*{box-sizing:border-box;margin:0;padding:0}:root{--bg-dark: #1a1a2e;--bg-medium: #16213e;--bg-light: #0f3460;--accent: #f97316;--accent-hover: #fb923c;--text-primary: #eee;--text-secondary: #aaa;--border: #333;--success: #4ade80;--warning: #fbbf24;--error: #ef4444;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: .75rem;--spacing-lg: 1rem;--spacing-xl: 1.5rem;--spacing-2xl: 2rem}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-dark);color:var(--text-primary);min-height:100vh}.login-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,var(--bg-dark) 0%,var(--bg-medium) 100%)}.login-screen .footer{position:absolute;bottom:0;left:0;right:0;padding:1rem;width:100%}.login-box{background:var(--bg-medium);padding:var(--spacing-2xl);border-radius:12px;text-align:center;box-shadow:0 8px 32px #0000004d}.login-box h1{font-size:2rem;margin-bottom:.5rem;color:var(--accent)}.login-box p{color:var(--text-secondary);margin-bottom:1.5rem}.login-box form{display:flex;flex-direction:column;gap:1rem}.login-box input{padding:var(--spacing-md) var(--spacing-lg);border:1px solid var(--border);border-radius:8px;background:var(--bg-dark);color:var(--text-primary);font-size:1rem;width:100%}.login-box button{padding:var(--spacing-md) var(--spacing-lg);border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:1rem;cursor:pointer;transition:background .2s}.login-box button:hover{background:var(--accent-hover)}.identity-section{text-align:left;padding:var(--spacing-md);background:var(--bg-dark);border-radius:8px;margin-top:var(--spacing-sm)}.identity-section label{display:block;font-size:.75rem;color:var(--text-secondary);margin-bottom:var(--spacing-sm);text-transform:uppercase;letter-spacing:.5px}.identity-display{display:flex;align-items:center;gap:var(--spacing-sm)}.identity-display code{font-size:.7rem;background:var(--bg-light);padding:.25rem .5rem;border-radius:4px;flex:1;word-break:break-all}.identity-note{font-size:.8rem;color:var(--text-secondary);font-style:italic}.identity-hint{font-size:.75rem;color:var(--warning);margin-bottom:var(--spacing-sm);line-height:1.4}.remember-me{display:flex;align-items:center;justify-content:center;font-size:.85rem;color:var(--text-secondary);margin-top:var(--spacing-md);cursor:pointer}.remember-me input{width:18px;height:18px;margin-right:var(--spacing-md);cursor:pointer;accent-color:var(--accent);vertical-align:middle}.identity-section .tooltip{display:inline-block;width:16px;height:16px;line-height:16px;text-align:center;background:var(--bg-light);border-radius:50%;font-size:.7rem;margin-left:var(--spacing-xs);cursor:help;color:var(--text-secondary)}.identity-section .tooltip:hover{background:var(--accent);color:#fff}.system-id-input{width:100%;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border);border-radius:6px;background:var(--bg-dark);color:var(--text-primary);font-size:.85rem;font-family:monospace}.system-id-input::placeholder{font-size:.75rem;font-family:inherit}.skill-modal{max-width:800px;max-height:80vh;display:flex;flex-direction:column}.skill-content{flex:1;overflow-y:auto;background:var(--bg-dark);border-radius:8px;padding:var(--spacing-lg);margin:var(--spacing-lg) 0}.skill-content pre{white-space:pre-wrap;word-wrap:break-word;font-size:.8rem;line-height:1.5}.skill-actions{display:flex;gap:var(--spacing-md);justify-content:flex-end}.skill-actions a{padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-light);border:1px solid var(--border);border-radius:6px;color:var(--text-primary);text-decoration:none;font-size:.85rem;cursor:pointer}.skill-actions a:hover{background:var(--accent)}.app{display:flex;flex-direction:column;height:100vh}.footer{padding:.75rem;text-align:center;background:var(--bg-medium);border-top:1px solid var(--border);color:var(--text-secondary);font-size:.85rem}.footer strong{color:var(--accent)}.footer a{color:inherit;text-decoration:none}.footer a:hover{text-decoration:underline}.header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg) var(--spacing-xl);background:var(--bg-medium);border-bottom:1px