*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-base: #0a0b0f;--bg-surface: #111218;--bg-panel: #13141c;--bg-card: #1a1b26;--bg-hover: #1f2135;--bg-active: #252840;--border-subtle: rgba(255, 255, 255, .06);--border-default: rgba(255, 255, 255, .1);--border-strong: rgba(255, 255, 255, .18);--accent-primary: #6c63ff;--accent-light: #8b84ff;--accent-dark: #4f49cc;--accent-glow: rgba(108, 99, 255, .25);--accent-secondary: #ff6b9d;--accent-secondary-glow: rgba(255, 107, 157, .2);--accent-success: #34d399;--accent-warning: #fbbf24;--accent-danger: #f87171;--text-primary: #ffffff;--text-secondary: #a0a6cc;--text-muted: #6b7094;--text-dim: #7e84ad;--text-disabled: #3a3d55;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);--shadow-md: 0 4px 16px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .6);--shadow-glow: 0 0 24px var(--accent-glow);--sidebar-width: 260px;--panel-width: 300px;--header-height: 56px}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:var(--font-sans);background:var(--bg-base);color:var(--text-primary);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app{display:flex;flex-direction:column;width:100%;height:100%}.header{height:var(--header-height);background:var(--bg-panel);border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;gap:var(--space-4);padding:0 var(--space-5);flex-shrink:0;position:relative;z-index:10;backdrop-filter:blur(10px)}.header .hud-panel.top-left{top:50%;transform:translateY(-50%);padding:0 0 0 20px}.header .hud-panel .header-row{margin-bottom:2px!important}.header .hud-subtitle-group{margin-bottom:0!important}.header-logo{display:flex;align-items:center;gap:var(--space-2)}.header-logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:var(--shadow-glow)}.header-logo-text{font-size:16px;font-weight:700;background:linear-gradient(135deg,var(--text-primary),var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.3px}.header-logo-badge{font-size:10px;font-weight:600;color:var(--accent-primary);background:var(--accent-glow);border:1px solid var(--accent-primary);border-radius:var(--radius-full);padding:1px 7px;letter-spacing:.5px;text-transform:uppercase}.header-spacer{flex:1}.header-actions{display:flex;align-items:center;gap:var(--space-2)}.header-info{font-size:12px;color:var(--text-muted);font-family:var(--font-mono)}.main{flex:1;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--bg-panel);border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{padding:var(--space-4) var(--space-4) var(--space-3);border-bottom:1px solid var(--border-subtle)}.sidebar-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);display:flex;align-items:center;gap:var(--space-2)}.sidebar-title-count{background:var(--bg-active);color:var(--text-secondary);border-radius:var(--radius-full);padding:1px 7px;font-size:10px}.sidebar-search{margin-top:var(--space-3);position:relative}.sidebar-search input{width:100%;background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-sm);padding:6px 10px 6px 30px;color:var(--text-primary);font-size:12px;font-family:var(--font-sans);outline:none;transition:border-color .2s}.sidebar-search input:focus{border-color:var(--accent-primary)}.sidebar-search input::placeholder{color:var(--text-disabled)}.sidebar-search-icon{position:absolute;left:9px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:13px;pointer-events:none}.mesh-list{flex:1;overflow-y:auto;padding:var(--space-2) var(--space-2)}.mesh-list-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:var(--space-3);color:var(--text-muted);text-align:center;padding:var(--space-6)}.mesh-list-empty-icon{font-size:40px;opacity:.3}.mesh-list-empty p{font-size:12px;line-height:1.6}.mesh-item{display:flex;align-items:center;gap:var(--space-3);padding:8px 10px;border-radius:var(--radius-md);cursor:pointer;transition:all .15s ease;border:1px solid transparent;margin-bottom:2px}.mesh-item:hover{background:var(--bg-hover);border-color:var(--border-subtle)}.mesh-item.active{background:var(--bg-active);border-color:var(--accent-primary);box-shadow:0 0 0 1px