/* 3D 封面流卡片轮播 */
.carousel-3d-wrapper {
    position: relative;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 8px 0 16px;
    overflow: hidden;
    isolation: isolate;
}

.carousel-3d-stage {
    position: relative;
    width: 100%;
    height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1000px;
}

.carousel-3d-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 卡片层叠定位 */
.carousel-3d-card {
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -200px;
    margin-top: -160px;
    width: 400px;
    cursor: pointer;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    backface-visibility: hidden;
    transform-origin: center center;
}

.carousel-3d-card .card {
    margin: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
    transition: box-shadow 0.6s;
}

/* 位置 0：当前激活卡片 — 正中央，最大 */
.carousel-3d-card.pos-0 {
    transform: scale(1);
    z-index: 5;
    opacity: 1;
    filter: none;
}

.carousel-3d-card.pos-0 .card {
    box-shadow: 0 14px 50px rgba(0, 0, 0, 0.30);
}

/* 位置 ±1：左右邻卡 — 偏移、缩小、半透明 */
.carousel-3d-card.pos-1 {
    transform: translateX(360px) scale(0.82) rotateY(-25deg);
    z-index: 4;
    opacity: 0.7;
    filter: brightness(0.8);
}

.carousel-3d-card.pos--1 {
    transform: translateX(-360px) scale(0.82) rotateY(25deg);
    z-index: 4;
    opacity: 0.7;
    filter: brightness(0.8);
}

/* 位置 ±2：最远可见卡 — 大幅偏移、缩小、更淡 */
.carousel-3d-card.pos-2 {
    transform: translateX(600px) scale(0.6) rotateY(-40deg);
    z-index: 3;
    opacity: 0.35;
    filter: brightness(0.55) blur(1px);
}

.carousel-3d-card.pos--2 {
    transform: translateX(-600px) scale(0.6) rotateY(40deg);
    z-index: 3;
    opacity: 0.35;
    filter: brightness(0.55) blur(1px);
}

/* 超出可视范围的卡片完全隐藏 */
.carousel-3d-card.pos-hidden {
    transform: scale(0.4);
    z-index: 1;
    opacity: 0;
    pointer-events: none;
    filter: blur(3px);
}

.carousel-3d-card .card-image {
    height: 220px;
    overflow: hidden;
}

.carousel-3d-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-3d-card .card-title {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
 padding: 12px 14px 10px;
    background: linear-gradient(transparent, rgba(0,0,0,0.75));
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.carousel-3d-card .card-content {
    padding: 10px 14px;
    min-height: 65px;
    background: #fff;
}

.carousel-3d-card .summary {
    font-size: 13px;
    color: #555;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.carousel-3d-card .publish-info {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #999;
    padding-top: 8px;
}

.carousel-3d-card .card-action {
    padding: 4px 12px 8px;
    border-top: 1px solid #f0f0f0;
    background: #fff;
}

/* 导航按钮 */
.carousel-3d-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 200;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid #e0e0e0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #555;
    transition: all 0.3s;
    box-shadow: 0 2px 12px rgba(0,0,0,0.12);
}

.carousel-3d-nav:hover {
    background: #fff;
    color: #2196F3;
    box-shadow: 0 4px 20px rgba(33, 150, 243, 0.25);
    transform: translateY(-50%) scale(1.08);
}

.carousel-3d-nav.prev {
    left: 100px;
}

.carousel-3d-nav.next {
    right: 100px;
}

/* 指示器 - 放在 wrapper 外面, 物理上不可能被卡片遮挡 */
.carousel-3d-dots {
    position: relative;
    z-index: 300;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin: 4px 0 12px;
    padding: 0;
    background: transparent;
    min-height: 32px;
}

.carousel-3d-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ccc;
    cursor: pointer;
    transition: all 0.3s;
}

.carousel-3d-dot.active {
    background: #2196F3;
    transform: scale(1.3);
}

/* 计数器 */
.carousel-3d-counter {
    font-size: 15px;
    color: #fff;
    font-weight: 600;
    background: rgba(0,0,0,0.65);
    padding: 6px 20px;
    border-radius: 20px;
    letter-spacing: 1.5px;
    backdrop-filter: blur(6px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

/* 暗色模式 */
body.dark .carousel-3d-nav {
    background: rgba(50, 50, 50, 0.95);
    border-color: #555;
    color: #ccc;
}

body.dark .carousel-3d-nav:hover {
    background: #444;
    color: #64B5F6;
}

body.dark .carousel-3d-card .card-content,
body.dark .carousel-3d-card .card-action {
    background: #2a2a2a;
}

body.dark .carousel-3d-card .summary {
    color: #bbb;
}

body.dark .carousel-3d-card .publish-info {
    color: #888;
}

body.dark .carousel-3d-card .card-action {
    border-top-color: #3a3a3a;
}

body.dark .carousel-3d-counter {
    color: #aaa;
    background: #333;
}

/* 响应式 */
@media (max-width: 768px) {
    .carousel-3d-stage {
        height: 420px;
    }
    .carousel-3d-card {
        width: 300px;
    }
    .carousel-3d-card .card-image {
        height: 180px;
    }
    .carousel-3d-card .card-title {
        font-size: 16px;
    }
    .carousel-3d-card.pos-1 {
        transform: translateX(240px) scale(0.78) rotateY(-20deg);
    }
    .carousel-3d-card.pos--1 {
        transform: translateX(-240px) scale(0.78) rotateY(20deg);
    }
    .carousel-3d-card.pos-2 {
        transform: translateX(400px) scale(0.55) rotateY(-35deg);
    }
    .carousel-3d-card.pos--2 {
        transform: translateX(-400px) scale(0.55) rotateY(35deg);
    }
    .carousel-3d-nav {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    .carousel-3d-nav.prev { left: 10px; }
    .carousel-3d-nav.next { right: 10px; }
}

@media (max-width: 480px) {
    .carousel-3d-stage {
        height: 340px;
    }
    .carousel-3d-card {
        width: 240px;
    }
    .carousel-3d-card .card-image {
        height: 140px;
    }
    .carousel-3d-card .card-title {
        font-size: 15px;
    }
    .carousel-3d-card .card-content {
        padding: 8px 12px;
        min-height: 50px;
    }
    .carousel-3d-card .summary {
        font-size: 12px;
        -webkit-line-clamp: 2;
    }
    .carousel-3d-card.pos-1 {
        transform: translateX(170px) scale(0.72) rotateY(-15deg);
    }
    .carousel-3d-card.pos--1 {
        transform: translateX(-170px) scale(0.72) rotateY(15deg);
    }
    .carousel-3d-card.pos-2 {
        transform: translateX(280px) scale(0.5) rotateY(-30deg);
    }
    .carousel-3d-card.pos--2 {
        transform: translateX(-280px) scale(0.5) rotateY(30deg);
    }
    .carousel-3d-nav { width: 34px; height: 34px; font-size: 14px; }
    .carousel-3d-nav.prev { left: 2px; }
    .carousel-3d-nav.next { right: 2px; }
}