/* Define CSS variables */
:root {
    --primary-color: #00796b; /* Dark teal */
    --secondary-color: #f4f4f4; /* Light grey */
    --accent-color: #333; /* Dark grey for text */
    --white-color: #ffffff; /* White */
    --border-color: #ccc; /* Light grey for borders */
    --font-family: 'Gotham', Arial, sans-serif; /* Gotham font with fallback */
}

/* Reset styles */
body, h1, figure, img {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Body styling */
body {
    font-family: var(--font-family);
    background-color: var(--secondary-color);
}

/* Header styling */
header {
    text-align: center;
    padding: 20px;
    background-color: var(--primary-color);
    color: var(--white-color);
}

/* Main grid container */
.grid-container {
    display: grid;
    gap: 20px; /* Space between grid items */
    padding: 20px;
    grid-template-columns: repeat(1, 1fr); /* Default to one column */
}

/* Styling each grid item */
.grid-item figure {
    margin: 0;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--white-color);
}

/* Placeholder images */
img {
    width: 100%;
    height: auto;
    display: block;
}

/* Caption styling */
.grid-item figcaption {
    padding: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-color);
}

/* Responsive grid layout */
@media (min-width: 600px) { /* Tablets */
    .grid-container {
        grid-template-columns: repeat(3, 1fr); /* Two columns on tablets */
    }
}

@media (min-width: 900px) { /* Desktops */
    .grid-container {
        grid-template-columns: repeat(6, 1fr); /* Three columns on desktops */
    }
}