:root{--primary-color: #2196f3;--secondary-color: #03a9f4;--accent-color: #ff9800;--text-color: #333;--bg-color: #f5f5f5;--panel-bg: #fff;--border-color: #ddd;--active-bg: #e3f2fd;--hover-bg: #f0f7ff;--header-height: 60px;--footer-height: 30px;--tools-width: 80px;--properties-width: 300px}.app-container{display:flex;flex-direction:column;height:100vh;color:var(--text-color);background-color:var(--bg-color)}.app-header{height:var(--header-height);background-color:var(--primary-color);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:0 20px;box-shadow:0 2px 4px #0000001a}.logo h1{margin:0;font-size:1.5rem}.header-actions{display:flex;gap:10px}.header-btn{background-color:#fff3;border:1px solid rgba(255,255,255,.4);color:#fff;padding:8px 16px;border-radius:4px;cursor:pointer;font-size:14px;transition:background-color .2s}.header-btn:hover{background-color:#ffffff4d}.header-btn:disabled{opacity:.5;cursor:not-allowed}.app-content{flex:1;display:flex;overflow:hidden}.tools-panel{width:var(--tools-width);background-color:var(--panel-bg);border-right:1px solid var(--border-color);padding:10px 0;display:flex;flex-direction:column;gap:20px}.tool-group{display:flex;flex-direction:column;gap:5px;padding:0 10px}.tool-btn{background-color:transparent;border:none;padding:10px 5px;text-align:center;cursor:pointer;border-radius:4px;font-size:14px;transition:background-color .2s;display:flex;flex-direction:column;align-items:center;justify-content:center;height:70px}.tool-btn:hover{background-color:var(--hover-bg)}.tool-btn.active{background-color:var(--active-bg);color:var(--primary-color);font-weight:700}.tool-btn:disabled{opacity:.5;cursor:not-allowed}.content-area{flex:1;overflow:hidden;position:relative}.panorama-container{width:100%;height:100%;position:relative;background-color:#000}.panorama-placeholder{display:flex;justify-content:center;align-items:center;width:100%;height:100%;background-color:#444;color:#fff}.placeholder-message{text-align:center}.import-btn{background-color:var(--primary-color);color:#fff;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;margin-top:10px;font-size:14px}canvas{width:100%;height:100%;display:block}.properties-panel{width:var(--properties-width);background-color:var(--panel-bg);border-left:1px solid var(--border-color);display:flex;flex-direction:column;overflow:hidden}.panel-header{padding:15px;border-bottom:1px solid var(--border-color)}.panel-header h3{margin:0;font-size:16px}.panel-content{flex:1;padding:15px;overflow-y:auto}.property-group{margin-bottom:20px}.property-group h4{margin:0 0 10px;font-size:14px;color:#666}.property-item{margin-bottom:10px}.property-item label{display:block;margin-bottom:5px;font-size:13px;color:#666}.property-value{font-size:14px;word-break:break-all}.property-item input[type=text],.property-item input[type=number],.property-item select,.property-item textarea{width:100%;padding:8px;border:1px solid var(--border-color);border-radius:4px;font-size:14px}.property-item textarea{min-height:100px;resize:vertical}.delete-btn{background-color:#f44336;color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer;margin-top:10px;font-size:14px;width:100%}.app-footer{height:var(--footer-height);background-color:var(--panel-bg);border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;padding:0 15px;font-size:13px;color:#666}.modal{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background-color:#fff;border-radius:6px;width:500px;max-width:90%;box-shadow:0 4px 20px #0003;overflow:hidden}.modal-header{padding:15px 20px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.modal-header h2{margin:0;font-size:18px}.close-btn{background:none;border:none;font-size:24px;cursor:pointer;color:#999}.modal-body{padding:20px}.modal-footer{padding:15px 20px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:10px}.cancel-btn{background-color:#f5f5f5;border:1px solid #ddd;padding:8px 16px;border-radius:4px;cursor:pointer}.confirm-btn{background-color:var(--primary-color);color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer}.confirm-btn:disabled{opacity:.5;cursor:not-allowed}.file-upload{display:flex;flex-direction:column;gap:10px}.file-upload label{margin-bottom:5px;font-size:14px}.file-info{margin:10px 0;font-size:14px;color:#666}.export-options{display:flex;flex-direction:column;gap:15px}.export-option{display:flex;flex-direction:column;margin-left:25px}.export-option label{margin-left:5px;font-weight:700}.option-desc{margin:5px 0 0 25px;font-size:13px;color:#666}.export-progress{margin-top:20px}.progress-bar{height:10px;background-color:#eee;border-radius:5px;overflow:hidden}.progress-fill{height:100%;background-color:var(--primary-color);transition:width .3s}.progress-text{text-align:center;margin-top:5px;font-size:14px}.sam-processing{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#000000b3;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;z-index:10}.processing-spinner{border:4px solid rgba(255,255,255,.3);width:40px;height:40px;border-radius:50%;border-top-color:#fff;animation:spin 1s linear infinite}.processing-text{margin-top:15px;font-size:16px}.notification{position:fixed;bottom:20px;right:20px;padding:12px 20px;border-radius:4px;color:#fff;font-size:14px;opacity:0;transform:translateY(20px);transition:opacity .3s,transform .3s;z-index:2000}.notification.active{opacity:1;transform:translateY(0)}.notification.success{background-color:#4caf50}.notification.error{background-color:#f44336}.notification.info{background-color:var(--primary-color)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.icon-left{margin-right:8px}.tool-icon{display:block;font-size:20px;margin-bottom:5px}.tool-text{font-size:12px;white-space:nowrap}