solid var(--border)}.header-left{display:flex;align-items:center;gap:var(--spacing-lg)}.header-left h1{color:var(--accent);font-size:1.5rem}.btn-back{padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);cursor:pointer;font-size:.85rem}.btn-back:hover{background:var(--bg-light);color:var(--text-primary)}.btn-logout{padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:1px solid 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h2{font-size:1.25rem}.channel-stats{display:flex;gap:1.5rem;font-size:.85rem;color:var(--text-secondary)}.messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.75rem}.empty-messages{color:var(--text-secondary);text-align:center;margin-top:2rem}.message{background:var(--bg-medium);padding:.75rem 1rem;border-radius:8px}.message-header{display:flex;justify-content:space-between;margin-bottom:.25rem}.sender{font-weight:600;color:var(--accent)}.time{font-size:.8rem;color:var(--text-secondary)}.message-content{line-height:1.5}.message-form{display:flex;gap:.5rem;padding:1rem 1.5rem;background:var(--bg-medium);border-top:1px solid var(--border)}.message-form input{flex:1;padding:.75rem 1rem;border:1px solid var(--border);border-radius:8px;background:var(--bg-dark);color:var(--text-primary);font-size:1rem}.message-form input:focus{outline:none;border-color:var(--accent)}.message-form button{padding:.75rem 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slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.channel-id{font-size:10px;color:var(--text-secondary);background:var(--bg-dark);padding:2px 4px;border-radius:3px;margin-left:4px;font-family:monospace}.channel-id-full{font-size:12px;color:var(--text-secondary);font-family:monospace;cursor:pointer;margin-left:8px}.channel-id-full:hover{color:var(--accent)}.members-list{max-height:200px;overflow-y:auto;margin-bottom:16px;border:1px solid var(--border);border-radius:4px}.member-item{display:flex;justify-content:space-between;padding:8px 12px;border-bottom:1px solid var(--border)}.member-item:last-child{border-bottom:none}.member-joined{font-size:12px;color:var(--text-secondary)}.invite-section,.join-section{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.invite-section h3,.join-section h3{font-size:14px;margin-bottom:8px}.invite-token{display:flex;gap:8px;margin-top:8px}.invite-token input{flex:1;padding:8px;background:var(--bg-dark);border:1px solid var(--border);color:var(--text-primary);font-family:monospace;font-size:12px}.join-form{display:flex;gap:8px}.join-form input{flex:1;padding:8px;background:var(--bg-dark);border:1px solid var(--border);color:var(--text-primary)}.btn-small{padding:4px 8px;font-size:12px;background:var(--bg-light);color:var(--text-primary);border:none;border-radius:4px;cursor:pointer}.btn-small:hover{background:var(--accent)}.btn-refresh{display:flex;align-items:center;gap:4px}.btn-refresh:disabled{opacity:.7;cursor:not-allowed}.socket-status{font-size:12px;display:flex;align-items:center;gap:4px}.socket-status.connected{color:var(--success)}.socket-status.disconnected{color:var(--error)}@media(max-width:768px){.header{padding:var(--spacing-sm) var(--spacing-md)}.header-left{gap:var(--spacing-sm)}.header-info{gap:var(--spacing-xs);flex-wrap:wrap;justify-content:flex-end}.header-info span,.header-info button{font-size:.75rem;padding:var(--spacing-xs) var(--spacing-sm)}.identity-badge{display:none}.sidebar{width:100%;position:absolute;z-index:100;height:calc(100vh - 60px)}.chat-area{width:100%}.login-box{padding:var(--spacing-lg);margin:var(--spacing-md)}.login-box input{font-size:.9rem}.footer{font-size:.75rem;padding:var(--spacing-sm)}}@media(max-width:480px){.header h1{font-size:1.1rem}.btn-back{padding:var(--spacing-xs);font-size:.75rem}.channel-list li{padding:var(--spacing-sm)}.chat-header{flex-direction:column;align-items:flex-start;gap:var(--spacing-sm)}.chat-messages{padding:var(--spacing-sm)}}