body {
    margin: 0;
    padding: 0;
    height: 100vh;
    font-family: 'Segoe UI', sans-serif;
    background: #f2f2f2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    background-color: white;
    padding: 40px;
    border-radius: 14px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 400px;
    position: relative;
}

h1 {
    margin-bottom: 20px;
    font-size: 28px;
    color: #333;
}

p {
    font-size: 18px;
    margin-bottom: 30px;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn {
    padding: 12px;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: white;
    transition: background 0.3s ease;
}

.entrada {
    background-color: #28a745;
}

.entrada:hover {
    background-color: #218838;
}

.salida {
    background-color: #dc3545;
}

.salida:hover {
    background-color: #c82333;
}

.logout-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    text-decoration: none;
    background: #6c757d;
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 14px;
}

.logout-btn:hover {
    background-color: #5a6268;
}