/* Articles Page Styles */

/* Articles Header */
.articles-header {
    padding: 120px 0 60px;
    background: var(--hero-gradient);
    color: var(--light-text);
    text-align: center;
    margin-top: 70px;
}

.articles-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.articles-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 1s ease 0.2s backwards;
}

/* Articles Section */
.articles-section {
    padding: 80px 0;
    background-color: var(--bg-color);
    min-height: 60vh;
}

/* Article Filters */
.article-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-color);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.filter-btn:hover {
    background: var(--primary-color);
    color: var(--light-text);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
    border-color: transparent;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* Article Card */
.article-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.article-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: var(--transition);
}

.article-link:hover {
    text-decoration: none;
    color: inherit;
}

.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; }
.article-card:nth-child(5) { animation-delay: 0.5s; }
.article-card:nth-child(6) { animation-delay: 0.6s; }

.article-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px var(--shadow-color);
}

.article-card.hidden {
    display: none;
}

/* Article Image */
.article-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.article-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.article-category-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

/* Article Content */
.article-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.article-meta i {
    font-size: 0.9rem;
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    line-height: 1.4;
    color: var(--text-color);
    transition: var(--transition);
}

.article-link:hover .article-title {
    color: var(--primary-color);
}

.article-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.article-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

/* Article Footer */
.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.article-read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.article-read-more:hover {
    gap: 0.75rem;
    color: var(--secondary-color);
}

.article-read-more i {
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.article-tags span {
    padding: 0.3rem 0.8rem;
    background: var(--project-tag-bg);
    border-radius: 15px;
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 500;
}

/* Load More Button */
.load-more-container {
    text-align: center;
    margin-top: 3rem;
}

#load-more-btn {
    padding: 12px 40px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .articles-title {
        font-size: 2.5rem;
    }

    .articles-subtitle {
        font-size: 1rem;
        padding: 0 20px;
    }

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

    .article-filters {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }

    .article-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .article-meta {
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .articles-title {
        font-size: 2rem;
    }

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

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