* {
   box-sizing: border-box;
   margin: 0;
   padding: 0;
   font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
 }

 body {
   background: #f4f7fe;
   display: flex;
   justify-content: center;
   align-items: center;
   min-height: 100vh;
   padding: 20px;
 }

 .card {
   background: #ffffff;
   padding: 30px;
   border-radius: 12px;
   box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
   width: 100%;
   max-width: 400px;
   transition: all 0.3s ease;
 }

 .hidden {
   display: none;
 }

 .card h2 {
   margin-bottom: 8px;
   color: #333;
   font-size: 22px;
 }

 .card p {
   color: #666;
   font-size: 14px;
   margin-bottom: 20px;
 }

 .form-group {
   margin-bottom: 16px;
 }

 .form-group label {
   display: block;
   font-size: 13px;
   color: #444;
   margin-bottom: 6px;
   font-weight: 600;
 }

 .form-group input {
   width: 100%;
   padding: 12px 14px;
   border: 1px solid #ccc;
   border-radius: 8px;
   font-size: 14px;
   outline: none;
   transition: border-color 0.2s;
 }

 .form-group input:focus {
   border-color: #4f46e5;
 }

 .btn {
   width: 100%;
   padding: 12px;
   background: #4f46e5;
   color: #fff;
   border: none;
   border-radius: 8px;
   font-size: 15px;
   font-weight: 600;
   cursor: pointer;
   transition: background 0.2s;
 }

 .btn:hover {
   background: #4338ca;
 }

 .message {
   margin-top: 12px;
   font-size: 13px;
   text-align: center;
 }

 .error {
   color: #dc2626;
 }

 .success {
   color: #16a34a;
 }

 .input-field {
   position: relative;
   overflow: hidden;
 }

 .input-field .show {
   position: absolute;
   right: 10px;
   top: 15px;
   cursor: pointer;
 }