var(--accent-glow)}.mesh-item-icon{width:28px;height:28px;border-radius:var(--radius-sm);background:var(--bg-base);border:1px solid var(--border-default);display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;transition:all .15s}.mesh-item.active .mesh-item-icon{border-color:var(--accent-primary);background:var(--accent-glow)}.mesh-item-info{flex:1;min-width:0}.mesh-item-name{font-size:12px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mesh-item-meta{font-size:10px;color:var(--text-muted);font-family:var(--font-mono)}.mesh-item-dot{width:6px;height:6px;border-radius:50%;background:var(--text-disabled);flex-shrink:0;transition:all .15s}.mesh-item.active .mesh-item-dot{background:var(--accent-primary);box-shadow:0 0 6px var(--accent-primary)}.mesh-item-modified .mesh-item-dot{background:var(--accent-warning)}.viewport{flex:1;position:relative;overflow:hidden;background:var(--bg-base)}.viewport canvas{display:block;width:100%!important;height:100%!important}.viewport-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:5}.viewport-hint{position:absolute;bottom:var(--space-4);left:50%;transform:translate(-50%);background:#0009;backdrop-filter:blur(10px);border:1px solid var(--border-default);border-radius:var(--radius-full);padding:6px 16px;font-size:11px;color:var(--text-muted);display:flex;align-items:center;gap:var(--space-3);pointer-events:none}.viewport-hint-key{background:var(--bg-card);border:1px solid var(--border-default);border-radius:4px;padding:1px 6px;font-family:var(--font-mono);font-size:10px;color:var(--text-secondary)}.viewport-empty{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);z-index:1;pointer-events:none}.viewport-empty-icon{font-size:64px;opacity:.15;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}.viewport-upload-zone{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-8) var(--space-10);border:2px dashed var(--border-default);border-radius:var(--radius-xl);cursor:pointer;pointer-events:all;transition:all .2s;background:#ffffff05}.viewport-upload-zone:hover,.viewport-upload-zone.drag-over{border-color:var(--accent-primary);background:var(--accent-glow);transform:scale(1.02)}.viewport-upload-zone h2{font-size:18px;font-weight:600;color:var(--text-primary)}.viewport-upload-zone p{font-size:13px;color:var(--text-muted);text-align:center}.viewport-upload-zone .upload-formats{font-size:11px;color:var(--text-disabled);font-family:var(--font-mono)}.panel{width:var(--panel-width);background:var(--bg-panel);border-left:1px solid var(--border-subtle);display:flex;flex-direction:column;flex-shrink:0}.panel-header{padding:var(--space-4);border-bottom:1px solid var(--border-subtle);flex-shrink:0}.panel-title{font-size:13px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:var(--space-2)}.panel-title-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-primary);box-shadow:0 0 8px var(--accent-primary)}.panel-subtitle{font-size:11px;color:var(--text-muted);margin-top:2px;font-family:var(--font-mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.panel-body{flex:1;overflow-y:auto;padding:var(--space-3)}.panel-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:var(--space-3);color:var(--text-muted);text-align:center;padding:var(--space-6)}.panel-empty-icon{font-size:36px;opacity:.3}.panel-empty p{font-size:12px;line-height:1.6}.section{margin-bottom:var(--space-4)}.section-header{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;cursor:pointer;border-radius:var(--radius-sm);transition:background .15s;user-select:none}.section-header:hover{background:var(--bg-hover)}.section-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--text-secondary);display:flex;align-items:center;gap:var(--space-2)}.section-chevron{color:var(--text-muted);font-size:10px;transition:transform .2s}.section-chevron.open{transform:rotate(90deg)}.section-content{padding:var(--space-2) 4px 