/* Certificates - modern responsive grid */
.all-certificates {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    padding-bottom: 30px;
}

/* Ensure overlay positions relative to the card and doesn't spill */
.certificate-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
    cursor: pointer;
}

.certificate-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 999px;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
    box-shadow: 0 6px 18px rgba(255, 102, 0, .35);
}

.certificate-preview {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.certificate-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 16px;
}

.certificate-title {
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    line-height: 1.3;
}

.certificate-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: linear-gradient(90deg, #ff6600, #ff8740);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 999px;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
    box-shadow: 0 6px 18px rgba(255, 102, 0, .35);
}

.certificate-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(255, 102, 0, .45);
}

.certificate-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, .0), rgba(0, 0, 0, .65));
    opacity: 0;
    pointer-events: none;
    /* don't block clicks when hidden */
    display: flex;
    align-items: flex-end;
    padding: 16px;
    transition: opacity .25s ease;
    z-index: 2;
}

.certificate-card:hover .certificate-overlay {
    opacity: 1;
    pointer-events: auto;
}

/* Mobile/touch: show overlay by default so links are accessible */
@media (hover: none) {
    .certificate-overlay {
        opacity: 1;
        pointer-events: auto;
    }
}