-visible,
.mask-form-field textarea:focus-visible {
  border-color: var(--input-focus);
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

.mask-template-btn {
  align-self: flex-start;
  background: transparent;
  border: none;
  color: var(--primary-color);
  font-size: 0.875rem;
  cursor: pointer;
  padding: 0;
  transition: background-color 0.2s, transform 0.2s;
}

.mask-template-btn:hover,
.mask-template-btn:focus-visible {
  text-decoration: underline;
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

.mask-storage-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--small-gap);
  padding: calc(var(--small-gap)*1.5) var(--gap);
  background: var(--form-bg);
  border: 1px solid var(--input-border);
  cursor: grab;
  transition: box-shadow 0.2s, transform 0.2s;
  border-radius: var(--radius);
}

.mask-storage-item:active {
  cursor: grabbing;
}

.mask-storage-item.highlight,
.mask-storage-item.mask-dragging {
  opacity: 0.6;
  outline: 2px dashed var(--primary-color);
  outline-offset: 2px;
}

.mask-storage-item.drop-target {
  border: 2px dashed var(--primary-color);
  margin: 0;
  padding: calc(var(--small-gap)-1px) var(--gap);
}

.mask-storage-item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.mask-placeholder {
  background-color: rgba(0, 123, 255, 0.1);
  border: 2px dashed var(--primary-color);
  margin: var(--small-gap) 0;
  transition: background-color 0.2s, border-color 0.2s, transform 0.2s;
  min-height: var(--avatar-size);
}

.mask-storage-avatar {
  width: var(--avatar-size);
  height: var(--avatar-size);
  object-fit: cover;
  border-radius: 50%;
  background: #eaeaea;
}

.mask-preview-avatar {
  width: auto;
  height: auto;
  max-width: 200px;
  max-height: 250px;
  margin-bottom: var(--gap);
  object-fit: contain;
  border-radius: var(--radius);
}

.mask-preview-bbcode,
.mask-preview-html,
.mask-preview-text,
.mask-preview-link {
  margin-bottom: var(--small-gap);
  color: var(--text-color);
  line-height: 1.4;
}

.mask-preview-link {
  text-decoration: none;
  color: var(--primary-color);
}

.mask-preview-link:hover {
  text-decoration: underline;
}

.mask-preview-code {
  margin-top: var(--gap);
  padding: var(--gap);
  background: #f5f5f5;
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  color: #555;
  max-height: 150px;
  overflow: auto;
}

/* Actions */
.mask-action-btn {
  background: var(--button-bg);
  color: var(--button-text);
  border: none;
  border-radius: var(--radius);
  padding: var(--small-gap) var(--gap);
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
  min-width: 120px;
}

.mask-action-btn:hover,
.mask-action-btn:focus-visible {
  background: var(--button-hover);
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

/* Delete button */
.mask-delete-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--error-color);
  font-weight: bold;
  border-radius: 50%;
  padding: 2px 6px;
  cursor: pointer;
  line-height: 1;
  transition: background 0.2s, color 0.2s;
}

.mask-delete-btn:focus-visible {
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

.mask-errors {
  margin-top: var(--small-gap);
  color: var(--error-color);
  font-size: 0.875rem;
}

/* Tooltip */
.mask-tooltip {
  position: fixed;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  padding: var(--small-gap);
  border-radius: var(--small-gap);
  font-size: 0.875rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 2001;
  max-width: 240px;
  word-break: break-word;
}

.mask-tooltip--visible {
  opacity: 1;
}

.mask-storage-item.mask-dragging ~ .mask-tooltip,
.mask-tooltip--visible:empty {
  display: none !important;
}

.mask-tooltip-field {
  margin-bottom: 4px;
}
.mask-tooltip-field:last-child {
  margin-bottom: 0;
}

/* Drag handle */
.drag-handle {
  cursor: grab;
  user-select: none;
  font-size: 1.3em;
  margin-right: 8px;
  color: #bbb;
  transition: color 0.2s;
  vertical-align: middle;
}
.drag-handle:active {
  cursor: grabbing;
  color: #888;
}

