:root{--bg:#0d0f14;--surface:#161a23;--surface-2:#1e2333;--surface-3:#252b3b;--border:#2c3248;--border-soft:#1f2436;--text:#94a3b8;--text-h:#e2e8f0;--text-muted:#566278;--accent:#7c6aff;--accent-glow:#7c6aff59;--accent-dim:#7c6aff26;--accent-hover:#9b8aff;--success:#34d399;--danger:#f87171;--canvas-bg:#f8f9fa;--sans:"Inter", system-ui, "Segoe UI", Roboto, sans-serif;--heading:"Inter", system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, "Cascadia Code", Consolas, monospace;--shadow-sm:0 1px 4px #0006;--shadow-md:0 4px 16px #00000080;--shadow-lg:0 12px 40px #0009;--shadow-canvas:0 0 0 1px #ffffff0f, 0 8px 32px #000000b3;--r-sm:6px;--r-md:10px;--r-lg:16px;font:15px/1.5 var(--sans);letter-spacing:.15px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,:before,:after{box-sizing:border-box}body{background:var(--bg);margin:0}#root{flex-direction:column;min-height:100svh;display:flex}h1,h2,h3{font-family:var(--heading);color:var(--text-h);margin:0;font-weight:600}p{margin:0}.lobby{background:radial-gradient(ellipse 80% 50% at 50% -10%, #7c6aff2e 0%, transparent 60%), var(--bg);flex-direction:column;justify-content:center;align-items:center;min-height:100svh;padding:24px;display:flex}.lobby-brand{align-items:center;gap:12px;margin-bottom:8px;display:flex}.lobby-logo{border-radius:var(--r-md);background:linear-gradient(135deg, var(--accent) 0%, #a78bfa 100%);width:44px;height:44px;box-shadow:0 0 20px var(--accent-glow);justify-content:center;align-items:center;font-size:22px;display:flex}.lobby-title{letter-spacing:-1px;background:linear-gradient(135deg, var(--text-h) 0%, var(--accent-hover) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:36px}.lobby-subtitle{color:var(--text-muted);letter-spacing:.3px;margin-bottom:36px;font-size:14px}.lobby-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);width:100%;max-width:400px;box-shadow:var(--shadow-lg);padding:32px}.lobby-fields{flex-direction:column;gap:18px;margin-bottom:24px;display:flex}.field{text-align:left;flex-direction:column;gap:6px;display:flex}.field label{letter-spacing:.6px;text-transform:uppercase;color:var(--text-muted);font-size:12px;font-weight:600}.field input{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-h);font:inherit;outline:none;padding:10px 14px;font-size:14px;transition:border-color .15s,box-shadow .15s}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.field input::placeholder{color:var(--text-muted)}.lobby-divider{border:none;border-top:1px solid var(--border);margin:4px 0}.lobby-actions{flex-direction:column;gap:10px;display:flex}.btn{border-radius:var(--r-sm);cursor:pointer;font:14px/1 var(--sans);letter-spacing:.2px;white-space:nowrap;border:none;justify-content:center;align-items:center;gap:7px;padding:11px 20px;font-weight:600;transition:background .15s,box-shadow .15s,transform .1s,opacity .15s;display:inline-flex}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 0 12px var(--accent-glow)}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 0 18px var(--accent-glow)}.btn-secondary{background:var(--surface-2);color:var(--text-h);border:1px solid var(--border)}.btn-secondary:hover{background:var(--surface-3);border-color:var(--accent)}.btn-ghost{color:var(--text);border:1px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--surface-2);color:var(--text-h)}.btn-icon{padding:8px 10px}.room-layout{background:var(--bg);height:100svh;display:flex;overflow:hidden}.sidebar{background:var(--surface);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:220px;display:flex;overflow:hidden}.sidebar-header{border-bottom:1px solid var(--border-soft);padding:20px 16px 16px}.sidebar-room-name{letter-spacing:.8px;text-transform:uppercase;color:var(--text-muted);margin-bottom:4px;font-size:11px;font-weight:700}.sidebar-room-id{color:var(--text-h);font-size:16px;font-weight:600;font-family:var(--mono);letter-spacing:1px}.sidebar-section-label{letter-spacing:.8px;text-transform:uppercase;color:var(--text-muted);padding:16px 16px 8px;font-size:11px;font-weight:700}.user-list{flex-direction:column;gap:2px;max-height:180px;margin:0;padding:0 