/**
 * Layout Components CSS
 * Styles for TabContainer, ProgressStepper, SplitPane, TreeView, and FileUpload components
 */

@layer components {
  /* =============================================================================
   TAB CONTAINER STYLES
   ============================================================================= */

  .tab-container {
    display: flex;
    flex-direction: column;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    background-color: #fff;
    font-family: Arial, sans-serif;
  }

  .tab-container__header {
    display: flex;
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    overflow-x: auto;
    min-height: 40px;
  }

  .tab-container__tab {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    border: none;
    background-color: transparent;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 12px;
    color: #333;
    white-space: nowrap;
    min-width: 0;
    flex-shrink: 0;
    position: relative;
    transition: all 0.2s ease;
  }

  .tab-container__tab:hover {
    background-color: #e9ecef;
  }

  .tab-container__tab--active {
    background-color: #fff;
    border-bottom-color: #007bff;
    font-weight: bold;
    color: #007bff;
  }

  .tab-container__tab--disabled {
    color: #999;
    cursor: not-allowed;
    opacity: 0.6;
  }

  .tab-container__tab--disabled:hover {
    background-color: transparent;
  }

  .tab-container__tab-icon {
    margin-right: 6px;
    font-size: 14px;
  }

  .tab-container__tab-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .tab-container__tab-badge {
    margin-left: 6px;
    background-color: #dc3545;
    color: #fff;
    border-radius: 50%;
    font-size: 10px;
    font-weight: bold;
    min-width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .tab-container__tab-close {
    margin-left: 8px;
    font-size: 14px;
    color: #666;
    cursor: pointer;
    padding: 2px;
    border-radius: 2px;
    transition:
      color 0.2s ease,
      background-color 0.2s ease;
  }

  .tab-container__tab-close:hover {
    color: #dc3545;
    background-color: #f8f9fa;
  }

  .tab-container__content {
    flex: 1;
    padding: 16px;
    background-color: #fff;
    overflow: auto;
  }

  /* =============================================================================
   PROGRESS STEPPER STYLES
   ============================================================================= */

  .progress-stepper {
    display: flex;
    align-items: center;
    font-family: Arial, sans-serif;
    padding: 16px 0;
  }

  .progress-stepper--vertical {
    flex-direction: column;
    align-items: flex-start;
  }

  .progress-stepper__step {
    display: flex;
    align-items: center;
    position: relative;
    flex: 1;
    min-width: 0;
    cursor: pointer;
    transition: opacity 0.2s ease;
  }

  .progress-stepper__step:hover:not(.progress-stepper__step--disabled) {
    opacity: 0.8;
  }

  .progress-stepper__step--disabled {
    cursor: not-allowed;
    opacity: 0.6;
  }

  .progress-stepper--vertical .progress-stepper__step {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    padding: 12px 0;
  }

  .progress-stepper__circle {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    position: relative;
    z-index: 10;
    transition: all 0.3s ease;
  }

  .progress-stepper__circle--completed {
    background-color: #28a745;
    color: #fff;
    border: 2px solid #28a745;
  }

  .progress-stepper__circle--active {
    background-color: #007bff;
    color: #fff;
    border: 2px solid #007bff;
  }

  .progress-stepper__circle--inactive {
    background-color: #e9ecef;
    color: #666;
    border: 2px solid #e9ecef;
  }

  .progress-stepper__circle--disabled {
    background-color: #f8f9fa;
    color: #999;
    border: 2px solid #e9ecef;
    opacity: 0.6;
  }

  .progress-stepper__line {
    flex: 1;
    height: 2px;
    background-color: #e9ecef;
    position: relative;
    z-index: 5;
  }

  .progress-stepper--vertical .progress-stepper__line {
    width: 2px;
    height: 40px;
    margin-left: 14px;
  }

  .progress-stepper__line--completed {
    background-color: #28a745;
  }

  .progress-stepper__content {
    margin-left: 12px;
    display: flex;
    flex-direction: column;
  }

  .progress-stepper--vertical .progress-stepper__content {
    margin-left: 12px;
    margin-top: -20px;
  }

  .progress-stepper__title {
    font-size: 11px;
    font-weight: bold;
    color: #333;
    margin-bottom: 2px;
  }

  .progress-stepper__description {
    font-size: 10px;
    color: #666;
    line-height: 1.3;
  }

  .progress-stepper__step--active .progress-stepper__title {
    color: #007bff;
  }

