:root{--bg-color:#0f172a;--panel-bg:#1e293bb3;--panel-border:#ffffff1a;--text-main:#f8fafc;--text-muted:#94a3b8;--accent-color:#3b82f6;--accent-hover:#2563eb;--danger-color:#ef4444;--danger-hover:#dc2626;--success-color:#10b981;--success-hover:#059669;--input-bg:#0f172a99;--card-bg:#1e293bcc}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);min-height:100vh;font-family:Inter,sans-serif}.app-view{min-height:calc(100vh - 65px);padding:20px;display:none}.app-view.active{display:block}.main-navbar{z-index:1000;-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--panel-border);background:#0f172ae6;justify-content:space-between;align-items:center;height:65px;padding:0 30px;display:flex;position:sticky;top:0}.nav-brand{color:#fff;cursor:pointer;align-items:center;gap:12px;font-size:1.2rem;font-weight:700;text-decoration:none;display:flex}.nav-brand-icon{background:linear-gradient(135deg,#3b82f6,#8b5cf6);border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;font-size:1.2rem;display:flex}.nav-menu{scrollbar-width:none;-webkit-overflow-scrolling:touch;align-items:center;gap:8px;display:flex;overflow-x:auto}.nav-menu::-webkit-scrollbar{display:none}.nav-item{color:var(--text-muted);cursor:pointer;white-space:nowrap;border:1px solid #0000;border-radius:8px;flex-shrink:0;align-items:center;gap:8px;padding:8px 16px;font-size:.9rem;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.nav-item:hover{color:#fff;background:#ffffff0d}.nav-item.active{color:#fff;background:#3b82f626;border-color:#3b82f64d}#home-view{max-width:1200px;margin:0 auto;padding:40px 20px}.hero-section{text-align:center;margin-bottom:50px}.hero-title{background:linear-gradient(135deg,#60a5fa,#c084fc);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:15px;font-size:2.8rem;font-weight:800}.hero-subtitle{color:var(--text-muted);max-width:600px;margin:0 auto;font-size:1.1rem;line-height:1.6}.cards-grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:30px;display:grid}.tool-card{background:var(--card-bg);border:1px solid var(--panel-border);border-radius:16px;flex-direction:column;justify-content:space-between;padding:30px;transition:transform .3s,box-shadow .3s,border-color .3s;display:flex;position:relative;overflow:hidden}.tool-card:hover{border-color:#60a5fa66;transform:translateY(-6px);box-shadow:0 20px 40px #0006}.tool-card-header{align-items:center;gap:16px;margin-bottom:20px;display:flex}.tool-icon{border-radius:12px;justify-content:center;align-items:center;width:56px;height:56px;font-size:1.8rem;display:flex}.icon-stl{background:linear-gradient(135deg,#f59e0b,#ef4444)}.icon-watermark{background:linear-gradient(135deg,#3b82f6,#06b6d4)}.icon-compressor{background:linear-gradient(135deg,#10b981,#6366f1)}.tool-card-title{color:#fff;font-size:1.3rem;font-weight:700}.tool-card-desc{color:var(--text-muted);margin-bottom:25px;font-size:.95rem;line-height:1.5}.tool-card-footer .btn{padding:12px 20px;font-size:1rem}#stl-app-view{height:calc(100vh - 65px);padding:0;position:relative;overflow:hidden}#viewport{z-index:1;width:100%;height:100%;position:absolute;top:0;left:0}#ui-container{z-index:10;pointer-events:none;width:320px;position:absolute;top:75px;bottom:20px;left:20px}.stl-cad-panel{-webkit-backdrop-filter:blur(16px);pointer-events:auto;background:#0f172ad9;border:1px solid #ffffff1f;border-radius:16px;flex-direction:column;gap:12px;max-height:100%;padding:16px;display:flex;overflow-y:auto;box-shadow:0 12px 40px #00000080}.stl-cad-panel::-webkit-scrollbar{width:5px}.stl-cad-panel::-webkit-scrollbar-track{background:#0003;border-radius:3px}.stl-cad-panel::-webkit-scrollbar-thumb{background:#fff3;border-radius:3px}.stl-panel-header h2{color:#f8fafc;margin:0;font-size:1.1rem;font-weight:700}.stl-panel-card{background:#ffffff08;border:1px solid #ffffff14;border-radius:10px;padding:10px 12px}.stl-card-title{color:#94a3b8;text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;font-size:.8rem;font-weight:600}.stl-card-subtitle{color:#cbd5e1;font-size:.78rem;font-weight:500}.stl-dim-badge{background:#0000004d;border-radius:6px;justify-content:space-between;align-items:center;padding:6px 10px;font-size:.8rem;display:flex}#viewport-tools{z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0f172ad1;border:1px