/* ========================================
   电影胶片轮播组件样式
   包含胶片孔洞、边框等视觉效果
======================================== */

/* 轮播容器 */
.film-carousel-container {
    position: relative;
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    overflow: hidden;
}

/* 胶片条 */
.film-strip {
    position: relative;
    background: #6b7280; /* 改为更浅的灰色，提高对比度 */
    border-radius: 8px;
    padding: 20px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2); /* 减轻阴影 */
    overflow: hidden;
}

/* 胶片孔洞 */
.film-holes {
    position: absolute;
    left: 0;
    right: 0;
    height: 20px;
    background: #6b7280; /* 与胶片条颜色保持一致 */
    z-index: 2;
}

.film-holes-top {
    top: 0;
}

.film-holes-bottom {
    bottom: 0;
}

.film-holes::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 8px;
    transform: translateY(-50%);
    background-image: repeating-linear-gradient(
        to right,
        transparent 0px,
        transparent 15px,
        #4b5563 15px, /* 调整孔洞颜色为稍深的灰色 */
        #4b5563 25px
    );
}

/* 胶片内容区域 */
.film-content {
    position: relative;
    background: #374151; /* 改为深灰色，保持对比度但不会太暗 */
    margin: 0 30px;
    border-radius: 4px;
    overflow: hidden;
}

/* 轮播主体 - 增加高度以防止图片裁剪 */
.film-carousel {
    position: relative;
    width: 100%;
    height: 400px; /* 从300px增加到400px */
    overflow: hidden;
}

/* 轮播轨道 */
.film-track {
    display: flex;
    width: 200%; /* 6张图片，每次显示3张 */
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 胶片幻灯片 */
.film-slide {
    position: relative;
    flex: 0 0 33.333%; /* 每张占1/3宽度，显示3张 */
    height: 100%;
    border-right: 2px solid #6b7280; /* 调整边框颜色与胶片条一致 */
    overflow: hidden;
}

.film-slide:last-child {
    border-right: none;
}

.film-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.film-slide:hover img {
    transform: scale(1.05);
}

/* 图片说明 */
.film-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 20px 15px 15px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.film-slide:hover .film-caption {
    transform: translateY(0);
}

/* 导航按钮 */
.film-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(46, 123, 255, 0.9);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 3;
    box-shadow: 0 4px 15px rgba(46, 123, 255, 0.3);
}

.film-nav:hover {
    background: rgba(46, 123, 255, 1);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(46, 123, 255, 0.5);
}

.film-nav-prev {
    left: -25px;
}

.film-nav-next {
    right: -25px;
}

/* 指示器 */
.film-indicators {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.film-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid #666;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.film-indicator.active,
.film-indicator:hover {
    background: #2E7BFF;
    border-color: #2E7BFF;
    box-shadow: 0 0 10px rgba(46, 123, 255, 0.5);
}

/* 自动播放动画 */
@keyframes filmAutoPlay {
    0%, 25% { transform: translateX(0); }
    33.33%, 58.33% { transform: translateX(-33.333%); }
    66.66%, 91.66% { transform: translateX(-66.666%); }
    100% { transform: translateX(-100%); }
}

.film-track.auto-play {
    animation: filmAutoPlay 12s infinite;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .film-carousel-container {
        padding: 0 15px;
    }
    
    .film-nav {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .film-nav-prev {
        left: -20px;
    }
    
    .film-nav-next {
        right: -20px;
    }
}

@media (max-width: 768px) {
    .film-carousel {
        height: 320px; /* 从250px增加到320px */
    }
    
    .film-track {
        width: 300%; /* 移动端显示2张图片 */
    }
    
    .film-slide {
        flex: 0 0 50%; /* 每张占1/2宽度 */
    }
    
    .film-nav {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
    
    .film-nav-prev {
        left: -17px;
    }
    
    .film-nav-next {
        right: -17px;
    }
    
    .film-caption {
        font-size: 0.8rem;
        padding: 15px 10px 10px;
    }
}

@media (max-width: 480px) {
    .film-carousel {
        height: 280px; /* 从200px增加到280px */
    }
    
    .film-track {
        width: 600%; /* 移动端显示1张图片 */
    }
    
    .film-slide {
        flex: 0 0 100%; /* 每张占全宽 */
        border-right: none;
    }
    
    .film-content {
        margin: 0 15px;
    }
    
    .film-nav {
        display: none; /* 小屏幕隐藏导航按钮 */
    }
    
    .film-indicators {
        margin-top: 15px;
    }
    
    .film-indicator {
        width: 10px;
        height: 10px;
    }
}

/* 加载状态 */
.film-slide img {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.film-slide img.loaded {
    opacity: 1;
}

/* 无障碍访问 */
.film-nav:focus,
.film-indicator:focus {
    outline: 2px solid #2E7BFF;
    outline-offset: 2px;
}

/* 暂停自动播放 */
.film-carousel-container:hover .film-track.auto-play {
    animation-play-state: paused;
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 触摸设备上始终显示导航按钮 */
    .film-nav {
        display: flex !important;
        opacity: 0.8;
    }

    /* 增大触摸目标 */
    .film-indicator {
        width: 16px;
        height: 16px;
        margin: 0 6px;
    }

    /* 移除悬停效果 */
    .film-slide:hover img {
        transform: none;
    }

    .film-slide:hover .film-caption {
        transform: translateY(100%);
    }
}

/* 超小屏幕额外优化 */
@media (max-width: 360px) {
    .film-carousel-container {
        padding: 0 10px;
    }

    .film-content {
        margin: 0 10px;
    }

    .film-carousel {
        height: 240px; /* 从180px增加到240px */
    }
}