/* Articles Listing Page Styles */

.articles-header {
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border);
}

.container-articles {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.articles-page-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
    letter-spacing: -0.02em;
}

.articles-page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Articles Grid Section */
.articles-section {
    padding: 4rem 0 6rem;
    background-color: var(--bg-primary);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

/* Article Card */
.article-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
}

.article-card-image {
    position: relative;
    width: 100%;
    height: 240px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--accent-light) 0%, var(--bg-tertiary) 100%);
}

.article-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.article-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--accent);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-card-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.article-date::before {
    content: "";
}

.article-reading-time::before {
    content: "";
}

.article-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.article-card-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-card-title a:hover {
    color: var(--accent);
}

.article-card-excerpt {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    font-size: 0.75rem;
    color: var(--accent);
    background-color: var(--accent-light);
    padding: 0.4rem 0.8rem;
    border-radius: 16px;
    font-weight: 500;
    border: 1px solid var(--accent);
    transition: all 0.3s ease;
}

.tag:hover {
    background-color: var(--accent);
    color: white;
}

.article-read-more {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
    margin-top: auto;
}

.article-read-more:hover {
    gap: 0.5rem;
}

/* Placeholder Card */
.article-card-placeholder {
    opacity: 0.7;
    cursor: default;
}

.article-card-placeholder:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border);
}

.placeholder-image {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

.placeholder-icon {
    width: 60px;
    height: 60px;
    color: var(--text-tertiary);
}

.placeholder-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.placeholder-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.articles-cta {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.cta-box {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: 3rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 16px;
}

.cta-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.cta-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid var(--accent);
}

.cta-button:hover {
    background-color: var(--text-primary);
    border-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.cta-button-secondary {
    background-color: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}

.cta-button-secondary:hover {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .articles-header {
        padding: 6rem 1.5rem 3rem;
    }

    .articles-page-title {
        font-size: 2rem;
        line-height: 1.2;
    }

    .articles-page-subtitle {
        font-size: 1rem;
        line-height: 1.6;
    }

    .articles-section {
        padding: 3rem 0 5rem;
    }

    .articles-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 1.5rem;
    }

    .article-card-image {
        height: 200px;
    }

    .article-card-content {
        padding: 1.5rem;
    }

    .article-card-title {
        font-size: 1.3rem;
        line-height: 1.3;
    }

    .article-card-title a {
        /* Ensure touch targets are appropriate */
        display: block;
        padding: 0.25rem 0;
    }

    .article-card-excerpt {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        font-size: 0.85rem;
    }

    .article-read-more {
        padding: 0.5rem 0;
        min-height: 44px; /* Touch target size */
        display: inline-flex;
        align-items: center;
    }

    .cta-box {
        padding: 2rem 1.5rem;
    }

    .cta-title {
        font-size: 1.5rem;
    }

    .cta-description {
        font-size: 1rem;
        line-height: 1.6;
    }

    .cta-links {
        flex-direction: column;
        gap: 0.75rem;
    }

    .cta-button {
        width: 100%;
        justify-content: center;
        min-height: 48px; /* Better touch target */
        padding: 0.875rem 1.5rem;
    }

    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .articles-header {
        padding: 5rem 1rem 2rem;
    }

    .container-articles {
        padding: 0 1rem;
    }

    .articles-page-title {
        font-size: 1.75rem;
        line-height: 1.2;
        word-wrap: break-word;
    }

    .articles-page-subtitle {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .articles-section {
        padding: 2.5rem 0 4rem;
    }

    .articles-grid {
        gap: 1.75rem;
    }

    .article-card {
        border-radius: 12px;
    }

    .article-card-image {
        height: 180px;
    }

    .article-card-content {
        padding: 1.25rem;
    }

    .article-meta {
        font-size: 0.8rem;
        gap: 0.4rem;
    }

    .article-card-title {
        font-size: 1.2rem;
        line-height: 1.3;
        margin-bottom: 0.75rem;
    }

    .article-card-excerpt {
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: 1rem;
    }

    .article-tags {
        gap: 0.4rem;
        margin-bottom: 1rem;
    }

    .tag {
        font-size: 0.7rem;
        padding: 0.35rem 0.7rem;
    }

    .article-read-more {
        font-size: 0.9rem;
    }

    .placeholder-title {
        font-size: 1.15rem;
    }

    .placeholder-text {
        font-size: 0.9rem;
    }

    .placeholder-icon {
        width: 50px;
        height: 50px;
    }

    .cta-box {
        padding: 1.5rem 1rem;
        border-radius: 12px;
    }

    .cta-title {
        font-size: 1.35rem;
        line-height: 1.3;
        margin-bottom: 0.75rem;
    }

    .cta-description {
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 1.5rem;
    }

    .cta-button {
        font-size: 0.95rem;
        padding: 0.75rem 1.25rem;
        min-height: 48px;
    }

    .cta-button svg {
        width: 18px;
        height: 18px;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }

    .back-to-top svg {
        width: 18px;
        height: 18px;
    }
}

/* Animation for cards on load */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-card {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.article-card:nth-child(1) {
    animation-delay: 0.1s;
}

.article-card:nth-child(2) {
    animation-delay: 0.2s;
}

.article-card:nth-child(3) {
    animation-delay: 0.3s;
}

.article-card:nth-child(4) {
    animation-delay: 0.4s;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
}