html, body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background: linear-gradient(135deg, #e0f7fa 0%, #b9fbc0 100%);
    color: #333;
}

header {
    background-color: #00796b;
    color: #fff;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

header h1 {
    margin: 0;
    font-size: 2.75rem;
    letter-spacing: 3px;
    font-weight: 700;
}

main {
    padding: 5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.environment-selector {
    margin-bottom: 3rem; /* Adds space below the selector */
    text-align: center; /* Center aligns the form */
}

.environment-selector form {
    display: inline-block; /* Centers the form */
}

.environment-selector label {
    font-size: 1.125rem; /* Increases font size */
    margin-right: 1rem; /* Space between label and select */
    font-weight: bold; /* Makes the font bold */
    font-family: 'Roboto', sans-serif; /* Sets the font family */
}

#environment {
    padding: 0.5rem 1rem; /* Adds padding for better click area */
    font-size: 1rem; /* Adjust font size */
    border: 2px solid #00796b; /* Solid border matching the theme */
    border-radius: 8px; /* Rounded corners */
    appearance: none; /* Removes default styling */
    cursor: pointer; /* Changes cursor to pointer */
    transition: border-color 0.3s ease; /* Smooth border color transition */
}

#environment:hover,
#environment:focus {
    border-color: #004d40; /* Darker border color on hover/focus */
}

.container-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);  /* Creates 3 equal columns */
    gap: 2.5rem;
    width: 100%;
    max-width: 1400px;
    margin-bottom: 4rem;
}

.container {
    background-color: #ffffff;
    border: 1px solid #ddd;
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.container:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    background-color: #f9f9f9;
}

.container h2 {
    margin-top: 0;
    font-size: 2.25rem;
    color: #004d40;
    border-bottom: 3px solid #00796b;
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.container p {
    color: #666;
    margin: 1.5rem 0;
}

.btn {
    display: inline-block;
    background-color: #004d40;
    color: #fff;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 12px;
    margin-top: 1rem;
    font-size: 1.125rem;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.btn:hover {
    background-color: #00332e;
    transform: scale(1.05);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
}