:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a25;--bg-card: rgba(26, 26, 37, .8);--bg-glass: rgba(255, 255, 255, .03);--text-primary: #ffffff;--text-secondary: #a0a0b0;--text-muted: #606070;--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--border-color: rgba(255, 255, 255, .08);--border-hover: rgba(255, 255, 255, .15);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(99, 102, 241, .3);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;letter-spacing:-.02em}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{color:var(--text-secondary)}.app-container{display:flex;min-height:100vh}.sidebar{width:280px;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;position:fixed;height:100vh;z-index:100}.sidebar-header{padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.sidebar-content{flex:1;overflow-y:auto;padding:var(--spacing-md)}.sidebar-footer{padding:var(--spacing-md);border-top:1px solid var(--border-color)}.main-content{flex:1;margin-left:280px;display:flex;flex-direction:column}.toolbar{height:60px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);display:flex;align-items:center;padding:0 var(--spacing-lg);gap:var(--spacing-md);position:sticky;top:0;z-index:50}.canvas-container{flex:1;position:relative;overflow:hidden;background:var(--bg-tertiary);background-image:radial-gradient(circle at 25% 25%,rgba(99,102,241,.05) 0%,transparent 50%),radial-gradient(circle at 75% 75%,rgba(139,92,246,.05) 0%,transparent 50%)}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all var(--transition-normal)}.card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-md)}.card-title{font-size:1.1rem;font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-size:.9rem;font-weight:500;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover:not(:disabled){box-shadow:var(--shadow-glow);transform:translateY(-1px)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background:var(--bg-card);border-color:var(--border-hover)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--bg-glass);color:var(--text-primary)}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-icon{width:40px;height:40px;padding:0;border-radius:var(--radius-md)}.btn-sm{padding:var(--spacing-xs) var(--spacing-sm);font-size:.8rem}.btn-lg{padding:var(--spacing-md) var(--spacing-xl);font-size:1rem}.input-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.input-label{font-size:.85rem;font-weight:500;color:var(--text-secondary)}.input{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-size:.95rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);transition:all var(--transition-fast)}.input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.input::placeholder{color:var(--text-muted)}.file-upload{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);border:2px dashed var(--border-color);border-radius:var(--radius-lg);background:var(--bg-glass);cursor:pointer;transition:all var(--transition-normal)}.file-upload:hover{border-color:var(--accent-primary);background:#6366f10d}.file-upload.drag-over{border-color:var(--accent-primary);background:#6366f11a;transform:scale(1.01)}.file-upload input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}.file-upload-icon{font-size:3rem;color:var(--text-muted);margin-bottom:var(--spacing-md)}.file-upload-text{color:var(--text-secondary);text-align:center}.file-upload-text strong{color:var(--accent-primary)}.room-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.room-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.room-item:hover{background:var(--bg-tertiary);border-color:var(--border-hover)}.room-item.active{border-color:var(--accent-primary);background:#6366f11a}.room-color{width:24px;height:24px;border-radius:var(--radius-sm);border:2px solid rgba(255,255,255,.2)}.room-info{flex:1;min-width:0}.room-name{font-size:.9rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-area{font-size:.75rem;color:var(--text-muted)}.tool-group{display:flex;gap:var(--spacing-xs);padding:var(--spacing-xs);background:var(--bg-tertiary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.tool-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);background:transparent;border:none;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.tool-btn:hover{background:var(--bg-card);color:var(--text-primary)}.tool-btn.active{background:var(--accent-primary);color:#fff}.zoom-controls{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.zoom-value{font-size:.8rem;font-weight:500;color:var(--text-secondary);min-width:50px;text-align:center}.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg);padding:var(--spacing-lg)}.project-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-normal);cursor:pointer}.project-card:hover{border-color:var(--accent-primary);transform:translateY(-4px);box-shadow:var(--shadow-lg)}.project-thumbnail{height:160px;background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:3rem}.project-details{padding:var(--spacing-md)}.project-name{font-size:1.1rem;font-weight:600;margin-bottom:var(--spacing-xs)}.project-meta{font-size:.8rem;color:var(--text-muted)}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .2s ease}.modal{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-xl);max-width:500px;width:90%;max-height:90vh;overflow:auto;animation:slideUp .3s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.modal-title{font-size:1.25rem;font-weight:600}.modal-body{padding:var(--spacing-lg)}.modal-footer{display:flex;justify-content:flex-end;gap:var(--spacing-sm);padding:var(--spacing-lg);border-top:1px solid var(--border-color)}.toast-container{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-sm);z-index:2000}.toast{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);animation:slideIn .3s ease}.toast.success{border-color:var(--success)}.toast.error{border-color:var(--error)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center}.empty-state-icon{font-size:4rem;color:var(--text-muted);margin-bottom:var(--spacing-lg)}.empty-state-title{font-size:1.25rem;font-weight:600;margin-bottom:var(--spacing-sm)}.empty-state-text{color:var(--text-muted);margin-bottom:var(--spacing-lg)}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-size:1.5rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.divider{height:1px;background:var(--border-color);margin:var(--spacing-md) 0}.color-picker{display:flex;gap:var(--spacing-xs);flex-wrap:wrap}.color-option{width:28px;height:28px;border-radius:var(--radius-sm);border:2px solid transparent;cursor:pointer;transition:all var(--transition-fast)}.color-option:hover{transform:scale(1.1)}.color-option.selected{border-color:#fff;box-shadow:var(--shadow-sm)}.loading{display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl)}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(100px)}to{opacity:1;transform:translate(0)}}@keyframes spin{to{transform:rotate(360deg)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media(max-width:768px){.sidebar{width:100%;height:auto;position:relative}.main-content{margin-left:0}.project-grid{grid-template-columns:1fr}}