/*
 * 柠檬软件销售主题 - 产品集合页面样式
 * 基于 lemon-variables.css 和 lemon-base.css
 */

/* 产品集合页面主容器 */
.lemon-products-page {
    min-height: 100vh;
    background: var(--lemon-bg-secondary);
}

/* 页面头部 */
.lemon-page-header {
    background: var(--lemon-gradient-primary);
    padding: var(--lemon-space-16) 0 var(--lemon-space-12);
    color: var(--lemon-text-light);
    position: relative;
    overflow: hidden;
}

.lemon-page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.page-title {
    font-size: var(--lemon-text-5xl);
    font-weight: var(--lemon-font-bold);
    margin-bottom: var(--lemon-space-4);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    color: #ffffff;
}

.page-subtitle {
    font-size: var(--lemon-text-xl);
    margin-bottom: var(--lemon-space-8);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: #ffffff;
}

/* 搜索区域 */
.products-filter {
    display: flex;
    flex-direction: column;
    gap: var(--lemon-space-6);
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--lemon-radius-xl);
    padding: var(--lemon-space-6);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.search-box {
    display: flex;
    position: relative;
}

.search-input {
    flex: 1;
    padding: var(--lemon-space-4) var(--lemon-space-6);
    border: none;
    border-radius: var(--lemon-radius-lg);
    font-size: var(--lemon-text-base);
    background: rgba(255, 255, 255, 0.9);
    color: var(--lemon-text-primary);
    transition: all var(--lemon-transition-smooth);
}

.search-input:focus {
    outline: none;
    background: var(--lemon-bg-primary);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.search-input::placeholder {
    color: var(--lemon-text-muted);
}

.search-btn {
    position: absolute;
    right: var(--lemon-space-2);
    top: 50%;
    transform: translateY(-50%);
    background: var(--lemon-primary);
    color: var(--lemon-text-light);
    border: none;
    border-radius: var(--lemon-radius-md);
    padding: var(--lemon-space-3);
    cursor: pointer;
    transition: all var(--lemon-transition-smooth);
}

.search-btn:hover {
    background: var(--lemon-primary-dark);
    transform: translateY(-50%) scale(1.05);
}

/* 产品展示区域 */
.lemon-products-section {
    padding: var(--lemon-space-12) 0;
}

/* 错误和空状态 */
.lemon-error-message,
.lemon-empty-state {
    text-align: center;
    padding: var(--lemon-space-16) var(--lemon-space-6);
    background: var(--lemon-bg-primary);
    border-radius: var(--lemon-radius-xl);
    box-shadow: var(--lemon-shadow-md);
}

.error-content,
.empty-content {
    max-width: 400px;
    margin: 0 auto;
}

.error-content i,
.empty-content i {
    font-size: var(--lemon-text-4xl);
    color: var(--lemon-danger);
    margin-bottom: var(--lemon-space-4);
}

.empty-content i {
    color: var(--lemon-text-muted);
}

.error-content h3,
.empty-content h3 {
    font-size: var(--lemon-text-2xl);
    margin-bottom: var(--lemon-space-4);
    color: var(--lemon-text-primary);
}

.error-content p,
.empty-content p {
    color: var(--lemon-text-secondary);
    line-height: var(--lemon-leading-relaxed);
}

/* 产品网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--lemon-space-8);
    margin-bottom: var(--lemon-space-12);
}

/* 产品卡片 */
.product-card {
    background: var(--lemon-bg-primary);
    border-radius: var(--lemon-radius-xl);
    box-shadow: var(--lemon-shadow-md);
    overflow: hidden;
    transition: all var(--lemon-transition-smooth);
    position: relative;
    border: 1px solid var(--lemon-border-light);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--lemon-shadow-xl);
    border-color: var(--lemon-primary-light);
}

/* 产品图片区域 */
.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--lemon-gradient-card);
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--lemon-transition-smooth);
}

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

.product-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--lemon-text-muted);
    background: var(--lemon-bg-muted);
}

.product-placeholder i {
    font-size: var(--lemon-text-3xl);
    margin-bottom: var(--lemon-space-2);
}

/* 产品标签 */
.product-badges {
    position: absolute;
    top: var(--lemon-space-3);
    left: var(--lemon-space-3);
    display: flex;
    gap: var(--lemon-space-2);
    flex-wrap: wrap;
}

.badge {
    padding: var(--lemon-space-1) var(--lemon-space-3);
    border-radius: var(--lemon-radius-full);
    font-size: var(--lemon-text-xs);
    font-weight: var(--lemon-font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-paid {
    background: var(--lemon-gradient-success);
    color: var(--lemon-text-light);
}

