*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #0a0a0b;--color-surface: #141416;--color-surface-hover: #1c1c1f;--color-border: #2a2a2e;--color-text: #fafafa;--color-text-muted: #a1a1aa;--color-primary: #3b82f6;--color-primary-hover: #2563eb;--color-error: #ef4444;--color-success: #22c55e;--radius: 8px;--font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: ui-monospace, "SF Mono", Monaco, "Courier New", monospace}html,body{height:100%;font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}#app{height:100%;display:flex;flex-direction:column}.header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);flex-shrink:0}.header-title{font-size:1.25rem;font-weight:600;letter-spacing:-.025em}.header-actions{display:flex;align-items:center;gap:.75rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1rem;font-size:.875rem;font-weight:500;border-radius:var(--radius);border:none;cursor:pointer;transition:background-color .15s ease,transform .1s ease;white-space:nowrap}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover)}.btn-secondary{background-color:var(--color-surface-hover);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background-color:var(--color-border)}.btn-icon{padding:.625rem}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden}.viewer-section{flex:1;position:relative;min-height:300px;background-color:var(--color-bg)}.viewer-canvas{width:100%;height:100%;display:block}.loading-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background-color:#0a0a0be6;gap:1rem;z-index:10}.loading-overlay.hidden{display:none}.spinner{width:40px;height:40px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--color-text-muted);font-size:.875rem}.login-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;padding:2rem;text-align:center}.login-screen h2{font-size:1.5rem;font-weight:600}.login-screen p{color:var(--color-text-muted);max-width:400px}.model-info{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;background-color:var(--color-surface);border-top:1px solid var(--color-border);flex-shrink:0;gap:1rem;flex-wrap:wrap}.model-details{display:flex;flex-direction:column;gap:.25rem;min-width:0}.model-title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.model-meta{display:flex;align-items:center;gap:.75rem;font-size:.8125rem;color:var(--color-text-muted);flex-wrap:wrap}.model-meta a{color:var(--color-primary);text-decoration:none}.model-meta a:hover{text-decoration:underline}.model-controls{display:flex;gap:.5rem;flex-shrink:0}.error-message{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:2rem;text-align:center;color:var(--color-error)}.error-message p{max-width:400px}.user-info{display:flex;align-items:center;gap:.75rem;padding:.5rem .75rem;background-color:var(--color-surface-hover);border-radius:var(--radius);font-size:.875rem}.user-avatar{width:28px;height:28px;border-radius:50%;background-color:var(--color-border)}.callback-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;gap:1rem}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;gap:1rem;padding:2rem;text-align:center;color:var(--color-text-muted)}.toast-container{position:fixed;bottom:1.5rem;right:1.5rem;z-index:100;display:flex;flex-direction:column;gap:.5rem}.toast{padding:.875rem 1rem;background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);font-size:.875rem;box-shadow:0 4px 12px #0000004d;animation:slideIn .2s ease}.toast.error{border-color:var(--color-error)}.toast.success{border-color:var(--color-success)}@keyframes slideIn{0%{opacity:0;transform:translate(1rem)}to{opacity:1;transform:translate(0)}}@media(max-width:640px){.header{padding:.875rem 1rem}.header-title{font-size:1rem}.model-info{padding:.875rem 1rem}.model-controls{width:100%}.model-controls .btn{flex:1}}