body {
    font-family: Arial, sans-serif;
    background-color: #e3f2fd;
    text-align: center;
    padding: 20px;
}

.container {
    background: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    margin: auto;
}

h1 {
    color: #2b8cef;
}

p {
    font-size: 16px;
}

.btn {
    display: block;
    width: 100%;
    margin: 10px 0;
    padding: 10px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

.btn.primary {
    background-color: white;
    color: black;
    border: 2px solid #1e7bb8;
    transition-duration: 0.4s;
}

.btn.primary:hover {
    background-color: #1e7bb8;
    color: white;
}

.btn.secondary {
    background-color: white;
    color: black;
    border: 2px solid #28a745;
    transition-duration: 0.4s;
}
.btn.secondary:hover {
    background-color: #28a745;
    color: white;
}

.btn.danger {
    background-color: white;
    color: black;
    border: 2px solid #dc3545;
    transition-duration: 0.4s;
}
.btn.danger:hover {
    background-color: #dc3545;
    color: white;
}

.btn.disabled {
    opacity: 0.4 !important;
    cursor: not-allowed;
}

.hidden {
    display: none;
}

.message {
    padding: 10px;
    border-radius: 5px;
    margin-top: 10px;
}

.message.warning {
    background-color: #ffeb3b;
    color: #856404;
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
}

.footer {
    margin-top: 20px;
    font-size: 14px;
    color: #555;
    background: #f1f1f1;
    padding: 10px;
    border-radius: 5px;
    max-width: 500px;
    margin: 20px auto;
}