/* 问答版块样式 */

/* 问答首页 */
.qa-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 公告样式 */
.announcement-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.announcement-icon {
    font-size: 48px;
    opacity: 0.8;
}

.announcement-content h3 {
    margin: 0 0 10px 0;
    font-size: 24px;
}

.announcement-content p {
    margin: 0 0 10px 0;
    opacity: 0.9;
    line-height: 1.6;
}

.announcement-content small {
    opacity: 0.7;
}

/* 问答头部 */
.qa-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.qa-header h1 {
    margin: 0;
    font-size: 32px;
    color: #2c3e50;
}

.qa-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.status-filter {
    display: flex;
    gap: 10px;
}

.filter-btn {
    padding: 8px 16px;
    border: 1px solid #ddd;
    border-radius: 20px;
    text-decoration: none;
    color: #666;
    transition: all 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
    background: #3498db;
    color: white;
    border-color: #3498db;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-success {
    background: #27ae60;
    color: white;
}

.btn-small {
    padding: 6px 12px;
    font-size: 14px;
}

/* 问题列表 */
.questions-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.question-item {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 25px;
    transition: all 0.3s;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.question-item:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.question-status {
    flex-shrink: 0;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge.solved {
    background: #d5ffe8;
    color: #27ae60;
}

.status-badge.pending {
    background: #fff3cd;
    color: #856404;
}

.question-content {
    flex: 1;
}

.question-title {
    margin: 0 0 15px 0;
    font-size: 20px;
}

.question-title a {
    color: #2c3e50;
    text-decoration: none;
}

.question-title a:hover {
    color: #3498db;
}

.question-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.question-stats {
    display: flex;
    gap: 20px;
    color: #666;
    font-size: 14px;
}

.question-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.question-author {
    text-align: right;
    color: #666;
    font-size: 14px;
}

.author-name {
    font-weight: 500;
    color: #2c3e50;
}

.post-time {
    display: block;
    font-size: 12px;
    opacity: 0.8;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    margin: 0 0 10px 0;
    color: #2c3e50;
}

/* 问题详情页 */
.question-detail-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.question-header {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.question-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
}

.question-status-badge.solved {
    background: #d5ffe8;
    color: #27ae60;
}

.question-status-badge.pending {
    background: #fff3cd;
    color: #856404;
}

.question-title {
    margin: 0 0 20px 0;
    font-size: 28px;
    color: #2c3e50;
    line-height: 1.4;
}

.question-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.author-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.author-avatar-small {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
}

.author-details {
    display: flex;
    flex-direction: column;
}

.question-content {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.question-body {
    line-height: 1.8;
    color: #2c3e50;
    margin-bottom: 20px;
}

.question-actions {
    display: flex;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.btn-small {
    padding: 6px 12px;
    font-size: 14px;
    border-radius: 4px;
}

.btn-danger {
    background: #e74c3c;
    color: white;
    border: none;
    cursor: pointer;
}

.btn-danger:hover {
    background: #c0392b;
}

/* 回答区域 */
.answers-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.section-title {
    margin: 0 0 30px 0;
    font-size: 24px;
    color: #2c3e50;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 15px;
}

.answers-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.answer-item {
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 25px;
    position: relative;
}

.answer-item.best-answer {
    border-color: #27ae60;
    background: #f8fff8;
}

.best-answer-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: #27ae60;
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

.answer-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.answer-content {
    line-height: 1.8;
    color: #2c3e50;
    margin-bottom: 20px;
}

/* 回复区域 */
.replies-section {
    border-top: 1px solid #f0f0f0;
    padding-top: 20px;
    margin-top: 20px;
}

.replies-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.reply-item {
    display: flex;
    gap: 12px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.reply-content {
    flex: 1;
}

.reply-header {
    margin-bottom: 8px;
    font-size: 14px;
}

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

.reply-text {
    line-height: 1.6;
    color: #2c3e50;
}

.reply-form textarea,
.add-answer textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
}

.reply-form textarea:focus,
.add-answer textarea:focus {
    outline: none;
    border-color: #3498db;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* 发布问题页 */
.ask-question-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.page-header {
    text-align: center;
    margin-bottom: 40px;
}

.page-header h1 {
    margin: 0 0 10px 0;
    font-size: 32px;
    color: #2c3e50;
}

.page-header p {
    color: #666;
    font-size: 16px;
}

.question-form {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.5;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.char-count {
    display: block;
    text-align: right;
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.page-btn {
    padding: 8px 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-decoration: none;
    color: #666;
    transition: all 0.3s;
}

.page-btn:hover,
.page-btn.active {
    background: #3498db;
    color: white;
    border-color: #3498db;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .qa-container,
    .question-detail-container,
    .ask-question-container {
        padding: 10px;
    }
    
    .announcement-banner {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    
    .qa-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .qa-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    
    .question-item {
        flex-direction: column;
        padding: 20px;
    }
    
    .question-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .question-stats {
        flex-wrap: wrap;
    }
}