/* ==========================================================
   COLLECTION GRID ([collection_grid] Shortcode)
   ========================================================== */

/* Grid */
.ls-collection-grid {
    display: grid;
    grid-template-columns: repeat(var(--ls-grid-cols-desktop, 3), 1fr);
    gap: var(--ls-grid-gap-desktop, 30px);
    align-items: start;
    /* Đảm bảo các khung không bị kéo giãn cho bằng nhau */
}

/* Item */
.ls-collection-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    aspect-ratio: auto;
    /* Khung tự vừa vặn với ảnh */
    background-color: var(--ls-bg-secondary);
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow 0.4s ease;
}

.ls-collection-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* Chiều cao cố định — override aspect-ratio, ảnh fill ngang crop dọc */
.ls-fixed-height .ls-collection-item {
    aspect-ratio: auto;
    height: var(--ls-collection-height, auto);
}

/* Link bọc toàn bộ card */
.ls-collection-link {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    text-decoration: none;
    color: inherit;
}

/* Image */
.ls-collection-image {
    width: 100%;
    position: relative;
}

.ls-collection-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
}

.ls-collection-item:hover .ls-collection-image img {
    transform: scale(1.08);
}

/* Placeholder khi không có ảnh */
.ls-collection-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #252525 50%, #1a1a1a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ls-collection-placeholder::after {
    content: '';
    width: 60px;
    height: 60px;
    border: 2px solid rgba(201, 169, 110, 0.2);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.08) 0%, transparent 70%);
}

/* Overlay */
.ls-collection-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px 25px 25px;
    background: linear-gradient(to top,
            rgba(10, 10, 10, 0.85) 0%,
            rgba(10, 10, 10, 0.3) 50%,
            transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    transition: all 0.4s ease;
    z-index: 2;
}

/* Tên bộ sưu tập */
.ls-collection-name {
    font-family: var(--ls-font-heading);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--ls-text-primary);
    margin: 0 0 6px 0;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.ls-collection-item:hover .ls-collection-name {
    color: var(--ls-accent);
}

/* Số tác phẩm */
.ls-collection-count {
    font-family: var(--ls-font-body);
    font-size: 0.82rem;
    color: var(--ls-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.ls-collection-count::before {
    content: '';
    width: 16px;
    height: 1px;
    background-color: var(--ls-accent);
    display: inline-block;
    transition: width 0.4s ease;
}

.ls-collection-item:hover .ls-collection-count::before {
    width: 28px;
}

/* Mô tả */
.ls-collection-desc {
    font-family: var(--ls-font-body);
    font-size: 0.88rem;
    color: var(--ls-text-secondary);
    margin: 8px 0 0;
    line-height: 1.5;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.4s ease 0.1s;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ls-collection-item:hover .ls-collection-desc {
    opacity: 1;
    transform: translateY(0);
}

/* Nút Xem series */
.ls-collection-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding: 10px 24px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ls-text-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    opacity: 0;
    transform: translateY(15px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) 0.15s;
    align-self: flex-start;
}

.ls-collection-btn::after {
    content: '→';
    font-size: 1.1rem;
    line-height: 1;
    transition: transform 0.3s ease;
}

.ls-collection-item:hover .ls-collection-btn {
    opacity: 1;
    transform: translateY(0);
}

.ls-collection-btn:hover {
    background: var(--ls-accent);
    color: #111;
    border-color: var(--ls-accent);
}

.ls-collection-btn:hover::after {
    transform: translateX(4px);
}

/* ===== HOVER COLOR OVERLAY ===== */
.ls-collection-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5) !important;
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 1;
    pointer-events: none;
    border-radius: inherit;
}

.ls-collection-item:hover::after {
    opacity: 1;
}

/* Empty State */
.ls-collection-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--ls-text-secondary);
    font-family: var(--ls-font-body);
    font-size: 1rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .ls-collection-grid {
        grid-template-columns: repeat(var(--ls-grid-cols-tablet, 2), 1fr);
        gap: var(--ls-grid-gap-tablet, 20px);
    }

    .ls-collection-name {
        font-size: 1.4rem;
    }

    .ls-collection-overlay {
        padding: 25px 20px 20px;
    }
}

@media (max-width: 768px) {
    .ls-collection-grid {
        grid-template-columns: repeat(var(--ls-grid-cols-mobile, 1), 1fr);
        gap: var(--ls-grid-gap-mobile, 15px);
    }

    .ls-collection-name {
        font-size: 1.3rem;
    }

    .ls-collection-overlay {
        padding: 20px 18px 18px;
    }

    .ls-collection-desc {
        opacity: 1;
        transform: translateY(0);
    }
}