/* Body with full-screen background */
body {
    background: url('../images/login.JPG') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
    margin: 0;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Dark overlay to enhance text visibility */
body::before {
    content: "";
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 0;
}

/* RSVP Card Styling */
.rsvp-card {
    background-color: white;
    padding: 5px 30px;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 500px;
    z-index: 1;
    position: relative;
}

/* Form Focus Styling */
.form-control:focus {
    border-color: #1b7895;
    box-shadow: 0 0 0 0.2rem rgba(27, 120, 149, 0.25);
}

/* Button Styling */
.btn-success {
    background-color: #1b7895;
    border: none;
}

.btn-success:hover {
    background-color: #155c72;
}

/* Responsive Success Message */
#successMessage {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    color: #1b7895;
}

.btn {
    color: #1b7895;
    border-color: #1b7895;;
}

.btn:hover {
    background-color: #155c72;
    color: white;
}
