:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#e8e7ee;background:#0b0d12;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}html,body,#root{width:100%;min-width:320px;height:100%;margin:0}body{overflow:hidden}button,input{font:inherit}button:hover{filter:brightness(1.06)}button:active{transform:translateY(1px)}@keyframes spin{to{transform:rotate(360deg)}}@keyframes typingPulse{0%,to{opacity:.15}50%{opacity:1}}.typing-dot{animation:typingPulse .96s ease-in-out infinite}:root{--bg: #0f172a;--panel: #111827;--border: #1f2933;--text: #e5e7eb;--sub: #9ca3af;--accent: #3b82f6;--me: #2563eb;--you: #1f2937}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont}.app{display:flex;height:100vh}.sidebar{width:280px;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column}.sidebar-header{padding:16px;font-weight:600;border-bottom:1px solid var(--border)}.dm-list{flex:1;overflow-y:auto}.dm-item{padding:12px 16px;cursor:pointer;border-bottom:1px solid var(--border)}.dm-item:hover{background:#1f2937}.dm-item.active{background:#1e3a8a}.dm-user{font-size:14px}.dm-last{font-size:12px;color:var(--sub);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.new-dm{margin:12px;padding:10px;border-radius:8px;border:none;background:var(--accent);color:#fff;cursor:pointer}.chat{flex:1;display:flex;flex-direction:column}.chat-header{padding:16px;border-bottom:1px solid var(--border);font-weight:500}.chat-body{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.bubble{max-width:60%;padding:10px 12px;border-radius:12px;font-size:14px}.bubble.me{align-self:flex-end;background:var(--me)}.bubble.you{align-self:flex-start;background:var(--you)}.time{font-size:10px;color:var(--sub);margin-top:4px;text-align:right}.chat-input{display:flex;padding:12px;border-top:1px solid var(--border);gap:8px}.chat-input input{flex:1;background:#020617;border:1px solid var(--border);border-radius:8px;padding:10px;color:var(--text)}.chat-input button{background:var(--accent);border:none;border-radius:8px;padding:0 16px;color:#fff;cursor:pointer}.empty{margin:auto;color:var(--sub)}.my-id{font-size:11px;color:var(--sub);margin-top:4px}.nickname-modal{position:fixed;inset:0;background:#020617d9;display:flex;align-items:center;justify-content:center;z-index:999}.nickname-box{background:var(--panel);padding:24px;border-radius:12px;width:280px;text-align:center;border:1px solid var(--border)}.nickname-box h2{margin:0 0 12px;font-size:16px}.nickname-box input{width:100%;padding:10px;border-radius:8px;border:1px solid var(--border);background:#020617;color:var(--text);margin-bottom:12px}.nickname-box button{width:100%;padding:10px;border-radius:8px;border:none;background:var(--accent);color:#fff;cursor:pointer}.unread-badge{background:#ff3b30;color:#fff;border-radius:12px;padding:2px 6px;font-size:12px;margin-left:6px}