.badge-free {
    background: var(--lemon-gradient-accent);
    color: var(--lemon-text-light);
}

.badge-category {
    background: rgba(255, 255, 255, 0.9);
    color: var(--lemon-text-primary);
    backdrop-filter: blur(10px);
}

/* 产品信息区域 */
.product-info {
    padding: var(--lemon-space-6);
}

.product-title {
    font-size: var(--lemon-text-xl);
    font-weight: var(--lemon-font-bold);
    margin-bottom: var(--lemon-space-3);
    line-height: var(--lemon-leading-tight);
}

.product-title a {
    color: var(--lemon-text-primary);
    text-decoration: none;
    transition: color var(--lemon-transition-fast);
}

.product-title a:hover {
    color: var(--lemon-primary);
}

.product-description {
    color: var(--lemon-text-secondary);
    line-height: var(--lemon-leading-relaxed);
    margin-bottom: var(--lemon-space-4);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 产品特性 */
.product-features {
    display: flex;
    flex-direction: column;
    gap: var(--lemon-space-2);
    margin-bottom: var(--lemon-space-4);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--lemon-space-2);
    font-size: var(--lemon-text-sm);
    color: var(--lemon-text-secondary);
}

.feature-item i {
    color: var(--lemon-success);
    font-size: var(--lemon-text-xs);
}

/* 产品元信息 */
.product-meta {
    display: flex;
    gap: var(--lemon-space-4);
    margin-bottom: var(--lemon-space-4);
    padding: var(--lemon-space-3) 0;
    border-top: 1px solid var(--lemon-border-light);
    border-bottom: 1px solid var(--lemon-border-light);
}

.product-version,
.product-category {
    display: flex;
    align-items: center;
    gap: var(--lemon-space-2);
    font-size: var(--lemon-text-sm);
    color: var(--lemon-text-muted);
}

.product-version i,
.product-category i {
    font-size: var(--lemon-text-xs);
}

/* 产品价格 */
.product-pricing {
    margin-bottom: var(--lemon-space-6);
}

.price-info {
    display: flex;
    align-items: center;
    gap: var(--lemon-space-3);
}

.current-price {
    font-size: var(--lemon-text-2xl);
    font-weight: var(--lemon-font-bold);
    color: var(--lemon-primary);
}

.original-price {
    font-size: var(--lemon-text-lg);
    color: var(--lemon-text-muted);
    text-decoration: line-through;
}

.free-price {
    font-size: var(--lemon-text-2xl);
    font-weight: var(--lemon-font-bold);
    color: var(--lemon-success);
}

/* 产品操作按钮 */
.product-actions {
    display: flex;
    gap: var(--lemon-space-3);
}

.product-actions .lemon-btn {
    flex: 1;
    justify-content: center;
    font-size: var(--lemon-text-sm);
    padding: var(--lemon-space-3) var(--lemon-space-4);
}

.btn-details {
    background: var(--lemon-gradient-primary);
}

.btn-buy {
    border-color: var(--lemon-primary);
    color: var(--lemon-primary);
}

.btn-buy:hover {
    background: var(--lemon-primary);
    color: var(--lemon-text-light);
}

.btn-download {
    background: var(--lemon-gradient-success);
    color: var(--lemon-text-light);
}

/* 加载更多 */
.load-more-container {
    text-align: center;
    margin-top: var(--lemon-space-8);
}

.load-more-btn {
    padding: var(--lemon-space-4) var(--lemon-space-8);
    font-size: var(--lemon-text-lg);
    min-width: 200px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-title {
        font-size: var(--lemon-text-4xl);
    }

    .page-subtitle {
        font-size: var(--lemon-text-lg);
    }

    .products-filter {
        flex-direction: column;
        gap: var(--lemon-space-4);
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--lemon-space-6);
    }

    .product-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .lemon-page-header {
        padding: var(--lemon-space-12) 0 var(--lemon-space-8);
    }

    .page-title {
        font-size: var(--lemon-text-3xl);
    }

    .products-filter {
        padding: var(--lemon-space-4);
    }

    .product-info {
        padding: var(--lemon-space-4);
    }

    .product-meta {
        flex-direction: column;
        gap: var(--lemon-space-2);
    }

    .price-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--lemon-space-1);
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-card {
    animation: fadeInUp 0.6s ease-out;
}

.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }
.product-card:nth-child(5) { animation-delay: 0.5s; }
.product-card:nth-child(6) { animation-delay: 0.6s; }

/* 加载状态 */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--lemon-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    .product-card,
    .search-btn {
        transition: none;
    }

    .product-card:hover {
        transform: none;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .product-card {
        border: 2px solid var(--lemon-text-primary);
    }

    .badge {
        border: 1px solid currentColor;
    }
}