body {
    background-image: linear-gradient(#4CAF50, #63B967, #FFFFFF);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    text-align: center;
    padding: 20px;
    background-color: #4CAF50;
    color: white;
}

h1, h2 {
    margin: 0;
}

main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.section {
    text-align: center;
    padding: 20px;
    border-radius: 10px;
}

.intro-img {
    max-width: 100%;
    height: auto;
}

button.btn {
    background-color: #FFA500;
    color: white;
    margin: auto;
}

button {
    color: #fff;
    background-color: #808080;
    width: 257px;
    height: 76px;
    border-radius: 20px;
    font-size: 24px;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: right;
    align-items: center;
    margin: 10px 0;
    margin: right;
}

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

.input-container {
    display: flex;
    justify-content: space-between;
    gap: 20px; /* Space between input groups */
    width: 100%;
}

.input-group {
    background-color: #808080;
    padding: 15px; /* Increased padding for better visibility */
    border-radius: 10px;
    box-sizing: border-box; /* Ensures padding is included in width/height */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%; /* Ensures all input groups are of equal width */
    font-size: 200%;
}

.input-group input[type="range"] {
    width: 90%; 
    margin-top: 10px;
}

.input-group label {
    font-weight: bold;
}


.button-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-top: 20px; /* Adjust spacing if necessary */
}

#calculateButton {
    width: calc(100% - 40px); /* Adjust width to fit between age and weight inputs */
}

#result h2:first-of-type {
    margin-bottom: 20px; /* Space between "Result" heading and result */
}

#calorieResult {
    margin-bottom: 20px; /* Space between result and "Calories/Day" */
}

#result {
    color: white;
}

@media (max-width: 768px) {
    button {
        width: auto;
        font-size: 1rem;
        padding: 10px;
    }
}