:root{--primary: #2563eb;--primary-hover: #1d4ed8;--primary-light: #dbeafe;--secondary: #64748b;--secondary-hover: #475569;--success: #22c55e;--success-light: #dcfce7;--warning: #f59e0b;--warning-light: #fef3c7;--error: #ef4444;--error-light: #fee2e2;--background: #f8fafc;--surface: #ffffff;--surface-hover: #f1f5f9;--border: #e2e8f0;--text: #1e293b;--text-muted: #64748b;--text-light: #94a3b8;--header-height: 60px;--sidebar-width: 280px;--panel-width: 400px;--border-radius: 8px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--transition: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5;color:var(--text);background-color:var(--background);touch-action:manipulation}#app{display:flex;flex-direction:column;height:100%}.header{display:flex;align-items:center;justify-content:space-between;height:var(--header-height);padding:0 16px;background-color:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0}.header-left{display:flex;align-items:center;gap:12px}.logo{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:600;color:var(--text)}.logo-icon{width:28px;height:28px;color:var(--primary)}.header-right{display:flex;align-items:center;gap:8px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:500;border:none;border-radius:var(--border-radius);cursor:pointer;transition:all var(--transition)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-icon{width:18px;height:18px}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover)}.btn-secondary{background-color:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background-color:var(--surface-hover)}.main-content{display:flex;flex:1;overflow:hidden}.sidebar{width:var(--sidebar-width);background-color:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border-bottom:1px solid var(--border);font-size:13px;gap:8px}.sidebar-header-info{display:flex;flex-direction:column;gap:2px}.sidebar-header-actions{display:flex;gap:4px}.btn-icon-only{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background-color:transparent;border:1px solid var(--border);border-radius:var(--border-radius);cursor:pointer;color:var(--text-muted);transition:all var(--transition)}.btn-icon-only:hover:not(:disabled){background-color:var(--surface-hover);color:var(--error);border-color:var(--error)}.btn-icon-only:disabled{opacity:.4;cursor:not-allowed}.btn-icon-only svg{width:16px;height:16px}.photo-count{color:var(--text);font-weight:500}.gps-count{color:var(--success);font-size:11px}.photo-list{flex:1;overflow-y:auto;padding:8px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);text-align:center;padding:20px}.empty-state svg{width:64px;height:64px;margin-bottom:16px;opacity:.5}.empty-state p{font-size:13px;line-height:1.6}.photo-item{display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--border-radius);cursor:pointer;transition:background-color var(--transition);margin-bottom:4px}.photo-item:hover{background-color:var(--surface-hover)}.photo-item.selected{background-color:var(--primary-light)}.photo-item.no-gps{opacity:.6}.photo-thumbnail{width:48px;height:48px;border-radius:4px;object-fit:cover;background-color:var(--surface-hover)}.photo-info{flex:1;min-width:0}.photo-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.photo-date{font-size:11px;color:var(--text-muted)}.photo-status{width:20px;height:20px;flex-shrink:0}.photo-status.has-gps{color:var(--success)}.photo-status.no-gps{color:var(--error)}.map-container{flex:1;position:relative;background-color:var(--background)}#map{width:100%;height:100%}.map-controls{position:absolute;top:80px;right:10px;z-index:1000;display:flex;flex-direction:column;gap:8px}.map-control-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background-color:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius);cursor:pointer;transition:all var(--transition);box-shadow:var(--shadow-sm)}.map-control-btn:hover{background-color:var(--surface-hover)}.map-control-btn.active{background-color:var(--primary);color:#fff;border-color:var(--primary)}.map-control-btn svg{width:20px;height:20px}.drop-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background-color:#2563eb1a;border:3px dashed var(--primary);display:none;align-items:center;justify-content:center;z-index:999}.drop-overlay.active{display:flex}.drop-message{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--primary);font-size:18px;font-weight:500}.drop-message svg{width:48px;height:48px}.metadata-panel{width:var(--panel-width);background-color:var(--surface);border-left:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;transition:width var(--transition)}.metadata-panel.collapsed{width:40px}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.panel-header