/* ========================================
   CERTIFICATES SECTION STYLES
======================================== */

.certificates {
    background-color: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

/* Filter Buttons */
.certificates-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

/* Grid Layout */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-6);
    position: relative;
    min-height: 200px;
}

/* Certificate Card */
.certificate-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s forwards;
}

.certificate-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl), 0 0 20px rgba(100, 244, 172, 0.1);
    border-color: var(--primary-subtle);
}

.certificate-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    cursor: pointer;
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.certificate-card:hover .certificate-image img {
    transform: scale(1.1);
}

.certificate-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 15, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(2px);
}

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

.view-btn {
    background: var(--primary);
    color: var(--bg-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.certificate-card:hover .view-btn {
    transform: scale(1);
    transition-delay: 0.1s;
}

.certificate-content {
    padding: var(--space-5);
    border-top: 1px solid var(--border-color);
}

.certificate-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.certificate-issuer {
    font-size: var(--text-sm);
    color: var(--primary);
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: 8px;
}

.certificate-issuer::before {
    content: '';
    width: 6px;
    height: 6px;
    background-color: var(--primary);
    border-radius: 50%;
    display: inline-block;
}

/* Lightbox Modal */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(10px);
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 85vh;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.lightbox.active .lightbox-content {
    transform: scale(1);
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--radius-md);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

.lightbox-info {
    position: absolute;
    bottom: -60px;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--text-primary);
}

.lightbox-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: 4px;
}

.lightbox-issuer {
    color: var(--primary);
    font-family: var(--font-mono);
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 30px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    z-index: 10;
    transition: transform 0.3s ease, color 0.3s ease;
}

.lightbox-close svg {
    width: 40px;
    height: 40px;
}

.lightbox-close:hover {
    color: var(--primary);
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.lightbox-nav:hover {
    background: var(--primary);
    color: var(--bg-primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

/* Loader Styles */
.certificates-loader {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--text-secondary);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .certificates-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .lightbox-nav {
        width: 40px;
        height: 40px;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    .filter-btn {
        font-size: var(--text-xs);
        padding: 0.5rem 1rem;
    }
}