*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8f9fa;--surface:#ffffff;--border:#e2e8f0;--text:#1a202c;--muted:#718096;--primary:#4f46e5;--primary-hover:#4338ca;--danger:#e53e3e;--success:#38a169;--warning:#d69e2e;--radius:8px;--shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.06)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;font-size:14px}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--surface);border-right:1px solid var(--border);padding:24px 0;flex-shrink:0}.sidebar h1{font-size:16px;font-weight:700;padding:0 20px 20px;color:var(--primary)}.sidebar nav a{display:block;padding:9px 20px;color:var(--text);font-size:13px;border-left:3px solid transparent}.sidebar nav a.active,.sidebar nav a:hover{background:#eef2ff;border-left-color:var(--primary);color:var(--primary);text-decoration:none}.main{flex:1 1;padding:32px;overflow-y:auto}.page-title{font-size:22px;font-weight:700;margin-bottom:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card-body{padding:20px}.card-header{padding:16px 20px;border-bottom:1px solid var(--border);font-weight:600;font-size:15px}table{width:100%;border-collapse:collapse}td,th{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}th{font-weight:600;background:var(--bg)}tr:last-child td{border-bottom:none}tr:hover td{background:#f7f8fc}.form-group{margin-bottom:16px}label{display:block;font-weight:500;margin-bottom:6px;font-size:13px}input[type=email],input[type=text],select,textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;font-family:inherit;transition:border-color .15s;background:var(--surface)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.1)}textarea{resize:vertical;min-height:100px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:none;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;transition:background .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg)}.btn-danger{background:var(--danger);color:#fff}.btn-sm{padding:4px 10px;font-size:12px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}.badge-active{background:#c6f6d5;color:#276749}.badge-inactive{background:#fed7d7;color:#9b2c2c}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.text-muted{color:var(--muted)}.text-sm{font-size:12px}.font-mono{font-family:SFMono-Regular,Consolas,monospace}