h2{font-size:14px;font-weight:600}.panel-toggle{width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:none;border:none;cursor:pointer;color:var(--text-muted);transition:transform var(--transition)}.metadata-panel.collapsed .panel-toggle{transform:rotate(180deg)}.panel-content{flex:1;overflow-y:auto;padding:16px}.metadata-panel.collapsed .panel-content,.metadata-panel.collapsed .panel-header h2{display:none}.no-selection{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-muted);font-size:13px}.metadata-preview{margin-bottom:16px;border-radius:var(--border-radius);overflow:hidden;background-color:var(--background);border:1px solid var(--border);max-height:450px;display:flex;align-items:center;justify-content:center}.metadata-preview .preview-image{width:100%;height:auto;max-height:450px;object-fit:contain;display:block;cursor:pointer;transition:opacity var(--transition)}.metadata-preview .preview-image:hover{opacity:.9}.metadata-section{margin-bottom:20px}.metadata-section:last-child{margin-bottom:0}.section-title{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px;padding-bottom:6px;border-bottom:1px solid var(--border)}.metadata-row{display:flex;justify-content:space-between;padding:6px 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ease}.progress-detail{font-size:13px;color:var(--text-muted);margin-top:12px}.preview-modal{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#000000e6;display:flex;align-items:center;justify-content:center;z-index:3000}.preview-modal[hidden]{display:none}.modal-close{position:absolute;top:20px;right:20px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background-color:#ffffff1a;border:none;border-radius:50%;color:#fff;cursor:pointer;transition:background-color var(--transition)}.modal-close:hover{background-color:#fff3}.modal-close svg{width:24px;height:24px}.modal-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;display:flex;align-items:center;justify-content:center;background-color:#ffffff1a;border:none;border-radius:50%;color:#fff;cursor:pointer;transition:background-color var(--transition)}.modal-nav:hover{background-color:#fff3}.modal-nav svg{width:28px;height:28px}.modal-prev{left:20px}.modal-next{right:20px}.modal-content{max-width:90vw;max-height:85vh;display:flex;align-items:center;justify-content:center}.modal-content img{max-width:100%;max-height:85vh;object-fit:contain}.modal-info{position:absolute;bottom:20px;left:50%;transform:translate(-50%);background-color:#000000b3;color:#fff;padding:10px 20px;border-radius:var(--border-radius);font-size:14px}.export-dialog{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:2500}.export-dialog[hidden]{display:none}.dialog-content{background-color:var(--surface);border-radius:var(--border-radius);width:100%;max-width:480px;box-shadow:var(--shadow-lg)}.dialog-content h2{padding:20px 24px;font-size:18px;font-weight:600;border-bottom:1px solid var(--border)}.dialog-body{padding:24px}.form-group{margin-bottom:20px}.form-group:last-child{margin-bottom:0}.form-group>label:first-child{display:block;font-size:13px;font-weight:500;margin-bottom:8px}.form-group select{width:100%;padding:10px 12px;font-size:14px;border:1px solid var(--border);border-radius:var(--border-radius);background-color:var(--surface);cursor:pointer}.form-group select:focus{outline:none;border-color:var(--primary)}.checkbox-group,.radio-group{display:flex;flex-direction:column;gap:10px}.checkbox-group label,.radio-group label{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}.checkbox-group input,.radio-group input{width:16px;height:16px;cursor:pointer}.dialog-footer{display:flex;justify-content:flex-end;gap:12px;padding:16px 24px;border-top:1px solid var(--border)}.toast-container{position:fixed;bottom:20px;right:20px;z-index:4000;display:flex;flex-direction:column;gap:10px}.toast{display:flex;align-items:center;gap:12px;padding:14px 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.panel-content{padding:12px 16px;overflow-y:auto;-webkit-overflow-scrolling:touch}.metadata-preview{max-height:40vh;margin-bottom:12px}.metadata-preview .preview-image{max-height:40vh;width:100%}.metadata-section{margin-bottom:16px}.metadata-row{padding:4px 0;font-size:12px}.modal-nav{width:36px;height:36px}.modal-prev{left:8px}.modal-next{right:8px}.modal-close{top:12px;right:12px;width:36px;height:36px}.export-dialog{width:95%;max-width:none;margin:16px}.toast{left:16px;right:16px;bottom:16px;max-width:none}}@media (max-width: 480px){.photo-item{min-width:60px;max-width:60px;padding:4px}.photo-thumbnail{width:48px;height:48px}.sidebar{max-height:120px}.metadata-panel{max-height:75vh}.metadata-preview,.metadata-preview .preview-image{max-height:35vh}}