8px;list-style:none;display:flex;overflow-y:auto}.user-item{border-radius:var(--r-sm);align-items:center;gap:10px;padding:8px 10px;transition:background .1s;display:flex}.user-item:hover{background:var(--surface-2)}.user-avatar{background:linear-gradient(135deg, var(--accent) 0%, #a78bfa 100%);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:11px;font-weight:700;display:flex}.user-name{color:var(--text-h);text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:500;overflow:hidden}.user-status-dot{background:var(--success);width:7px;height:7px;box-shadow:0 0 6px var(--success);border-radius:50%;flex-shrink:0;margin-left:auto}.canvas-area{background:var(--bg);flex-direction:column;flex:1;display:flex;overflow:hidden}.canvas-topbar{border-bottom:1px solid var(--border-soft);flex-shrink:0;justify-content:flex-end;align-items:center;gap:8px;padding:10px 16px;display:flex}.canvas-scroll{flex:1;justify-content:center;align-items:center;padding:24px;display:flex;overflow:auto}.canvas-frame{border-radius:var(--r-md);box-shadow:var(--shadow-canvas);border:1px solid #ffffff12;align-self:center;line-height:0;position:relative;overflow:hidden}canvas{background:var(--canvas-bg);cursor:crosshair;display:block}.toolbar{background:var(--surface);border-top:1px solid var(--border);flex-wrap:wrap;flex-shrink:0;align-items:center;gap:6px;padding:10px 16px;display:flex}.toolbar-group{align-items:center;gap:6px;display:flex}.toolbar-divider{background:var(--border);width:1px;height:28px;margin:0 4px}.toolbar-label{letter-spacing:.5px;text-transform:uppercase;color:var(--text-muted);font-size:11px;font-weight:600}.color-swatch-wrapper{border-radius:var(--r-sm);border:2px solid var(--border);cursor:pointer;width:34px;height:34px;transition:border-color .15s;position:relative;overflow:hidden}.color-swatch-wrapper:hover{border-color:var(--accent)}.color-swatch-wrapper input[type=color]{cursor:pointer;background:0 0;border:none;width:calc(100% + 8px);height:calc(100% + 8px);padding:0;position:absolute;inset:-4px}.brush-range-wrapper{align-items:center;gap:8px;display:flex}.brush-size-preview{justify-content:center;align-items:center;width:24px;height:24px;display:flex}input[type=range]{appearance:none;background:var(--surface-3);cursor:pointer;border-radius:99px;outline:none;width:110px;height:4px}input[type=range]::-webkit-slider-thumb{appearance:none;background:var(--accent);width:16px;height:16px;box-shadow:0 0 6px var(--accent-glow);cursor:pointer;border-radius:50%;transition:box-shadow .15s}input[type=range]:hover::-webkit-slider-thumb{box-shadow:0 0 10px var(--accent-glow)}input[type=range]::-moz-range-thumb{background:var(--accent);cursor:pointer;border:none;border-radius:50%;width:16px;height:16px}.eraser-btn{padding:7px 14px;font-size:13px}.eraser-btn.active{background:var(--danger);color:#fff;border-color:#0000;box-shadow:0 0 10px #f8717159}.eraser-btn.active:hover{background:#f87171cc}.size-badge{text-align:center;min-width:28px;font-size:12px;font-weight:600;font-family:var(--mono);color:var(--text-muted)}.sidebar-chat-label{border-top:1px solid var(--border-soft);margin-top:4px;padding-top:12px}.chat-panel{flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}.chat-messages{flex-direction:column;flex:1;gap:6px;padding:8px 12px;display:flex;overflow-y:auto}.chat-message{color:var(--text);word-break:break-word;font-size:13px;line-height:1.45}.chat-username{color:var(--accent-hover);font-weight:600}.chat-form{border-top:1px solid var(--border-soft);flex-shrink:0;gap:6px;padding:10px 10px 12px;display:flex}.chat-input{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-h);font:inherit;outline:none;flex:1;min-width:0;padding:7px 10px;font-size:13px;transition:border-color .15s,box-shadow .15s}.chat-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.chat-input::placeholder{color:var(--text-muted)}.chat-send{flex-shrink:0;padding:7px 12px;font-size:13px}.chat-sidebar{background:var(--surface);border-left:1px solid var(--border);flex-direction:column;flex-shrink:0;width:350px;display:flex}