:root {
    /* final variables (constants)*/
    /*Colors*/
    --color-bg: #f7f9fb;
    --color-surface: #ffffff;
    --color-text: #1e2a36;
    --color-text-muted: #5f6f7f;
    --color-border: #dde5ec;
    --color-accent: #4a7fa8;
    --color-on-accent: white;
    --color-accent-hover: #3a6a90;

    /* Shapes */
    --radius: 16px;
    --button-radius: 999px;

    /* Fonts */
    --font: "Inter", sans-serif;
}

body {
    font-family: var(--font);
    background-color: var(--color-bg);
    color: var(--color-text);
}

header {
    text-align: center;
    padding: 64px 16px 48px;
}

h1,
h2 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    text-align: center;
    padding: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.card img {
    max-width: 100%;
    border-radius: var(--radius);
}

main {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
    gap: 24px;
    padding: 0 16px;
    max-width: 1100px;
    margin: 0 auto;
}

header p,
.card p {
    color: var(--color-text-muted);
}

.button {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--color-accent);
    color: var(--color-on-accent);
    text-decoration: none;
    border-radius: var(--button-radius);
    font-weight: 600;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.button:hover {
    background-color: var(--color-accent-hover);
    transform: scale(1.025);
}

footer {
    text-align: center;
    color: var(--color-text-muted);
    padding: 48px 16px;
}

header h1 {
    font-size: clamp(3rem, 10vw, 6rem);
    letter-spacing: -0.04em;
    margin: 0;
    background: linear-gradient(135deg, var(--color-text), var(--color-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

header p {
    font-size: 1.25rem;
    margin-top: 8px;
}