:root{--bg:#fff;--fg:#000;--fg-secondary:#666;--border:#e0e0e0;--hover:#f5f5f5;--radius:8px;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;font-family:var(--font);background:var(--bg);color:var(--fg);overflow:hidden}@media (width<=768px){.toolbar-panel.floating{width:calc(100vw - 32px);max-height:60vh;bottom:80px;left:16px}.toolbar-toggle-btn{width:48px;height:48px;bottom:16px;left:16px}.chat-panel.floating{width:calc(100vw - 32px);max-height:60vh;bottom:80px;right:16px}.chat-toggle-btn{width:48px;height:48px;bottom:16px;right:16px}.lobby-title{font-size:28px}.lobby-actions{width:100%;max-width:320px}.btn-large{padding:12px 20px;font-size:15px}}@media (width<=480px){.toolbar-panel.floating{width:calc(100vw - 24px);bottom:70px;left:12px}.toolbar-toggle-btn{width:44px;height:44px;bottom:12px;left:12px}.chat-panel.floating{width:calc(100vw - 24px);bottom:70px;right:12px}.chat-toggle-btn{width:44px;height:44px;bottom:12px;right:12px}.header{height:48px;padding:0 12px}.logo{font-size:13px}.btn{padding:6px 12px;font-size:13px}}.btn{border:2px solid var(--fg);background:var(--bg);color:var(--fg);font-family:var(--font);cursor:pointer;border-radius:var(--radius);-webkit-user-select:none;user-select:none;outline:none;justify-content:center;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:600;transition:all .15s;display:inline-flex}.btn:hover{background:var(--fg);color:var(--bg)}.btn:active{transform:scale(.96)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn:disabled:hover{background:var(--bg);color:var(--fg);transform:none}.btn-primary{background:var(--fg);color:var(--bg)}.btn-primary:hover{background:#222}.btn-ghost{border-color:#0000}.btn-ghost:hover{background:var(--hover);color:var(--fg)}.btn-icon{border-radius:50%;width:40px;height:40px;padding:0;font-size:18px}.btn-icon.btn-active{background:var(--fg);color:var(--bg)}.btn-small{padding:4px 10px;font-size:12px}.btn-large{padding:14px 28px;font-size:16px}.input{border:2px solid var(--fg);background:var(--bg);width:100%;color:var(--fg);font-family:var(--font);border-radius:var(--radius);outline:none;padding:10px 14px;font-size:14px;transition:border-color .15s}.input:focus{border-color:#888}.input::placeholder{color:var(--fg-secondary)}.modal-bg{z-index:100;background:#0000000a;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--bg);border:2px solid var(--fg);border-radius:12px;flex-direction:column;gap:18px;width:380px;max-width:90vw;padding:36px;display:flex}.modal-title{letter-spacing:-.5px;font-size:26px;font-weight:900}.modal-subtitle{color:var(--fg-secondary);font-size:14px}.modal form{flex-direction:column;gap:12px;display:flex}.header{border-bottom:2px solid var(--fg);background:var(--fg);color:var(--bg);flex-shrink:0;justify-content:space-between;align-items:center;height:52px;padding:0 16px;display:flex}.header-left{align-items:center;gap:12px;display:flex}.header-right{align-items:center;gap:8px;display:flex}.logo{letter-spacing:-.3px;align-items:center;gap:6px;font-size:15px;font-weight:900;display:flex}.logo-icon{width:22px;height:22px}.partner-info{opacity:.75;font-size:13px}.partner-info strong{opacity:1;font-weight:600}.header .btn-ghost{color:var(--bg);border-color:#ffffff40}.header .btn-ghost:hover{background:#ffffff1f}.header .btn-icon{color:var(--bg);border-color:#ffffff40}.header .btn-icon.btn-active{background:#ffffff2e}.lobby{flex-direction:column;justify-content:center;align-items:center;gap:28px;min-height:100%;padding:32px;display:flex}.lobby-hero{text-align:center;flex-direction:column;align-items:center;gap:10px;display:flex}.lobby-title{letter-spacing:-1.5px;font-size:40px;font-weight:900}.lobby-subtitle{color:var(--fg-secondary);max-width:340px;font-size:15px}.lobby-username{color:var(--fg-secondary);font-size:13px}.lobby-actions{flex-direction:column;gap:10px;width:280px;display:flex}.lobby-info{width:100%;max-width:420px}.info-card{border:2px