  /* =============================================================================
   SPLIT PANE STYLES
   ============================================================================= */

  .split-pane {
    display: flex;
    height: 100%;
    position: relative;
    overflow: hidden;
  }

  .split-pane--vertical {
    flex-direction: column;
  }

  .split-pane__pane {
    overflow: auto;
    background-color: #fff;
    border: 1px solid #e9ecef;
  }

  .split-pane__pane--left,
  .split-pane__pane--top {
    border-right: none;
    border-bottom: none;
  }

  .split-pane__pane--right,
  .split-pane__pane--bottom {
    border-left: none;
    border-top: none;
  }

  .split-pane__splitter {
    background-color: #e9ecef;
    cursor: col-resize;
    user-select: none;
    position: relative;
    transition: background-color 0.2s ease;
  }

  .split-pane--vertical .split-pane__splitter {
    cursor: row-resize;
  }

  .split-pane__splitter:hover {
    background-color: #dee2e6;
  }

  .split-pane__splitter--resizing {
    background-color: #007bff;
  }

  .split-pane__splitter-grip {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .split-pane__splitter-grip::before {
    content: "";
    width: 2px;
    height: 16px;
    background-color: #999;
    box-shadow:
      4px 0 0 #999,
      -4px 0 0 #999;
  }

  .split-pane--vertical .split-pane__splitter-grip::before {
    width: 16px;
    height: 2px;
    box-shadow:
      0 4px 0 #999,
      0 -4px 0 #999;
  }

  /* =============================================================================
   TREE VIEW STYLES
   ============================================================================= */

  .tree-view {
    background-color: #fff;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    font-family: Arial, sans-serif;
    font-size: 13px;
    overflow: auto;
    position: relative;
  }

  .tree-view__node {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    cursor: pointer;
    user-select: none;
    position: relative;
    white-space: nowrap;
    transition: background-color 0.2s ease;
  }

  .tree-view__node:hover {
    background-color: #f5f5f5;
  }

  .tree-view__node--selected {
    background-color: #e3f2fd;
    color: #007bff;
  }

  .tree-view__node--disabled {
    color: #999;
    cursor: not-allowed;
    opacity: 0.6;
  }

  .tree-view__node--disabled:hover {
    background-color: transparent;
  }

  .tree-view__expand-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 4px;
    font-size: 10px;
    color: #666;
    cursor: pointer;
    transition: transform 0.2s ease;
  }

  .tree-view__expand-icon--expanded {
    transform: rotate(90deg);
  }

  .tree-view__icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 6px;
    font-size: 14px;
    color: #666;
  }

  .tree-view__checkbox {
    width: 14px;
    height: 14px;
    border: 1px solid #999;
    border-radius: 2px;
    margin-right: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    transition: all 0.2s ease;
  }

  .tree-view__checkbox--checked {
    background-color: #007bff;
    border-color: #007bff;
    color: #fff;
  }

  .tree-view__label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .tree-view__scrollbar {
    position: absolute;
    right: 0;
    top: 0;
    width: 8px;
    height: 100%;
    background-color: #f0f0f0;
  }

  .tree-view__scrollbar-thumb {
    background-color: #c0c0c0;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }

  .tree-view__scrollbar-thumb:hover {
    background-color: #a0a0a0;
  }

  /* =============================================================================
   FILE UPLOAD STYLES
   ============================================================================= */

  .file-upload {
    border: 2px dashed #dee2e6;
    border-radius: 8px;
    padding: 32px;
    text-align: center;
    background-color: #f8f9fa;
    font-family: Arial, sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }

  .file-upload:hover {
    border-color: #007bff;
    background-color: #f0f8ff;
  }

  .file-upload--drag-over {
    border-color: #007bff;
    border-style: solid;
    background-color: #e3f2fd;
    transform: scale(1.02);
  }

  .file-upload--disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: #f8f9fa;
  }

  .file-upload--disabled:hover {
    border-color: #dee2e6;
    background-color: #f8f9fa;
    transform: none;
  }

  .file-upload__icon {
    font-size: 48px;
    color: #6c757d;
    margin-bottom: 16px;
    display: block;
  }

  .file-upload__text {
    font-size: 14px;
    color: #333;
    margin-bottom: 16px;
    line-height: 1.4;
  }

  .file-upload__button {
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 12px;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }

  .file-upload__button:hover {
    background-color: #0056b3;
  }

  .file-upload__file-list {
    margin-top: 16px;
    text-align: left;
    max-height: 150px;
    overflow-y: auto;
  }