.mask-preview-panel::-webkit-scrollbar,
.mask-storage-panel::-webkit-scrollbar {
  width: var(--scrollbar-width);
}
.mask-preview-panel::-webkit-scrollbar-thumb,
.mask-storage-panel::-webkit-scrollbar-thumb {
  background: var(--input-border);
  border-radius: 4px;
}
.mask-preview-panel::-webkit-scrollbar-thumb:hover,
.mask-storage-panel::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* Тосты */
.mask-toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%) translateY(40px);
  background: #252f36;
  color: #fff;
  padding: 12px 28px;
  border-radius: 8px;
  box-shadow: 0 6px 32px rgba(0,0,0,0.23);
  font-size: 16px;
  opacity: 0;
  z-index: 9999;
  pointer-events: none;
  transition: opacity .23s, transform .25s cubic-bezier(.22, .7, .4, 1.2);
  display: flex;
  align-items: center;
  gap: 12px;
}
.mask-toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.mask-toast--success { background: #259b24; }
.mask-toast--error { background: #e64a19; }
.mask-toast--warn  { background: #ffd600; color: #252f36; }
.mask-toast--info  { background: #252f36; }

.mask-toast-undo {
  background: var(--button-bg);
  color: var(--button-text);
  border: none;
  border-radius: 16px;
  padding: 6px 14px;
  margin-left: 6px;
  font-size: 0.95em;
  cursor: pointer;
  transition: background 0.2s;
}
.mask-toast-undo:hover,
.mask-toast-undo:focus-visible {
  background: var(--button-hover);
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

.mask-storage-empty {
  color: #aaa;
  text-align: center;
  font-size: 1.08em;
  padding: 2em 0 1.5em;
  opacity: 0.9;
  user-select: none;
}

/* Фокус и доступность */
.mask-action-btn:focus-visible,
.mask-template-btn:focus-visible,
.mask-delete-btn:focus-visible,
.drag-handle:focus-visible,
.mask-move-up:focus-visible,
.mask-move-down:focus-visible {
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

.mask-move-up,
.mask-move-down {
  background: transparent;
  border: none;
  color: var(--primary-color);
  font-size: 1.2em;
  cursor: pointer;
  padding: 2px 6px;
  margin: 0 2px;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
}
.mask-move-up:hover,
.mask-move-down:hover,
.mask-move-up:focus-visible,
.mask-move-down:focus-visible {
  background: var(--panel-bg-light);
  color: var(--primary-hover);
  outline: 2px solid var(--input-focus);
  outline-offset: 2px;
}

/* ----------- Адаптивность ----------- */
@media (max-width: 900px) {
  #mask-dialog {
    max-width: 98vw;
    max-height: 98vh;
    font-size: 0.97rem;
  }
  .mask-content {
    flex-direction: column;
    min-height: 320px;
    gap: 8px;
  }
  .mask-preview-panel,
  .mask-storage-panel {
    flex: 0 0 auto;
    border: none;
    border-bottom: 1px solid var(--panel-border);
    min-width: unset;
    max-width: unset;
    min-height: 48px;
    max-height: 120px;
    overflow-y: auto;
  }
  .mask-form-panel {
    padding: var(--small-gap);
    min-width: 0;
  }
  .mask-actions {
    flex-direction: column;
    gap: 8px;
    padding: 8px 12px;
  }
}

@media (max-width: 600px) {
  #mask-dialog {
    max-width: 99vw;
    max-height: 99vh;
    font-size: 0.95rem;
    border-radius: 0;
  }
  .mask-content {
    padding: 0;
    gap: 0;
    min-height: 0;
  }
  .mask-preview-panel,
  .mask-form-panel,
  .mask-storage-panel {
    padding: 8px 3vw;
    min-width: 0;
    max-width: 100vw;
  }
  .mask-preview-avatar {
    max-width: 100vw;
    max-height: 170px;
  }
  .mask-actions {
    flex-direction: column;
    gap: 6px;
    padding: 8px 3vw;
  }
  .mask-toast {
    font-size: 15px;
    padding: 9px 10vw;
    border-radius: 7px;
    left: 50%;
    min-width: 160px;
    max-width: 92vw;
  }
}

@media (max-width: 420px) {
  #mask-dialog {
    font-size: 0.91rem;
  }
  .mask-form-field,
  .mask-form,
  .mask-actions {
    gap: 6px !important;
    row-gap: 6px !important;
  }
}