/* 
 * 一拍即租平台通用样式优化版
 * 包含所有页面共享的样式定义，优化了性能和响应式设计
 */

/* 基础样式 */
body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background-color: #f8f9fa;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 应用容器 */
.app-container {
    max-width: 390px;
    height: 844px;
    margin: 0 auto;
    background-color: #ffffff;
    border-radius: 40px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

/* 响应式设计 - 小屏幕适配 */
@media (max-width: 400px) {
    .app-container {
        max-width: 100%;
        height: 100vh;
        border-radius: 0;
    }
}

/* 状态栏 */
.status-bar {
    height: 44px;
    background-color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

/* 导航栏 */
.nav-bar {
    height: 83px;
    background-color: #ffffff;
    border-top: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: space-around;
    position: sticky;
    bottom: 0;
    z-index: 50;
}

/* 输入框样式 */
.input-field {
    border-bottom: 1px solid #e5e7eb;
    padding: 12px 0;
    transition: border-color 0.2s ease;
}

.input-field:focus-within {
    border-color: #EC4899;
}

.input-field input {
    width: 100%;
    border: none;
    outline: none;
    background: transparent;
}

/* 卡片样式 */
.polaroid-card {
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    background-color: #ffffff;
    overflow: hidden;
}

.polaroid-card:hover, .polaroid-card:active {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.12);
}

.polaroid-card img {
    width: 100%;
    height: 130px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.polaroid-card:hover img {
    transform: scale(1.05);
}

/* 选项卡样式 */
.tab-active {
    color: #EC4899;
    border-bottom: 2px solid #EC4899;
    transition: all 0.2s ease;
}

.tab-container {
    display: flex;
    border-bottom: 1px solid #f0f0f0;
}

.tab-item {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-item:hover {
    color: #EC4899;
}

/* 商品项样式 */
.product-item {
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s ease;
}

.product-item:last-child {
    border-bottom: none;
}

.product-item:hover {
    background-color: #f9f9f9;
}

/* 社交登录按钮 */
.social-login-btn {
    width: 50px;
    height: 50px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.social-login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 按钮样式 */
.primary-btn {
    background-image: linear-gradient(to right, #EC4899, #EF4444);
    color: white;
    border-radius: 9999px;
    padding: 0.875rem 0;
    font-weight: 500;
    width: 100%;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-align: center;
}

.primary-btn:hover, .primary-btn:active {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
}

/* 返回按钮 */
.back-btn {
    cursor: pointer;
    transition: transform 0.2s ease;
}

.back-btn:hover {
    transform: translateX(-3px);
}

/* 加载优化 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.3s ease forwards;
}

/* 骨架屏 */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 触摸反馈 */
.touch-feedback {
    position: relative;
    overflow: hidden;
}

.touch-feedback::after {
    content: '';
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, #fff 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.3s, opacity 0.5s;
}

.touch-feedback:active::after {
    transform: scale(0, 0);
    opacity: 0.3;
    transition: 0s;
}

/* 滚动优化 */
.smooth-scroll {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    .app-container {
        background-color: #1f2937;
        color: #f3f4f6;
    }
    
    .status-bar, .nav-bar {
        background-color: #1f2937;
    }
    
    .input-field {
        border-color: #374151;
    }
    
    .input-field input {
        color: #f3f4f6;
    }
    
    .polaroid-card {
        background-color: #2d3748;
    }
    
    .product-item:hover {
        background-color: #2d3748;
    }
    
    .skeleton {
        background: linear-gradient(90deg, #2d3748 25%, #374151 50%, #2d3748 75%);
    }
}