.builds {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1.25rem, 3vw, 1.75rem);
}

.build-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-elevated);
    padding: clamp(1.5rem, 3vw, 2rem);
    display: flex;
    flex-direction: column;
    transition: border-color var(--dur-sm) var(--ease), transform var(--dur-sm) var(--ease);
}

.build-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-3px);
}

.build-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.build-index {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
}

.build-links {
    display: flex;
    gap: 0.5rem;
}

.build-card h3 {
    font-size: 1.2rem;
    margin-top: 0.7rem;
}

.build-problem {
    margin-top: 0.9rem;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    letter-spacing: 0.01em;
}

.build-desc {
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.96rem;
    flex-grow: 1;
}

.build-decisions {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.build-decisions .lbl {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
    display: block;
}

.build-decisions ul li {
    position: relative;
    padding-left: 1.1rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

.build-decisions ul li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.build-card .tag-row {
    margin-top: 1.2rem;
}

/* earlier work */
.earlier-intro {
    color: var(--text-tertiary);
    font-size: 0.88rem;
    margin-top: 1rem;
    max-width: 60ch;
}

.earlier-toggle {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-top: clamp(2.5rem, 5vw, 3.5rem);
    color: var(--text-secondary);
    font-size: 0.92rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.8rem 1.1rem;
    width: 100%;
}

.earlier-toggle:hover {
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.earlier-toggle .chev {
    margin-left: auto;
    transition: transform var(--dur-sm) var(--ease);
}

.earlier-toggle[aria-expanded="true"] .chev {
    transform: rotate(180deg);
}

.earlier-panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--dur-md) var(--ease);
}

.earlier-panel.is-open {
    grid-template-rows: 1fr;
}

.earlier-panel-inner {
    overflow: hidden;
}

.earlier-grid {
    margin-top: 1.25rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.earlier-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-elevated);
}

.earlier-card img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    filter: grayscale(0.3);
}

.earlier-card-body {
    padding: 0.9rem 1rem;
}

.earlier-card h4 {
    font-size: 0.88rem;
    font-weight: 600;
}

.earlier-card .stack {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-tertiary);
    margin-top: 0.35rem;
}

.earlier-card .earlier-links {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.6rem;
}

.earlier-card .earlier-links a {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.earlier-card .earlier-links a:hover {
    color: var(--accent);
}

@media (max-width: 780px) {
    .builds {
        grid-template-columns: 1fr;
    }
}