/**
 * 讨论模块样式
 */

/* ==================== 讨论卡片 ==================== */
.discussion-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.discussion-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.discussion-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.discussion-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.user-name {
    font-weight: 500;
    color: #333;
}

.discussion-time {
    color: #6c757d;
    font-size: 0.8125rem;
}

.stock-tag {
    margin-left: auto;
}

.discussion-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.discussion-title a {
    color: #333;
    text-decoration: none;
    transition: color 0.2s ease;
}

.discussion-title a:hover {
    color: #007bff;
}

.discussion-summary {
    background-color: #f8f9fa;
    padding: 0.75rem;
    border-radius: 0.375rem;
    border-left: 4px solid #007bff;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    color: #495057;
}

.discussion-content-preview {
    color: #6c757d;
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.discussion-content {
    color: #333;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.discussion-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
    flex-wrap: wrap;
    gap: 1rem;
}

.discussion-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.stat-item {
    color: #6c757d;
    font-size: 0.875rem;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.stat-item:hover {
    color: #007bff;
}

.stat-item.liked {
    color: #dc3545;
}

/* ==================== 筛选和排序 ==================== */
.discussion-filters {
    background-color: #fff;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.discussion-filters .form-group {
    margin-bottom: 0;
    flex: 1;
    min-width: 200px;
}

/* ==================== 评论区域 ==================== */
.comments-container {
    margin-top: 2rem;
}

.comment-item {
    padding: 1rem;
    border-bottom: 1px solid #e0e0e0;
    background-color: #fff;
}

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

.comment-reply {
    margin-left: 2rem;
    padding-left: 1rem;
    border-left: 2px solid #e0e0e0;
    background-color: #f8f9fa;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.comment-content {
    color: #333;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.comment-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.comment-replies {
    margin-top: 1rem;
}

.reply-box {
    padding: 0.75rem;
    background-color: #f8f9fa;
    border-radius: 0.375rem;
    margin-top: 0.5rem;
}

/* ==================== 评论表单 ==================== */
.comment-form-container {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

/* ==================== 点赞动画 ==================== */
@keyframes likeAnimation {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.3);
    }
    100% {
        transform: scale(1);
    }
}

.like-item {
    position: relative;
}

.like-item.liked::before {
    content: '❤️';
    position: absolute;
    animation: likePulse 0.5s ease;
}

@keyframes likePulse {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.8;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* ==================== 发布讨论表单 ==================== */
.discussion-form-container {
    max-width: 800px;
    margin: 0 auto;
}

/* ==================== 分页组件 ==================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.pagination .btn {
    min-width: 40px;
}

.pagination .btn.active {
    background-color: #007bff;
    color: #fff;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 767px) {
    .discussion-header {
        flex-direction: column;
    }

    .stock-tag {
        margin-left: 0;
    }

    .discussion-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .discussion-stats {
        justify-content: space-around;
    }

    .comment-reply {
        margin-left: 1rem;
        padding-left: 0.75rem;
    }

    .discussion-filters {
        flex-direction: column;
    }

    .discussion-filters .form-group {
        width: 100%;
    }
}

/* ==================== 加载状态 ==================== */
.discussion-loading {
    text-align: center;
    padding: 2rem;
}

.discussion-empty {
    text-align: center;
    padding: 3rem;
    color: #6c757d;
}