.sertifikat {
    padding: 10rem 0;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.certificate-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-primary);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.stat-label {
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.stat-progress {
    height: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    overflow: hidden;
}

.stat-progress .progress-bar {
    height: 100%;
    background: var(--accent-primary);
    width: 0;
    transition: width 1.5s ease-out;
}


.certificates-section {
    margin-bottom: 5rem;
}

.section-subtitle {
    font-size: 2.4rem;
    margin-bottom: 2.5rem;
    color: var(--accent-primary);
    position: relative;
    display: inline-block;
}

.section-subtitle::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 50%;
    height: 0.3rem;
    background: var(--accent-primary);
    border-radius: 1rem;
}


.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.featured-grid {
    grid-template-columns: repeat(auto-fill, minmax(35rem, 1fr));
}


.certificate-item {
    height: 25rem;
    perspective: 1500px;
}

.certificate-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.certificate-item:hover .certificate-inner {
    transform: rotateY(180deg);
}

.certificate-front, .certificate-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 1.5rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    text-align: center;
}

.certificate-front {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.certificate-back {
    background: linear-gradient(135deg, #112240, #0a192f);
    border: 1px solid rgba(0, 204, 153, 0.1);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    transform: rotateY(180deg);
    padding-top: 0;
}


.certificate-featured {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-primary);
    color: var(--bg-primary);
    padding: 0.4rem 1rem;
    border-radius: 2rem;
    font-size: 1.2rem;
    font-weight: 500;
    z-index: 2;
    box-shadow: 0 3px 10px rgba(0, 204, 153, 0.2);
}

.certificate-icon {
    font-size: 4rem;
    color: var(--accent-primary);
    margin-bottom: 2rem;
}

.certificate-title {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.certificate-issuer {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--accent-primary);
}

.certificate-date {
    font-size: 1.3rem;
    color: var(--text-secondary);
}


.certificate-image {
    width: 100%;
    height: 12rem;
    margin-bottom: 1.5rem;
    overflow: hidden;
    border-radius: 1rem;
}

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

.certificate-back:hover .certificate-image img {
    transform: scale(1.05);
}

.certificate-description {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.certificate-actions {
    width: 100%;
    display: flex;
    justify-content: space-around;
}

.certificate-link, .view-details-btn {
    padding: 0.8rem 1.5rem;
    border-radius: 3rem;
    font-size: 1.3rem;
    transition: all 0.3s ease;
}

.certificate-link {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
}

.certificate-link:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
}

.view-details-btn {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    cursor: pointer;
}

.view-details-btn:hover {
    background: rgba(0, 204, 153, 0.1);
    transform: translateY(-2px);
}


.certificates-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.certificates-filters {
    flex-grow: 1;
    max-width: 70%;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.cert-filter-btn {
    padding: 0.8rem 1.5rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 3rem;
    font-size: 1.4rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cert-filter-btn:hover, .cert-filter-btn.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.certificates-search {
    position: relative;
    width: 100%;
    max-width: 30rem;
}

.certificates-search input {
    width: 100%;
    padding: 1rem 1.5rem;
    padding-right: 4.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 3rem;
    color: var(--text-primary);
    font-size: 1.4rem;
}

.certificates-search input:focus {
    border-color: var(--accent-primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 204, 153, 0.1);
}

.certificates-search button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: var(--accent-primary);
    color: var(--bg-primary);
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.certificates-search button:hover {
    background: var(--accent-secondary);
}


.certificates-pagination {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 4rem;
}

.pagination-btn {
    width: 4rem;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pagination-btn.active, .pagination-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.pagination-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-ellipsis {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    font-size: 1.4rem;
    padding: 0 1rem;
}


.certificates-expandable {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.certificates-expandable.expanded {
    max-height: 500rem;
}


.view-all-wrapper {
    margin-top: 3rem;
    display: flex;
    justify-content: center;
}