0;display:flex;flex-direction:column;gap:var(--space-3)}.field{display:flex;flex-direction:column;gap:5px}.field-row{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.field-label{font-size:11px;color:var(--text-secondary);font-weight:500;white-space:nowrap}.field-value{font-size:11px;color:var(--text-muted);font-family:var(--font-mono)}.slider-wrap{position:relative;display:flex;align-items:center;gap:var(--space-2)}.slider{flex:1;-webkit-appearance:none;appearance:none;height:4px;border-radius:2px;background:var(--bg-base);outline:none;cursor:pointer;position:relative}.slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent-primary);cursor:pointer;box-shadow:0 0 6px var(--accent-glow);border:2px solid var(--bg-card);transition:transform .1s,box-shadow .1s}.slider::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 0 10px var(--accent-primary)}.slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--accent-primary);cursor:pointer;border:2px solid var(--bg-card)}.number-input{width:52px;background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-sm);padding:3px 6px;color:var(--text-primary);font-size:11px;font-family:var(--font-mono);text-align:right;outline:none;transition:border-color .2s}.number-input:focus{border-color:var(--accent-primary)}.color-field{display:flex;align-items:center;gap:var(--space-2);background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-sm);padding:4px 8px;cursor:pointer;transition:border-color .2s}.color-field:hover{border-color:var(--border-strong)}.color-swatch{width:22px;height:22px;border-radius:4px;border:1px solid rgba(255,255,255,.2);cursor:pointer;flex-shrink:0;overflow:hidden;position:relative}.color-swatch input[type=color]{position:absolute;inset:-4px;width:calc(100% + 8px);height:calc(100% + 8px);opacity:0;cursor:pointer;border:none;padding:0}.color-hex{font-size:11px;font-family:var(--font-mono);color:var(--text-secondary);flex:1}.texture-upload{position:relative;width:100%;aspect-ratio:1;border-radius:var(--radius-md);border:2px dashed var(--border-default);overflow:hidden;cursor:pointer;transition:all .2s;background:var(--bg-base)}.texture-upload:hover{border-color:var(--accent-primary);background:var(--accent-glow)}.texture-upload img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.texture-upload input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;z-index:2}.texture-upload-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;z-index:1}.texture-upload-placeholder-icon{font-size:28px;opacity:.4}.texture-upload-placeholder p{font-size:11px;color:var(--text-muted);text-align:center;padding:0 var(--space-4)}.texture-actions{display:flex;gap:var(--space-2);margin-top:var(--space-2)}.xy-input-wrap{position:relative;display:flex;align-items:center}.xy-axis-label{position:absolute;left:8px;font-size:10px;font-weight:700;color:var(--accent-primary);pointer-events:none;font-family:var(--font-mono)}.xy-input-wrap .number-input{padding-left:20px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:7px 14px;border-radius:var(--radius-sm);font-size:12px;font-weight:500;font-family:var(--font-sans);cursor:pointer;transition:all .15s;border:1px solid transparent;white-space:nowrap;flex-shrink:0;color:#fff}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-dark));color:#fff;box-shadow:0 2px 12px var(--accent-glow)}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 20px var(--accent-glow)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--bg-card);color:var(--text-secondary);border-color:var(--border-default)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-strong)}.btn-ghost{background:transparent;color:var(--text-muted);border-color:transparent}.btn-ghost:hover:not(:disabled){background:var(--bg-hover);color:var(--text-secondary)}.btn-danger{background:transparent;color:var(--accent-danger);border-color:#f8717133}.btn-danger:hover:not(:disabled){background:#f871711a}.btn-sm{padding:4px 10px;font-size:11px}.btn-icon{padding:6px;width:30px;height:30px}.btn-full{width:100%}.download-panel{padding:var(--space-3);border-top:1px solid var(--border-subtle);flex-shrink:0}.download-btn{background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-secondary) 100%);border:none;width:100%;padding:10px;border-radius:var(--radius-md);color:#fff;font-size:13px;font-weight:600;font-family:var(--font-sans);display:flex;align-items:center;justify-content:center;gap:var(--space-2);cursor:pointer;transition:all .2s;box-shadow:0 4px 20px #6c63ff4d}.download-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 28px #6c63ff73}.download-btn:disabled{opacity:.3;cursor:not-allowed;transform:none}.download-stats{display:flex;justify-content:space-between;margin-top:var(--space-2)}.download-stat{font-size:10px;color:var(--text-disabled);font-family:var(--font-mono)}.download-stat span{color:var(--text-muted)}.loading-overlay{position:absolute;inset:0;background:#0a0b0fd9;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);z-index:50;backdrop-filter:blur(4px)}.loading-spinner{width:40px;height:40px;border:3px solid var(--border-default);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:13px;color:var(--text-secondary)}.loading-sub{font-size:11px;color:var(--text-muted)}.toggle{position:relative;display:inline-flex;align-items:center;cursor:pointer;gap:var(--space-2)}.toggle input{opacity:0;width:0;height:0;position:absolute}.toggle-track{width:32px;height:18px;background:var(--bg-base);border:1px solid var(--border-default);border-radius:var(--radius-full);position:relative;transition:all .2s}.toggle-track:after{content:"";position:absolute;width:12px;height:12px;border-radius:50%;background:var(--text-muted);top:2px;left:2px;transition:all .2s}.toggle input:checked~.toggle-track{background:var(--accent-primary);border-color:var(--accent-primary)}.toggle input:checked~.toggle-track:after{left:16px;background:#fff}.toggle-label{font-size:11px;color:var(--text-secondary)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-2)}.divider{height:1px;background:var(--border-subtle);margin:var(--space-2) 0}.toast-container{position:fixed;bottom:24px;left:50%;transform:translate(-50%);z-index:1000;display:flex;flex-direction:column-reverse;gap:var(--space-2);pointer-events:none}.toast{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:10px 16px;font-size:12px;color:var(--text-primary);box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:var(--space-2);animation:toastIn .3s ease;white-space:nowrap}.toast.success{border-left:3px solid var(--accent-success)}.toast.error{border-left:3px solid var(--accent-danger)}.toast.info{border-left:3px solid var(--accent-primary)}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.viewport-controls{position:absolute;top:var(--space-4);right:var(--space-4);display:flex;flex-direction:column;gap:var(--space-1);z-index:10}.viewport-controls .btn{background:#13141cd9;backdrop-filter:blur(8px);border:1px solid var(--border-default);color:var(--text-secondary);width:32px;height:32px;padding:0;border-radius:var(--radius-sm)}.viewport-controls .btn:hover{background:var(--bg-active);color:var(--text-primary);border-color:var(--border-strong)}.stats-bar{position:absolute;top:var(--space-4);left:var(--space-4);display:flex;gap:var(--space-2);z-index:10}.stat-chip{background:#13141cd9;backdrop-filter:blur(8px);border:1px solid var(--border-default);border-radius:var(--radius-full);padding:4px 10px;font-size:10px;color:var(--text-secondary);font-family:var(--font-mono);display:flex;align-items:center;gap:5px}.stat-chip span{color:var(--text-muted)}.action-bar{display:flex;gap:var(--space-2);padding:var(--space-2) 0}.section-badge{font-size:9px;padding:1px 6px;border-radius:var(--radius-full);background:var(--accent-glow);color:var(--accent-light);border:1px solid rgba(108,99,255,.3);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.number-input::-webkit-outer-spin-button,.number-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.number-input{-moz-appearance:textfield}[data-theme=light]{--bg-base: #f1f5f9;--bg-surface: #ffffff;--bg-panel: #f8fafc;--bg-card: #ffffff;--bg-hover: #e2e8f0;--bg-active: #cbd5e1;--border-subtle: rgba(0, 0, 0, .08);--border-default: rgba(0, 0, 0, .15);--border-strong: rgba(0, 0, 0, .25);--accent-primary: #5a52d5;--accent-light: #7c74f5;--accent-dark: #3e37a0;--accent-glow: rgba(90, 82, 213, .25);--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #475569;--text-dim: #64748b;--text-disabled: #94a3b8}