/* ========== 原有样式（略作调整） ========== */
:root {
    --bg: #f0f0f0;
    --card-bg: #ffffff;
    --text: #1a1a1a;
    --text-secondary: #666;
    --text-light: #999;
    --accent: #07c160;
    --accent-hover: #06ad56;
    --ai-purple: #6c5ce7;
    --danger: #e74c3c;
    --border: #e8e8e8;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.18);
    --radius: 10px;
    --radius-sm: 6px;
    --transition: 0.2s ease;
    --max-width: 540px;
    --input-bg: #f9f9f9;
    --input-border: #e8e8e8;
    --btn-bg: #f5f5f5;
    --btn-hover-bg: #e8e8e8;
    --comment-bg: #fafbfc;
    --likes-bg: #f8fafb;
    --overlay-bg: rgba(0, 0, 0, 0.5);
    --dropdown-bg: #fff;
    --menu-bg: #fff;
    --header-bg: #fff;
    --search-bg: #fff;
}

.delete-comment-btn {
    background: none;
    border: none;
    font-size: 12px;
    color: var(--text-light);
    cursor: pointer;
    padding: 0 4px;
    margin-left: auto;
    transition: color var(--transition);
}

.delete-comment-btn:hover {
    color: var(--danger);
}

.color-examples {
    display: flex;
    gap: 6px;
    margin-top: 6px;
    flex-wrap: wrap;
}

.color-sample {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: 0.2s;
}

.color-sample:hover {
    border-color: var(--text);
    transform: scale(1.15);
}

.dark-mode {
    --bg: #1a1a2e;
    --card-bg: #23233b;
    --input-bg: #2a2a40;
    --input-border: #3a3a55;
    --text: #e0e0e0;
    --text-secondary: #aaa;
    --text-light: #777;
    --border: #3a3a55;
    --accent: #06c167;
    --accent-hover: #05a058;
    --danger: #e74c3c;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --overlay-bg: rgba(0, 0, 0, 0.7);
    --dropdown-bg: #23233b;
    --menu-bg: #2a2a40;
    --comment-bg: #1e1e33;
    --likes-bg: #1e1e33;
    --header-bg: #23233b;
    --search-bg: #23233b;
    --btn-bg: #2a2a40;
    --btn-hover-bg: #3a3a55;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

.app-container {
    width: 100%;
    max-width: var(--max-width);
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.12);
    position: relative;
}

.header {
    background: var(--header-bg);
    padding: 10px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border);
    gap: 8px;
    min-height: 50px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 20px;
    transition: background var(--transition);
    flex-shrink: 1;
    min-width: 0;
}

.header-left:hover {
    background: var(--btn-hover-bg);
}

.header-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 1.5px solid var(--border);
    background: #e0e0e0;
}

.header-avatar-placeholder {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 15px;
    color: #fff;
    letter-spacing: 1px;
}

.header-nickname {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100px;
}

.header-arrow {
    font-size: 10px;
    color: var(--text-light);
    flex-shrink: 0;
}

.header-ai-area {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 20px;
    transition: background var(--transition);
    flex-shrink: 1;
    min-width: 0;
    border: 1.5px solid var(--ai-purple);
    background: rgba(108, 92, 231, 0.06);
}

.header-ai-area:hover {
    background: rgba(108, 92, 231, 0.12);
}

.header-ai-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.header-ai-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--ai-purple);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 80px;
}

.header-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.settings-dropdown {
    position: absolute;
    right: 10px;
    top: 46px;
    background: var(--dropdown-bg);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    z-index: 200;
    min-width: 160px;
    white-space: nowrap;
    animation: slideDown 0.2s ease;
}

.settings-dropdown-item {
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    transition: background var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.settings-dropdown-item:hover {
    background: var(--btn-hover-bg);
}

.settings-dropdown-item+.settings-dropdown-item {
    border-top: 1px solid var(--border);
}

.btn-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--btn-bg);
    cursor: pointer;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    color: var(--text-secondary);
    position: relative;
}

.btn-icon:hover {
    background: var(--btn-hover-bg);
    color: var(--text);
}

.btn-icon:active {
    transform: scale(0.92);
}

.account-dropdown {
    position: fixed;
    /* top / left 由 JS 动态指定 */
    background: var(--dropdown-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 200;
    overflow: hidden;
    animation: slideDown 0.2s ease;
    border: 1px solid var(--border);
    max-height: 60vh;
    overflow-y: auto;
}

.account-dropdown.normal-dropdown {
    min-width: 220px;
    max-width: 300px;
}