solid #ffffff1f;border-radius:10px;align-items:center;gap:4px;padding:6px 10px;display:flex;position:absolute;top:75px;right:20px;box-shadow:0 4px 20px #0000004d}.view-btn{justify-content:center;align-items:center;height:30px;display:inline-flex;padding:4px 8px!important;font-size:.78rem!important}#stl-status-badge{z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);color:#34d399;pointer-events:none;background:#0f172ad9;border:1px solid #ffffff26;border-radius:20px;padding:8px 22px;font-size:.85rem;position:absolute;bottom:20px;left:50%;transform:translate(-50%);box-shadow:0 4px 20px #0006}.app-container{grid-template-columns:360px 1fr;grid-template-areas:"sidebar main";gap:24px;max-width:1200px;margin:0 auto;display:grid}@media (width<=900px){.app-container{grid-template-columns:1fr;grid-template-areas:"main""sidebar";gap:16px}}.sidebar-panel{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:14px;flex-direction:column;grid-area:sidebar;gap:20px;height:fit-content;padding:24px;display:flex}.main-stage{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:14px;flex-direction:column;grid-area:main;gap:20px;padding:24px;display:flex}.app-container.no-files{max-width:800px;grid-template-columns:1fr!important;grid-template-areas:"main"!important}.app-container.no-files .sidebar-panel,.app-container.no-files .wm-preview-container,.app-container.no-files .wm-thumb-list,.app-container.no-files .tab-header,.app-container.no-files #section-compressor-table,.app-container.no-files #section-pdf-merger{display:none!important}.app-container.no-files .file-dropzone{border:2px dashed var(--accent-color);background:#1e293be6;padding:60px 20px;box-shadow:0 10px 30px #0000004d}.app-container.no-files .file-dropzone h3{color:#fff;font-size:1.3rem}.file-dropzone{border:2px dashed var(--panel-border);text-align:center;cursor:pointer;background:#0f172a66;border-radius:12px;padding:30px 20px;transition:all .2s}.file-dropzone:hover,.file-dropzone.dragover{border-color:var(--accent-color);background:#3b82f61a}.dropzone-icon{margin-bottom:10px;font-size:2.2rem}.wm-preview-container{background:#0006;border-radius:10px;justify-content:center;align-items:center;min-height:350px;padding:15px;display:flex;overflow:hidden}#wm-preview-canvas{object-fit:contain;border-radius:6px;max-width:100%;max-height:450px;box-shadow:0 4px 12px #00000080}.wm-thumb-list{gap:12px;padding-bottom:10px;display:flex;overflow-x:auto}.wm-thumb-card{cursor:pointer;background:#000;border:2px solid #0000;border-radius:8px;flex-shrink:0;width:90px;height:80px;position:relative;overflow:hidden}.wm-thumb-card.active{border-color:var(--accent-color)}.wm-thumb-card img{object-fit:cover;width:100%;height:100%}.wm-thumb-name{white-space:nowrap;text-overflow:ellipsis;background:#000000b3;padding:2px 4px;font-size:.65rem;position:absolute;bottom:0;left:0;right:0;overflow:hidden}.wm-thumb-remove{color:#fff;cursor:pointer;background:#ef4444cc;border:none;border-radius:50%;width:18px;height:18px;font-size:12px;line-height:1;position:absolute;top:2px;right:2px}.form-group{flex-direction:column;gap:6px;display:flex}.form-row{gap:10px;display:flex}.form-row>div{flex:1}label{color:#cbd5e1;font-size:.85rem;font-weight:500}input[type=text],input[type=number],select{background:var(--input-bg);border:1px solid var(--panel-border);color:#fff;border-radius:8px;outline:none;width:100%;padding:9px 12px;font-family:Inter,sans-serif;font-size:.9rem;transition:border-color .2s}input[type=text]:focus,input[type=number]:focus,select:focus{border-color:var(--accent-color)}input[type=range]{width:100%;accent-color:var(--accent-color)}input[type=color]{border:1px solid var(--panel-border);background:var(--input-bg);cursor:pointer;border-radius:6px;height:38px;padding:2px}.btn{cursor:pointer;-webkit-user-select:none;user-select:none;border:none;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 18px;font-family:Inter,sans-serif;font-size:.9rem;font-weight:600;transition:all .2s;display:inline-flex}.btn:disabled{opacity:.4;cursor:not-allowed}.primary-btn{background-color:var(--accent-color);color:#fff}.primary-btn:hover:not(:disabled){background-color:var(--accent-hover)}.secondary-btn{color:#fff;background-color:#ffffff1a}.secondary-btn:hover:not(:disabled){background-color:#fff3}.secondary-btn.active{background-color:#ffffff40;box-shadow:inset 0 2px 4px #0003}.danger-btn{background-color:var(--danger-color);color:#fff}.danger-btn:hover:not(:disabled){background-color:var(--danger-hover)}.success-btn{background-color:var(--success-color);color:#fff}.success-btn:hover:not(:disabled){background-color:var(--success-hover)}.small-btn{padding:6px 12px;font-size:.8rem}.table-wrapper{border-radius:8px;width:100%;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;margin-top:10px}.data-table th,.data-table td{text-align:left;border-bottom:1px solid var(--panel-border);vertical-align:middle;padding:12px 14px;font-size:.88rem}.text-truncate{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.data-table th{color:var(--text-muted);background:#0f172a66;font-weight:600}.badge{border-radius:6px;padding:4px 8px;font-size:.75rem;font-weight:700}.bg-success{color:#34d399;background:#10b98133}.bg-danger{color:#f87171;background:#ef444433}.tab-header{border-bottom:1px solid var(--panel-border);gap:10px;margin-bottom:15px;padding-bottom:10px;display:flex}.tab-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:8px 16px;font-size:.95rem;font-weight:600;transition:all .2s}.tab-btn:hover{color:#fff;background:#ffffff0d}.tab-btn.active{color:#fff;background:#3b82f633}.text-small{font-size:.8rem}.text-muted{color:var(--text-muted)}.mt-2{margin-top:8px}.mt-3{margin-top:14px}.mt-4{margin-top:20px}.canvas-container{background:var(--input-bg);border:1px solid var(--panel-border);border-radius:8px;flex-direction:column;align-items:center;margin-top:10px;padding:10px;display:flex}#draw-canvas{cursor:crosshair;aspect-ratio:1;touch-action:none;background:#2a2a2a;border-radius:4px;width:100%}#status-bar{text-align:center;color:#fbbf24;background:#0000004d;border-radius:4px;padding:8px}.modal-overlay{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:9999;background:#000000b3;justify-content:center;align-items:center;width:100%;height:100%;display:none;position:fixed;top:0;left:0}.modal-overlay.show{display:flex}.modal-content{border:1px solid var(--panel-border);background:#1e293bf2;border-radius:14px;flex-direction:column;gap:15px;padding:25px;display:flex;box-shadow:0 25px 50px -12px #00000080}.table-wrapper{-webkit-overflow-scrolling:touch;border-radius:8px;width:100%;overflow-x:auto}@media (width<=900px){.app-view{padding:12px}.modal-overlay{padding:10px}.modal-content{gap:15px;max-height:92vh;overflow-y:auto;flex-direction:column!important;width:100%!important;max-width:550px!important;padding:16px!important}.canvas-container{width:100%;max-width:420px}}@media (width<=768px){.main-navbar{gap:8px;height:56px;padding:0 12px}.nav-brand{flex-shrink:0;gap:6px;font-size:.95rem}.nav-brand-icon{width:30px;height:30px;font-size:.95rem}.nav-menu{white-space:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:4px;max-width:100%;padding:4px 0;overflow-x:auto}.nav-menu::-webkit-scrollbar{display:none}.nav-item{flex-shrink:0;gap:4px;padding:6px 10px;font-size:.78rem}#home-view{padding:20px 10px}.hero-section{margin-bottom:24px}.hero-title{font-size:clamp(1.5rem,5.5vw,2.2rem);line-height:1.25}.hero-subtitle{font-size:.9rem;line-height:1.45}.cards-grid{grid-template-columns:1fr;gap:16px}.tool-card{padding:20px}#stl-app-view{height:calc(100vh - 56px)}#main-zoom-controls{top:68px!important;right:12px!important}#ui-container{width:96%;bottom:10px}.glass-panel{border-radius:10px;gap:12px;padding:10px 12px}#axes-legend{padding:6px 8px!important;font-size:.7rem!important;bottom:110px!important;right:10px!important}.sidebar-panel,.main-stage{border-radius:10px;padding:16px}.wm-preview-container{min-height:250px;padding:10px}#wm-preview-canvas{max-height:320px}}@media (width<=480px){.nav-brand span{display:none}.form-row{flex-direction:column;gap:8px}}.cad-navbar{-webkit-backdrop-filter:blur(12px);z-index:500;background:#0f172af2;border-bottom:1px solid #ffffff1f;align-items:center;gap:6px;height:48px;padding:0 14px;display:flex;position:absolute;top:0;left:0;right:0;overflow:visible}.cad-btn{color:#f1f5f9;cursor:pointer;white-space:nowrap;-webkit-user-select:none;user-select:none;background:#1e293bd9;border:1px