body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #333;
}

.container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 30px;
    width: 90%;
    max-width: 500px;
    text-align: center;
}

h1 {
    color: #e74c3c;
    margin-bottom: 20px;
}

.logo {
    width: 100px;
    height: auto;
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

input[type="text"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    box-sizing: border-box;
}

button {
    background-color: #e74c3c;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
}

button:hover {
    background-color: #c0392b;
}

.info {
    margin-top: 25px;
    font-size: 14px;
    color: #666;
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.error {
    color: #e74c3c;
    margin-top: 10px;
    font-size: 14px;
}

.success {
    color: #27ae60;
    margin-top: 10px;
    font-size: 14px;
}

.hidden {
    display: none;
}

.attempts-warning {
    color: #f39c12;
    font-weight: bold;
}

.loading {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #e74c3c;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}