body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    color: #333;
}

.login-container, .lab-home {
    text-align: center;
    margin: 50px auto;
    max-width: 400px;
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

input, button {
    display: block;
    width: 100%;
    margin: 15px 0;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 16px;
}

button {
    background-color: #4CAF50;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

.error-message {
    color: red;
    font-size: 14px;
}

.card-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 12px;
    width: 300px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.card img {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 15px;
}

.card button {
    margin-top: 10px;
    background-color: #007BFF;
    color: white;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.card button:hover {
    background-color: #0056b3;
}

.profile {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.profile img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #007BFF;
}

.profile span {
    font-size: 16px;
    font-weight: bold;
}

.profile-modal {
    position: absolute;
    top: 60px;
    right: 10px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: none;
}

.profile-modal input {
    margin: 5px 0;
    padding: 5px;
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.profile-modal button {
    margin-top: 10px;
    width: 100%;
    background-color: #007BFF;
    color: white;
    border: none;
    padding: 5px;
    border-radius: 4px;
    cursor: pointer;
}

.profile-modal button:hover {
    background-color: #0056b3;
}