:root{--bg:#f4f6f8;--panel:#fff;--text:#1f2937;--muted:#6b7280;--line:#e5e7eb;--ok:#166534;--okbg:#dcfce7;--warn:#92400e;--warnbg:#fef3c7;--bad:#991b1b;--badbg:#fee2e2}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
.app{display:flex;min-height:100vh}.sidebar{width:235px;background:#111827;color:#fff;padding:22px 16px;position:fixed;inset:0 auto 0 0}.brand{font-size:20px;font-weight:700;margin-bottom:24px}.brand small{font-size:11px;color:#9ca3af}
.sidebar nav{display:grid;gap:7px}.sidebar a{color:#e5e7eb;text-decoration:none;padding:10px 12px;border-radius:8px}.sidebar a:hover{background:#1f2937}.sidebar-footer{position:absolute;left:16px;right:16px;bottom:18px;color:#9ca3af;font-size:13px}.sidebar-footer a{padding:4px 0;display:block}
.content{margin-left:235px;padding:28px;width:calc(100% - 235px)}h1{margin:0 0 18px;font-size:26px}.sub{color:var(--muted);margin-top:-10px;margin-bottom:24px}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.metric{font-size:28px;font-weight:700;margin-top:8px}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}th,td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}th{background:#f9fafb;color:#374151}tr:last-child td{border-bottom:none}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:#e5e7eb;font-size:12px;font-weight:700}.badge.ok{background:var(--okbg);color:var(--ok)}.badge.warn{background:var(--warnbg);color:var(--warn)}.badge.bad{background:var(--badbg);color:var(--bad)}
.login-wrap{max-width:420px;margin:9vh auto}.login-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px}.field{display:grid;gap:6px;margin-bottom:15px}input,select{padding:11px 12px;border:1px solid #d1d5db;border-radius:8px;width:100%}button,.btn{background:#111827;color:#fff;border:0;padding:11px 16px;border-radius:8px;cursor:pointer;text-decoration:none;display:inline-block}.alert{padding:12px;border-radius:8px;margin-bottom:15px;background:#fee2e2;color:#991b1b}
@media(max-width:900px){.sidebar{width:190px}.content{margin-left:190px;width:calc(100% - 190px)}.grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.sidebar{position:static;width:100%;min-height:auto}.sidebar-footer{position:static;margin-top:20px}.app{display:block}.content{margin:0;width:100%;padding:16px}.grid{grid-template-columns:1fr}}