#tool-body {
  --primary: #00A3A3;
  --primary-light: #e6f7f7;
  --primary-dark: #007a7a;
  --border: #e0e0e0;
  --bg: #f7f8fa;
  --bg-card: #fff;
  --text: #333;
  --text-muted: #888;
  --danger: #e06060;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
}
.theme-dark-mode #tool-body {
  --border: #3a3a3a;
  --bg: #1a1a1a;
  --bg-card: #242424;
  --text: #e0e0e0;
  --text-muted: #888;
  --primary-light: #1a3333;
}

#tool-body .wm-layout {
  display: flex;
  gap: 16px;
  min-height: 600px;
}
#tool-body .wm-panel {
  width: 320px;
  flex-shrink: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
#tool-body .wm-preview-area {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
}

/* Panel tabs */
#tool-body .wm-panel-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
#tool-body .wm-panel-tab {
  flex: 1;
  padding: 10px 4px;
  text-align: center;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all .2s;
}
#tool-body .wm-panel-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: var(--bg-card);
  font-weight: 600;
}
#tool-body .wm-panel-tab:hover:not(.active) {
  color: var(--text);
}
#tool-body .wm-panel-body {
  padding: 14px;
  overflow-y: auto;
  max-height: 560px;
}
#tool-body .wm-tab-content { display: none; }
#tool-body .wm-tab-content.active { display: block; }

/* Form controls */
#tool-body .wm-group {
  margin-bottom: 12px;
}
#tool-body .wm-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#tool-body .wm-label span { color: var(--text); font-weight: 600; }
#tool-body .wm-input {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  box-sizing: border-box;
  outline: none;
  transition: border-color .2s;
}
#tool-body .wm-input:focus { border-color: var(--primary); }
#tool-body .wm-select {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  box-sizing: border-box;
  outline: none;
  cursor: pointer;
}
#tool-body .wm-range-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
#tool-body .wm-range {
  flex: 1;
  accent-color: var(--primary);
  cursor: pointer;
}
#tool-body .wm-range-val {
  width: 44px;
  text-align: center;
  padding: 4px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-size: 12px;
}
#tool-body .wm-color-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
#tool-body .wm-color-picker {
  width: 36px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px;
  background: var(--bg);
  cursor: pointer;
}
#tool-body .wm-color-hex {
  flex: 1;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  font-size: 12px;
  font-family: monospace;
}

/* Style toggles */
#tool-body .wm-style-row {
  display: flex;
  gap: 6px;
}
#tool-body .wm-style-btn {
  flex: 1;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  text-align: center;
  font-size: 13px;
  transition: all .2s;
  user-select: none;
}
#tool-body .wm-style-btn.active {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

/* Position grid */
#tool-body .wm-pos-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 4px;
  margin: 0 auto;
  justify-items: stretch;
}
#tool-body .wm-pos-btn {
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  transition: all .2s;
  height: 50px;
}
#tool-body .wm-pos-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
#tool-body .wm-pos-btn:hover:not(.active) {
  border-color: var(--primary);
  color: var(--primary);
}

/* Upload zone */
#tool-body .wm-upload-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 28px 16px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
  background: var(--bg);
  color: var(--text-muted);
}
#tool-body .wm-upload-zone:hover, #tool-body .wm-upload-zone.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}
#tool-body .wm-upload-zone .fa { font-size: 28px; margin-bottom: 8px; display: block; }
#tool-body .wm-upload-zone p { margin: 0; font-size: 13px; }
#tool-body .wm-upload-zone small { font-size: 11px; }

/* File list */
#tool-body .wm-file-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
#tool-body .wm-file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
}
#tool-body .wm-file-thumb {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border);
}
#tool-body .wm-file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}
#tool-body .wm-file-size { color: var(--text-muted); font-size: 11px; }
#tool-body .wm-file-del {
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 3px;
  transition: color .2s;
}
#tool-body .wm-file-del:hover { color: var(--danger); }

