/* 背景样式文件 - 单独管理所有背景相关样式 */

/* 主体背景 */
body {
    background: linear-gradient(135deg, #f0fff4 0%, #e6fffa 50%, #f0fff4 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(104, 211, 145, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(72, 187, 120, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(56, 161, 105, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* 容器背景 */
.container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 输入区域背景 */
.input-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(104, 211, 145, 0.2);
    position: relative;
    overflow: hidden;
}

.input-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #48bb78, #68d391, #9ae6b4);
}

/* 配色方案卡片背景 */
.palette {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(104, 211, 145, 0.15);
    position: relative;
    overflow: hidden;
}

.palette::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #68d391, transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.palette:hover::before {
    opacity: 1;
}

/* 颜色信息背景 */
.color-info {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(104, 211, 145, 0.2);
}

/* 颜色项背景 */
.color-item {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(104, 211, 145, 0.15);
    position: relative;
}

.color-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 48%, rgba(104, 211, 145, 0.05) 50%, transparent 52%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.color-item:hover::after {
    opacity: 1;
}

/* 颜色详情背景 */
.color-detail {
    background: rgba(104, 211, 145, 0.08);
    border: 1px solid rgba(104, 211, 145, 0.1);
    position: relative;
}

.color-detail::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
    pointer-events: none;
}

/* 按钮背景 */
.generate-btn {
    background: linear-gradient(135deg, #48bb78 0%, #68d391 50%, #9ae6b4 100%);
    position: relative;
    overflow: hidden;
}

.generate-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

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

/* 加载动画背景 */
.loading {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(104, 211, 145, 0.2);
}

/* 响应式背景调整 */
@media (max-width: 768px) {
    body {
        background: linear-gradient(180deg, #f0fff4 0%, #e6fffa 100%);
    }
    
    .container {
        background: rgba(255, 255, 255, 0.05);
        backdrop-filter: blur(5px);
    }
    
    .input-section,
    .palette,
    .color-info {
        backdrop-filter: blur(10px);
    }
}

@media (max-width: 480px) {
    body::before {
        background-image: 
            radial-gradient(circle at 50% 50%, rgba(104, 211, 145, 0.08) 0%, transparent 70%);
    }
    
    .container {
        background: transparent;
        backdrop-filter: none;
        border: none;
    }
}