:root{color-scheme:light;font-family:system-ui,-apple-system,Segoe UI,sans-serif;--bg: #f5f6f8;--panel: #ffffff;--border: #e2e5ea;--text: #1a1d23;--muted: #6b7280;--accent: #16a34a;--accent-dark: #15803d;--danger: #dc2626;--warn: #d97706}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--panel);border-right:1px solid var(--border);padding:20px 12px;display:flex;flex-direction:column;gap:4px}.sidebar h1{font-size:16px;padding:0 10px 16px}.sidebar a,.sidebar button.logout{display:block;padding:10px 12px;border-radius:8px;text-decoration:none;color:var(--text);border:none;background:none;text-align:left;font-size:14px}.sidebar a.active,.sidebar a:hover{background:var(--bg)}.sidebar button.logout{margin-top:auto;color:var(--danger)}.content{flex:1;padding:28px 36px;max-width:980px}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px}.field{margin-bottom:14px;display:flex;flex-direction:column;gap:6px}.field label{font-size:13px;font-weight:600;color:var(--muted)}.field input,.field textarea,.field select{padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px}.row{display:flex;gap:14px}.row>.field{flex:1}button.primary{background:var(--accent);color:#fff;border:none;padding:10px 16px;border-radius:6px;font-size:14px;font-weight:600}button.primary:hover{background:var(--accent-dark)}button.secondary{background:#fff;color:var(--text);border:1px solid var(--border);padding:10px 16px;border-radius:6px;font-size:14px}button.danger{background:#fff;color:var(--danger);border:1px solid var(--danger);padding:8px 12px;border-radius:6px;font-size:13px}button:disabled{opacity:.5;cursor:not-allowed}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600}.badge.draft{background:#e5e7eb;color:#374151}.badge.queued,.badge.sending{background:#dbeafe;color:#1d4ed8}.badge.paused{background:#fef3c7;color:#92400e}.badge.completed,.badge.sent,.badge.connected,.badge.delivered,.badge.read{background:#dcfce7;color:#166534}.badge.failed{background:#fee2e2;color:#991b1b}.badge.pending,.badge.disconnected{background:#f3f4f6;color:#4b5563}.badge.qr_pending{background:#fef3c7;color:#92400e}.error-text{color:var(--danger);font-size:13px}.hint{color:var(--muted);font-size:12px}.progress-bar{height:10px;border-radius:999px;background:var(--border);overflow:hidden}.progress-bar>div{height:100%;background:var(--accent)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{width:340px}