.doc-grid,
.docs-hub-grid {
    --doc-tile-min-width: 250px;
    --doc-tile-max-width: 380px;
    --doc-tile-gap: 14px;
    --doc-tile-margin-top: 18px;

    display: grid;
    grid-template-columns: repeat(3, minmax(var(--doc-tile-min-width), var(--doc-tile-max-width)));
    justify-content: start;
    gap: var(--doc-tile-gap);
    margin-top: var(--doc-tile-margin-top);
}

.doc-tile,
.docs-hub-tile {
    --tile-outline-color: #60a5fa;
    background: var(--bg-primary, #fff);
    border: 1px solid var(--tile-outline-color);
    border-top: 1.5px solid var(--tile-outline-color);
    border-radius: var(--radius-lg);
    padding: 18px;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.05);
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    overflow: hidden;
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.doc-tile::before,
.docs-hub-tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1.5px;
    background: var(--tile-outline-color);
}

.doc-tile:hover,
.doc-tile:focus-within,
.docs-hub-tile:hover,
.docs-hub-tile:focus-within {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
    border-color: var(--tile-outline-color);
}

.doc-tile h3,
.docs-hub-tile h3 {
    margin: 0;
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.35;
}

.doc-tile p,
.docs-hub-tile p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.45;
}

.doc-tile .btn,
.docs-hub-tile .btn {
    margin-top: auto;
    align-self: flex-end;
    background: var(--tile-outline-color);
    border-color: var(--tile-outline-color);
}

.doc-tile .tile-actions,
.doc-tile .quick-link-actions,
.docs-hub-tile .tile-actions,
.docs-hub-tile .quick-link-actions {
    margin-top: auto;
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.doc-tile .tile-actions .btn,
.doc-tile .quick-link-actions .btn,
.docs-hub-tile .tile-actions .btn,
.docs-hub-tile .quick-link-actions .btn {
    margin-top: 0;
}

.doc-tile .btn:hover,
.docs-hub-tile .btn:hover {
    background: var(--tile-outline-color);
    border-color: var(--tile-outline-color);
    filter: brightness(0.92);
}

@media (max-width: 1200px) {
    .doc-grid,
    .docs-hub-grid {
        grid-template-columns: repeat(2, minmax(var(--doc-tile-min-width), var(--doc-tile-max-width)));
    }
}

@media (max-width: 760px) {
    .doc-grid,
    .docs-hub-grid {
        grid-template-columns: minmax(0, var(--doc-tile-max-width));
        --doc-tile-max-width: 100%;
    }
}