.view-all-btn {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    border-radius: 3rem;
    padding: 1rem 2rem;
    font-size: 1.6rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.view-all-btn:hover {
    background: rgba(0, 204, 153, 0.1);
    transform: translateY(-2px);
}

.view-less-btn-text, .view-less-btn-icon {
    display: none;
}

.view-all-btn.expanded .view-all-btn-text,
.view-all-btn.expanded .view-all-btn-icon {
    display: none;
}

.view-all-btn.expanded .view-less-btn-text,
.view-all-btn.expanded .view-less-btn-icon {
    display: inline-block;
}


.no-certificates {
    grid-column: 1 / -1;
    text-align: center;
    padding: 5rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 1rem;
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

.no-certificates i {
    font-size: 5rem;
    color: var(--accent-primary);
    opacity: 0.5;
    margin-bottom: 2rem;
}

.no-certificates p {
    font-size: 1.8rem;
    color: var(--text-secondary);
}


.certificate-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 25, 47, 0.95);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-modal.show {
    opacity: 1;
}

.certificate-modal-content {
    background: linear-gradient(135deg, #112240, #0a192f);
    border-radius: 1.5rem;
    width: 100%;
    max-width: 80rem;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.certificate-modal.show .certificate-modal-content {
    transform: scale(1);
}

.certificate-modal-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 3rem;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 2;
    transition: all 0.3s ease;
}

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

.certificate-modal-header {
    padding: 3rem 4rem;
    background: linear-gradient(90deg, rgba(0, 204, 153, 0.1), transparent);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.certificate-modal-header h2 {
    font-size: 2.4rem;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
}

.certificate-modal-header-details {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.certificate-modal-header-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.4rem;
    color: var(--text-secondary);
}

.certificate-modal-header-item i {
    color: var(--accent-primary);
}

.certificate-modal-body {
    padding: 3rem 4rem;
}

.certificate-modal-main {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.certificate-modal-image-wrapper {
    flex: 1;
    min-width: 30rem;
    position: relative;
    cursor: pointer;
}

.certificate-modal-image {
    width: 100%;
    height: 20rem;
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
}

.certificate-modal-image:hover {
    transform: scale(1.02);
}

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

.certificate-modal-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-primary);
    color: var(--bg-primary);
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 1.3rem;
}

.certificate-modal-info {
    flex: 1.5;
    min-width: 30rem;
}

.certificate-modal-section {
    margin-bottom: 2.5rem;
}

.certificate-modal-section-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    color: var(--text-primary);
}

.certificate-modal-section-title i {
    color: var(--accent-primary);
}

.certificate-modal-description {
    font-size: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.certificate-modal-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.certificate-modal-category {
    background: rgba(0, 204, 153, 0.05);
    color: var(--accent-primary);
    padding: 0.6rem 1.5rem;
    border-radius: 2rem;
    font-size: 1.3rem;
    transition: all 0.3s ease;
}

.certificate-modal-category:hover {
    background: rgba(0, 204, 153, 0.1);
    transform: translateY(-2px);
}

.certificate-modal-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2.5rem;
}

.certificate-modal-details-item-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.certificate-modal-details-content {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.certificate-modal-actions {
    padding: 2.5rem 4rem;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.certificate-modal-btn {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem 2rem;
    border-radius: 3rem;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.certificate-modal-btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
}

.certificate-modal-btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-3px);
}

.certificate-modal-btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.certificate-modal-btn-secondary:hover {
    background: rgba(0, 204, 153, 0.1);
    transform: translateY(-3px);
}


.certificate-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1100;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-lightbox.show {
    opacity: 1;
}

.certificate-lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 3.5rem;
    cursor: pointer;
    z-index: 1101;
    transition: all 0.3s ease;
}

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

.certificate-lightbox-content {
    max-width: 90vw;
    max-height: 80vh;
    overflow: hidden;
    position: relative;
}

.certificate-lightbox-image {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    transition: transform 0.3s ease;
    cursor: move;
}

