.viewer-header{position:fixed;top:0;left:0;right:0;height:80px;background:linear-gradient(135deg, #1a252f 0%, #2c3e50 100%);color:white;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,0.3);display:flex;justify-content:space-between;align-items:center;padding:0 20px}.header-left h3{margin:0;font-size:24px;font-weight:600}.header-left p{margin:0;font-size:14px;opacity:0.8}.header-right{display:flex;gap:15px}.header-right a{background:#3498db;color:white;padding:10px 20px;border-radius:6px;text-decoration:none;font-weight:500;transition:all 0.3s ease}.header-right a:hover{background:#2980b9;transform:translateY(-1px)}.potree_container.simple-mode .simple-sidebar{display:flex !important}.potree_container.simple-mode #potree_sidebar_container{display:none !important}.potree_container.detailed-mode .simple-sidebar{display:none !important}.potree_container.detailed-mode #potree_sidebar_container{display:block !important}.potree_container.detailed-mode #potree_render_area{margin-left:0 !important;margin-top:80px !important}.potree_container.detailed-mode .potree_menu_toggle{display:block !important}.potree_container:not(.detailed-mode) .simple-sidebar{display:flex !important}.potree_container:not(.detailed-mode) #potree_sidebar_container{display:none !important}.potree_container.simple-mode .potree_menu_toggle,.potree_container:not(.detailed-mode) .potree_menu_toggle{display:none !important}.potree_container.simple-mode #potree_render_area,.potree_container:not(.detailed-mode) #potree_render_area{margin-left:280px !important;margin-top:80px !important}@media (max-width: 1200px){.simple-sidebar{width:250px}.potree_container.simple-mode #potree_render_area,.potree_container:not(.detailed-mode) #potree_render_area{margin-left:250px !important}}#measurement-display{position:fixed;top:120px;right:20px;max-width:300px;z-index:1000}#simple-mode-return-btn{font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;pointer-events:auto !important}#potree_sidebar_container{position:relative !important}