* {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
 }

 body {
     font-family: 'Arial', sans-serif;
     background: lightblue;
     /* height: 65vh; */
     display: flex;
     justify-content: center;
     align-items: center;
 }

 .login-container {
     background: #fff;
     padding: 40px;
     border-radius: 15px;
     box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
     width: 100%;
     max-width: 400px;
     text-align: center;
     animation: fadeIn 1.5s ease-in-out;
 }

 @keyframes fadeIn {
     0% {
         opacity: 0;
         transform: translateY(-30px);
     }

     100% {
         opacity: 1;
         transform: translateY(0);
     }
 }

 .login-form h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
    position: relative;
    font-weight: bold;
 }

 .login-form h2::after {
     content: '';
     position: absolute;
     width: 60px;
     height: 3px;
     background: #4CAF50;
     bottom: -10px;
     left: 50%;
     transform: translateX(-50%);
 }

 .input-group {
     margin-bottom: 30px;
     position: relative;
 }

 .input-group label {
     font-size: 1.2em;
     color: #555;
 }

 .input-group input {
     width: 100%;
     padding: 15px;
     margin-top: 8px;
     font-size: 1em;
     border: 2px solid #ddd;
     border-radius: 10px;
     outline: none;
     transition: border-color 0.3s ease;
 }

 .input-group input:focus {
     border-color: #6e8efb;
 }

 button {
    width: 28%;
    padding: 15px;
    background: lightgreen;
    color: #000;
    border: none;
    border-radius: 10px;
    font-size: 2.2em;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.3s ease;
 }

 button:hover {
     background: lightgreen;
     transform: translateY(-3px);
 }

 button:active {
     transform: translateY(0);
 }

 h1.page-header {
    font-weight: bold;
}

span {
    font-weight: bold;
    color: black;
}

.captcha {
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 5px;
    color: #333;
    background-color: #f2f2f2;
    padding: 10px;
    border: 2px solid #ccc;
    display: inline-block;
    user-select: none;
}
.refresh-btn {
    background: #007bff;
    color: #fff;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
    margin-left: 10px;
    border-radius: 4px;
}
.refresh-btn:hover {
    background: #0056b3;
}

.bg-danger {
    color: red;
}