*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:#f4f4f8;color:#1d1c1d;line-height:1.5}a{color:#1264a3;text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;padding:8px 16px;border:none;border-radius:4px;font-size:14px}.layout{min-height:100vh;display:flex;flex-direction:column}.header{background:#4a154b;color:#fff;padding:12px 24px;display:flex;align-items:center;gap:24px}.header h1{font-size:20px;cursor:pointer}.search-form{flex:1;max-width:600px;display:flex;gap:8px}.search-form input{flex:1;padding:8px 12px;border:none;border-radius:4px;font-size:14px}.search-form button{background:#007a5a;color:#fff}.search-form button:hover{background:#005e47}.user-info{display:flex;align-items:center;gap:12px}.user-info button{background:#fff3;color:#fff}.main-content{flex:1;padding:24px;max-width:1200px;margin:0 auto;width:100%}.loading,.error,.empty-state{padding:40px;text-align:center;color:#616061}.error{color:#e01e5a}.back-link{margin-bottom:16px;display:inline-block}.login-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:16px}.login-container button{background:#4a154b;color:#fff;padding:12px 24px;font-size:16px}.channel-list h2{margin-bottom:16px}.channel-list section{margin-bottom:24px}.channel-list h3{font-size:14px;color:#616061;margin-bottom:8px}.channel-list ul{list-style:none;background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000001a}.channel-list li{border-bottom:1px solid #f4f4f8}.channel-list li:last-child{border-bottom:none}.channel-list li a{display:flex;align-items:center;padding:12px 16px;color:inherit}.channel-list li a:hover{background:#f4f4f8;text-decoration:none}.channel-icon{margin-right:8px;color:#616061}.archived-badge{margin-left:auto;font-size:12px;background:#f4f4f8;padding:2px 8px;border-radius:4px;color:#616061}.channel-header{margin-bottom:24px}.channel-header h2{display:flex;align-items:center;gap:8px}.channel-topic{color:#616061;margin-top:4px}.messages-list{background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000001a}.message-item{display:flex;padding:12px 16px;border-bottom:1px solid #f4f4f8}.message-item:last-child{border-bottom:none}.message-item.reply{padding-left:48px;background:#fafafa}.message-avatar{flex-shrink:0;margin-right:12px}.message-avatar img,.avatar-placeholder{width:36px;height:36px;border-radius:4px}.avatar-placeholder{background:#4a154b;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}.message-content{flex:1;min-width:0}.message-header{display:flex;align-items:baseline;gap:8px;margin-bottom:4px}.message-header .user-name{font-weight:700}.message-header .timestamp,.message-header .edited{font-size:12px;color:#616061}.message-text{word-wrap:break-word}.reactions{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}.reaction{background:#f4f4f8;padding:2px 8px;border-radius:12px;font-size:12px}.files{margin-top:8px}.file-attachment{display:flex;align-items:center;gap:8px;padding:8px;background:#f4f4f8;border-radius:4px;margin-bottom:4px}.file-thumb{max-width:100px;max-height:60px;border-radius:4px}.file-size{color:#616061;font-size:12px}.thread-link{display:inline-block;margin-top:8px;font-size:13px;color:#1264a3}.thread-link:hover{text-decoration:underline}.load-more{display:block;width:100%;padding:12px;background:#f4f4f8;border:none;font-size:14px;color:#1264a3}.load-more:hover:not(:disabled){background:#e8e8e8}.load-more:disabled{color:#616061}.thread-view .thread-header{margin-bottom:24px}.thread-content{background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000001a}.replies-divider{padding:12px 16px;border-bottom:1px solid #f4f4f8;color:#616061;font-size:13px}.search-header{margin-bottom:24px}.results-list{list-style:none;background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000001a}.search-result{padding:16px;border-bottom:1px solid #f4f4f8}.search-result:last-child{border-bottom:none}.result-header{display:flex;gap:12px;margin-bottom:8px;font-size:13px}.result-header .channel-name{color:#616061}.result-header .user-name{font-weight:500}.result-snippet{margin-bottom:8px}.result-snippet mark{background:#fff3cd;padding:0 2px}.result-actions{display:flex;gap:16px;font-size:13px}.formatted-message{white-space:pre-wrap}.slack-link{color:#1264a3;text-decoration:none}.slack-link:hover{text-decoration:underline}.code-block{background:#f8f8f8;border:1px solid #e1e1e1;border-radius:4px;padding:12px;margin:8px 0;overflow-x:auto;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:13px;line-height:1.4}.code-block code{background:none;padding:0;font-size:inherit}.inline-code{background:#f0f0f0;border:1px solid #e1e1e1;border-radius:3px;padding:1px 4px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:12px;color:#e01e5a}.slack-blockquote{border-left:4px solid #ddd;margin:8px 0;padding:4px 12px;color:#616061;background:#fafafa}.file-attachment{display:flex;align-items:center;gap:12px;padding:12px;background:#f8f8f8;border:1px solid #e1e1e1;border-radius:6px;margin-top:8px}.file-attachment .file-icon{width:40px;height:40px;background:#4a154b;border-radius:4px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px}.file-attachment .file-name{font-weight:500;color:#1264a3}.file-attachment .file-size{color:#616061;font-size:12px}.file-thumb{max-width:200px;max-height:150px;border-radius:4px;border:1px solid #e1e1e1}.file-thumb-link{display:inline-block;cursor:pointer}.file-thumb-link:hover .file-thumb{opacity:.8;border-color:#1264a3}.file-info{display:flex;flex-direction:column;gap:2px}a.file-name{color:#1264a3;text-decoration:none}a.file-name:hover{text-decoration:underline}.file-local-badge{margin-left:8px;font-size:12px;cursor:help}.reaction{display:inline-flex;align-items:center;gap:4px;background:#f0f0f0;border:1px solid #e1e1e1;padding:4px 8px;border-radius:16px;font-size:13px}.reaction:hover{background:#e8e8e8}