.tekiner-sertifikalar-page {
    width: 100%;
    max-width: 100%;
    
}

.tekiner-sertifikalar-page .sertifikalar-wrap {
    padding-top: 100px;
    padding-bottom: 100px;
    overflow: hidden;
}

.tekiner-sertifikalar-page .sertifikalar-mask-wrap {
    overflow-x: hidden;
}

.sertifikalar-grid {
    display: grid;
    grid-template-columns: repeat( auto-fill, minmax( 280px, 1fr ) );
    gap: 1.5rem;
    align-items: stretch;
}

.sertifika-kutu {
    background: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba( 0, 0, 0, 0.06 );
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.sertifika-kutu:hover {
    box-shadow: 0 6px 20px rgba( 0, 0, 0, 0.1 );
    border-color: #ccc;
}

.sertifika-kutu-gorsel {
    aspect-ratio: 3/4;
    position: relative;
    background: #f5f5f5;
    overflow: hidden;
    flex-shrink: 0;
    cursor: pointer;
}

.sertifika-kutu-gorsel img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.sertifika-kutu-icerik {
    padding: 1.25rem 1.25rem 1.5rem;
    flex: 1;
}

.sertifika-kutu-baslik {
    margin: 0 0 0.5rem 0;
    font-size: 1.125rem;
    font-weight: 700;
    color: #222;
    line-height: 1.35;
}

.sertifika-kutu-aciklama {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: #555;
    margin: 0;
}

.sertifika-kutu-aciklama p {
    margin: 0 0 0.5rem 0;
}

.sertifika-kutu-aciklama p:last-child {
    margin-bottom: 0;
}

.sertifikalar-bos {
    padding: 2rem 0;
    color: #666;
    font-size: 1rem;
}

.sertifika-lightbox {
    position: fixed;
    inset: 0;
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: sertifika-lightbox-fade 0.25s ease;
}

.sertifika-lightbox[hidden] {
    display: none !important;
}

@keyframes sertifika-lightbox-fade {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.sertifika-lightbox-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    cursor: pointer;
}

.sertifika-lightbox-content {
    position: relative;
    z-index: 2;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sertifika-lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.sertifika-lightbox-prev,
.sertifika-lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background 0.2s ease, transform 0.2s ease;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.sertifika-lightbox-prev:hover,
.sertifika-lightbox-next:hover {
    background: rgba(255, 255, 255, 0.28);
    transform: translateY(-50%) scale(1.05);
}

.sertifika-lightbox-prev:active,
.sertifika-lightbox-next:active {
    transform: translateY(-50%) scale(0.98);
}

.sertifika-lightbox-prev {
    left: 24px;
}

.sertifika-lightbox-next {
    right: 24px;
}

.sertifika-lightbox-prev svg,
.sertifika-lightbox-next svg {
    flex-shrink: 0;
}

.sertifika-lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 3;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background 0.2s ease, transform 0.2s ease;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.sertifika-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.sertifika-lightbox-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
}

@media ( max-width: 768px ) {
    .sertifika-lightbox-prev { left: 12px; width: 44px; height: 44px; }
    .sertifika-lightbox-next { right: 12px; width: 44px; height: 44px; }
    .sertifika-lightbox-close { top: 12px; right: 12px; width: 40px; height: 40px; }
    .sertifika-lightbox-content img { max-height: 80vh; }
    .tekiner-sertifikalar-page #sertifikalar-grid .sertifika-kutu {
        width: 240px !important;
        min-width: 240px !important;
    }
    .sertifika-kutu-gorsel {
        aspect-ratio: 3/4;
    }
}