:root{--green: #25d366;--green-dark: #128c7e;--bg: #f0f2f5;--panel: #ffffff;--border: #e3e6ea;--text: #111b21;--muted: #667781;--danger: #e02e2e}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}.app{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--green-dark);color:#fff;padding:20px 0;flex-shrink:0}.brand{font-size:20px;font-weight:700;padding:0 22px 18px}.brand small{display:block;font-weight:400;font-size:11px;opacity:.8}.nav button{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;color:#fff;padding:13px 22px;font-size:15px;cursor:pointer;text-align:left}.nav button:hover{background:#ffffff1a}.nav button.active{background:#ffffff2e;font-weight:600}.main{flex:1;padding:26px 34px;max-width:1100px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}h1{font-size:22px;margin:0}h2{font-size:17px;margin:0 0 12px}.status-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:20px;font-size:13px;font-weight:600;background:#eee;color:#555}.dot{width:9px;height:9px;border-radius:50%;background:#999}.status-pill.ready{background:#dcf8e8;color:var(--green-dark)}.status-pill.ready .dot{background:var(--green)}.status-pill.qr,.status-pill.initializing,.status-pill.authenticated{background:#fff4d6;color:#9a6b00}.status-pill.qr .dot{background:#e0a800}.status-pill.disconnected .dot,.status-pill.auth_failure .dot{background:var(--danger)}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:18px}label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}input,textarea,select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit}textarea{min-height:90px;resize:vertical}button.btn{background:var(--green);color:#fff;border:0;border-radius:8px;padding:10px 18px;font-size:14px;font-weight:600;cursor:pointer}button.btn:hover{background:var(--green-dark)}button.btn:disabled{opacity:.5;cursor:not-allowed}button.btn.secondary{background:#e9edef;color:#111}button.btn.danger{background:var(--danger)}button.link{background:none;border:0;color:var(--danger);cursor:pointer;font-size:13px}button.link.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase}tr:last-child td{border-bottom:0}.badge{padding:3px 9px;border-radius:20px;font-size:11px;font-weight:600}.badge.sent{background:#dcf8e8;color:var(--green-dark)}.badge.pending{background:#fff4d6;color:#9a6b00}.badge.failed{background:#fde0e0;color:var(--danger)}.badge.received{background:#e7f0ff;color:#2563c9}.qr-box{text-align:center;padding:20px}.qr-box img{width:280px;height:280px;border:1px solid var(--border);border-radius:12px}.muted{color:var(--muted);font-size:13px}.row{display:flex;gap:14px;flex-wrap:wrap}.row>*{flex:1;min-width:180px}.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:14px;flex-wrap:wrap}.toolbar input{max-width:280px}.spacer{flex:1}.recipients-pick{max-height:240px;overflow:auto;border:1px solid var(--border);border-radius:8px;padding:6px 10px}.recipients-pick label{display:flex;align-items:center;gap:8px;margin:6px 0;color:var(--text)}.recipients-pick input{width:auto}.notice{background:#fff4d6;border:1px solid #f0d98a;color:#7a5a00;padding:12px 14px;border-radius:8px;font-size:13px;margin-bottom:16px}.empty{text-align:center;color:var(--muted);padding:30px}.hint{font-size:12px;color:var(--muted);margin-top:4px}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:34px 30px;width:360px;box-shadow:0 6px 30px #0000000f}.login-brand{font-size:24px;font-weight:700;color:var(--green-dark);text-align:center;margin-bottom:4px}.login-err{background:#fde0e0;color:var(--danger);padding:9px 12px;border-radius:8px;font-size:13px;margin-top:12px}.logout-btn{margin:24px 22px 0;background:#ffffff1f;color:#fff;border:0;border-radius:8px;padding:10px 14px;font-size:14px;cursor:pointer;width:calc(100% - 44px)}.logout-btn:hover{background:#ffffff38}.nav .ni{width:20px;display:inline-block;text-align:center}.banner{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:10px;font-size:14px;margin-bottom:18px}.banner.ok{background:#dcf8e8;color:var(--green-dark)}.banner.warn{background:#fff4d6;color:#7a5a00}.banner.info{background:#e7f0ff;color:#2358b8}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;text-align:center}.stat-icon{font-size:22px}.stat-num{font-size:28px;font-weight:700;margin-top:4px}.stat-label{color:var(--muted);font-size:13px;margin-top:2px}.quick-actions{display:flex;gap:10px;flex-wrap:wrap}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}.two-col .span-2{grid-column:1 / -1}.action-bar{display:flex;align-items:center;gap:16px}.action-bar .result{font-size:14px}.btn.lg{padding:13px 26px;font-size:15px}.seg,.chips,.dow{display:flex;gap:8px;flex-wrap:wrap}.seg button,.chips button,.dow button{border:1px solid var(--border);background:#fff;border-radius:20px;padding:7px 14px;font-size:13px;cursor:pointer}.seg button.on,.chips button.on,.dow button.on{background:var(--green);color:#fff;border-color:var(--green)}.seg{margin-bottom:10px}.pick-list{max-height:240px;overflow:auto;border:1px solid var(--border);border-radius:8px;padding:6px 12px}.pick-list label{display:flex;align-items:center;gap:8px;margin:7px 0;color:var(--text)}.pick-list input{width:auto}.switch-row{display:flex;align-items:center;gap:14px;margin-top:12px;flex-wrap:wrap}.switch{display:flex;align-items:center;gap:8px;color:var(--text);margin:0}.switch input{width:auto}.code-help{margin-top:18px;background:#0f1b21;border-radius:10px;padding:14px 16px}.code-help .muted,.code-help .hint{color:#9fb3bd}.code-help pre{color:#dcecf2;font-size:12.5px;overflow:auto;margin:0;white-space:pre-wrap;word-break:break-all}code.key{background:#eef2f4;padding:2px 6px;border-radius:5px;font-size:12px}@media(max-width:860px){.stat-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}}