/* 留言板页面样式 */
.message-board-section {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.message-board-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin-top: 30px;
}

/* 留言表单样式 */
.message-form-container {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 90px;
}

.message-form-container h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.message-form-container h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #444;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(19, 135, 192, 0.2);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 10px;
    cursor: pointer;
}

/* 留言列表样式 */
.messages-container {
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.messages-container h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.messages-container h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
}

.messages-filter {
    margin-bottom: 20px;
    text-align: right;
}

.messages-filter select {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    background-color: #f9f9f9;
    cursor: pointer;
}

.messages-list {
    max-height: 600px;
    overflow-y: auto;
    padding-right: 10px;
}

.message-item {
    background-color: #f9f9f9;
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    position: relative;
}

.message-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.message-author {
    font-weight: 600;
    color: var(--primary-color);
}

.message-date {
    font-size: 0.85rem;
    color: #777;
}

.message-subject {
    font-weight: 600;
    margin-bottom: 10px;
}

.message-content {
    color: #444;
    line-height: 1.6;
}

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

.message-actions button {
    background: none;
    border: none;
    color: #777;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
}

.message-actions button:hover {
    color: var(--primary-color);
}

.message-like.active {
    color: #e74c3c;
}

.message-reply-form {
    background-color: #f0f0f0;
    padding: 15px;
    border-radius: var(--border-radius);
    margin-top: 15px;
    display: none;
}

.message-reply-form.active {
    display: block;
}

.message-reply-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    resize: vertical;
    height: 80px;
    margin-bottom: 10px;
}

.message-reply-form button {
    background-color: var(--primary-color);
    color: var(--light-text);
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
}

.message-reply-form button:hover {
    background-color: var(--accent-color);
}

.message-replies {
    margin-top: 15px;
    padding-left: 20px;
    border-left: 2px solid #eee;
}

.message-reply {
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 10px;
}

.message-reply-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

.reply-author {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.reply-date {
    font-size: 0.8rem;
    color: #777;
}

.reply-content {
    font-size: 0.95rem;
    color: #444;
}

/* 社区准则样式 */
.community-guidelines {
    padding: 60px 0;
    background-color: var(--secondary-color);
}

.guidelines-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--light-text);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.guidelines-content h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.guidelines-content p {
    margin-bottom: 20px;
    color: #444;
}

.guidelines-content ul {
    list-style: none;
}

.guidelines-content ul li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.guidelines-content ul li i {
    color: #2ecc71;
    font-size: 1.1rem;
}

/* 通知样式 */
.notification {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: white;
    padding: 15px 25px;
    border-radius: 5px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    transition: bottom 0.3s ease;
}

.notification.active {
    bottom: 20px;
}

/* 响应式设计 */
@media screen and (max-width: 992px) {
    .message-board-container {
        grid-template-columns: 1fr;
    }
    
    .message-form-container {
        position: static;
    }
}

@media screen and (max-width: 768px) {
    .message-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .message-date {
        margin-top: 5px;
    }
    
    .message-actions {
        justify-content: flex-start;
    }
}