.sert-gallery {
    padding: 60px 0;
}

.sert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.sert-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 3px solid #FF6B35;
    background: #fff;
    padding: 12px;
}

.sert-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(255, 107, 53, 0.2);
    border-color: #FF8E53;
}

.sert-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.sert-item:hover .sert-image {
    transform: scale(1.05);
}

.sert-overlay {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;
    bottom: 12px;
    background: rgba(255, 107, 53, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    border-radius: 10px;
}

.sert-item:hover .sert-overlay {
    opacity: 1;
    visibility: visible;
}

.sert-icon {
    width: 60px;
    height: 60px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FF6B35;
    font-size: 24px;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.sert-item:hover .sert-icon {
    transform: scale(1);
}

.sert-icon:hover {
    background: #FF6B35;
    color: white;
    transform: scale(1.1);
}

/* Адаптивность */
@media (max-width: 1024px) {
    .sert-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .sert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .sert-image {
        height: 200px;
    }

    .sert-item {
        padding: 8px;
        border-width: 2px;
    }

    .sert-overlay {
        top: 8px;
        left: 8px;
        right: 8px;
        bottom: 8px;
    }

    .sert-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .sert-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .sert-image {
        height: 250px;
    }

    .sert-gallery {
        padding: 40px 0;
    }
}