/* ========== BLOG.CSS - Trang danh sách bài viết ========== */
/* Author: Bdkweb - dkhuong.com */

/* ========== BLOG HERO ========== */
.blog-hero {
    background: linear-gradient(180deg, #F4F9FE 0%, #FFFFFF 100%);
    padding: 110px 0 0;
    position: relative;
}

.blog-subtitle {
    display: inline-block;
    font-size: 0.88rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.blog-title {
    font-size: 2.6rem;
    font-weight: 900;
    color: var(--dark);
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.blog-description {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 550px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

/* ========== SEARCH BAR ========== */
.blog-search {
    max-width: 500px;
    margin: 0 auto;
}

.search-input-group {
    display: flex;
    align-items: center;
    background: var(--white);
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 2px solid var(--gray-200);
    transition: var(--transition);
    overflow: hidden;
}

.search-input-group:focus-within {
    border-color: var(--primary);
    box-shadow: 0 4px 25px rgba(10, 127, 209, 0.12);
}

.search-icon {
    color: var(--gray-400);
    font-size: 1rem;
    margin-left: 18px;
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    border: none;
    padding: 14px 14px;
    font-size: 0.95rem;
    outline: none;
    background: transparent;
    color: var(--dark);
    font-family: var(--font-primary);
}

.search-input::placeholder {
    color: var(--gray-400);
}

.search-btn {
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    padding: 14px 24px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: var(--font-primary);
    letter-spacing: 0.3px;
}

.search-btn:hover {
    opacity: 0.9;
}

/* Decorative Line */
.hero-line {
    height: 4px;
    background: var(--primary-gradient);
    margin-top: 2.5rem;
}

/* ========== BLOG GRID SECTION ========== */
.blog-grid-section {
    padding: 3rem 0 5rem;
}

/* Grid Layout */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Grid Item */
.blog-grid-item {
    display: flex;
}

/* Grid Card */
.blog-grid-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    width: 100%;
}

.blog-grid-card:hover {
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
    transform: translateY(-6px);
    border-color: var(--primary-light);
}

/* ========== THUMBNAIL ========== */
.blog-grid-thumb {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 3/2;
    background: var(--gray-100);
}

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

.blog-grid-card:hover .grid-thumb-img {
    transform: scale(1.08);
}

/* Overlay */
.grid-thumb-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 127, 209, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.blog-grid-card:hover .grid-thumb-overlay {
    opacity: 1;
}

.grid-thumb-overlay span {
    color: var(--white);
    font-weight: 700;
    font-size: 1rem;
    padding: 10px 24px;
    border: 2px solid var(--white);
    border-radius: 50px;
    transform: translateY(10px);
    transition: transform 0.3s ease;
    letter-spacing: 0.5px;
}

.blog-grid-card:hover .grid-thumb-overlay span {
    transform: translateY(0);
}

/* ========== CONTENT ========== */
.blog-grid-content {
    padding: 1.25rem 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

/* Category Badge */
.grid-category {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 0.75rem;
    transition: var(--transition-fast);
    align-self: flex-start;
}

.grid-category:hover {
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
}

/* Title */
.grid-title {
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1.45;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.grid-title a {
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition-fast);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

/* Excerpt */
.grid-excerpt {
    font-size: 0.88rem;
    color: var(--gray-600);
    line-height: 1.65;
    margin-bottom: 1rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Meta */
.grid-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.75rem;
    border-top: 1px solid var(--gray-100);
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-top: auto;
}

.grid-date i,
.grid-read-time i {
    color: var(--primary);
    margin-right: 4px;
    font-size: 0.75rem;
}

.grid-date,
.grid-read-time {
    display: flex;
    align-items: center;
    font-weight: 500;
}

/* ========== PAGINATION ========== */
.blog-pagination {
    margin-top: 3rem;
    text-align: center;
}

.blog-pagination .nav-links {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}

.blog-pagination .page-numbers {
    min-width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--gray-200);
    transition: var(--transition-fast);
    text-decoration: none;
    padding: 0 12px;
}

.blog-pagination .page-numbers.current {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(10, 127, 209, 0.3);
}

.blog-pagination .page-numbers:hover:not(.current) {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

.blog-pagination .page-numbers.dots {
    border: none;
    background: transparent;
    color: var(--gray-400);
}

.blog-pagination .page-numbers.dots:hover {
    background: transparent;
    border: none;
}

/* ========== NO POSTS ========== */
.no-posts {
    text-align: center;
    padding: 4rem 0;
}

.no-posts-icon {
    font-size: 4rem;
    color: var(--gray-300);
    margin-bottom: 1.5rem;
}

.no-posts h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.no-posts p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

/* ========== RESPONSIVE ========== */

/* Tablet: 2 cột */
@media (max-width: 991.98px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
    
    .blog-title {
        font-size: 2.2rem;
    }
    
    .blog-description {
        font-size: 1rem;
    }
    
    .grid-title {
        font-size: 1.05rem;
    }
}

/* Mobile: 1 cột */
@media (max-width: 767.98px) {
    .blog-hero {
        padding: 90px 0 0;
    }
    
    .blog-title {
        font-size: 1.8rem;
    }
    
    .blog-description {
        font-size: 0.95rem;
    }
    
    .search-input-group {
        flex-direction: column;
        border-radius: 16px;
        border: none;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }
    
    .search-icon {
        display: none;
    }
    
    .search-input {
        width: 100%;
        padding: 14px 18px;
        border-bottom: 1px solid var(--gray-200);
    }
    
    .search-btn {
        width: 100%;
        padding: 14px;
        text-align: center;
        border-radius: 0 0 16px 16px;
    }
    
    .blog-grid-section {
        padding: 2rem 0 4rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .blog-grid-card {
        border-radius: 14px;
    }
    
    .grid-title {
        font-size: 1.1rem;
    }
    
    .grid-excerpt {
        font-size: 0.9rem;
    }
    
    /* Ẩn overlay trên mobile, luôn hiển thị nhẹ */
    .grid-thumb-overlay {
        background: rgba(10, 127, 209, 0.15);
        opacity: 1;
    }
    
    .grid-thumb-overlay span {
        display: none;
    }
}

/* Small Mobile */
@media (max-width: 575.98px) {
    .blog-title {
        font-size: 1.5rem;
    }
    
    .blog-subtitle {
        font-size: 0.78rem;
        letter-spacing: 2px;
    }
    
    .blog-grid-content {
        padding: 1rem 1rem 1.25rem;
    }
    
    .grid-title {
        font-size: 1rem;
    }
    
    .grid-excerpt {
        font-size: 0.85rem;
        -webkit-line-clamp: 2;
    }
    
    .blog-pagination .page-numbers {
        min-width: 36px;
        height: 36px;
        font-size: 0.85rem;
        border-radius: 10px;
    }
}