/* 评论区域 */
.comments-section {
    margin-top: 40px;
    padding: 30px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.comments-header {
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.comments-header h3 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: #333;
}

/* 评论表单 */
.comment-form {
    margin-bottom: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    display: flex;
    gap: 15px;
}

.comment-form-avatar {
    flex-shrink: 0;
}

.comment-form-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.comment-form-content {
    flex: 1;
}

.comment-form-header {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.comment-form-username {
    font-weight: 600;
    color: #333;
}

.comment-form-reply-to {
    color: #666;
    font-size: 14px;
}

.comment-form-cancel {
    background: none;
    border: none;
    color: #dc3545;
    cursor: pointer;
    font-size: 14px;
    padding: 2px 6px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.comment-form-cancel:hover {
    background: rgba(220, 53, 69, 0.1);
}

.comment-form-content textarea {
    width: 500%;
    min-height: 100px;
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 20px;
    resize: vertical;
    font-family: inherit;
    font-size: 15px;
    line-height: 1.5;
    transition: border-color 0.2s;
}

.comment-form-content textarea:focus {
    outline: none;
    border-color: #667eea;
}

.comment-form-footer {
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.comment-form-tip {
    color: #666;
    font-size: 12px;
}

.comment-form-submit {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.comment-form-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.comment-form-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 登录提示 */
.comment-login-tip {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    margin-bottom: 30px;
}

.comment-login-tip p {
    margin: 0;
    color: #666;
}

.comment-login-tip a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.comment-login-tip a:hover {
    text-decoration: underline;
}

/* 评论列表 */
.comments-list {
    margin-top: 30px;
}

.comment-item {
    display: flex;
    gap: 15px;
    padding: 20px 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.comment-avatar {
    flex-shrink: 0;
}

.comment-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.comment-content {
    flex: 1;
}

.comment-header {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.comment-author {
    font-weight: 600;
    color: #333;
}

.comment-time {
    color: #666;
    font-size: 12px;
}

.comment-text {
    margin-bottom: 12px;
    line-height: 1.6;
    color: #444;
}

.comment-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.comment-like-btn,
.comment-reply-btn,
.comment-delete-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.comment-like-btn {
    color: #666;
}

.comment-like-btn.liked {
    color: #e74c3c;
}

.comment-like-btn:hover {
    background: rgba(231, 76, 60, 0.1);
}

.comment-reply-btn {
    color: #667eea;
}

.comment-reply-btn:hover {
    background: rgba(102, 126, 234, 0.1);
}

.comment-delete-btn {
    color: #dc3545;
}

.comment-delete-btn:hover {
    background: rgba(220, 53, 69, 0.1);
}

/* 回复列表 */
.comment-replies {
    margin-top: 20px;
    padding-left: 20px;
    border-left: 2px solid #f0f0f0;
}

.comment-reply {
    display: flex;
    gap: 12px;
    padding: 15px 0;
    border-bottom: 1px solid #f8f9fa;
}

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

.comment-reply .comment-avatar img {
    width: 32px;
    height: 32px;
}

.comment-reply .comment-text {
    font-size: 14px;
}

/* 空评论提示 */
.comments-empty {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

/* 加载更多 */
.comments-load-more {
    text-align: center;
    margin-top: 30px;
}

.load-more-btn {
    background: #f8f9fa;
    border: 2px solid #e1e5e9;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    color: #666;
    font-size: 14px;
    transition: all 0.2s;
}

.load-more-btn:hover {
    background: #e1e5e9;
    border-color: #667eea;
    color: #667eea;
}

.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .comments-section {
        padding: 20px;
        margin-top: 20px;
    }
    
    .comment-form {
        flex-direction: column;
        gap: 10px;
    }
    
    .comment-form-avatar {
        align-self: flex-start;
    }
    
    .comment-form-content textarea {
        min-height: 100px;
    }
    
    .comment-item {
        flex-direction: column;
        gap: 10px;
    }
    
    .comment-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .comment-actions {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .comment-replies {
        padding-left: 10px;
    }
}

/* 成功/错误消息 */
.comment-message {
    padding: 10px 15px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 14px;
}

.comment-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.comment-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.comment-message.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* 评论统计 */
.comment-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    font-size: 14px;
}

.comment-stats span {
    color: #666;
}

.comment-stats .stat-number {
    font-weight: 600;
    color: #333;
}

/* 动画效果 */
.comment-item {
    animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 回复表单高亮 */
.comment-item.replying {
    background: rgba(102, 126, 234, 0.05);
    border-radius: 8px;
    padding: 20px;
    margin: 10px 0;
}

/* 点赞动画 */
.comment-like-btn .like-icon {
    transition: transform 0.2s ease;
}

.comment-like-btn:active .like-icon {
    transform: scale(1.2);
}

/* 字符计数器颜色 */
.comment-form-tip .char-warning {
    color: #f39c12;
}

.comment-form-tip .char-danger {
    color: #e74c3c;
}