:root{--bg-primary: #0b0f17;--bg-surface: rgba(18, 24, 38, .75);--bg-surface-hover: rgba(28, 36, 56, .85);--border-color: rgba(255, 255, 255, .08);--border-focus: rgba(99, 102, 241, .5);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--accent-color: #6366f1;--accent-glow: rgba(99, 102, 241, .25);--accent-hover: #4f46e5;--success-color: #10b981;--warning-color: #f59e0b;--danger-color: #ef4444;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 9999px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}*{box-sizing:border-box;margin:0;padding:0}body,html{width:100%;height:100%;overflow:hidden;background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;user-select:none}#app{position:relative;width:100vw;height:100vh;overflow:hidden}#viewer-container{position:absolute;inset:0;width:100%;height:100%;z-index:1;outline:none;cursor:grab}#viewer-container:active{cursor:grabbing}.glass-panel{background:var(--bg-surface);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);box-shadow:0 10px 30px #00000080,inset 0 1px #ffffff14;border-radius:var(--radius-md);color:var(--text-primary)}.top-bar{position:absolute;top:16px;left:16px;right:16px;z-index:10;display:flex;justify-content:space-between;align-items:center;pointer-events:none}.top-bar-left,.top-bar-right{display:flex;align-items:center;gap:12px;pointer-events:auto}.brand-badge{display:flex;align-items:center;gap:10px;padding:8px 16px;border-radius:var(--radius-full)}.brand-logo{width:22px;height:22px;background:linear-gradient(135deg,#6366f1,#a855f7);border-radius:6px;display:flex;align-items:center;justify-content:center;box-shadow:0 0 12px var(--accent-glow)}.brand-logo svg{width:14px;height:14px;fill:#fff}.brand-text{font-weight:600;font-size:14px;letter-spacing:-.01em}.file-info-badge{display:flex;align-items:center;gap:8px;padding:8px 14px;font-size:13px;font-family:var(--font-mono);color:var(--text-secondary)}.file-status-dot{width:8px;height:8px;border-radius:50%;background-color:var(--success-color);box-shadow:0 0 8px #10b98199}.file-status-dot.loading{background-color:var(--warning-color);box-shadow:0 0 8px #f59e0b99;animation:pulse 1.5s infinite}.file-status-dot.error{background-color:var(--danger-color);box-shadow:0 0 8px #ef444499}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.85)}}.stats-badge{display:flex;align-items:center;gap:12px;padding:8px 14px;font-size:12px;font-family:var(--font-mono);color:var(--text-secondary)}.stat-item{display:flex;align-items:center;gap:4px}.stat-val{color:var(--text-primary);font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 14px;font-size:13px;font-weight:500;border-radius:var(--radius-sm);cursor:pointer;border:1px solid var(--border-color);background:var(--bg-surface);color:var(--text-primary);transition:all .2s ease;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);pointer-events:auto}.btn:hover{background:var(--bg-surface-hover);border-color:#ffffff29;transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--accent-color);border-color:var(--accent-hover);box-shadow:0 4px 14px var(--accent-glow)}.btn-primary:hover{background:var(--accent-hover)}.btn-icon{width:36px;height:36px;padding:0;border-radius:var(--radius-sm)}.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.sidebar{position:absolute;top:74px;right:16px;width:320px;max-height:calc(100vh - 96px);overflow-y:auto;z-index:10;padding:18px;display:flex;flex-direction:column;gap:18px;transition:transform .3s cubic-bezier(.16,1,.3,1),opacity .3s ease}.sidebar.hidden{transform:translate(360px);opacity:0;pointer-events:none}.sidebar-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-color);padding-bottom:12px}.sidebar-title{font-size:14px;font-weight:600;letter-spacing:-.01em;display:flex;align-items:center;gap:8px}.section-group{display:flex;flex-direction:column;gap:8px}.section-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.control-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--text-secondary)}.select-input{background:#00000059;border:1px solid var(--border-color);color:var(--text-primary);padding:6px 10px;border-radius:var(--radius-sm);font-size:12px;outline:none;cursor:pointer;transition:border-color .2s}.select-input:focus{border-color:var(--border-focus)}.range-container{display:flex;align-items:center;gap:10px;width:100%}.range-input{flex:1;-webkit-appearance:none;appearance:none;height:4px;border-radius:2px;background:#ffffff26;outline:none}.range-input::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent-color);cursor:pointer;box-shadow:0 0 8px var(--accent-glow);transition:transform .1s}.range-input::-webkit-slider-thumb:hover{transform:scale(1.2)}.range-val{font-family:var(--font-mono);font-size:12px;min-width:38px;text-align:right;color:var(--text-primary)}.switch{position:relative;display:inline-block;width:38px;height:20px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:#ffffff26;transition:.2s;border-radius:20px}.slider:before{position:absolute;content:"";height:14px;width:14px;left:3px;bottom:3px;background-color:#fff;transition:.2s;border-radius:50%}input:checked+.slider{background-color:var(--accent-color)}input:checked+.slider:before{transform:translate(18px)}.color-options{display:flex;gap:8px}.color-btn{width:24px;height:24px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:transform .15s,border-color .15s}.color-btn:hover{transform:scale(1.15)}.color-btn.active{border-color:#fff;box-shadow:0 0 8px #fff6}.bottom-bar{position:absolute;bottom:16px;left:50%;transform:translate(-50%);z-index:10;display:flex;align-items:center;gap:16px;padding:8px 18px;border-radius:var(--radius-full);font-size:12px;color:var(--text-secondary);pointer-events:none}.help-shortcut{display:flex;align-items:center;gap:6px}.kbd{background:#ffffff1a;border:1px solid rgba(255,255,255,.15);border-radius:4px;padding:2px 6px;font-size:11px;font-family:var(--font-mono);color:var(--text-primary)}.loading-overlay{position:absolute;inset:0;background:#0b0f17d9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:50;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;transition:opacity .4s ease,visibility .4s ease}.loading-overlay.hidden{opacity:0;visibility:hidden;pointer-events:none}.spinner{width:44px;height:44px;border:3px solid rgba(99,102,241,.2);border-top-color:var(--accent-color);border-radius:50%;animation:spin .9s cubic-bezier(.5,0,.5,1) infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-title{font-size:16px;font-weight:600;color:var(--text-primary)}.loading-subtitle{font-size:13px;color:var(--text-muted);font-family:var(--font-mono)}.drag-overlay{position:absolute;inset:20px;border:2px dashed var(--accent-color);border-radius:var(--radius-lg);background:#0f172ad9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:60;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;opacity:0;visibility:hidden;pointer-events:none;transition:all .2s ease}.drag-overlay.active{opacity:1;visibility:visible;pointer-events:auto}.drag-icon{width:56px;height:56px;border-radius:50%;background:var(--accent-glow);display:flex;align-items:center;justify-content:center;color:var(--accent-color)}.drag-icon svg{width:28px;height:28px}.drag-title{font-size:18px;font-weight:600;color:var(--text-primary)}.drag-subtitle{font-size:13px;color:var(--text-muted)}.toast{position:absolute;bottom:24px;right:24px;z-index:70;padding:12px 20px;border-radius:var(--radius-md);background:#1e293bf2;border:1px solid var(--border-color);backdrop-filter:blur(16px);box-shadow:0 10px 25px #0006;font-size:13px;display:flex;align-items:center;gap:10px;transform:translateY(60px);opacity:0;transition:all .3s cubic-bezier(.16,1,.3,1);pointer-events:none}.toast.show{transform:translateY(0);opacity:1}.toast.error{border-color:#ef444466;color:#fca5a5}.toast.success{border-color:#10b98166;color:#86efac}.namma-status{position:fixed;bottom:72px;left:20px;z-index:100;background:#17232ded;color:#fff;padding:10px 14px;border-radius:10px;font:13px sans-serif;max-width:calc(100vw - 40px)}.namma-status a{color:#8ee8e3;margin-left:12px}.namma-walking{position:fixed;left:16px;top:90px;width:280px;max-height:calc(100vh - 190px);overflow:auto;z-index:110;padding:14px;color:#fff;font:13px/1.5 sans-serif}.namma-walking summary{cursor:pointer;font-weight:600}.namma-walking button{display:block;width:100%;padding:8px;margin:8px 0;cursor:pointer}.namma-walking button:disabled{opacity:.4;cursor:not-allowed}.namma-walking label{display:block;margin:8px 0}.namma-walking input[type=number]{width:100px;margin-left:6px}.namma-walking canvas{background:#14252c;width:240px;max-width:100%}