/* === Nút Xem thêm === */
#lk-load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 40px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #1e73be, #0056a6);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all .3s ease;
    box-shadow: 0 3px 12px rgba(30,115,190,.35);
    letter-spacing: .3px;
}
#lk-load-more-btn:hover {
    background: linear-gradient(135deg, #0056a6, #003d7a);
    box-shadow: 0 5px 18px rgba(30,115,190,.5);
    transform: translateY(-1px);
}
#lk-load-more-btn .lk-btn-icon {
    font-size: 12px;
    transition: transform .3s ease;
}
#lk-load-more-btn:hover .lk-btn-icon {
    transform: translateY(3px);
}

/* === Loading state === */
#lk-load-more-btn.lk-loading {
    pointer-events: none;
    opacity: .85;
}
#lk-load-more-btn.lk-loading .lk-btn-text,
#lk-load-more-btn.lk-loading .lk-btn-icon {
    visibility: hidden;
}
#lk-load-more-btn.lk-loading .lk-btn-spinner {
    display: block;
}

/* === Spinner === */
#lk-load-more-btn .lk-btn-spinner {
    display: none;
    position: absolute;
    width: 22px;
    height: 22px;
    border: 3px solid rgba(255,255,255,.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: lk-spin .7s linear infinite;
}
#lk-load-more-btn {
    position: relative;
    justify-content: center;
}

@keyframes lk-spin {
    to { transform: rotate(360deg); }
}

/* === Hiệu ứng fade-in khi section được inject === */
.lk-deferred-reveal {
    animation: lk-fade-in .5s ease forwards;
}
@keyframes lk-fade-in {
    from { opacity: 0; transform: translateY(15px); }
    to   { opacity: 1; transform: translateY(0); }
}