:root{--bg:#f5f5f5;--bg-card:#fff;--bg-sidebar:#1e293b;--text:#334155;--text-muted:#94a3b8;--text-sidebar:#e2e8f0;--primary:#2563eb;--primary-hover:#1d4ed8;--danger:#dc2626;--success:#16a34a;--border:#e2e8f0;--radius:8px;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,sans-serif;font-size:14px}*{box-sizing:border-box;margin:0;padding:0}.layout{min-height:100vh;display:flex}.sidebar{background:var(--bg-sidebar);width:220px;color:var(--text-sidebar);flex-direction:column;padding:20px 0;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar h2{color:#fff;border-bottom:1px solid #334155;margin-bottom:10px;padding:0 20px 20px;font-size:18px}.sidebar nav{flex-direction:column;flex:1;display:flex}.nav-link{color:var(--text-sidebar);padding:10px 20px;text-decoration:none;transition:background .15s;display:block}.nav-link:hover{background:#ffffff1a}.nav-link.active{border-left:3px solid var(--primary);background:#ffffff26;font-weight:600}.logout-btn{color:var(--text-sidebar);border-radius:var(--radius);cursor:pointer;background:0 0;border:1px solid #475569;margin:10px 20px;padding:8px}.logout-btn:hover{background:#ffffff1a}.content{flex:1;max-width:1200px;margin-left:220px;padding:24px}.login-container{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-form{background:var(--bg-card);border-radius:var(--radius);width:360px;padding:40px;box-shadow:0 4px 12px #0000001a}.login-form h1{text-align:center;margin-bottom:24px;font-size:20px}.login-form input{border:1px solid var(--border);border-radius:var(--radius);width:100%;margin-bottom:12px;padding:10px 12px;font-size:14px;display:block}.login-form button{background:var(--primary);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;width:100%;padding:10px;font-size:14px}.login-form button:hover{background:var(--primary-hover)}.login-form button:disabled{opacity:.6;cursor:not-allowed}h1{margin-bottom:20px;font-size:24px;font-weight:600}h2{margin:20px 0 12px;font-size:18px;font-weight:600}.error{color:var(--danger);border-radius:var(--radius);background:#fef2f2;border:1px solid #fecaca;margin-bottom:16px;padding:10px 14px}.success{color:var(--success);border-radius:var(--radius);background:#f0fdf4;border:1px solid #bbf7d0;margin-bottom:16px;padding:10px 14px}.loading{text-align:center;color:var(--text-muted);padding:40px}.empty{text-align:center;color:var(--text-muted);padding:20px}button{background:var(--primary);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;padding:8px 16px;font-size:13px}button:hover{background:var(--primary-hover)}button:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{color:var(--text);border:1px solid var(--border);background:0 0}.btn-secondary:hover{background:var(--bg)}.cards{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.card{background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border);padding:20px}.card h3{text-transform:uppercase;color:var(--text-muted);margin-bottom:8px;font-size:13px;font-weight:500}.card-value{color:var(--text);font-size:28px;font-weight:700}.card-sub{color:var(--text-muted);margin-top:4px;font-size:12px}.card-list{font-size:13px;line-height:1.6}.content-page section{margin-bottom:32px}.content-tree{padding-left:0}.accordion{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-card);margin-bottom:4px}.accordion-header{width:100%;color:var(--text);text-align:left;background:0 0;border:none;padding:10px 14px;font-size:13px;font-weight:600}.accordion-header:hover{background:var(--bg)}.accordion-body{padding:0 14px 10px}.text-item{background:var(--bg);border-radius:var(--radius);margin:8px 0;padding:8px}.text-key{color:var(--text-muted);margin-bottom:4px;font-family:monospace;font-size:11px;display:block}.text-preview{cursor:pointer;white-space:pre-wrap;word-break:break-word;border-radius:4px;padding:4px;font-size:13px}.text-preview:hover{background:#2563eb0d}.text-item textarea{border:1px solid var(--border);resize:vertical;border-radius:4px;width:100%;padding:8px;font-family:inherit;font-size:13px}.text-actions{gap:8px;margin-top:8px;display:flex}.text-actions button{padding:6px 12px;font-size:12px}.buttons-table{border-collapse:collapse;background:var(--bg-card);border-radius:var(--radius);width:100%;overflow:hidden}.buttons-table th,.buttons-table td{text-align:left;border-bottom:1px solid var(--border);padding:8px 12px;font-size:13px}.buttons-table th{background:var(--bg);text-transform:uppercase;color:var(--text-muted);font-size:12px;font-weight:600}.mono{font-family:monospace;font-size:12px}.toggle{cursor:pointer;align-items:center;gap:8px;font-size:13px;display:flex}.toggle input{cursor:pointer}.support-layout{gap:16px;height:calc(100vh - 120px);display:flex}.chat-list{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);width:280px;overflow-y:auto}.chat-list h3{border-bottom:1px solid var(--border);padding:12px 16px;font-size:14px}.chat-item{border-bottom:1px solid var(--border);cursor:pointer;padding:10px 16px}.chat-item:hover{background:var(--bg)}.chat-item.selected{border-left:3px solid var(--primary);background:#2563eb14}.chat-user{font-size:13px;font-weight:600}.chat-meta{color:var(--text-muted);margin-top:2px;font-size:11px}.chat-window{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;flex:1;display:flex}.messages{flex:1;padding:16px;overflow-y:auto}.message{border-radius:var(--radius);word-break:break-word;max-width:70%;margin-bottom:8px;padding:8px 12px;font-size:13px}.message.incoming{background:var(--bg);align-self:flex-start}.message.outgoing{background:#2563eb1a;margin-left:auto}.message-time{color:var(--text-muted);margin-top:4px;font-size:10px;display:block}.reply-bar{border-top:1px solid var(--border);gap:8px;padding:12px;display:flex}.reply-bar textarea{border:1px solid var(--border);border-radius:var(--radius);resize:none;flex:1;padding:8px;font-family:inherit;font-size:13px}.reply-bar button{align-self:flex-end}.broadcast-form{background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border);margin-bottom:24px;padding:20px}.broadcast-form textarea{border:1px solid var(--border);border-radius:var(--radius);resize:vertical;width:100%;margin-bottom:12px;padding:10px;font-family:inherit;font-size:13px}.filters{gap:12px;margin-bottom:12px;display:flex}.filters select,.filters input{border:1px solid var(--border);border-radius:var(--radius);flex:1;padding:8px 10px;font-size:13px}.broadcast-table{border-collapse:collapse;background:var(--bg-card);border-radius:var(--radius);width:100%;overflow:hidden}.broadcast-table th,.broadcast-table td{text-align:left;border-bottom:1px solid var(--border);padding:8px 12px;font-size:13px}.broadcast-table th{background:var(--bg);text-transform:uppercase;color:var(--text-muted);font-size:12px;font-weight:600}.text-cell{text-overflow:ellipsis;white-space:nowrap;max-width:300px;overflow:hidden}.status-badge{border-radius:12px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.status-badge.pending{color:#92400e;background:#fef3c7}.status-badge.sent{color:#065f46;background:#d1fae5}.btn-send{padding:4px 12px;font-size:12px}