/* Preview area */
#tool-body .wm-preview-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  flex-wrap: wrap;
  border-radius: 8px 8px 0 0;
}
#tool-body .wm-preview-toolbar .wm-toolbar-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}
#tool-body .wm-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  transition: all .2s;
  white-space: nowrap;
}
#tool-body .wm-btn-primary {
  background: var(--primary);
  color: #fff;
}
#tool-body .wm-btn-primary:hover { background: var(--primary-dark); }
#tool-body .wm-btn-default {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
}
#tool-body .wm-btn-default:hover { border-color: var(--primary); color: var(--primary); }
#tool-body .wm-btn-sm { padding: 4px 10px; font-size: 12px; }

#tool-body .wm-canvas-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  background: repeating-conic-gradient(#e0e0e0 0% 25%, transparent 0% 50%) 0 0 / 16px 16px;
  overflow: auto;
  min-height: 300px;
  position: relative;
}
.theme-dark-mode #tool-body .wm-canvas-wrap {
  background: repeating-conic-gradient(#333 0% 25%, transparent 0% 50%) 0 0 / 16px 16px;
}
#tool-body #wm-preview-canvas {
  max-width: 100%;
  max-height: max(300px, 50vh);
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
  border-radius: 4px;
  cursor: crosshair;
}
#tool-body .wm-empty-hint {
  text-align: center;
  color: var(--text-muted);
}
#tool-body .wm-empty-hint .fa { font-size: 48px; margin-bottom: 12px; display: block; }

/* Output row */
#tool-body .wm-output-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  flex-wrap: wrap;
  border-radius: 0 0 8px 8px;
}
#tool-body .wm-output-label { font-size: 12px; color: var(--text-muted); }
#tool-body .wm-output-select {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg-card);
  color: var(--text);
  font-size: 13px;
}
#tool-body .wm-quality-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

/* Presets */
#tool-body .wm-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
#tool-body .wm-preset-btn {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 11px;
  cursor: pointer;
  background: var(--bg);
  color: var(--text-muted);
  transition: all .2s;
  white-space: nowrap;
}
#tool-body .wm-preset-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* Section divider */
#tool-body .wm-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 12px 0;
}
#tool-body .wm-section-title {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}
#tool-body .wm-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Thumbnail tabs for batch */
#tool-body .wm-img-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
#tool-body .wm-img-tab-wrap {
  position: relative;
  flex-shrink: 0;
}
#tool-body .wm-img-tab {
  width: 48px;
  height: 48px;
  border: 2px solid var(--border);
  border-radius: 5px;
  object-fit: cover;
  cursor: pointer;
  transition: border-color .2s;
  display: block;
}
#tool-body .wm-img-tab.active { border-color: var(--primary); }
#tool-body .wm-img-tab:hover:not(.active) { border-color: #aaa; }
#tool-body .wm-img-tab-del {
  position: absolute;
  top: -5px;
  right: -5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  font-size: 9px;
  line-height: 16px;
  text-align: center;
  cursor: pointer;
  display: none;
  z-index: 2;
}
#tool-body .wm-img-tab-wrap:hover .wm-img-tab-del { display: block; }

/* Logo upload */
#tool-body .wm-logo-preview {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  display: none;
}
#tool-body .wm-logo-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Badge */
#tool-body .wm-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 10px;
  font-size: 10px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  margin-left: 4px;
}

/* Drag watermark hint */
#tool-body .wm-drag-hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,.5);
  color: #fff;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 20px;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s;
  white-space: nowrap;
}
#tool-body .wm-drag-hint.visible { opacity: 1; }

/* Responsive */
@media(max-width: 768px) {
  #tool-body .wm-layout { flex-direction: column; }
  #tool-body .wm-panel { width: 100%; }
}
#tool-body .wm-panel-tab.wm-tab-source::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5fb878;
  margin-left: 3px;
  vertical-align: middle;
}