/* public/assets/css/pdf/pdf-dark-mode.css */

.pdf-darkmode-wrapper { padding: 32px 16px; position: relative; }
.pdf-darkmode-header { text-align: center; margin-bottom: 32px; }
.pdf-darkmode-title { font-size: 2.2rem; font-weight: 800; color: var(--text-main); margin-bottom: 12px; }
.pdf-darkmode-subtitle { font-size: 1.05rem; color: var(--text-muted); max-width: 700px; margin: 0 auto; line-height: 1.6; }

.pdf-darkmode-workspace { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 360px 1fr; gap: 32px; align-items: start; }

/* 左侧控制区 */
.pdf-darkmode-controls { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 16px; padding: 24px; box-shadow: 0 4px 15px rgba(0,0,0,0.03); display: flex; flex-direction: column; gap: 24px; }
.control-section h4 { margin: 0 0 16px 0; font-size: 1rem; color: var(--text-main); border-bottom: 2px solid rgba(139, 92, 246, 0.2); padding-bottom: 8px; display: inline-block; }

.file-drop-area { border: 2px dashed #8b5cf6; border-radius: 12px; padding: 40px 20px; text-align: center; cursor: pointer; transition: 0.3s; background: rgba(139, 92, 246, 0.03); position: relative; overflow: hidden; }
.file-drop-area:hover, .file-drop-area.drag-over { background: rgba(139, 92, 246, 0.08); border-color: #7c3aed; }
.drop-text { margin-top: 12px; font-weight: 600; color: var(--text-main); font-size: 0.95rem; word-break: break-all; }
.file-input-hidden { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }

/* 表单与下拉框美化 */
.input-group { display: flex; flex-direction: column; gap: 6px; }
.input-group label { font-size: 0.85rem; font-weight: 700; color: var(--text-muted); }
.custom-select { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; background: var(--bg-body); color: var(--text-main); font-size: 0.95rem; box-sizing: border-box; outline: none; transition: 0.2s; font-weight: 600; cursor: pointer;}
.custom-select:focus { border-color: #8b5cf6; box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1); }

.tips-box { background: rgba(139, 92, 246, 0.05); border: 1px solid rgba(139, 92, 246, 0.15); border-radius: 8px; padding: 12px; font-size: 0.85rem; color: #6d28d9; line-height: 1.5; }
[data-theme="dark"] .tips-box { color: #a78bfa; background: rgba(167, 139, 250, 0.05); }

.pdf-darkmode-btn-primary { background: #8b5cf6; color: #fff; border: none; padding: 14px 20px; font-size: 1.05rem; font-weight: 800; border-radius: 12px; cursor: pointer; transition: 0.2s; box-shadow: 0 4px 10px rgba(139, 92, 246, 0.3); width: 100%; }
.pdf-darkmode-btn-primary:hover:not(:disabled) { background: #7c3aed; transform: translateY(-2px); }
.pdf-darkmode-btn-primary:disabled { background: #94a3b8; cursor: not-allowed; box-shadow: none; opacity: 0.7; }

/* 右侧预览区 */
.pdf-darkmode-preview { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.status-box { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 12px; padding: 40px 24px; text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; box-shadow: 0 4px 15px rgba(0,0,0,0.03); min-height: 200px; }
.status-text { font-size: 1.05rem; font-weight: 600; color: var(--text-main); margin-top: 12px; }
.loader-spinner { width: 32px; height: 32px; border: 4px solid var(--border-color); border-top-color: #8b5cf6; border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.status-icon { font-size: 3rem; }

.progress-bar-wrap { width: 100%; max-width: 300px; height: 8px; background: var(--bg-body); border-radius: 4px; overflow: hidden; border: 1px solid var(--border-color); box-sizing: border-box; }
.progress-bar-fill { width: 0%; height: 100%; background: #8b5cf6; transition: width 0.2s linear; }

/* 🌟 Before / After 对比面板 */
.pdf-render-box { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 12px; padding: 20px; box-shadow: 0 4px 15px rgba(0,0,0,0.03); text-align: center; overflow: hidden; }
.render-hint { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; font-weight: 600; }

.preview-split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.preview-panel { position: relative; background: #f1f5f9; padding: 12px; border-radius: 8px; border: 1px solid #cbd5e1; }
[data-theme="dark"] .preview-panel { background: #0f172a; border-color: #334155; }

.preview-badge { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); font-size: 0.75rem; font-weight: 800; padding: 4px 10px; border-radius: 20px; color: #fff; z-index: 10; box-shadow: 0 2px 5px rgba(0,0,0,0.2); white-space: nowrap; }
.badge-before { background: #ef4444; }
.badge-after { background: #10b981; }

.pdf-canvas-wrapper { width: 100%; display: flex; justify-content: center; overflow: hidden; }
#pdfCanvasOriginal, #pdfCanvasDark { max-width: 100%; height: auto; display: block; border: 1px solid rgba(0,0,0,0.1); box-shadow: 0 4px 10px rgba(0,0,0,0.1); }

/* SEO */
.tool-seo-article { width: 100%; }
.pdf-info-card { background: var(--bg-surface); padding: 24px 32px; border-radius: 16px; border: 1px solid var(--border-color); box-sizing: border-box; max-width: 1200px; margin: 0 auto; box-shadow: 0 4px 15px rgba(0,0,0,0.02); }
.pdf-info-card h3 { margin: 0 0 12px 0; color: var(--text-main); font-size: 1.25rem; }
.pdf-desc-text { color: var(--text-muted); font-size: 0.95rem; }

@media (max-width: 900px) {
    .pdf-darkmode-workspace { grid-template-columns: 1fr; }
    .preview-split { grid-template-columns: 1fr; gap: 32px; }
}