/**
 * RongCaiXuan Layout Assistant - 前端样式
 */

/* ============================================
   基础变量
   ============================================ */
:root {
    --rcx-primary: #3b82f6;
    --rcx-primary-dark: #2563eb;
    --rcx-text: #1e293b;
    --rcx-text-secondary: #64748b;
    --rcx-text-muted: #94a3b8;
    --rcx-bg: #ffffff;
    --rcx-bg-secondary: #f8fafc;
    --rcx-border: #e2e8f0;
    --rcx-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --rcx-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.12);
    --rcx-radius: 12px;
    --rcx-radius-sm: 8px;
    --rcx-transition: all 0.3s ease;
}

/* ============================================
   专题卡片
   ============================================ */
.rcx-featured-cats {
    margin: 20px 0;
}

.rcx-cats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.rcx-cat-card {
    position: relative;
    border-radius: var(--rcx-radius);
    overflow: hidden;
    box-shadow: var(--rcx-shadow);
    transition: var(--rcx-transition);
}

.rcx-cat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--rcx-shadow-hover);
}

.rcx-cat-link {
    display: block;
    text-decoration: none;
}

.rcx-cat-image {
    position: relative;
    padding-top: 60%;
    overflow: hidden;
}

.rcx-cat-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.rcx-cat-card:hover .rcx-cat-image img {
    transform: scale(1.1);
}

.rcx-cat-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px 15px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
}

.rcx-cat-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* ============================================
   会员反馈展示模块 (核心功能)
   ============================================ */
.rcx-member-feedback-module {
    margin: 32px 0;
    padding: 24px;
    background: var(--rcx-bg-secondary);
    border-radius: 16px;
}

.rcx-module-header {
    text-align: center;
    margin-bottom: 24px;
}

.rcx-module-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--rcx-text);
    margin: 0 0 8px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.rcx-module-subtitle {
    font-size: 14px;
    color: var(--rcx-text-secondary);
    margin: 0;
}

.rcx-empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--rcx-text-muted);
}

/* 反馈容器 - 响应式网格 */
.rcx-feedback-container {
    display: grid;
    gap: 20px;
}

.rcx-feedback-container.rcx-cols-1 { grid-template-columns: 1fr; }
.rcx-feedback-container.rcx-cols-2 { grid-template-columns: repeat(2, 1fr); }
.rcx-feedback-container.rcx-cols-3 { grid-template-columns: repeat(3, 1fr); }
.rcx-feedback-container.rcx-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* 反馈卡片 */
.rcx-feedback-card {
    background: var(--rcx-bg);
    border-radius: var(--rcx-radius);
    box-shadow: var(--rcx-shadow);
    transition: var(--rcx-transition);
    overflow: hidden;
}

.rcx-feedback-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--rcx-shadow-hover);
}

/* 卡片头部 - 用户信息 */
.rcx-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--rcx-border);
}

.rcx-avatar-wrapper {
    flex-shrink: 0;
}

.rcx-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--rcx-bg-secondary);
}

.rcx-avatar.rcx-avatar-default {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
}

.rcx-avatar.rcx-avatar-default svg {
    width: 28px;
    height: 28px;
    color: var(--rcx-text-muted);
}

.rcx-user-info {
    flex: 1;
    min-width: 0;
}

.rcx-user-name {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--rcx-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.rcx-timestamp {
    display: block;
    font-size: 12px;
    color: var(--rcx-text-muted);
    margin-top: 2px;
}

/* 卡片主体 - 评论内容 */
.rcx-card-body {
    padding: 16px;
}

.rcx-comment-content {
    font-size: 14px;
    line-height: 1.7;
    color: var(--rcx-text-secondary);
}

.rcx-comment-content p {
    margin: 0 0 12px;
}

.rcx-comment-content p:last-child {
    margin-bottom: 0;
}

/* 卡片媒体区 - PPT图片展示 */
.rcx-card-media {
    padding: 0 16px 16px;
}

.rcx-images-grid {
    display: grid;
    gap: 8px;
}

.rcx-images-grid[data-count="1"] {
    grid-template-columns: 1fr;
}

.rcx-images-grid[data-count="2"] {
    grid-template-columns: repeat(2, 1fr);
}

.rcx-images-grid[data-count="3"] {
    grid-template-columns: repeat(3, 1fr);
}

.rcx-images-grid[data-count="4"],
.rcx-images-grid[data-count="5"],
.rcx-images-grid[data-count="6"] {
    grid-template-columns: repeat(2, 1fr);
}

