:root{--bg:#f6f7fb;--card:#fff;--text:#1f2937;--muted:#6b7280;--line:#e5e7eb;--pri:#4f46e5;--green:#065f46;--red:#991b1b;}
*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:var(--pri)}
.layout{display:flex;min-height:100vh}.sidebar{width:250px;background:#111827;color:#fff;padding:20px}.sidebar .brand{font-size:20px;font-weight:700;margin-bottom:20px}.sidebar .userbox{padding:12px;background:#1f2937;border-radius:10px;margin-bottom:20px;display:flex;flex-direction:column;gap:4px}.sidebar nav{display:flex;flex-direction:column;gap:8px}.sidebar nav a{color:#e5e7eb;padding:10px 12px;border-radius:8px}.sidebar nav a:hover{background:#374151}
.content{flex:1;padding:24px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:20px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.stat{font-size:28px;font-weight:700}.muted{color:var(--muted)}
input,select,textarea{width:100%;padding:12px;border:1px solid #d1d5db;border-radius:10px;background:#fff}textarea{min-height:120px}label{display:block;font-weight:700;margin-bottom:6px}form .field{margin-bottom:14px}.btn{display:inline-block;padding:11px 16px;border-radius:10px;background:var(--pri);color:#fff;border:none;cursor:pointer}.btn.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}.btn.danger{background:#dc2626}.flash{padding:12px 14px;border-radius:10px;margin-bottom:16px}.flash.success{background:#ecfdf5;color:var(--green)}.flash.error{background:#fef2f2;color:var(--red)}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#f9fafb}.badge{display:inline-block;padding:4px 10px;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:12px}.hint{font-size:13px;color:var(--muted);margin-top:4px}.hero{display:flex;justify-content:space-between;align-items:start;gap:18px}.hero h1{margin:0 0 6px 0}.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px 0}.tabs a{padding:10px 14px;background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--text)}.tabs a.active{background:#eef2ff;border-color:#c7d2fe;color:#3730a3}.code{white-space:pre-wrap;background:#0f172a;color:#e2e8f0;padding:14px;border-radius:12px;font-family:monospace}.login-wrap{max-width:420px;margin:60px auto}.small{font-size:12px;color:var(--muted)}
@media(max-width:900px){.layout{display:block}.sidebar{width:auto}.grid-2,.grid-3{grid-template-columns:1fr}}