/* 页面主背景 */
body {
    background: linear-gradient(135deg, #f9fbe7 0%, #f1f8e9 25%, #e8f5e8 50%, #dcedc8 75%, #c5e1a5 100%);
    background-attachment: fixed;
    position: relative;
}

/* 背景装饰元素 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(139, 195, 74, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(205, 220, 57, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(212, 225, 87, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* 容器背景 */
.container {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(139, 195, 74, 0.12);
    margin-top: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(241, 248, 233, 0.5);
}

/* 头部背景 */
.header {
    background: linear-gradient(135deg, rgba(139, 195, 74, 0.08) 0%, rgba(205, 220, 57, 0.08) 100%);
    border-radius: 16px 16px 0 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 30% 20%, rgba(139, 195, 74, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 70% 80%, rgba(205, 220, 57, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

/* 电视剧项目背景 */
.tv-item {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    position: relative;
    overflow: hidden;
}

.tv-item::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(139, 195, 74, 0.03) 100%);
    pointer-events: none;
}

/* 前三名特殊背景效果 */
.tv-item:nth-child(1) {
    background: linear-gradient(135deg, rgba(244, 67, 54, 0.06) 0%, rgba(255, 255, 255, 0.96) 100%);
}

.tv-item:nth-child(2) {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.06) 0%, rgba(255, 255, 255, 0.96) 100%);
}

.tv-item:nth-child(3) {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.06) 0%, rgba(255, 255, 255, 0.96) 100%);
}

/* 加载状态背景 */
.loading {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    margin: 20px;
    border: 1px solid rgba(241, 248, 233, 0.3);
}

/* 错误信息背景 */
.error-message {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.06) 0%, rgba(255, 255, 255, 0.92) 100%);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    border: 1px solid rgba(231, 76, 60, 0.1);
    margin: 20px;
}

/* 底部背景 */
.footer {
    background: linear-gradient(135deg, rgba(139, 195, 74, 0.04) 0%, rgba(205, 220, 57, 0.04) 100%);
    border-radius: 0 0 16px 16px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(139, 195, 74, 0.4) 50%, transparent 100%);
}

/* 封面图片背景效果 */
.item-cover {
    position: relative;
    overflow: hidden;
}

.item-cover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(139, 195, 74, 0.05) 0%, transparent 50%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tv-item:hover .item-cover::before {
    opacity: 1;
}

/* 响应式背景调整 */
@media (max-width: 768px) {
    .container {
        margin-top: 10px;
        margin-bottom: 10px;
        border-radius: 12px;
    }
    
    .header {
        border-radius: 12px 12px 0 0;
    }
    
    .footer {
        border-radius: 0 0 12px 12px;
    }
    
    body::before {
        background-image: 
            radial-gradient(circle at 20% 80%, rgba(139, 195, 74, 0.04) 0%, transparent 40%),
            radial-gradient(circle at 80% 20%, rgba(205, 220, 57, 0.04) 0%, transparent 40%);
    }
}

@media (min-width: 1025px) {
    .container {
        margin-top: 40px;
        margin-bottom: 40px;
    }
    
    body::before {
        background-image: 
            radial-gradient(circle at 15% 85%, rgba(139, 195, 74, 0.08) 0%, transparent 60%),
            radial-gradient(circle at 85% 15%, rgba(205, 220, 57, 0.08) 0%, transparent 60%),
            radial-gradient(circle at 50% 50%, rgba(212, 225, 87, 0.06) 0%, transparent 70%);
    }
}

/* 动画效果 */
@keyframes backgroundShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 悬浮时的背景变化 */
.tv-item:hover {
    background: rgba(255, 255, 255, 0.98);
}

.tv-item:hover::after {
    background: linear-gradient(90deg, transparent 0%, rgba(139, 195, 74, 0.06) 100%);
}

/* 排名背景渐变 */
.rank {
    position: relative;
    overflow: hidden;
}

.rank::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.25) 0%, transparent 100%);
    pointer-events: none;
}

/* 按钮背景效果 */
.retry-btn {
    position: relative;
    overflow: hidden;
}

.retry-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    transition: left 0.5s ease;
}

.retry-btn:hover::before {
    left: 100%;
}