:root {
    --bg: #f6f4f1;
    --card: #ffffff;
    --text: #1d1d1f;
    --muted: #6b6b70;
    --accent: #e8442e;
    --border: #e4e0db;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #141416;
        --card: #1f1f22;
        --text: #f2f2f3;
        --muted: #a0a0a6;
        --accent: #ff6a52;
        --border: #2e2e33;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
}

/* ---------- HEADER ---------- */

header {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 24px 48px;
}

.eyebrow {
    margin: 0;
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h1 {
    margin: 8px 0 12px;
    font-size: clamp(40px, 8vw, 72px);
    line-height: 1;
    letter-spacing: -0.02em;
}

.intro {
    margin: 0;
    max-width: 520px;
    color: var(--muted);
    font-size: 18px;
}

/* ---------- PROJECT CARDS ---------- */

.projects {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px 64px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.card {
    display: flex;
    flex-direction: column;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    color: inherit;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover,
.card:focus-visible {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.card:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    background-color: var(--border);
    overflow: hidden;
}

.thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}

.card:hover .thumb img {
    transform: scale(1.04);
}

/* the museum page is 800px wide, so shrink the iframe to fit the card */
.museum-thumb {
    background-color: #9a9592;
}

.museum-thumb iframe {
    position: absolute;
    top: 0;
    left: 50%;
    width: 900px;
    height: 760px;
    border: 0;
    transform: translateX(-50%) scale(0.4);
    transform-origin: top center;
    pointer-events: none;
}

.info {
    padding: 20px 22px 24px;
}

.number {
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.info h2 {
    margin: 4px 0 8px;
    font-size: 22px;
}

.info p {
    margin: 0;
    color: var(--muted);
}

/* ---------- FOOTER ---------- */

footer {
    width: calc(100% - 48px);
    max-width: 1052px;
    margin: 0 auto;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 14px;
}

footer p {
    margin: 0;
}

@media (prefers-reduced-motion: reduce) {
    .card,
    .thumb img {
        transition: none;
    }
}