:root{--bg:#f5f7fb;--card:#fff;--txt:#1f2937;--muted:#6b7280;--pri:#1d4ed8;--bd:#e5e7eb;--danger:#b91c1c;--ok:#166534}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--txt)}.topbar{background:#0f172a;color:white;padding:14px 22px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}.topbar a{color:white;text-decoration:none;margin-left:14px}.container{max-width:1180px;margin:24px auto;padding:0 16px}.card{background:var(--card);border:1px solid var(--bd);border-radius:12px;padding:18px;margin-bottom:18px;box-shadow:0 1px 3px #0001}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.stat{font-size:28px;font-weight:bold}.muted{color:var(--muted)}label{display:block;font-weight:bold;margin-top:10px}input,select,textarea{width:100%;padding:10px;border:1px solid var(--bd);border-radius:8px;background:white}button,.btn{display:inline-block;border:0;background:var(--pri);color:white;padding:10px 14px;border-radius:8px;text-decoration:none;cursor:pointer;margin:4px 2px}.btn.sec{background:#475569}.btn.danger{background:var(--danger)}table{width:100%;border-collapse:collapse;background:white;border-radius:12px;overflow:hidden}th,td{padding:10px;border-bottom:1px solid var(--bd);text-align:left;vertical-align:top}th{background:#eef2ff}.alert{padding:12px;border-radius:8px;margin-bottom:14px}.alert.ok{background:#dcfce7;color:var(--ok)}.login{max-width:420px;margin:50px auto}.actions{white-space:nowrap}.footer{text-align:center;color:var(--muted);padding:20px}.right{text-align:right}@media(max-width:700px){.topbar{display:block}.topbar nav{margin-top:10px}.topbar a{display:inline-block;margin:6px 8px 0 0}table{font-size:13px}.actions{white-space:normal}}