  .file-upload__file-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background-color: #fff;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    margin-bottom: 4px;
    font-size: 12px;
  }

  .file-upload__file-item--error {
    border-color: #dc3545;
    background-color: #ffeaea;
  }

  .file-upload__file-icon {
    margin-right: 8px;
    color: #666;
  }

  .file-upload__file-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .file-upload__file-size {
    color: #666;
    margin-left: 8px;
    margin-right: 8px;
  }

  .file-upload__file-remove {
    color: #dc3545;
    cursor: pointer;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 2px;
    transition: background-color 0.2s ease;
  }

  .file-upload__file-remove:hover {
    background-color: #f8d7da;
  }

  .file-upload__progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background-color: #e9ecef;
  }

  .file-upload__progress-bar {
    height: 100%;
    background-color: #007bff;
    transition: width 0.3s ease;
  }

  .file-upload__progress-text {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: #333;
    background-color: rgb(255 255 255 / 90%);
    padding: 2px 8px;
    border-radius: 4px;
  }

  /* =============================================================================
   ERROR STATES AND VISUAL FEEDBACK
   ============================================================================= */

  .tab-container--error {
    border-color: #dc3545;
  }

  .tab-container__tab--error {
    border-bottom-color: #dc3545;
    color: #dc3545;
  }

  .progress-stepper__step--error .progress-stepper__circle {
    background-color: #dc3545;
    border-color: #dc3545;
    color: #fff;
  }

  .tree-view--error {
    border-color: #dc3545;
  }

  .file-upload--error {
    border-color: #dc3545;
    background-color: #ffeaea;
  }

  /* Loading states */
  .tab-container--loading {
    opacity: 0.7;
    pointer-events: none;
  }

  .progress-stepper--loading .progress-stepper__circle {
    animation: pulse 1.5s ease-in-out infinite;
  }

  @keyframes pulse {
    0%,
    100% {
      opacity: 1;
    }

    50% {
      opacity: 0.6;
    }
  }

  /* Improved disabled states */
  .tab-container__tab--disabled,
  .progress-stepper__step--disabled,
  .tree-view__node--disabled,
  .file-upload--disabled {
    filter: grayscale(100%);
  }

  /* =============================================================================
   RESPONSIVE DESIGN
   ============================================================================= */

  @media (width <= 768px) {
    .tab-container__tab {
      padding: 6px 12px;
      font-size: 11px;
    }

    .progress-stepper__circle {
      width: 24px;
      height: 24px;
      font-size: 10px;
    }

    .split-pane__splitter {
      min-width: 8px;
      min-height: 8px;
    }

    .tree-view__node {
      padding: 6px;
    }

    .file-upload {
      padding: 20px;
    }

    .file-upload__icon {
      font-size: 36px;
    }
  }

  /* =============================================================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================================================= */

  .tab-container__tab:focus,
  .progress-stepper__step:focus,
  .tree-view__node:focus,
  .file-upload:focus,
  .file-upload__button:focus,
  .tree-view__expand-icon:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
  }

  @media (prefers-reduced-motion: reduce) {
    .tab-container__tab,
    .progress-stepper__circle,
    .progress-stepper__line,
    .split-pane__splitter,
    .tree-view__node,
    .tree-view__expand-icon,
    .file-upload,
    .file-upload__progress-bar,
    .file-upload__button,
    .tab-container__tab-close,
    .tree-view__checkbox {
      transition: none;
      animation: none;
    }

    .file-upload--drag-over {
      transform: none;
    }
  }

  /* High contrast mode support */
  @media (prefers-contrast: high) {
    .tab-container,
    .split-pane__pane,
    .tree-view,
    .file-upload {
      border-width: 2px;
    }

    .tab-container__tab--active {
      border-bottom-width: 4px;
    }

    .progress-stepper__circle {
      border-width: 3px;
    }

    .progress-stepper__line {
      height: 3px;
    }

    .tree-view__checkbox {
      border-width: 2px;
    }

    .file-upload {
      border-width: 3px;
    }

    /* Enhanced contrast colors */
    .tab-container__tab--active {
      color: #0056b3;
      border-bottom-color: #0056b3;
    }

    .progress-stepper__circle--active {
      background-color: #0056b3;
      border-color: #0056b3;
    }

    .tree-view__node--selected {
      background-color: #0056b3;
      color: #fff;
    }
  }
} /* End @layer components */