/* ============================================================
   Banner Slider — Splide.js custom theme
   Class scope: .banner-slider (1 file dùng chung mọi banner instance)
   ============================================================ */
.banner-slider {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    min-height: 200px;
}

@media (min-width: 768px) {
    .banner-slider { min-height: 400px; }
}

.banner-slider .splide__slide {
    overflow: hidden;
}

.banner-slider .splide__slide a {
    display: block;
    text-decoration: none;
}

.banner-slider .banner-image-container {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    margin: 0;
}

.banner-slider .banner-image-container img,
.banner-slider .banner-image-container picture {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.banner-slider .banner-image-container {
    height: 250px;
}

@media (min-width: 768px) {
    .banner-slider .banner-image-container {
        height: 400px;
    }
}

@media (min-width: 1200px) {
    .banner-slider .banner-image-container {
        height: 500px;
    }
}

/* Single banner (không dùng slider) */
.banner-item .banner-image-container {
    margin: 0;   /* bỏ margin-bottom: 1rem mặc định của <figure> (Bootstrap reboot) */
}
.banner-item .banner-image-container img {
    display: block;
    width: 100%;
    height: auto;
}

/* ============================================================
   Ken Burns effect — chỉ chạy trên slide active
   ============================================================ */
.banner-kenburns {
    transform-origin: center center;
    will-change: transform;
    transition: transform 0.3s ease;
}

.banner-slider:hover .banner-kenburns {
    transform: scale(1.05);
}

@keyframes bannerKenburnsZoom {
    0%   { transform: scale(1); }
    50%  { transform: scale(1.04); }
    100% { transform: scale(1); }
}

.banner-slider .splide__slide.is-active .banner-kenburns {
    animation: bannerKenburnsZoom 8s ease-in-out infinite;
}

/* ============================================================
   Navigation arrows
   ============================================================ */
.banner-slider .splide__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.4);
    color: #fff;
    border: none;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease,
                background 0.3s ease, transform 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.banner-slider .splide__arrow svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.banner-slider .splide__arrow--prev { left: 20px; }
.banner-slider .splide__arrow--next { right: 20px; }

.banner-slider:hover .splide__arrow {
    opacity: 1;
    visibility: visible;
}

.banner-slider .splide__arrow:hover {
    background: rgba(0, 0, 0, 0.65);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.banner-slider .splide__arrow:disabled {
    opacity: 0.3 !important;
    cursor: not-allowed;
}

/* ============================================================
   Pagination bullets
   ============================================================ */
.banner-slider .splide__pagination {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 0;
    margin: 0;
    list-style: none;
    z-index: 10;
}

.banner-slider .splide__pagination__page {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: transform 0.3s ease, background 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.banner-slider .splide__pagination__page:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.banner-slider .splide__pagination__page.is-active {
    background: #fff;
    transform: scale(1.3);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 991px) {
    .banner-slider .splide__arrow {
        width: 42px;
        height: 42px;
    }
    .banner-slider .splide__arrow svg {
        width: 14px;
        height: 14px;
    }
    .banner-slider .splide__arrow--prev { left: 15px; }
    .banner-slider .splide__arrow--next { right: 15px; }
}

@media (max-width: 767px) {
    .banner-slider .splide__arrow { display: none; }
    .banner-slider .splide__pagination { bottom: 15px; }
    .banner-slider .splide__pagination__page {
        width: 10px;
        height: 10px;
    }
}

/* ============================================================
   Focus state (a11y)
   ============================================================ */
.banner-slider .splide__slide a:focus-visible {
    outline: 3px solid #007bff;
    outline-offset: 2px;
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    .banner-slider *,
    .banner-kenburns {
        animation: none !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================
   Placeholder fallback (banner chưa upload ảnh)
   ============================================================ */
.banner-placeholder { min-height: 300px; }

@media (min-width: 768px) {
    .banner-placeholder { min-height: 400px; }
}

/* ============================================================
   Desktop-only slides (ẩn trên mobile nếu không có ảnh mobile)
   ============================================================ */
@media (max-width: 768px) {
    .banner-slider .splide__slide.desktop-only,
    .banner-item.desktop-only {
        display: none !important;
    }
}