/* ============================================
   星络图书服务系统 - 轮播图样式
   5种切换效果
   ============================================ */

/* === 容器 === */
.carousel-xn {
    position: relative;
    overflow: hidden;
    margin: 0 auto;
    width: 100%;
}

.carousel-xn-inner {
    position: relative;
    width: 100%;
    height: 100%;
}

/* === 所有slide通用 === */
.carousel-xn .slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    display: block;
    overflow: hidden;
}

.carousel-xn .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.carousel-xn .slide .slide-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #fff;
}

.carousel-xn .slide .slide-overlay h3 {
    margin: 0 0 4px;
    font-size: 20px;
}

.carousel-xn .slide .slide-overlay p {
    margin: 0;
    font-size: 13px;
    opacity: 0.85;
}

/* === 箭头 === */
.carousel-xn .carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 44px;
    height: 44px;
    background: rgba(0,0,0,0.4);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
    line-height: 1;
}
.carousel-xn .carousel-arrow:hover {
    background: rgba(0,0,0,0.7);
}
.carousel-xn .carousel-arrow.prev { left: 12px; }
.carousel-xn .carousel-arrow.next { right: 12px; }

/* === 指示圆点 === */
.carousel-xn .carousel-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 8px;
}
.carousel-xn .carousel-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
}
.carousel-xn .carousel-dots span.active {
    background: #fff;
    transform: scale(1.25);
}

/* ========== 5种切换效果 ========== */

/* 1. Fade 淡入淡出 */
.carousel-xn.effect-fade .slide {
    opacity: 0;
    transition: opacity 0.8s ease;
    z-index: 1;
}
.carousel-xn.effect-fade .slide.active {
    opacity: 1;
    z-index: 2;
}

/* 2. Slide 左右滑动 */
.carousel-xn.effect-slide .slide {
    transform: translateX(100%);
    transition: transform 0.6s ease;
    z-index: 1;
}
.carousel-xn.effect-slide .slide.active {
    transform: translateX(0);
    z-index: 2;
}
.carousel-xn.effect-slide .slide.prev-active {
    transform: translateX(-100%);
}

/* 3. Zoom 缩放 */
.carousel-xn.effect-zoom .slide {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 1;
}
.carousel-xn.effect-zoom .slide.active {
    opacity: 1;
    transform: scale(1);
    z-index: 2;
}

/* 4. Flip 翻转 */
.carousel-xn.effect-flip {
    perspective: 1200px;
}
.carousel-xn.effect-flip .slide {
    opacity: 0;
    transform: rotateY(90deg);
    transform-origin: center center;
    transition: all 0.7s ease;
    backface-visibility: hidden;
    z-index: 1;
}
.carousel-xn.effect-flip .slide.active {
    opacity: 1;
    transform: rotateY(0deg);
    z-index: 2;
}
.carousel-xn.effect-flip .slide.prev-active {
    opacity: 0;
    transform: rotateY(-90deg);
}

/* 5. Blur 模糊过渡 */
.carousel-xn.effect-blur .slide {
    opacity: 0;
    filter: blur(10px);
    transform: scale(1.05);
    transition: all 0.8s ease;
    z-index: 1;
}
.carousel-xn.effect-blur .slide.active {
    opacity: 1;
    filter: blur(0);
    transform: scale(1);
    z-index: 2;
}