:root{--bg:#f4f6f8;--card:#fff;--text:#17202a;--muted:#6b7280;--line:#e5e7eb;--blue:#2563eb;--green:#15803d;--red:#b91c1c}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
nav{background:#111827;color:#fff}.nav-inner{max-width:1200px;margin:auto;padding:15px 20px;display:flex;justify-content:space-between;align-items:center}.brand{font-weight:800;color:#fff;text-decoration:none;font-size:18px}.nav-links{display:flex;align-items:center;gap:16px}.nav-links a{color:#fff;text-decoration:none}
.container{max-width:1200px;margin:30px auto;padding:0 20px}.container.narrow{max-width:700px}.page-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px}.page-head h1{margin:0 0 3px}.muted{color:var(--muted)}.url{word-break:break-all;font-size:13px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:18px}.stat,.card{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 2px 10px #00000008}.stat{padding:18px}.stat span{color:var(--muted);font-size:13px}.stat strong{display:block;font-size:28px;margin-top:4px}.green{color:var(--green)}.red{color:var(--red)}
.card{padding:20px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:13px 10px;border-bottom:1px solid var(--line);vertical-align:middle}th{font-size:12px;text-transform:uppercase;color:var(--muted)}
.badge{display:inline-block;border-radius:999px;padding:5px 9px;font-size:11px;font-weight:800}.badge.ONLINE{background:#dcfce7;color:#166534}.badge.PENDING{background:#e5e7eb;color:#374151}.badge.ERROR_4XX,.badge.ERROR_5XX,.badge.HTTP_ERROR,.badge.TIMEOUT,.badge.SSL_ERROR,.badge.DNS_ERROR,.badge.CONNECTION_ERROR{background:#fee2e2;color:#991b1b}
.actions{display:flex;gap:6px;flex-wrap:wrap}.inline{display:inline}.btn{display:inline-block;border:0;border-radius:8px;padding:9px 13px;background:var(--blue);color:#fff;text-decoration:none;cursor:pointer;font-weight:600}.btn.small{padding:7px 9px;font-size:12px}.btn.secondary{background:#374151}.btn.light{background:#e5e7eb;color:#111827}.btn.danger{background:#b91c1c}.btn.full{width:100%;margin-top:18px}
.flash{padding:12px 14px;border-radius:9px;margin-bottom:15px;background:#dcfce7;color:#166534}.flash.error{background:#fee2e2;color:#991b1b}.empty{text-align:center;padding:45px 20px}
label{display:block;font-weight:700;margin:16px 0 6px}input{width:100%;border:1px solid #d1d5db;border-radius:8px;padding:11px 12px;font:inherit}.input-row{display:flex;align-items:center;gap:10px}.input-row input{max-width:220px}.hint{font-size:12px;color:var(--muted)}
.auth{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-card{background:#fff;width:min(420px,100%);padding:28px;border-radius:15px;border:1px solid var(--line);box-shadow:0 10px 35px #0001}.auth-card h1{margin-top:0}.center{text-align:center}
small.muted{display:block;margin-top:4px}
@media(max-width:850px){.stats{grid-template-columns:repeat(2,1fr)}.page-head{align-items:flex-start;flex-direction:column}.nav-links span{display:none}}
@media(max-width:600px){.stats{grid-template-columns:1fr 1fr}.container{padding:0 12px}.nav-inner{padding:13px 12px}}