:root{--red:#b40013;--dark:#131820;--muted:#667085;--line:#e5e7eb;--bg:#f5f6f8;--ok:#16803b;--warn:#a15c00}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:#20242b}.layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.sidebar{background:var(--dark);color:#fff;padding:24px 16px}.brand{font-size:22px;font-weight:800;margin:0 8px 28px}.brand span{color:#ef4053}.nav a{display:block;color:#d9dde4;text-decoration:none;padding:12px 14px;border-radius:7px;margin:3px 0}.nav a:hover,.nav a.active{background:var(--red);color:#fff}.main{padding:30px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.topbar h1{margin:0;font-size:28px}.user{color:var(--muted);font-size:14px}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card,.panel{background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 2px 8px rgba(15,23,42,.04)}.card{padding:20px}.metric{font-size:30px;font-weight:800;margin-top:8px}.label{color:var(--muted);font-size:14px}.panel{padding:20px;margin-top:20px}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}.panel h2{margin:0;font-size:20px}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:middle}th{font-size:12px;text-transform:uppercase;color:var(--muted)}.btn{display:inline-block;border:0;border-radius:6px;padding:10px 14px;background:var(--red);color:#fff;text-decoration:none;font-weight:700;cursor:pointer}.btn.secondary{background:#fff;color:#303640;border:1px solid #cfd4dc}.btn.danger{background:#c62828}.btn.small{padding:7px 10px;font-size:12px}.badge{display:inline-block;padding:5px 9px;border-radius:30px;font-size:12px;font-weight:700;background:#eceff3}.badge.active{background:#e7f6eb;color:var(--ok)}.badge.expired,.badge.suspended,.badge.revoked,.badge.inactive{background:#fdecec;color:#b42318}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}.field input,.field select{width:100%;padding:11px;border:1px solid #ccd2da;border-radius:6px;background:#fff}.actions{margin-top:18px}.notice{padding:13px 15px;border-radius:7px;margin-bottom:18px;background:#edf7ee;color:#175f2c;border-left:4px solid #2c9148}.notice.error{background:#fdf0f0;color:#8e1c1c;border-left-color:#c62828}.login{max-width:430px;margin:90px auto;background:#fff;padding:32px;border-radius:12px;border:1px solid var(--line);box-shadow:0 12px 35px rgba(0,0,0,.08)}.login h1{margin-top:0;color:var(--red)}.login .field{margin:15px 0}.muted{color:var(--muted)}code{background:#f0f2f5;padding:3px 6px;border-radius:4px}@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{position:static}.cards,.grid{grid-template-columns:1fr}.main{padding:18px}.nav{display:flex;flex-wrap:wrap}.nav a{margin:3px}}