/**
 * HuSNS Mobile App CSS
 * @version 3.5.0
 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    background: #f5f5f5;
    color: #333;
    -webkit-font-smoothing: antialiased;
}

.mobile-body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.dark-mode {
    background: #1a1a1a;
    color: #e0e0e0;
}

.m-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: #fff;
    border-bottom: 1px solid #eee;
    z-index: 100;
}

.dark-mode .m-header {
    background: #2a2a2a;
    border-bottom-color: #333;
}

.m-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 15px;
}

.m-header-back {
    font-size: 20px;
    color: #333;
    text-decoration: none;
    padding: 10px;
    margin-left: -10px;
}

.dark-mode .m-header-back {
    color: #e0e0e0;
}

.m-header-title {
    font-size: 17px;
    font-weight: 600;
    color: #333;
}

.dark-mode .m-header-title {
    color: #e0e0e0;
}

.m-header-right {
    width: 40px;
}

.m-main {
    flex: 1;
    margin-top: 50px;
    padding-bottom: 60px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.m-tabbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 55px;
    background: #fff;
    border-top: 1px solid #eee;
    display: flex;
    z-index: 100;
}

.dark-mode .m-tabbar {
    background: #2a2a2a;
    border-top-color: #333;
}

.m-tabbar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #999;
    position: relative;
}

.m-tabbar-item.active {
    color: #1890ff;
}

.m-tabbar-icon {
    font-size: 20px;
    margin-bottom: 2px;
}

.m-tabbar-label {
    font-size: 11px;
}

.m-tabbar-publish {
    color: #1890ff;
}

.m-tabbar-icon-publish {
    width: 36px;
    height: 36px;
    background: #1890ff;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 300;
}

.unread-badge {
    position: absolute;
    top: 5px;
    right: 50%;
    transform: translateX(15px);
    background: #ff4d4f;
    color: #fff;
    font-size: 10px;
    padding: 1px 5px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

.post-list {
    padding: 10px;
}

.post-item {
    background: #fff;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 10px;
}

.dark-mode .post-item {
    background: #2a2a2a;
}

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

.post-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 10px;
    flex-shrink: 0;
}

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

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

.post-username {
    font-weight: 500;
    color: #333;
    text-decoration: none;
}

.dark-mode .post-username {
    color: #e0e0e0;
}

.post-time {
    font-size: 12px;
    color: #999;
    margin-left: 8px;
}

.post-content {
    margin-bottom: 10px;
}

.post-text {
    color: #333;
    line-height: 1.6;
    word-break: break-word;
    text-decoration: none;
    display: block;
}

.dark-mode .post-text {
    color: #e0e0e0;
}

.post-images {
    display: grid;
    gap: 4px;
    margin-top: 10px;
}

.post-images-1 {
    grid-template-columns: 1fr;
}

.post-images-2 {
    grid-template-columns: repeat(2, 1fr);
}

.post-images-3,
.post-images-4,
.post-images-5,
.post-images-6,
.post-images-7,
.post-images-8,
.post-images-9 {
    grid-template-columns: repeat(3, 1fr);
}

.post-images img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
}

.post-actions {
    display: flex;
    border-top: 1px solid #f0f0f0;
    padding-top: 10px;
    margin-top: 10px;
}

.dark-mode .post-actions {
    border-top-color: #333;
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 0;
    background: none;
    border: none;
    color: #999;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
}

.action-btn .action-icon {
    margin-right: 4px;
}

.like-btn.liked {
    color: #ff4d4f;
}

.favorite-btn.favorited {
    color: #faad14;
}

/* 转发内容样式 */
.repost-content {
    background: #f5f5f5;
    border-left: 3px solid #1890ff;
    border-radius: 4px;
    padding: 12px;
    margin-top: 10px;
}

.dark-mode .repost-content {
    background: #2a2a2a;
    border-left-color: #1890ff;
}

.repost-header {
    margin-bottom: 8px;
}

.repost-username {
    color: #1890ff;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
}

.repost-text {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

.dark-mode .repost-text {
    color: #aaa;
}

/* 转发页面样式 */
.original-post-preview {
    background: #fff;
    padding: 12px;
    margin-bottom: 10px;
}

.dark-mode .original-post-preview {
    background: #2a2a2a;
}

.original-post {
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    padding: 12px;
    background: #fafafa;
}

.dark-mode .original-post {
    border-color: #333;
    background: #1a1a1a;
}

.original-post-header {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.original-post-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 10px;
}

