/* --- 1. KHUNG LƯỚI 2 CỘT (QUAN TRỌNG) --- */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    /* Chia 2 cột đều nhau */
    gap: 30px;
    /* Khoảng cách giữa các thẻ */
    margin-top: 20px;
}

/* --- 2. THẺ BÀI VIẾT (CARD) --- */
.blog-card {
    background: #252525;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #333;
    position: relative;
    cursor: pointer;
    transition: transform 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    border-color: #2563eb;
    /* Viền sáng khi hover */
}

/* Ảnh bìa */
.blog-thumb {
    width: 100%;
    height: 220px;
    position: relative;
    overflow: hidden;
}

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

.blog-card:hover .blog-thumb img {
    transform: scale(1.1);
}

/* Nhãn ngày tháng */
.blog-date {
    position: absolute;
    top: 20px;
    left: 20px;
    background: #d97706;
    /* Màu cam */
    color: white;
    padding: 8px 12px;
    border-radius: 10px;
    text-align: center;
    z-index: 2;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.date-num {
    display: block;
    font-size: 20px;
    font-weight: bold;
    line-height: 1;
}

.date-month {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    margin-top: 2px;
}

/* Nội dung tóm tắt */
.blog-content {
    padding: 25px;
    flex-grow: 1;
}

.blog-cat {
    color: #2563eb;
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}

.blog-title {
    font-size: 18px;
    color: white;
    margin-bottom: 12px;
    line-height: 1.4;
    font-weight: 600;
}

.blog-desc {
    font-size: 14px;
    color: #a6a6a6;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* --- 3. GIAO DIỆN CHI TIẾT BÀI VIẾT --- */
.btn-back {
    background: transparent;
    border: 1px solid #444;
    color: #ccc;
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    margin-bottom: 20px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: 0.3s;
}

.btn-back:hover {
    background: #2563eb;
    border-color: #2563eb;
    color: white;
}

.detail-header {
    margin-bottom: 20px;
}

.detail-title {
    font-size: 28px;
    color: white;
    margin: 10px 0;
    line-height: 1.3;
}

.detail-meta {
    color: #888;
    font-size: 14px;
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
}

.detail-img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 30px;
    border: 1px solid #333;
}

.detail-body {
    color: #d6d6d6;
    line-height: 1.8;
    font-size: 16px;
}

.detail-body p {
    margin-bottom: 20px;
}

/* --- 4. RESPONSIVE (VỀ 1 CỘT TRÊN MOBILE) --- */
@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-thumb {
        height: 200px;
    }
}