body {
     margin: 0;
     min-height: 100vh;
     font-family: Arial, sans-serif;
     background: #f4f7fb;
 }

 .admin-login-page {
     min-height: 100vh;
     display: flex;
     align-items: center;
     justify-content: center;
     padding: 24px;
 }

 .admin-login-shell {
     width: 100%;
     max-width: 1120px;
     min-height: 620px;
     display: flex;
     overflow: hidden;
     background: #fff;
     border-radius: 30px;
     box-shadow: 0 30px 80px rgba(15, 23, 42, .12);
 }

 .admin-login-visual {
     flex: 1;
     position: relative;
     padding: 46px;
     color: #fff;
     background:
         linear-gradient(135deg, rgba(15, 23, 42, .96), rgba(30, 64, 175, .92)),
         radial-gradient(circle at top right, rgba(59, 130, 246, .9), transparent 40%);
 }

 .admin-login-visual::after {
     content: "";
     position: absolute;
     inset: auto -80px -80px auto;
     width: 260px;
     height: 260px;
     border-radius: 999px;
     background: rgba(255,255,255,.08);
 }

 .admin-login-brand {
     position: relative;
     z-index: 2;
     display: flex;
     align-items: center;
     gap: 14px;
     margin-bottom: 80px;
 }

 .admin-login-logo {
     border-radius: 16px;
     display: flex;
     align-items: center;
     justify-content: center;
     font-weight: 700;
     font-size: 18px;
 }

 .admin-login-brand-title {
     margin: 0;
     font-size: 18px;
     font-weight: 700;
     letter-spacing: -.02em;
 }

 .admin-login-brand-subtitle {
     margin: 4px 0 0;
     font-size: 13px;
     color: rgba(255,255,255,.68);
 }

 .admin-login-hero {
     position: relative;
     z-index: 2;
     max-width: 440px;
 }

 .admin-login-badge {
     display: inline-flex;
     padding: 8px 12px;
     border-radius: 999px;
     background: rgba(255,255,255,.12);
     border: 1px solid rgba(255,255,255,.18);
     color: rgba(255,255,255,.84);
     font-size: 12px;
     font-weight: 700;
     margin-bottom: 20px;
 }

 .admin-login-hero h1 {
     margin: 0 0 18px;
     font-size: 42px;
     line-height: 1.1;
     letter-spacing: -.04em;
 }

 .admin-login-hero p {
     margin: 0;
     color: rgba(255,255,255,.72);
     font-size: 15px;
     line-height: 1.8;
 }

 .admin-login-form-area {
     width: 430px;
     padding: 54px 46px;
     display: flex;
     flex-direction: column;
     justify-content: center;
 }

 .admin-login-form-area h2 {
     margin: 0 0 10px;
     font-size: 28px;
     color: #0f172a;
     letter-spacing: -.03em;
 }

 .admin-login-form-area .intro {
     margin: 0 0 30px;
     color: #64748b;
     font-size: 14px;
     line-height: 1.7;
 }

 .admin-form-group {
     margin-bottom: 18px;
 }

 .admin-form-label {
     display: block;
     margin-bottom: 8px;
     color: #334155;
     font-size: 13px;
     font-weight: 700;
 }

 .admin-form-control {
     width: 100%;
     height: 50px;
     box-sizing: border-box;
     padding: 0 15px;
     border: 1px solid #dbe3ef;
     border-radius: 15px;
     background: #f8fafc;
     color: #0f172a;
     outline: none;
     font-size: 14px;
     transition: .2s ease;
 }

 .admin-form-control:focus {
     border-color: #2563eb;
     background: #fff;
     box-shadow: 0 0 0 4px rgba(37, 99, 235, .10);
 }

 .admin-login-row {
     display: flex;
     align-items: center;
     justify-content: space-between;
     gap: 12px;
     margin: 4px 0 22px;
 }

 .admin-check {
     display: flex;
     align-items: center;
     gap: 8px;
     color: #64748b;
     font-size: 13px;
 }

 .admin-link {
     color: #2563eb;
     text-decoration: none;
     font-size: 13px;
     font-weight: 700;
 }

 .admin-link:hover {
     text-decoration: underline;
 }

 .admin-btn-primary {
     width: 100%;
     height: 52px;
     border: none;
     border-radius: 16px;
     background: linear-gradient(135deg, #1d4ed8, #2563eb);
     color: #fff;
     font-size: 15px;
     font-weight: 700;
     cursor: pointer;
     box-shadow: 0 16px 30px rgba(37, 99, 235, .26);
     transition: .2s ease;
 }

 .admin-btn-primary:hover {
     transform: translateY(-1px);
     box-shadow: 0 20px 36px rgba(37, 99, 235, .34);
 }

 .admin-alert {
     padding: 13px 14px;
     margin-bottom: 18px;
     border-radius: 14px;
     font-size: 13px;
     line-height: 1.5;
 }

 .admin-alert-danger {
     color: #991b1b;
     background: #fef2f2;
     border: 1px solid #fecaca;
 }

 .admin-login-footer-note {
     margin-top: 24px;
     color: #94a3b8;
     font-size: 12px;
     line-height: 1.6;
     text-align: center;
 }

 @media (max-width: 900px) {
     .admin-login-shell {
         display: block;
         max-width: 520px;
         min-height: auto;
     }

     .admin-login-visual {
         display: none;
     }

     .admin-login-form-area {
         width: auto;
         padding: 36px 24px;
     }
 }