.certificate-lightbox-image.zoomed {
    cursor: grabbing;
}

.certificate-lightbox-controls {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.certificate-lightbox-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: none;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.certificate-lightbox-btn:hover {
    background: rgba(0, 204, 153, 0.5);
    color: #fff;
}

.certificate-lightbox-info {
    margin-top: 1.5rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.4rem;
    text-align: center;
}


.share-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.share-modal.show {
    opacity: 1;
    visibility: visible;
}

.share-modal-content {
    background: linear-gradient(135deg, #112240, #0a192f);
    border-radius: 1.5rem;
    width: 90%;
    max-width: 50rem;
    padding: 3rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.share-modal.show .share-modal-content {
    transform: translateY(0);
}

.share-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.share-modal-header h3 {
    font-size: 2.2rem;
    color: var(--accent-primary);
}

.share-modal-close {
    font-size: 2.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.share-modal-body p {
    font-size: 1.6rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.share-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.share-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
    border-radius: 1rem;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.share-option i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.share-option span {
    font-size: 1.4rem;
}

.share-option.facebook {
    background: rgba(59, 89, 152, 0.2);
    color: #3b5998;
}

.share-option.twitter {
    background: rgba(29, 161, 242, 0.2);
    color: #1da1f2;
}

.share-option.linkedin {
    background: rgba(0, 119, 181, 0.2);
    color: #0077b5;
}

.share-option.whatsapp {
    background: rgba(37, 211, 102, 0.2);
    color: #25d366;
}

.share-option.telegram {
    background: rgba(0, 136, 204, 0.2);
    color: #0088cc;
}

.share-option.email {
    background: rgba(255, 193, 7, 0.2);
    color: #ffc107;
}

.share-option.copy {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: none;
    cursor: pointer;
}

.share-option:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.share-option.copied {
    background: rgba(0, 204, 153, 0.3);
    color: var(--accent-primary);
}


#toast-container {
    position: fixed;
    bottom: 3rem;
    right: 3rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
}

.toast-message {
    background: var(--accent-primary);
    color: var(--bg-primary);
    padding: 1.2rem 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    font-size: 1.5rem;
    max-width: 30rem;
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.3s ease;
}

.toast-message.show {
    opacity: 1;
    transform: translateX(0);
}


.download-success-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1300;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.download-success-modal.show {
    opacity: 1;
    visibility: visible;
}

.download-success-content {
    background: linear-gradient(135deg, #112240, #0a192f);
    border-radius: 1.5rem;
    width: 90%;
    max-width: 40rem;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 204, 153, 0.1);
    transform: scale(0.9);
    transition: all 0.3s ease;
}

.download-success-modal.show .download-success-content {
    transform: scale(1);
}

.download-success-content i {
    font-size: 6rem;
    color: #4caf50;
    margin-bottom: 2rem;
}

.download-success-content h3 {
    font-size: 2.4rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.download-success-content p {
    font-size: 1.6rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.download-success-close {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
    padding: 1.2rem 3rem;
    border-radius: 3rem;
    font-size: 1.6rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.download-success-close:hover {
    background: var(--accent-secondary);
    transform: translateY(-3px);
}


@media screen and (max-width: 992px) {
    .certificate-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .certificates-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .certificates-filters {
        max-width: 100%;
    }
    
    .certificates-search {
        max-width: 100%;
    }
    
    .certificates-grid {
        grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr));
    }
    
    .featured-grid {
        grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
    }
    
    .certificate-modal-main {
        flex-direction: column;
    }
    
    .certificate-modal-details-grid {
        grid-template-columns: 1fr;
    }
    
    .certificate-modal-actions {
        justify-content: center;
    }
}

@media screen and (max-width: 768px) {
    .certificate-stats {
        grid-template-columns: 1fr;
    }
    
    .share-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 576px) {
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .certificate-modal-header, 
    .certificate-modal-body,
    .certificate-modal-actions {
        padding: 2rem;
    }
    
    .share-options {
        grid-template-columns: 1fr;
    }
    
    .pagination-btn {
        width: 3.5rem;
        height: 3.5rem;
    }
}