.rcx-images-grid[data-count="4"] .rcx-image-item:first-child {
    grid-column: span 2;
}

.rcx-image-item {
    position: relative;
    border-radius: var(--rcx-radius-sm);
    overflow: hidden;
    cursor: pointer;
    min-height: 80px;
    background: var(--rcx-bg-secondary);
}

.rcx-preview-img {
    width: 100%;
    height: 100%;
    min-height: 120px;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.rcx-image-item:hover .rcx-preview-img {
    transform: scale(1.05);
}

.rcx-image-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.rcx-image-item:hover .rcx-image-overlay {
    opacity: 1;
}

.rcx-image-overlay svg {
    width: 32px;
    height: 32px;
    color: #fff;
}

/* 图片懒加载占位 */
.rcx-preview-img.lazy,
.rcx-avatar.lazy {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.rcx-preview-img.lazy.loaded,
.rcx-avatar.lazy.loaded {
    opacity: 1;
}

/* ============================================
   Lightbox 图片放大
   ============================================ */
.rcx-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.rcx-lightbox-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--rcx-transition);
}

.rcx-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.rcx-lightbox-close svg {
    width: 24px;
    height: 24px;
    color: #fff;
}

.rcx-lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
}

.rcx-lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--rcx-radius-sm);
}

/* ============================================
   用户反馈网格 (旧版)
   ============================================ */
.rcx-feedback-section {
    margin: 30px 0;
    padding: 30px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 16px;
}

.rcx-feedback-grid {
    display: grid;
    gap: 20px;
}

.rcx-feedback-grid.rcx-cols-1 { grid-template-columns: 1fr; }
.rcx-feedback-grid.rcx-cols-2 { grid-template-columns: repeat(2, 1fr); }
.rcx-feedback-grid.rcx-cols-3 { grid-template-columns: repeat(3, 1fr); }
.rcx-feedback-grid.rcx-cols-4 { grid-template-columns: repeat(4, 1fr); }

.rcx-feedback-item {
    background: #fff;
    border-radius: var(--rcx-radius);
    padding: 24px;
    box-shadow: var(--rcx-shadow);
    transition: var(--rcx-transition);
}

.rcx-feedback-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--rcx-shadow-hover);
}

.rcx-feedback-content {
    position: relative;
    margin-bottom: 20px;
}

.rcx-quote-icon {
    position: absolute;
    top: -10px;
    left: -5px;
    font-size: 48px;
    color: var(--rcx-border);
    font-family: Georgia, serif;
    line-height: 1;
}

.rcx-feedback-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--rcx-text-secondary);
    position: relative;
    z-index: 1;
}

.rcx-feedback-user {
    display: flex;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--rcx-border);
}

.rcx-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 12px;
    border: 2px solid #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.rcx-user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rcx-avatar-placeholder {
    background: var(--rcx-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.rcx-avatar-placeholder .dashicons {
    font-size: 24px;
    color: var(--rcx-text-muted);
}

/* ============================================
   工具预览
   ============================================ */
.rcx-tool-preview {
    margin: 30px 0;
    padding: 30px;
    background: #fff;
    border-radius: var(--rcx-radius);
    box-shadow: var(--rcx-shadow);
}

/* ============================================
   CTA按钮
   ============================================ */
.rcx-cta-button-wrap {
    text-align: center;
    margin: 30px 0;
}

.rcx-cta-button {
    display: inline-block;
    padding: 16px 48px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--rcx-transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    min-height: 44px;
    min-width: 44px;
}

.rcx-cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    opacity: 0.9;
}

/* ============================================
   最新文章列表
   ============================================ */
.rcx-latest-posts {
    margin: 30px 0;
}

.rcx-section-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--rcx-text);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--rcx-border);
}

.rcx-posts-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.rcx-post-item {
    background: #fff;
    border-radius: var(--rcx-radius-sm);
    padding: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: var(--rcx-transition);
}

.rcx-post-item:hover {
    box-shadow: var(--rcx-shadow);
}

.rcx-post-link {
    text-decoration: none;
    display: block;
}

.rcx-post-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--rcx-text);
    margin: 0 0 8px;
    transition: color 0.3s ease;
}