.original-post-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.original-post-info {
    flex: 1;
}

.original-post-username {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    display: block;
}

.dark-mode .original-post-username {
    color: #fff;
}

.original-post-time {
    font-size: 12px;
    color: #999;
}

.dark-mode .original-post-time {
    color: #666;
}

.original-post-content {
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    margin-bottom: 10px;
}

.dark-mode .original-post-content {
    color: #e0e0e0;
}

.original-post-images {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.original-post-images img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
}

.repost-form-container {
    background: #fff;
    padding: 12px;
}

.dark-mode .repost-form-container {
    background: #2a2a2a;
}

.repost-form {
    display: flex;
    flex-direction: column;
}

.repost-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    min-height: 100px;
    margin-bottom: 12px;
}

.dark-mode .repost-textarea {
    background: #1a1a1a;
    border-color: #333;
    color: #e0e0e0;
}

.repost-textarea:focus {
    outline: none;
    border-color: #1890ff;
}

.repost-actions {
    display: flex;
    justify-content: flex-end;
}

.repost-actions .submit-btn {
    padding: 10px 24px;
    background: #1890ff;
    color: #fff;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
}

.repost-actions .submit-btn:active {
    background: #096dd9;
}

.comment-section {
    background: #fff;
    margin-top: 10px;
    padding: 12px;
}

.dark-mode .comment-section {
    background: #2a2a2a;
}

.comment-list {
    margin-bottom: 15px;
}

.comment-item {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
}

.dark-mode .comment-item {
    border-bottom-color: #333;
}

.comment-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 10px;
    flex-shrink: 0;
}

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

.comment-body {
    flex: 1;
}

.comment-header {
    display: flex;
    align-items: center;
    margin-bottom: 4px;
}

.comment-username {
    font-weight: 500;
    color: #333;
    text-decoration: none;
    font-size: 13px;
}

.dark-mode .comment-username {
    color: #e0e0e0;
}

.comment-time {
    font-size: 11px;
    color: #999;
    margin-left: 8px;
}

.comment-content {
    font-size: 13px;
    color: #666;
    line-height: 1.5;
}

.dark-mode .comment-content {
    color: #aaa;
}

.comment-form {
    display: flex;
    gap: 10px;
}

.comment-form input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 20px;
    font-size: 14px;
    outline: none;
}

.dark-mode .comment-form input {
    background: #333;
    border-color: #444;
    color: #e0e0e0;
}

.comment-form button {
    padding: 8px 16px;
    background: #1890ff;
    color: #fff;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
}

.publish-page {
    padding: 15px;
}

.publish-form textarea {
    width: 100%;
    min-height: 150px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    resize: none;
    outline: none;
}

.dark-mode .publish-form textarea {
    background: #2a2a2a;
    border-color: #333;
    color: #e0e0e0;
}

.publish-images {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.image-item {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: 4px;
    overflow: hidden;
}

.image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: rgba(0,0,0,0.5);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.5);
    color: #fff;
    font-size: 11px;
    padding: 2px;
    text-align: center;
}

.add-image-btn {
    width: 80px;
    height: 80px;
    border: 1px dashed #ddd;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #999;
    cursor: pointer;
}

.dark-mode .add-image-btn {
    border-color: #444;
}

.publish-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
}

.char-count {
    font-size: 12px;
    color: #999;
}

.submit-btn {
    padding: 10px 30px;
    background: #1890ff;
    color: #fff;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
}

.submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.login-page, .register-page {
    padding: 30px 20px;
}

.auth-form {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
}

.dark-mode .auth-form {
    background: #2a2a2a;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    color: #666;
}

.dark-mode .form-group label {
    color: #aaa;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
}

.dark-mode .form-group input {
    background: #333;
    border-color: #444;
    color: #e0e0e0;
}

.form-group input:focus {
    border-color: #1890ff;
}

.auth-btn {
    width: 100%;
    padding: 12px;
    background: #1890ff;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}

.auth-link {
    text-align: center;
    margin-top: 15px;
}

.auth-link a {
    color: #1890ff;
    text-decoration: none;
}

.profile-page {
    padding: 15px;
}

.user-profile-header {
    display: flex;
    align-items: center;
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
}

.dark-mode .user-profile-header {
    background: #2a2a2a;
}

.user-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 15px;
    flex-shrink: 0;
}

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

.user-info {
    flex: 1;
}

.user-name {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.dark-mode .user-name {
    color: #e0e0e0;
}

