@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";
:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-tertiary:#1a1a2e;--bg-card:#16162a;--bg-hover:#1e1e3a;--bg-input:#1a1a30;--border:#2a2a45;--border-focus:#6366f1;--text-primary:#f0f0f5;--text-secondary:#9898b0;--text-muted:#5a5a78;--accent:#6366f1;--accent-hover:#818cf8;--accent-soft:#6366f11f;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--platform-tg:#26a5e4;--platform-fb:#1877f2;--platform-ig:#e1306c;--platform-zalo:#0068ff;--radius-sm:6px;--radius:10px;--radius-lg:16px;--radius-full:9999px;--shadow:0 4px 24px #0000004d;--shadow-lg:0 8px 40px #00000080;--sidebar-w:260px;--header-h:60px;--transition:.2s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg-primary);height:100%;color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;font-size:14px}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,textarea{outline:none;font-family:inherit}.btn{border-radius:var(--radius);transition:all var(--transition);white-space:nowrap;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:600;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 16px #6366f14d}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--accent)}.btn-danger{color:var(--danger);border:1px solid var(--danger);background:0 0}.btn-danger:hover{background:#ef44441a}.btn-sm{padding:6px 14px;font-size:13px}.btn:disabled{opacity:.5;pointer-events:none}.input{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);width:100%;color:var(--text-primary);transition:border-color var(--transition);padding:10px 14px;font-size:14px}.input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--accent-soft)}.input::placeholder{color:var(--text-muted)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:border-color var(--transition);padding:24px}.card:hover{border-color:var(--accent)}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 24px}.stat-card .stat-label{color:var(--text-secondary);margin-bottom:8px;font-size:13px}.stat-card .stat-value{font-size:28px;font-weight:700}.badge{border-radius:var(--radius-full);align-items:center;gap:4px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-flex}.badge-active{color:var(--success);background:#22c55e26}.badge-error{color:var(--danger);background:#ef444426}.badge-tg{color:var(--platform-tg);background:#26a5e426}.badge-fb{color:var(--platform-fb);background:#1877f226}.badge-ig{color:var(--platform-ig);background:#e1306c26}.badge-zalo{color:var(--platform-zalo);background:#0068ff26}.table-wrap{overflow-x:auto}.table{border-collapse:collapse;width:100%}.table th{text-align:left;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border);padding:12px 16px;font-size:12px;font-weight:600}.table td{border-bottom:1px solid var(--border);vertical-align:middle;padding:14px 16px}.table tr:hover td{background:var(--bg-hover)}.auth-page{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.auth-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:420px;padding:40px}.auth-card h1{margin-bottom:8px;font-size:24px;font-weight:700}.auth-card .subtitle{color:var(--text-secondary);margin-bottom:32px}.auth-card .form-group{margin-bottom:20px}.auth-card label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:500;display:block}.auth-card .error{color:var(--danger);margin-top:12px;font-size:13px}.auth-card .footer{text-align:center;color:var(--text-secondary);margin-top:24px;font-size:13px}.app-layout{height:100vh;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-w);background:var(--bg-secondary);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;display:flex}.sidebar .logo{color:var(--accent);border-bottom:1px solid var(--border);padding:20px 24px;font-size:20px;font-weight:700}.sidebar nav{flex:1;padding:12px}.sidebar .nav-item{border-radius:var(--radius);color:var(--text-secondary);transition:all var(--transition);align-items:center;gap:12px;margin-bottom:2px;padding:10px 16px;font-weight:500;display:flex}.sidebar .nav-item:hover,.sidebar .nav-item.active{background:var(--accent-soft);color:var(--text-primary)}.sidebar .nav-item.active{color:var(--accent)}.sidebar .user-section{border-top:1px solid var(--border);padding:16px}.sidebar .user-email{color:var(--text-secondary);text-overflow:ellipsis;margin-bottom:8px;font-size:13px;overflow:hidden}.main-content{flex:1;padding:32px;overflow-y:auto}.main-content h2{margin-bottom:24px;font-size:22px;font-weight:700}.platform-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;display:grid}.platform-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;transition:all var(--transition);padding:28px}.platform-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}.platform-card .platform-icon{margin-bottom:16px;font-size:40px}.platform-card h3{margin-bottom:8px;font-size:16px}.platform-card p{color:var(--text-secondary);margin-bottom:20px;font-size:13px}.conv-layout{height:calc(100vh - var(--header-h));margin:-32px;display:flex}.conv-list{border-right:1px solid var(--border);flex-shrink:0;width:360px;overflow-y:auto}.conv-list-header{border-bottom:1px solid var(--border);padding:20px;font-size:16px;font-weight:700}.conv-item{cursor:pointer;border-bottom:1px solid var(--border);transition:background var(--transition);align-items:center;gap:12px;padding:14px 20px;display:flex}.conv-item:hover,.conv-item.active{background:var(--bg-hover)}.conv-item .avatar{border-radius:var(--radius-full);background:var(--bg-tertiary);width:40px;height:40px;color:var(--accent);flex-shrink:0;justify-content:center;align-items:center;font-size:16px;font-weight:700;display:flex}.conv-item .info{flex:1;min-width:0}.conv-item .name{text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:600;overflow:hidden}.conv-item .preview{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.conv-item .time{color:var(--text-muted);flex-shrink:0;font-size:12px}.chat-area{flex-direction:column;flex:1;display:flex}.chat-header{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:16px 24px;display:flex}.chat-header .name{font-weight:600}.chat-messages{flex-direction:column;flex:1;gap:12px;padding:24px;display:flex;overflow-y:auto}.msg-bubble{border-radius:var(--radius-lg);max-width:70%;padding:10px 16px;font-size:14px;line-height:1.5;animation:.2s fadeIn}.msg-bubble.in{background:var(--bg-tertiary);border-bottom-left-radius:4px;align-self:flex-start}.msg-bubble.out{background:var(--accent);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.msg-time{color:var(--text-muted);margin-top:4px;font-size:11px}.msg-bubble.out .msg-time{color:#fff9}.chat-input-wrap{border-top:1px solid var(--border);gap:12px;padding:16px 24px;display:flex}.chat-input-wrap input{flex:1}.chat-empty{color:var(--text-muted);flex:1;justify-content:center;align-items:center;font-size:15px;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.sidebar{display:none}.conv-list{width:100%}.chat-area{display:none}.platform-grid{grid-template-columns:1fr}}