/* ═══════════════════════════════════════════════════
   Certifications CNIL
═══════════════════════════════════════════════════ */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.certification-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

.certification-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(10,180,198,.3), transparent);
    opacity: 0;
    transition: opacity .3s;
}

.certification-item:hover {
    transform: translateY(-5px);
    border-color: rgba(10,180,198,.22);
    box-shadow: 0 12px 40px rgba(0,0,0,.4);
}

.certification-item:hover::before {
    opacity: 1;
}

.pdf-preview {
    width: 100%;
    height: 220px;
    background: rgba(240,237,232,.02);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.pdf-preview iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    opacity: .9;
}

.certification-info {
    padding: var(--spacing-sm);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.certification-info h4 {
    font-family: var(--f-display);
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--fg);
    margin-bottom: .4rem;
}

.certification-info p {
    color: var(--muted);
    font-size: .88rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    flex-grow: 1;
}

.certification-actions {
    display: flex;
    gap: .5rem;
    justify-content: stretch;
}

.certification-actions .btn {
    flex: 1;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .3rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .certifications-grid { grid-template-columns: 1fr; }
    .pdf-preview { height: 180px; }
}