.user-bio {
    font-size: 13px;
    color: #666;
    margin-bottom: 8px;
}

.dark-mode .user-bio {
    color: #aaa;
}

.user-stats {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: #999;
}

/* 个人中心菜单 */
.profile-menu {
    background: #fff;
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.dark-mode .profile-menu {
    background: #2a2a2a;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #f0f0f0;
    text-decoration: none;
    color: #333;
}

.dark-mode .menu-item {
    border-bottom-color: #333;
    color: #e0e0e0;
}

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

.menu-icon {
    font-size: 20px;
    margin-right: 12px;
    width: 24px;
    text-align: center;
}

.menu-text {
    flex: 1;
    font-size: 14px;
}

.menu-arrow {
    font-size: 18px;
    color: #ccc;
}

.dark-mode .menu-arrow {
    color: #666;
}

/* 退出登录按钮 */
.logout-section {
    padding: 0 15px 15px;
}

.logout-btn {
    width: 100%;
    padding: 12px;
    background: #ff4d4f;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s;
}

.logout-btn:active {
    background: #ff7875;
}

.user-actions {
    background: #fff;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    text-align: center;
}

.dark-mode .user-actions {
    background: #2a2a2a;
}

.follow-btn {
    padding: 8px 30px;
    background: #1890ff;
    color: #fff;
    border: none;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
}

.follow-btn.following {
    background: #f0f0f0;
    color: #666;
}

.dark-mode .follow-btn.following {
    background: #333;
    color: #aaa;
}

.notification-page {
    padding: 15px;
}

.notification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.mark-all-read {
    color: #1890ff;
    font-size: 13px;
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
}

.notification-list {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
}

.dark-mode .notification-list {
    background: #2a2a2a;
}

.notification-item {
    display: flex;
    padding: 12px;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
}

.dark-mode .notification-item {
    border-bottom-color: #333;
}

.notification-item.unread {
    background: #f0f7ff;
}

.dark-mode .notification-item.unread {
    background: #1a2a3a;
}

.notification-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 12px;
    flex-shrink: 0;
}

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

.notification-body {
    flex: 1;
}

.notification-title {
    font-size: 14px;
    color: #333;
    margin-bottom: 4px;
}

.dark-mode .notification-title {
    color: #e0e0e0;
}

.notification-time {
    font-size: 12px;
    color: #999;
}

.loading-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f0f0f0;
    border-top-color: #1890ff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.load-more-btn {
    display: block;
    width: 100%;
    padding: 15px;
    background: none;
    border: none;
    color: #1890ff;
    font-size: 14px;
    cursor: pointer;
}

.m-toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 20px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    border-radius: 20px;
    font-size: 13px;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.m-toast-success {
    background: #52c41a;
}

.m-toast-error {
    background: #ff4d4f;
}

.m-toast.fade-out {
    animation: fadeOut 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes fadeOut {
    from { opacity: 1; transform: translateX(-50%) translateY(0); }
    to { opacity: 0; transform: translateX(-50%) translateY(-10px); }
}

.preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.9);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-container {
    max-width: 100%;
    max-height: 100%;
}

.preview-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
}

.preview-nav {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}

.prev-btn, .next-btn {
    padding: 10px 20px;
    font-size: 24px;
    cursor: pointer;
}

.preview-counter {
    margin: 0 20px;
    font-size: 14px;
}

.empty-state {
    text-align: center;
    padding: 50px 20px;
    color: #999;
}

.tab-bar {
    display: flex;
    background: #fff;
    border-bottom: 1px solid #eee;
    margin-bottom: 10px;
}

.dark-mode .tab-bar {
    background: #2a2a2a;
    border-bottom-color: #333;
}

.tab-item {
    flex: 1;
    padding: 12px;
    text-align: center;
    color: #666;
    text-decoration: none;
    font-size: 14px;
    border-bottom: 2px solid transparent;
}

.dark-mode .tab-item {
    color: #aaa;
}

.tab-item.active {
    color: #1890ff;
    border-bottom-color: #1890ff;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 500;
    border-radius: 50%;
    flex-shrink: 0;
}

.detail-page {
    padding: 15px;
}

.post-detail {
    background: #fff;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
}

.dark-mode .post-detail {
    background: #2a2a2a;
}

.comment-section-title {
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 10px;
    color: #333;
}

.dark-mode .comment-section-title {
    color: #e0e0e0;
}