/* ==========================================================================
   SPONSORS.CSS - ACM Collective Intelligence 2026
   Styles for sponsor grid matrices and dynamic logo sizing.
   ========================================================================== */

.sponsor-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 4rem;
    padding: 1rem 0;
}

/* Clean, Boxless Logo Wrapper */
.logo-link {
    display: block;
    transition: transform 0.2s ease;
}

.logo-link:hover {
    transform: scale(1.03);
}

.logo-link img {
    width: auto; 
    max-width: 100%; 
    object-fit: contain;
    display: block;
}

/* Logo Height normalization constraints */
.logo-ifm img { height: 90px; }
.logo-aij img { height: 90px; }
.logo-psu img { height: 100px; }
.logo-sigchi img { height: 60px; } 
.logo-sigweb img { height: 90px; }

.placeholder-text {
    font-size: 1.1rem;
    color: #666666;
    font-style: italic;
    text-align: center;
    width: 100%;
}

@media (max-width: 768px) {
    .sponsor-grid {
        gap: 2.5rem;
    }
}