/* ===== LEARNING PAGE STYLES ===== */

/* Page background */
body {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* Main content */
.main-content {
    padding-top: 100px;
}

/* Certificates section */
.certificates-section {
    padding: 60px 0;
}

/* Section styles moved to styles.css for consistency */

/* Certificates grid */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.certificate-card {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.certificate-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.certificate-image-container {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.certificate-image-container img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.certificate-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-overlay i {
    color: white;
    font-size: 2rem;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

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

.certificate-card:hover .certificate-overlay i {
    transform: scale(1);
}

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

/* Модальное окно */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    box-sizing: border-box;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    max-width: calc(100vw - 80px);
    max-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    height: fit-content;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.8rem;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 1);
    transform: scale(1.1);
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-nav:hover:not(:disabled) {
    background: rgba(0, 0, 0, 0.9);
    transform: translateY(-50%) scale(1.1);
}

.modal-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.modal-prev {
    left: 20px;
}

.modal-next {
    right: 20px;
}

.modal-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 10;
}

.modal-content img {
    max-width: calc(100vw - 120px);
    max-height: calc(100vh - 120px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* Footer transparent background */
.footer {
    background: transparent !important;
    backdrop-filter: blur(10px);
}

/* Responsive design */

/* Планшеты (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .main-content {
        padding-top: 90px;
    }
    
    .certificates-section {
        padding: 60px 0;
    }
    
    /* Section styles handled by styles.css */
    
    .certificates-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xl);
        padding: 0 30px;
    }
    
    .certificate-card {
        padding: 20px;
    }
    
    .certificate-image {
        border-radius: 20px;
    }
    
    .certificate-overlay {
        border-radius: 20px;
    }
    
    .certificate-overlay h3 {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-sm);
    }
    
    .certificate-overlay p {
        font-size: var(--font-size-sm);
        line-height: 1.5;
    }
}

/* Планшеты и мобильные (до 768px) */
@media (max-width: 768px) {
    .main-content {
        padding-top: 80px;
    }
    
    .certificates-section {
        padding: 50px 0;
    }
    
    /* Section styles handled by styles.css */
    
    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
        padding: 0 20px;
    }
    
    .certificate-card {
        padding: 0;
    }
    
    .certificate-image {
        border-radius: 18px;
    }
    
    .certificate-overlay {
        border-radius: 18px;
        padding: var(--spacing-md);
    }
    
    .certificate-overlay h3 {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xs);
        line-height: 1.3;
    }
    
    .certificate-overlay p {
        font-size: var(--font-size-xs);
        line-height: 1.4;
    }
    
    /* Модальное окно для планшетов */
    .image-modal .modal-content {
        margin: 20px;
        max-width: calc(100vw - 40px);
        max-height: calc(100vh - 40px);
    }
    
    .image-modal .modal-content img {
        max-width: calc(100vw - 80px);
        max-height: calc(100vh - 80px);
        border-radius: var(--radius-lg);
    }
    
    .image-modal .modal-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }
    
    .image-modal .modal-nav {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    .image-modal .modal-prev {
        left: 10px;
    }
    
    .image-modal .modal-next {
        right: 10px;
    }
    
    .image-modal .modal-counter {
        bottom: 10px;
        font-size: 0.8rem;
        padding: 6px 12px;
        border-radius: 16px;
    }
}

/* Мобильные устройства (до 480px) */
@media (max-width: 480px) {
    .main-content {
        padding-top: 70px;
    }
    
    .certificates-section {
        padding: 30px 0;
    }
    
    /* Section styles handled by styles.css */
    
    .certificates-grid {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
        padding: 0;
    }
    
    .certificate-card {
        padding: 0;
    }
    
    .certificate-image {
        border-radius: 16px;
    }
    
    .certificate-overlay {
        border-radius: 16px;
        padding: var(--spacing-sm);
    }
    
    .certificate-overlay h3 {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
        line-height: 1.3;
    }
    
    .certificate-overlay p {
        font-size: 11px;
        line-height: 1.4;
    }
    
    /* Модальное окно для мобильных */
    .image-modal {
        padding: 10px;
    }
    
    .image-modal .modal-content {
        max-width: calc(100vw - 20px);
        max-height: calc(100vh - 20px);
    }
    
    .image-modal .modal-content img {
        max-width: calc(100vw - 40px);
        max-height: calc(100vh - 40px);
        border-radius: var(--radius-md);
    }
    
    .image-modal .modal-close {
        top: 5px;
        right: 5px;
        width: 32px;
        height: 32px;
        font-size: 1.1rem;
    }
    
    .image-modal .modal-nav {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
    
    .image-modal .modal-prev {
        left: 5px;
    }
    
    .image-modal .modal-next {
        right: 5px;
    }
    
    .image-modal .modal-counter {
        bottom: 5px;
        font-size: 0.7rem;
        padding: 4px 8px;
        border-radius: 12px;
    }
    
    /* Убираем все hover эффекты для мобильных */
    .certificate-card:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
    }
    
    .certificate-card:hover .certificate-overlay {
        opacity: 0;
    }
    
    .certificate-card:hover .certificate-overlay i {
        transform: scale(0.8);
    }
    
    .certificate-card:hover img {
        transform: none;
    }
    
    .modal-close:hover {
        background: rgba(0, 0, 0, 0.8);
        transform: none;
    }
    
    .modal-nav:hover:not(:disabled) {
        background: rgba(0, 0, 0, 0.7);
        transform: translateY(-50%);
    }
}