/* Global Styles */
body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background-color: #343a40; /* Dark background */
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Centering and styling the container */
.container {
    width: 100%;
    max-width: 600px;
    padding: 15px;
}

/* Card styling */
.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.3);
}

.card-header {
    background-color: #28a745; /* Green header */
    color: white;
    text-align: center;
    font-size: 1.5rem;
    padding: 15px;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.card-body {
    padding: 30px;
}

/* Form input styles */
.form-control {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    font-size: 16px;
    border: 1px solid #ced4da;
    border-radius: 5px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: #28a745;
    outline: none;
}

/* Labels inside form inputs */
.form-label-group label {
    font-size: 16px;
    color: #6c757d;
    margin-bottom: 5px;
    display: block;
}

/* Button styling */
.btn {
    display: inline-block;
    width: 100%;
    padding: 10px;
    font-size: 18px;
    font-weight: bold;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: red;
}

/* Styling for links */
.text-center {
    text-align: center;
}

.text-center a {
    display: block;
    margin-top: 10px;
    font-size: 14px;
    color: #007bff;
    text-decoration: none;
}

.text-center a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
    /* For tablets and small laptops */
    .container {
        max-width: 80%;
    }
    .card-header {
        font-size: 1.25rem;
    }
    .card-body {
        padding: 20px;
    }
    .form-control {
        font-size: 14px;
    }
    .btn {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    /* For tablets and smaller screens */
    .container {
        max-width: 90%;
    }
    .card-header {
        font-size: 1.2rem;
    }
    .card-body {
        padding: 15px;
    }
    .form-control {
        font-size: 14px;
    }
    .btn {
        font-size: 16px;
    }
    .text-center a {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    /* For mobile devices */
    .container {
        max-width: 95%;
        padding: 10px;
    }
    .card-header {
        font-size: 1rem;
        padding: 12px;
    }
    .card-body {
        padding: 10px;
    }
    .form-control {
        font-size: 14px;
    }
    .btn {
        font-size: 14px;
        padding: 8px;
    }
    .text-center a {
        font-size: 12px;
    }
}

@media (max-width: 320px) {
    /* For very small mobile screens */
    .container {
        max-width: 100%;
    }
    .card-header {
        font-size: 1rem;
        padding: 10px;
    }
    .card-body {
        padding: 8px;
    }
    .form-control {
        font-size: 12px;
    }
    .btn {
        font-size: 14px;
        padding: 8px;
    }
}