:root{--b:#0f172a;--p:#2563eb;--g:#f1f5f9;--t:#334155;--ok:#16a34a;--danger:#dc2626;--warn:#d97706}
*{box-sizing:border-box}body{margin:0;background:#eef2f7;color:var(--t);font-family:Arial,Helvetica,sans-serif}.layout{display:flex;min-height:100vh}.sidebar{width:250px;background:linear-gradient(180deg,#0f172a,#111827);color:#fff;padding:22px 16px;position:fixed;top:0;bottom:0;left:0}.brand{font-size:24px;font-weight:900;margin:8px 0 28px}.brand span{display:block;font-size:13px;color:#93c5fd;letter-spacing:.8px}.sidebar nav a{display:block;color:#dbeafe;text-decoration:none;padding:12px 13px;border-radius:12px;margin:5px 0;font-weight:700}.sidebar nav a:hover{background:#1d4ed8;color:#fff}.main{margin-left:250px;width:calc(100% - 250px);padding:22px}.topbar{background:#fff;border-radius:16px;padding:16px 20px;margin-bottom:16px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 10px 30px rgba(15,23,42,.06)}.card{background:#fff;border-radius:16px;padding:20px;margin-bottom:16px;box-shadow:0 10px 30px rgba(15,23,42,.06)}h1,h2,h3{margin-top:0;color:#0f172a}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stat{background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px;padding:18px}.stat b{font-size:26px;color:#0f172a}.btn{display:inline-block;background:var(--p);color:#fff;text-decoration:none;border:0;border-radius:10px;padding:10px 15px;font-weight:800;cursor:pointer}.btn.gray{background:#64748b}.btn.green{background:var(--ok)}.btn.red{background:var(--danger)}.btn.warn{background:var(--warn)}input,select,textarea{width:100%;padding:11px 12px;border:1px solid #cbd5e1;border-radius:10px;font-size:14px;background:#fff}textarea{min-height:170px}.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}.form-group{margin-bottom:14px}label{font-weight:800;display:block;margin-bottom:6px;color:#0f172a}.help{font-size:12px;color:#64748b;margin-top:5px}table{width:100%;border-collapse:collapse}th,td{padding:11px;border-bottom:1px solid #e2e8f0;text-align:left;vertical-align:top}th{background:#f8fafc;color:#0f172a}.alert{padding:12px 14px;border-radius:12px;margin-bottom:14px;font-weight:700}.alert.success{background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}.alert.warning{background:#fef3c7;color:#92400e}.login{max-width:440px;margin:7vh auto}.login .card{padding:32px}.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:#e0f2fe;color:#075985;font-size:12px;font-weight:900}.code{background:#0f172a;color:#dbeafe;padding:13px;border-radius:10px;white-space:pre-wrap;overflow:auto}.actions{display:flex;gap:8px;flex-wrap:wrap}@media(max-width:900px){.sidebar{position:static;width:100%}.layout{display:block}.main{margin:0;width:100%}.grid,.row,.row3{grid-template-columns:1fr}}