:root{color-scheme:light;--bg: #ffffff;--bg-sidebar: #f7f7f8;--bg-chat: #b2c7d9;--fg: #191919;--fg-muted: #7c7c80;--accent: #fee500;--accent-fg: #3c1e1e;--border: #e5e5e8;--bubble-mine: #fee500;--bubble-other: #ffffff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Malgun Gothic,Apple SD Gothic Neo,sans-serif}.shell{max-width:360px;margin:80px auto;padding:24px;text-align:center}.brand-title{color:#eab308;font-size:26px}.mascot{width:160px;height:160px;margin:0 auto 12px;display:block;filter:drop-shadow(0 8px 16px rgba(0,0,0,.12))}.auth-form{display:flex;flex-direction:column;gap:12px;margin:24px 0}input{padding:11px 14px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--fg);font-size:14px}input::placeholder{color:#b3b3b6}button{padding:11px 14px;border-radius:10px;border:none;background:var(--accent);color:var(--accent-fg);font-weight:700;cursor:pointer}button.link{background:transparent;color:#7c7c80;font-weight:400;font-size:13px}.chat-shell{display:flex;height:100vh}.sidebar{width:260px;min-width:200px;flex-shrink:0;background:var(--bg-sidebar);border-right:1px solid var(--border);padding:16px 12px;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:4px}.sidebar .me,.section-title,.channel-list li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar .me{display:flex;align-items:center;gap:8px;font-weight:700;margin-bottom:16px;color:#191919}.me-mascot{width:28px;height:28px;object-fit:contain}.logout-btn{margin-left:auto;background:transparent;color:var(--fg-muted);padding:4px 6px;font-size:14px}.logout-btn:hover{color:#191919}.name-divider{width:1px;height:12px;background:#d0d0d3}.name-badge{font-size:13px;font-weight:700;color:#191919}.name-badge.brand{color:#eab308}.section-title{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--fg-muted);margin:14px 0 6px}.channel-list{list-style:none;margin:0;padding:0}.channel-list li{padding:8px 10px;border-radius:10px;cursor:pointer;font-size:14px;color:#191919}.channel-list li:hover{background:#ececee}.channel-list li.active{background:var(--accent);color:var(--accent-fg);font-weight:600}.new-group{display:flex;flex-direction:column;gap:6px;margin:6px 0;padding:10px;background:#fff;border:1px solid var(--border);border-radius:10px}.member-picker{display:flex;flex-direction:column;gap:2px;max-height:120px;overflow-y:auto;font-size:13px}.message-pane{flex:1;display:flex;flex-direction:column;background:var(--bg-chat)}.message-pane header{display:flex;align-items:center;padding:14px 20px;background:#fff;border-bottom:1px solid var(--border);font-weight:700}.messages{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:16px}.message{display:flex;flex-direction:column;gap:4px;max-width:68%}.message.mine{align-self:flex-end;align-items:flex-end}.message.theirs{align-self:flex-start;align-items:flex-start}.message .author{font-weight:700;font-size:12.5px;color:#3a3a3d;margin-bottom:3px}.bubble-row{display:flex;align-items:flex-end;gap:6px}.message.theirs .bubble-row{flex-direction:row-reverse}.bubble-meta{display:flex;flex-direction:column;align-items:center;gap:2px;flex-shrink:0;white-space:nowrap}.unread-count{font-size:10px;font-weight:700;color:#f5a623}.msg-time{font-size:10px;color:var(--fg-muted)}.back-btn{display:none;background:transparent;color:#191919;padding:2px 8px 2px 0;font-size:20px;font-weight:700;margin-right:4px}.message .body{white-space:pre-wrap;padding:9px 13px;border-radius:16px;font-size:14.5px;line-height:1.4;box-shadow:0 1px 1px #0000000f}.bubble-wrap{position:relative}.paw-tail{position:absolute;bottom:4px;width:8px;height:8px;opacity:.35}.message.mine .body{background:var(--bubble-mine);color:var(--accent-fg);border-bottom-right-radius:4px;padding-left:18px}.message.mine .paw-tail{left:5px}.message.theirs .body{background:var(--bubble-other);color:#191919;border-bottom-left-radius:4px;padding-right:18px}.message.theirs .paw-tail{right:4px}.attachment-image{display:block;max-width:220px;max-height:220px;border-radius:14px;margin-top:4px}.attachment-file{display:inline-block;margin-top:4px;padding:8px 12px;background:#fff;border-radius:12px;color:#3c1e1e;text-decoration:none;font-size:13px;box-shadow:0 1px 1px #0000000f}.attach-btn{background:#ececee;padding:10px 12px}.search-form input{width:100%}.search-result{display:flex;flex-direction:column;gap:2px;cursor:pointer;padding:8px 10px;border-radius:10px}.search-result:hover{background:#ececee}.search-channel{font-size:12px;color:var(--fg-muted)}.composer{display:flex;gap:8px;padding:12px 20px;background:#fff;border-top:1px solid var(--border)}.composer input{flex:1}.empty-state{margin:auto;color:var(--fg-muted);text-align:center}.empty-mascot{width:120px;height:120px;object-fit:contain;opacity:.85;margin-bottom:8px}@media (max-width: 768px){.shell{margin:40px auto}.mascot{width:120px;height:120px}.chat-shell{position:relative;overflow:hidden}.sidebar{width:100%;min-width:0;border-right:none}.message-pane{position:absolute;top:0;right:0;bottom:0;left:0;transform:translate(100%);transition:transform .2s ease}.chat-shell.chat-open .sidebar{display:none}.chat-shell.chat-open .message-pane{position:static;transform:none}.back-btn{display:inline-block}.message{max-width:82%}}