solid #ffffff1f;border-radius:6px;align-items:center;gap:6px;padding:6px 12px;font-size:.82rem;font-weight:500;transition:all .15s;display:inline-flex}.cad-btn:hover{color:#fff;background:#334155f2;border-color:#60a5fa80}.cad-btn.active{color:#fff;background:#2563eb;border-color:#3b82f6}.cad-dropdown{z-index:501;display:inline-block;position:relative}.cad-dropdown:hover,.cad-dropdown:focus-within,.cad-dropdown.open{z-index:1000}.cad-dropdown-menu{z-index:9999;pointer-events:auto;background:#1e293b;border:1px solid #ffffff2e;border-radius:8px;min-width:220px;margin-top:2px;padding:6px 0;display:none;position:absolute;top:100%;left:0;box-shadow:0 16px 36px #000000b3}.cad-dropdown-menu:before{content:"";pointer-events:auto;background:0 0;height:18px;position:absolute;top:-14px;left:-10px;right:-10px}.cad-dropdown:hover .cad-dropdown-menu,.cad-dropdown:focus-within .cad-dropdown-menu,.cad-dropdown.open .cad-dropdown-menu{display:block}.cad-dropdown-menu a{color:#e2e8f0;align-items:center;gap:8px;padding:8px 14px;font-size:.82rem;text-decoration:none;transition:background .15s;display:flex}.cad-dropdown-menu a:hover{color:#60a5fa;background:#334155}.cad-dropdown-divider{background:#ffffff1a;height:1px;margin:4px 0}.cad-sidebar-left{z-index:90;flex-direction:column;gap:10px;width:280px;max-height:calc(100vh - 120px);display:flex;position:absolute;top:56px;left:14px;overflow-y:auto}.cad-sidebar-right{z-index:90;flex-direction:column;gap:10px;width:320px;max-height:calc(100vh - 120px);display:flex;position:absolute;top:56px;right:14px;overflow-y:auto}.cad-card{-webkit-backdrop-filter:blur(14px);color:#f8fafc;background:#0f172ae0;border:1px solid #ffffff1f;border-radius:10px;padding:14px;box-shadow:0 8px 24px #0006}.cad-card-header{border-bottom:1px solid #ffffff14;justify-content:space-between;align-items:center;margin-bottom:10px;padding-bottom:8px;display:flex}.cad-card-title{color:#f1f5f9;align-items:center;gap:6px;font-size:.88rem;font-weight:600;display:flex}.cad-stat-row{border-bottom:1px solid #ffffff0a;justify-content:space-between;align-items:center;padding:5px 0;font-size:.82rem;display:flex}.cad-stat-row:last-child{border-bottom:none}.cad-stat-label{color:#94a3b8}.cad-stat-val{color:#f8fafc;font-weight:500}.cad-status-bar{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:90;color:#94a3b8;pointer-events:none;background:#0f172ad9;border:1px solid #ffffff1a;border-radius:8px;justify-content:space-between;align-items:center;padding:8px 16px;font-size:.82rem;display:flex;position:absolute;bottom:14px;left:14px;right:14px}.data-table th,.data-table td{padding:8px;font-size:.78rem}.btn{padding:9px 14px;font-size:.85rem}.pm-layout{align-items:flex-start;gap:24px;display:flex}@media (width<=1024px){.pm-layout{flex-direction:column}.tool-sidebar-panel{width:100%!important;max-width:100%!important}}.pm-search-results{border-radius:8px;flex-direction:column;gap:4px;max-height:180px;display:flex;overflow-y:auto}.pm-search-item{color:#f1f5f9;cursor:pointer;background:#ffffff0d;border:1px solid #ffffff14;border-radius:6px;padding:8px 12px;font-size:.82rem;transition:all .15s}.pm-search-item:hover{background:#3b82f633;border-color:#3b82f680}.form-color{cursor:pointer;background:0 0;border:1px solid #ffffff26;border-radius:6px;width:100%;height:32px;padding:2px}.text-xs{font-size:.75rem}.pm-canvas-container{background:radial-gradient(circle,#1e293b 0%,#0f172a 100%);border:1px solid #ffffff1a;border-radius:16px;justify-content:center;align-items:center;min-height:600px;padding:24px;display:flex;overflow:hidden;box-shadow:0 20px 40px -15px #00000080}#pm-canvas{object-fit:contain;border-radius:8px;max-width:100%;max-height:75vh;transition:transform .2s;box-shadow:0 10px 30px #0009}.pm-progress-bar{background:#ffffff1a;border-radius:999px;width:100%;height:6px;position:relative;overflow:hidden}.pm-progress-fill{background:linear-gradient(90deg,#eab308,#3b82f6,#eab308) 0 0/200% 100%;border-radius:999px;width:50%;height:100%;animation:1.5s linear infinite pm-progress-anim}@keyframes pm-progress-anim{0%{transform:translate(-100%)}to{transform:translate(250%)}}