solid var(--fg);border-radius:var(--radius);padding:18px}.info-card-title{text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px;font-size:13px;font-weight:700}.info-list{flex-direction:column;gap:7px;list-style:none;display:flex}.info-list li{color:var(--fg-secondary);padding-left:14px;font-size:13px;position:relative}.info-list li:before{content:"—";color:var(--fg);position:absolute;left:0}.room-container{flex-direction:column;height:100%;display:flex}.room-body{flex:1;display:flex;overflow:hidden}.canvas-area{flex-direction:column;flex:1;width:100%;display:flex;position:relative;overflow:hidden}.drawing-canvas{cursor:crosshair;touch-action:none;background:#fff;flex:1;display:block}.toolbar-bottom{border-top:2px solid var(--fg);flex-shrink:0}.toolbar-toggle-btn{background:var(--fg);width:56px;height:56px;color:var(--bg);cursor:pointer;z-index:1000;border:none;border-radius:50%;justify-content:center;align-items:center;transition:transform .2s,box-shadow .2s;display:flex;position:fixed;bottom:20px;left:20px;box-shadow:0 4px 12px #00000026}.toolbar-toggle-btn:hover{transform:scale(1.05);box-shadow:0 6px 16px #0003}.toolbar-toggle-btn:active{transform:scale(.95)}.toolbar-panel.floating{border:2px solid var(--fg);background:var(--bg);z-index:1000;border-radius:12px;flex-direction:column;width:340px;max-width:calc(100vw - 40px);max-height:500px;display:flex;position:fixed;bottom:90px;left:20px;box-shadow:0 8px 24px #00000026}.toolbar-header{border-bottom:2px solid var(--fg);background:var(--fg);color:var(--bg);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.toolbar-header h3{margin:0;font-size:14px;font-weight:700}.toolbar-close-btn{color:var(--bg);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:18px}.toolbar-close-btn:hover{background:#ffffff1a}.toolbar-content{flex-direction:column;gap:16px;padding:16px;display:flex;overflow-y:auto}.toolbar{background:var(--bg);flex-wrap:wrap;align-items:center;gap:18px;padding:8px 16px;display:flex}.toolbar-section{flex-direction:column;gap:8px;display:flex}.toolbar-label{text-transform:uppercase;letter-spacing:.6px;color:var(--fg-secondary);font-size:11px;font-weight:700}.tool-buttons,.color-buttons,.width-buttons{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.tool-btn{border:2px solid var(--fg);background:var(--bg);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;width:40px;height:40px;transition:all .12s;display:flex}.tool-btn:hover{background:var(--fg)}.tool-btn:hover svg{stroke:var(--bg)}.tool-btn.active{background:var(--fg)}.tool-btn svg{stroke:currentColor;stroke-width:2px;fill:none;width:20px;height:20px}.tool-btn.active svg{stroke:var(--bg)}.color-btn{cursor:pointer;border:2px solid #0000;border-radius:50%;width:28px;height:28px;transition:transform .12s,border-color .12s}.color-btn:hover{transform:scale(1.15)}.color-btn.active{border-color:var(--fg);transform:scale(1.1)}.width-btn{border:2px solid var(--fg);background:var(--bg);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;width:40px;height:40px;transition:background .12s;display:flex}.width-btn:hover{background:var(--hover)}.width-btn.active{background:var(--fg)}.width-btn.active .width-dot{background:var(--bg)}.width-dot{background:var(--fg);border-radius:50%;transition:background .12s}.chat-toggle-btn{background:var(--fg);width:56px;height:56px;color:var(--bg);cursor:pointer;z-index:1000;border:none;border-radius:50%;justify-content:center;align-items:center;transition:transform .2s,box-shadow .2s;display:flex;position:fixed;bottom:20px;right:20px;box-shadow:0 4px 12px #00000026}.chat-toggle-btn:hover{transform:scale(1.05);box-shadow:0 6px 16px #0003}.chat-toggle-btn:active{transform:scale(.95)}.chat-notification-badge{color:#fff;border:2px solid var(--bg);background:#f44;border-radius:10px;justify-content:center;align-items:center;min-width:20px;height:20px;padding:0 