/* ============================================
   AI文档扫描和PDF全能工具箱 - 工具页专用样式
   ============================================ */

/* PDF工具网格 */
.pdf-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.pdf-tool-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.pdf-tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.pdf-tool-card .tool-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
  background: var(--primary-light);
}

.pdf-tool-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.pdf-tool-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 不同工具的图标颜色 */
.pdf-tool-card.merge .tool-icon { background: #DBEAFE; }
.pdf-tool-card.split .tool-icon { background: #FCE7F3; }
.pdf-tool-card.compress .tool-icon { background: #D1FAE5; }
.pdf-tool-card.to-image .tool-icon { background: #FEF3C7; }
.pdf-tool-card.image-to-pdf .tool-icon { background: #EDE9FE; }
.pdf-tool-card.to-word .tool-icon { background: #FEE2E2; }
.pdf-tool-card.unlock .tool-icon { background: #E0F2FE; }

/* 扫描页面增强 */
.scan-workspace {
  max-width: 800px;
  margin: 0 auto;
}

.scan-upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 60px 32px;
  text-align: center;
  background: var(--bg-white);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.scan-upload-area:hover,
.scan-upload-area.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.scan-upload-area .big-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.scan-upload-area h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.scan-upload-area p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.scan-upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* 扫描结果预览 */
.scan-result-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}

.scan-result-container .panel {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.scan-result-container .panel-header {
  padding: 12px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border-light);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.scan-result-container .panel-body {
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.scan-result-container .panel-body canvas {
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
}

/* 滤镜选项 */
.filter-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0;
}

.filter-option {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.filter-option:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-option.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 处理状态 */
.processing-status {
  text-align: center;
  padding: 40px 20px;
}

.processing-status .spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.processing-status p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* 页面预览缩略图 */
.page-thumbnails {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 16px 0;
  max-width: 700px;
  margin: 0 auto;
}

.page-thumb {
  flex-shrink: 0;
  width: 100px;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.page-thumb:hover,
.page-thumb.selected {
  border-color: var(--primary);
}

.page-thumb canvas {
  width: 100%;
  display: block;
}

.page-thumb .page-num {
  position: absolute;
  bottom: 4px;
  right: 4px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
}

/* 拖拽排序提示 */
.drag-hint {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-top: 8px;
}

/* 压缩质量滑块 */
.quality-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 100px;
  background: var(--border);
  outline: none;
}

.quality-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(79,110,247,0.3);
}

/* 文件大小对比 */
.size-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin: 20px 0;
}

.size-item {
  text-align: center;
}

.size-item .size-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.size-item .size-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.size-arrow {
  font-size: 1.5rem;
  color: var(--secondary);
}

/* 响应式补充 */
@media (max-width: 768px) {
  .scan-result-container {
    grid-template-columns: 1fr;
  }

  .pdf-tools-grid {
    grid-template-columns: 1fr 1fr;
  }

  .filter-options {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .pdf-tools-grid {
    grid-template-columns: 1fr;
  }
}