/* ===========================================
   Artigos Section - Custom Styles
   =========================================== */

/* Hero Section */
.artigos-hero {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.artigos-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 245, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 230, 118, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.artigos-hero .hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.artigos-hero .hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

.artigos-hero .hero-title i {
    color: var(--primary-color);
    font-size: 0.9em;
}

.artigos-hero .hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

/* Search Container */
.search-container {
    max-width: 500px;
    margin: 0 auto 30px;
    position: relative;
}

.search-container i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.search-container input {
    width: 100%;
    padding: 18px 20px 18px 55px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all 0.3s ease;
}

.search-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.2);
}

.search-container input:focus + i,
.search-container:focus-within i {
    color: var(--primary-color);
}

.search-container input::placeholder {
    color: var(--text-muted);
}

/* Tags Filter */
.tags-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    max-width: 800px;
    margin: 0 auto;
}

.tag-btn {
    padding: 10px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-primary);
}

.tag-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.tag-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-color: transparent;
    color: var(--bg-primary);
    box-shadow: 0 5px 20px rgba(0, 245, 255, 0.3);
}

/* Articles Section */
.artigos-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.artigos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

/* Article Card */
.artigo-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
}

.artigo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 16px 16px 0 0;
    z-index: 2;
}

.artigo-card:hover::before {
    height: 5px;
    filter: brightness(1.2);
}

.artigo-card.featured .artigo-placeholder {
    background: linear-gradient(135deg, #ff6b6b, #feca57);
}

.artigo-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Article Image */
.artigo-image {
    position: relative;
    height: 180px;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.artigo-placeholder {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--bg-primary);
    transition: all 0.3s ease;
}

.artigo-card:hover .artigo-placeholder {
    transform: scale(1.1);
    box-shadow: 0 10px 30px rgba(0, 245, 255, 0.4);
}

.artigo-category {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 6px 14px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Article Content */
.artigo-content {
    padding: 25px;
}

.artigo-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}

.artigo-date,
.artigo-read-time {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.artigo-date i,
.artigo-read-time i {
    color: var(--primary-color);
    font-size: 0.8rem;
}

.artigo-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.artigo-card:hover .artigo-title {
    color: var(--primary-color);
}

.artigo-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.artigo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.artigo-tags .tag {
    padding: 4px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.artigo-tags .tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.artigo-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.artigo-link i {
    transition: transform 0.3s ease;
}

.artigo-link:hover {
    color: var(--accent-color);
}

.artigo-link:hover i {
    transform: translateX(5px);
}

/* No Results */
.no-results {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.no-results i {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-results h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

/* Newsletter Section */
.newsletter-section {
    padding: 80px 0;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.newsletter-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 245, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.newsletter-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    position: relative;
    z-index: 2;
}

.newsletter-text h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.newsletter-text h2 i {
    color: var(--primary-color);
}

.newsletter-text p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.newsletter-form {
    display: flex;
    gap: 12px;
    flex: 1;
    max-width: 400px;
}

.newsletter-form input {
    flex: 1;
    padding: 15px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all 0.3s ease;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.newsletter-form button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 15px 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 10px;
    color: var(--bg-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.newsletter-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 245, 255, 0.3);
}

/* ===========================================
   Responsive Design
   =========================================== */
@media (max-width: 768px) {
    .artigos-hero {
        padding: 120px 0 50px;
    }
    
    .artigos-hero .hero-title {
        flex-direction: column;
        gap: 10px;
    }
    
    .artigos-hero .hero-subtitle {
        font-size: 1rem;
        padding: 0 20px;
    }
    
    .search-container {
        margin: 0 20px 25px;
    }
    
    .search-container input {
        padding: 15px 15px 15px 50px;
    }
    
    .tags-filter {
        padding: 0 15px;
        gap: 8px;
    }
    
    .tag-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    
    .artigos-section {
        padding: 50px 0;
    }
    
    .artigos-grid {
        grid-template-columns: 1fr;
        gap: 25px;
        padding: 0 10px;
    }
    
    .artigo-card {
        border-radius: 12px;
    }
    
    .artigo-image {
        height: 150px;
    }
    
    .artigo-placeholder {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .artigo-content {
        padding: 20px;
    }
    
    .artigo-meta {
        flex-direction: column;
        gap: 8px;
    }
    
    .artigo-title {
        font-size: 1.15rem;
    }
    
    .artigo-excerpt {
        font-size: 0.9rem;
    }
    
    .newsletter-section {
        padding: 50px 0;
    }
    
    .newsletter-content {
        flex-direction: column;
        text-align: center;
        padding: 30px 20px;
        margin: 0 15px;
    }
    
    .newsletter-text h2 {
        justify-content: center;
        font-size: 1.5rem;
    }
    
    .newsletter-form {
        flex-direction: column;
        width: 100%;
        max-width: none;
    }
    
    .newsletter-form button {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .artigos-hero {
        padding: 100px 0 40px;
    }
    
    .artigos-hero .hero-title {
        font-size: 2rem;
    }
    
    .artigos-hero .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .tag-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    .artigo-content {
        padding: 18px;
    }
    
    .artigo-title {
        font-size: 1.1rem;
    }
    
    .artigo-tags .tag {
        font-size: 0.7rem;
        padding: 3px 10px;
    }
    
    .newsletter-content {
        padding: 25px 15px;
    }
    
    .newsletter-text h2 {
        font-size: 1.3rem;
    }
}