6px;font-size:11px;font-weight:700;display:flex;position:absolute;top:-4px;right:-4px}.chat-panel.floating{border:2px solid var(--fg);background:var(--bg);z-index:1000;border-radius:12px;flex-direction:column;width:320px;max-width:calc(100vw - 40px);max-height:500px;display:flex;position:fixed;bottom:90px;right:20px;box-shadow:0 8px 24px #00000026}.chat-header{border-bottom:2px solid var(--fg);background:var(--fg);color:var(--bg);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.chat-header h3{margin:0;font-size:14px;font-weight:700}.chat-close-btn{color:var(--bg);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:18px}.chat-close-btn:hover{background:#ffffff1a}.chat-messages{flex-direction:column;flex:1;gap:8px;padding:12px;display:flex;overflow-y:auto}.chat-empty{color:var(--fg-secondary);text-align:center;margin-top:20px;font-size:13px}.chat-msg{flex-direction:column;gap:2px;max-width:88%;display:flex}.chat-msg.own{align-self:flex-end;align-items:flex-end}.chat-msg.partner{align-self:flex-start;align-items:flex-start}.msg-sender{color:var(--fg-secondary);margin-bottom:2px;font-size:11px;font-weight:600}.msg-text{word-break:break-word;border-radius:16px;padding:8px 12px;font-size:14px;line-height:1.4}.own .msg-text{background:var(--fg);color:var(--bg);border-bottom-right-radius:4px}.partner .msg-text{color:var(--fg);background:#f5f5f5;border-bottom-left-radius:4px}.chat-input-area{border-top:2px solid var(--fg);gap:6px;padding:10px;display:flex}.chat-input{flex:1}.chat-panel:not(.floating){border-left:2px solid var(--fg);background:var(--bg);flex-direction:column;flex-shrink:0;width:260px;display:flex}.matching-screen{flex-direction:column;justify-content:center;align-items:center;gap:24px;min-height:100%;display:flex}.matching-dots{gap:10px;display:flex}.matching-dot{background:var(--fg);border-radius:50%;width:12px;height:12px;animation:1.2s ease-in-out infinite dot-bounce}.matching-dot:nth-child(2){animation-delay:.2s}.matching-dot:nth-child(3){animation-delay:.4s}@keyframes dot-bounce{0%,80%,to{opacity:.4;transform:scale(.7)}40%{opacity:1;transform:scale(1)}}.matching-text{color:var(--fg-secondary);font-size:15px;font-weight:600}.disconnected-screen{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:16px;min-height:100%;padding:24px;display:flex}.disconnected-icon{width:56px;height:56px}.disconnected-title{font-size:22px;font-weight:800}.disconnected-msg{color:var(--fg-secondary);max-width:300px;font-size:14px}.disconnected-actions{gap:10px;margin-top:8px;display:flex}.own-code-card{border:2px solid var(--fg);border-radius:var(--radius);text-align:center;width:100%;max-width:320px;padding:22px}.code-label{text-transform:uppercase;letter-spacing:.5px;color:var(--fg-secondary);margin-bottom:10px;font-size:11px;font-weight:700}.code-display{justify-content:center;align-items:center;gap:14px;display:flex}.code{letter-spacing:5px;font-family:monospace;font-size:34px;font-weight:900}.code-hint{color:var(--fg-secondary);margin-top:10px;font-size:12px}.add-friend-form{flex-direction:column;gap:8px;width:100%;max-width:320px;display:flex}.friends-actions{gap:8px;display:flex}.friends-list{flex-direction:column;gap:8px;width:100%;max-width:420px;display:flex}.friend-item{border:2px solid var(--fg);border-radius:var(--radius);justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.friend-info{flex-direction:column;gap:2px;display:flex}.friend-name{font-size:14px;font-weight:700}.friend-code{color:var(--fg-secondary);letter-spacing:1px;font-family:monospace;font-size:12px}.friend-actions{gap:6px;display:flex}.lobby-header{align-items:center;gap:12px;width:100%;max-width:420px;display:flex}.lobby-header h2{font-size:20px;font-weight:900}.error{color:#c00;font-size:12px;font-weight:600}.empty-state{color:var(--fg-secondary);text-align:center;padding:20px;font-size:13px}