:root{--red:#d62828;--red-dark:#a91f1f;--bg:#f5f6f8;--text:#18202a;--muted:#6b7280;--border:#e5e7eb;--card:#fff}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}.auth{min-height:100vh;display:grid;place-items:center;padding:28px}.auth-card{width:100%;max-width:430px;background:var(--card);border:1px solid var(--border);border-radius:26px;box-shadow:0 18px 50px rgba(17,24,39,.08);padding:34px}.logo{display:block;max-width:250px;margin:0 auto 24px}.favicon{width:58px;height:58px;border-radius:14px;display:block;margin:0 auto 14px}.title{font-size:24px;font-weight:800;margin:0 0 8px;text-align:center}.subtitle{font-size:14px;color:var(--muted);text-align:center;margin:0 0 26px;line-height:1.5}.field{margin-bottom:16px}.field label{display:block;font-weight:700;font-size:13px;margin-bottom:7px}.input,select{width:100%;border:1px solid var(--border);border-radius:14px;padding:13px 14px;font-size:15px;background:#fff}.input:focus,select:focus{outline:3px solid rgba(214,40,40,.13);border-color:var(--red)}.btn{border:0;border-radius:14px;padding:13px 16px;font-weight:800;cursor:pointer;text-decoration:none;display:inline-flex;justify-content:center;align-items:center;gap:8px}.btn-primary{background:var(--red);color:#fff;width:100%}.btn-primary:hover{background:var(--red-dark)}.alert{border-radius:14px;padding:13px 14px;margin-bottom:16px;font-size:14px}.alert-error{background:#fff1f1;color:#991b1b;border:1px solid #fecaca}.alert-ok{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}.shell{display:flex;min-height:100vh}.sidebar{width:270px;background:#fff;border-right:1px solid var(--border);padding:22px}.sidebar .logo{max-width:210px;margin:0 0 28px}.nav a{display:block;padding:12px 14px;border-radius:14px;color:#374151;text-decoration:none;font-weight:700;margin-bottom:6px}.nav a.active,.nav a:hover{background:#fff1f1;color:var(--red)}.main{flex:1;padding:28px}.topbar{background:#fff;border:1px solid var(--border);border-radius:22px;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card{background:#fff;border:1px solid var(--border);border-radius:22px;padding:22px;box-shadow:0 8px 30px rgba(17,24,39,.04)}.metric{font-size:28px;font-weight:900;margin-top:8px}.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;background:#fff;border-radius:18px;overflow:hidden}th,td{padding:13px 14px;border-bottom:1px solid var(--border);text-align:left;font-size:14px}th{background:#fafafa;color:#374151}.actions{display:flex;gap:10px;align-items:center}.logout{color:var(--red);text-decoration:none;font-weight:800}@media(max-width:900px){.shell{display:block}.sidebar{width:100%;border-right:0;border-bottom:1px solid var(--border)}.grid{grid-template-columns:1fr}.topbar{display:block}.main{padding:18px}}