.rcx-post-item:hover .rcx-post-title {
    color: var(--rcx-primary);
}

.rcx-post-date {
    display: block;
    font-size: 13px;
    color: var(--rcx-text-muted);
    margin-bottom: 8px;
}

.rcx-post-excerpt {
    font-size: 14px;
    color: var(--rcx-text-secondary);
    margin: 0;
    line-height: 1.6;
}

.rcx-view-all {
    text-align: center;
    margin-top: 20px;
}

.rcx-view-all a {
    display: inline-block;
    padding: 10px 24px;
    background: var(--rcx-bg-secondary);
    color: var(--rcx-text-secondary);
    text-decoration: none;
    border-radius: var(--rcx-radius-sm);
    font-size: 14px;
    transition: var(--rcx-transition);
    min-height: 44px;
    line-height: 24px;
}

.rcx-view-all a:hover {
    background: var(--rcx-border);
    color: var(--rcx-text);
}

/* ============================================
   专题文章网格
   ============================================ */
.rcx-topic-grid {
    margin: 30px 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.rcx-topic-section {
    background: #fff;
    border-radius: var(--rcx-radius);
    padding: 24px;
    box-shadow: var(--rcx-shadow);
}

.rcx-topic-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--rcx-border);
}

.rcx-topic-title a {
    text-decoration: none;
    color: var(--rcx-text);
    transition: color 0.3s ease;
}

.rcx-topic-title a:hover {
    color: var(--rcx-primary);
}

.rcx-topic-posts {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rcx-topic-post {
    padding: 12px;
    background: var(--rcx-bg-secondary);
    border-radius: var(--rcx-radius-sm);
    transition: var(--rcx-transition);
}

.rcx-topic-post:hover {
    background: var(--rcx-border);
}

.rcx-topic-post a {
    text-decoration: none;
    display: block;
}

.rcx-topic-post .rcx-post-title {
    font-size: 15px;
    margin-bottom: 6px;
}

.rcx-topic-post .rcx-post-date {
    font-size: 12px;
    margin-bottom: 6px;
}

.rcx-topic-post .rcx-post-excerpt {
    font-size: 13px;
}

.rcx-topic-more {
    text-align: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--rcx-border);
}

.rcx-topic-more a {
    color: var(--rcx-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.rcx-topic-more a:hover {
    color: var(--rcx-primary);
}

/* ============================================
   响应式设计
   ============================================ */

/* 平板端 (768px - 1023px) */
@media (max-width: 1023px) {
    .rcx-cats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .rcx-topic-grid {
        grid-template-columns: 1fr;
    }
    
    .rcx-feedback-container.rcx-cols-3,
    .rcx-feedback-container.rcx-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动端 (≤767px) */
@media (max-width: 767px) {
    .rcx-cats-grid {
        grid-template-columns: 1fr;
    }
    
    .rcx-feedback-grid.rcx-cols-2,
    .rcx-feedback-grid.rcx-cols-3,
    .rcx-feedback-grid.rcx-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .rcx-feedback-container.rcx-cols-2,
    .rcx-feedback-container.rcx-cols-3,
    .rcx-feedback-container.rcx-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .rcx-feedback-section {
        padding: 20px;
    }
    
    .rcx-feedback-item {
        padding: 16px;
    }
    
    .rcx-cta-button {
        padding: 14px 36px;
        font-size: 16px;
    }
    
    .rcx-topic-section {
        padding: 16px;
    }
    
    .rcx-member-feedback-module {
        padding: 16px;
    }
    
    .rcx-module-title {
        font-size: 20px;
    }
    
    .rcx-card-header {
        padding: 12px;
    }
    
    .rcx-card-body {
        padding: 12px;
    }
    
    .rcx-card-media {
        padding: 0 12px 12px;
    }
    
    .rcx-images-grid[data-count="4"] .rcx-image-item:first-child {
        grid-column: span 1;
    }
    
    .rcx-images-grid[data-count="4"],
    .rcx-images-grid[data-count="5"],
    .rcx-images-grid[data-count="6"] {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 小屏手机 (≤480px) */
@media (max-width: 480px) {
    .rcx-images-grid[data-count="2"],
    .rcx-images-grid[data-count="3"] {
        grid-template-columns: 1fr;
    }
    
    .rcx-preview-img {
        min-height: 150px;
    }
}