.rgb-grid {
    display: grid;
    gap: 24px;
}

.rgb-grid.columns-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.rgb-grid.columns-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.rgb-grid.columns-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.rgb-grid.columns-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.rgb-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.rgb-card__image-link,
.rgb-card__image-link img {
    display: block;
    width: 100%;
}

.rgb-card__image-link img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.rgb-card__placeholder {
    aspect-ratio: 4 / 3;
    background: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    font-size: 14px;
}

.rgb-card__content {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    flex: 1;
}

.rgb-card__title {
    margin: 0;
    font-size: 1.2rem;
    line-height: 1.3;
}

.rgb-card__title a {
    color: inherit;
    text-decoration: none;
}

.rgb-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 14px;
    color: #374151;
}

.rgb-card__meta span {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 999px;
    padding: 6px 10px;
}

.rgb-card__button {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    background: #111827;
    color: #ffffff;
}

@media (max-width: 1024px) {
    .rgb-grid.columns-4,
    .rgb-grid.columns-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .rgb-grid.columns-4,
    .rgb-grid.columns-3,
    .rgb-grid.columns-2,
    .rgb-grid.columns-1 {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }
}