*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f0f2f5;--surface: #ffffff;--primary: #6366f1;--primary-dark: #4f46e5;--text: #1e293b;--muted: #64748b;--border: #e2e8f0;--bubble: #ffffff;--bubble-shadow: 0 1px 2px rgba(0,0,0,.08);--radius: 12px;--top-bar-h: 56px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:15px;color:var(--text)}body{background:var(--bg);overflow:hidden;height:100dvh}#root{height:100dvh;display:flex;flex-direction:column}.app-shell{display:flex;flex-direction:column;height:100dvh;overflow:hidden;background:var(--bg);max-width:480px;margin:0 auto;width:100%}.top-bar{height:var(--top-bar-h);background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 12px;gap:10px;flex-shrink:0;position:relative}.top-bar-title{font-size:17px;font-weight:700;flex:1}.top-bar-channel{display:flex;align-items:center;gap:10px;flex:1}.top-bar-avatar{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}.top-bar-sub{font-size:11px;color:var(--muted);margin-top:1px}.top-bar-actions{display:flex;gap:4px}.back-btn{background:none;border:none;font-size:28px;color:var(--primary);cursor:pointer;padding:0 4px;line-height:1;margin-right:4px}.icon-btn{background:none;border:none;font-size:20px;color:var(--muted);cursor:pointer;width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center}.icon-btn:hover{background:var(--bg)}.logout-btn{font-size:13px;font-weight:600;color:var(--muted);width:auto;padding:0 10px}.channel-list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.channel-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border);cursor:pointer;transition:background .1s}.channel-item:active{background:#f8fafc}.channel-avatar{width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}.channel-avatar.sm{width:36px;height:36px;border-radius:10px;font-size:18px}.channel-info{flex:1;min-width:0}.channel-row1{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:3px}.channel-name{font-size:15px;font-weight:600;color:var(--text)}.channel-time{font-size:11px;color:var(--muted);flex-shrink:0}.mute-btn{background:none;border:1.5px solid var(--border);border-radius:8px;font-size:11px;font-weight:600;color:var(--muted);cursor:pointer;padding:3px 8px;flex-shrink:0}.mute-btn.muted{color:#94a3b8;border-color:#e2e8f0;text-decoration:line-through}.channel-preview{font-size:13px;color:var(--muted);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.message-list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:12px 12px 20px;display:flex;flex-direction:column;gap:8px}.date-divider{display:flex;align-items:center;justify-content:center;margin:8px 0 4px}.date-divider span{background:#64748b26;color:var(--muted);font-size:11px;padding:3px 12px;border-radius:20px}.message-bubble{background:var(--bubble);border-radius:var(--radius);padding:10px 14px;box-shadow:var(--bubble-shadow);max-width:92%;align-self:flex-start}.bubble-header{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:4px}.bubble-title{font-size:13px;font-weight:700;color:var(--primary-dark)}.bubble-time{font-size:10px;color:var(--muted);flex-shrink:0}.bubble-body{font-size:14px;color:var(--text);line-height:1.55;white-space:pre-wrap}.bubble-data{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}.bubble-tag{font-size:11px;background:#f1f5f9;color:var(--muted);padding:2px 8px;border-radius:20px;font-family:monospace}.login-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#6366f1,#818cf8);padding:24px}.login-card{background:#fff;border-radius:20px;padding:36px 28px;width:100%;max-width:360px;box-shadow:0 20px 60px #00000026}.login-logo{text-align:center;margin-bottom:28px}.login-icon{font-size:48px;margin-bottom:10px}.login-logo h1{font-size:22px;font-weight:800;color:var(--text)}.login-logo p{font-size:13px;color:var(--muted);margin-top:4px}.login-error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;font-size:13px;padding:10px 14px;border-radius:10px;margin-bottom:16px}.login-btn{width:100%;background:var(--primary);color:#fff;border:none;border-radius:12px;padding:14px;font-size:15px;font-weight:700;cursor:pointer;margin-top:8px;transition:background .2s}.login-btn:hover:not(:disabled){background:var(--primary-dark)}.login-btn:disabled{opacity:.55;cursor:not-allowed}.field{margin-bottom:14px}.field label{font-size:12px;font-weight:600;color:var(--muted);display:block;margin-bottom:5px}.field input,.field textarea,.field select{width:100%;border:1.5px solid var(--border);border-radius:10px;padding:10px 12px;font-size:14px;color:var(--text);background:var(--surface);outline:none;transition:border-color .2s}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary)}.field textarea{resize:vertical;min-height:80px}.field-error{font-size:12px;color:#ef4444;margin-top:8px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:flex-end;justify-content:center;z-index:1000;padding:0}.modal{background:var(--surface);border-radius:20px 20px 0 0;padding:24px 20px 32px;width:100%;max-width:480px;max-height:85dvh;overflow-y:auto}.modal h3{font-size:16px;font-weight:700;margin-bottom:16px}.modal p{font-size:14px;color:var(--text);line-height:1.6;margin-bottom:8px}.modal-footer{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}.btn-primary{background:var(--primary);color:#fff;border:none;border-radius:10px;padding:10px 20px;font-size:14px;font-weight:600;cursor:pointer}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-outline{background:none;color:var(--text);border:1.5px solid var(--border);border-radius:10px;padding:10px 18px;font-size:14px;font-weight:600;cursor:pointer}.btn-danger{background:#ef4444;color:#fff;border:none;border-radius:10px;padding:10px 18px;font-size:14px;font-weight:600;cursor:pointer}.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}.btn-sm.btn-outline{background:none;border:1.5px solid var(--border);color:var(--text);cursor:pointer}.btn-sm.btn-danger{background:#ef4444;color:#fff;border:none;cursor:pointer}.admin-menu{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:10px}.admin-menu-item{background:var(--surface);border-radius:var(--radius);padding:16px;display:flex;align-items:center;gap:14px;cursor:pointer;border:1.5px solid var(--border)}.admin-menu-item:active{background:#f8fafc}.admin-menu-icon{font-size:28px;flex-shrink:0}.admin-menu-title{font-size:15px;font-weight:700}.admin-menu-sub{font-size:12px;color:var(--muted);margin-top:2px}.admin-menu-arrow{font-size:22px;color:var(--muted);margin-left:auto}.admin-list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.admin-row{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border)}.admin-row-info{flex:1;min-width:0}.admin-row-name{font-size:14px;font-weight:600}.admin-row-sub{font-size:12px;color:var(--muted);margin-top:2px}.admin-row-actions{display:flex;gap:6px;flex-shrink:0}.user-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.channel-checklist{display:flex;flex-direction:column;gap:8px;margin:8px 0 4px}.check-row{display:flex;align-items:center;gap:10px;cursor:pointer;padding:8px 12px;border-radius:10px;border:1.5px solid var(--border);font-size:14px}.check-row:has(input:checked){border-color:var(--primary);background:#eef2ff}.check-row input{width:16px;height:16px;accent-color:var(--primary)}.check-avatar{width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px}.pull-indicator{text-align:center;padding:12px;font-size:13px;color:var(--muted)}.hint{text-align:center;color:var(--muted);padding:32px 16px;font-size:14px}.hint.small{padding:8px 16px;font-size:12px}@media (min-width: 480px){body{background:#e8eaf0}.app-shell{box-shadow:0 0 40px #0000001f}}