:root {
     --bg-main: #020712;
     --card-bg: #041424;
     --accent: #00ffa9;
     --accent-soft: #00ffc3;
     --accent-text: #00ff9d;
     --muted-text: #9ca7c3;
 }

 body {
     min-height: 100vh;
     margin: 0;
     background: radial-gradient(circle at top, #062442 0, #020712 55%, #000000 100%);
     color: #ffffff;
     font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
     display: flex;
     align-items: center;
     justify-content: center;
 }

 .shield-wrapper {
     width: 100%;
     max-width: 440px;
     padding: 24px 16px;
 }

 .shield-card {
     background: linear-gradient(145deg, #03101f, #041b30);
     border-radius: 24px;
     padding: 28px 24px 26px;
     box-shadow:
         0 0 0 1px rgba(0, 255, 169, 0.08),
         0 18px 45px rgba(0, 0, 0, 0.85);
     position: relative;
     overflow: hidden;
 }

 .shield-card::before {
     content: "";
     position: absolute;
     inset: -2px;
     border-radius: 26px;
     padding: 1px;
     background: linear-gradient(135deg, rgba(0, 255, 169, 0.5), rgba(0, 181, 255, 0.2), rgba(0, 255, 169, 0.15));
     -webkit-mask:
         linear-gradient(#000 0 0) content-box,
         linear-gradient(#000 0 0);
     -webkit-mask-composite: xor;
     mask-composite: exclude;
     opacity: 0.9;
     pointer-events: none;
 }

 .shield-logo-circle {
     width: 82px;
     height: 82px;
     border-radius: 50%;
     margin: 0 auto 14px;
     background: radial-gradient(circle at 30% 20%, #32ffe2, #00b3ff 40%, #004d82 75%, #00101b 100%);
     display: flex;
     align-items: center;
     justify-content: center;
     box-shadow:
         0 0 25px rgba(0, 255, 169, 0.4),
         0 0 50px rgba(0, 179, 255, 0.25);
 }

 .shield-logo-text {
     font-weight: 800;
     letter-spacing: 0.08em;
     font-size: 19px;
     text-align: center;
 }

 .shield-logo-text span {
     color: var(--accent);
 }

 .shield-mode-pill {
     display: inline-flex;
     align-items: center;
     gap: 8px;
     padding: 7px 14px;
     border-radius: 999px;
     background: rgba(0, 0, 0, 0.4);
     border: 1px solid rgba(0, 255, 169, 0.65);
     color: var(--accent-text);
     font-size: 11px;
     letter-spacing: 0.12em;
     text-transform: uppercase;
 }

 .shield-mode-dot {
     width: 8px;
     height: 8px;
     border-radius: 50%;
     background: var(--accent);
     box-shadow: 0 0 8px rgba(0, 255, 169, 0.9);
 }

 .shield-title {
     text-align: center;
     margin-top: 10px;
     margin-bottom: 4px;
     letter-spacing: 0.28em;
     text-transform: uppercase;
     font-size: 18px;
 }

 .shield-subtitle {
     text-align: center;
     color: var(--muted-text);
     font-size: 13px;
     margin-bottom: 22px;
 }

 .shield-label {
     font-size: 12px;
     color: var(--muted-text);
     margin-bottom: 4px;
     letter-spacing: 0.14em;
     text-transform: uppercase;
 }

 .shield-input {
     background: rgba(3, 20, 38, 0.95);
     border-radius: 12px;
     border: 1px solid rgba(97, 120, 155, 0.8);
     color: #e9f1ff;
     padding: 10px 12px;
     font-size: 14px;
 }

 .shield-input:focus {
     background: rgba(5, 33, 64, 0.98);
     border-color: var(--accent-soft);
     box-shadow: 0 0 0 2px rgba(0, 255, 169, 0.25);
     outline: 0;
     color: #ffffff;
 }

 .shield-input::placeholder {
     color: rgba(132, 152, 184, 0.9);
 }

 .shield-link {
     font-size: 12px;
     color: var(--accent-text);
     text-decoration: none;
 }

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

 .shield-btn-primary {
     margin-top: 14px;
     border-radius: 14px;
     border: none;
     width: 100%;
     padding: 12px 16px;
     font-weight: 600;
     letter-spacing: 0.18em;
     text-transform: uppercase;
     font-size: 13px;
     background: linear-gradient(90deg, #00ffa9, #00d3ff);
     color: #041017;
     box-shadow:
         0 10px 24px rgba(0, 255, 169, 0.45),
         0 0 18px rgba(0, 211, 255, 0.2);
 }

 .shield-btn-primary:hover {
     filter: brightness(1.06);
 }

 .shield-footer-text {
     text-align: center;
     margin-top: 16px;
     font-size: 12px;
     color: var(--muted-text);
 }

 .shield-footer-text span {
     color: var(--accent-text);
     cursor: pointer;
 }

 .shield-dots {
     margin-top: 10px;
     display: flex;
     justify-content: center;
     gap: 6px;
 }

 .shield-dots span {
     width: 6px;
     height: 6px;
     border-radius: 50%;
     background: rgba(82, 103, 141, 0.9);
 }

 .shield-dots span:nth-child(2) {
     background: var(--accent);
     box-shadow: 0 0 10px rgba(0, 255, 169, 0.9);
 }

 @media (min-width: 768px) {
     .shield-wrapper {
         padding: 32px 12px;
     }

     .shield-card {
         padding: 32px 28px 30px;
     }
 }