.account-dropdown.ai-dropdown {

    min-width: 220px;
    max-width: 300px;
    animation: slideDownCenter 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.account-dropdown-item {
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: background var(--transition);
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    color: var(--text);
}

.account-dropdown-item:hover {
    background: var(--btn-hover-bg);
}

.account-dropdown-item.active {
    background: #f0fdf6;
    color: #333;
}

.account-dropdown-item .check-mark {
    margin-left: auto;
    color: var(--accent);
    font-weight: bold;
    font-size: 15px;
}

.avatar-sm {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
    background: #e0e0e0;
}

.avatar-placeholder-sm {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 12px;
    color: #fff;
}

.account-dropdown-add {
    padding: 12px 14px;
    text-align: center;
    color: var(--accent);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
}

.account-dropdown-add:hover {
    background: var(--btn-hover-bg);
}

.account-dropdown-edit {
    font-size: 10px;
    color: var(--text-light);
    margin-left: 2px;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 10px;
}

/* 让普通账号菜单中的编辑按钮统一贴近右边 */
.account-dropdown.normal-dropdown .account-dropdown-edit {
    margin-left: auto;
}

.account-dropdown.normal-dropdown .account-dropdown-item .check-mark {
    margin-left: 0;
    /* 取消自动居中，让编辑按钮真正靠右 */
}

.account-dropdown-edit:hover {
    background: var(--btn-hover-bg);
    color: var(--text-secondary);
}

.ai-label {
    font-size: 11px;
    color: var(--ai-purple);
    margin-left: 4px;
}

.search-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--search-bg);
    border-bottom: 1px solid var(--border);
}

.search-bar input {
    flex: 1;
    border: 1px solid var(--input-border);
    border-radius: 16px;
    padding: 6px 12px;
    font-size: 13px;
    outline: none;
    background: var(--input-bg);
    color: var(--text);
}

/* 移动端：搜索激活时隐藏右侧按钮组和左侧用户区 */
@media (max-width: 500px) {

    .header.search-active .header-left,
    .header.search-active .header-ai-area,
    .header.search-active .header-actions {
        display: none;
    }

    .header.search-active .search-bar {
        flex: 1;
        margin-left: 8px;
    }
}

.search-bar input:focus {
    border-color: var(--accent);
}

.publish-area {
    background: var(--card-bg);
    margin: 10px 12px;
    border-radius: var(--radius);
    padding: 13px 15px;
    box-shadow: var(--shadow);
    position: relative;
}

.publish-input {
    width: 100%;
    border: none;
    resize: none;
    font-size: 15px;
    line-height: 1.5;
    outline: none;
    font-family: inherit;
    color: var(--text);
    background: transparent;
    min-height: 55px;
}

.publish-input::placeholder {
    color: var(--text-light);
}

.publish-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 8px;
}

.publish-preview-item {
    position: relative;
    max-width: 80px;
    /* 防止图片过宽 */
    max-height: 80px;
    /* 防止图片过高 */
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--input-bg);
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.publish-preview-item img,
.publish-preview-item video {
    width: auto;
    height: auto;
    max-width: 80px;
    max-height: 80px;
    object-fit: contain;
    /* 完全显示图片，不裁剪 */
}

.publish-preview-item .remove-btn {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
}

.publish-preview-item .media-type-badge {
    position: absolute;
    bottom: 3px;
    left: 3px;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 9px;
    padding: 2px 5px;
    border-radius: 8px;
    z-index: 5;
    pointer-events: none;
}

.publish-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 9px;
    flex-wrap: wrap;
    position: relative;
}

.publish-tool-btn {
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 6px 11px;
    border-radius: 16px;
    border: 1.5px solid var(--border);
    background: var(--btn-bg);
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
    transition: all var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.publish-tool-btn:hover {
    border-color: var(--accent);
    background: var(--btn-hover-bg);
}

.publish-tool-btn:active {
    transform: scale(0.94);
}

.btn-publish {
    margin-left: auto;
    padding: 7px 18px;
    border-radius: 18px;
    border: none;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    font-size: 13px;
    transition: all var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.btn-publish:hover {
    background: var(--accent-hover);
    box-shadow: 0 2px 6px rgba(7, 193, 96, 0.3);
}

.btn-publish:disabled {
    background: #ccc;
    cursor: not-allowed;
    box-shadow: none;
}

.file-input-hidden {
    display: none;
}

.publish-char-count {
    font-size: 10px;
    color: var(--text-light);
    margin-left: auto;
    white-space: nowrap;
}

/* === 修复后的质量选择器 === */
#btnQuality {
    position: relative;
}

.quality-wrapper { position: relative; display: inline-block; }
.quality-selector {
    display: none;
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 10px;
    z-index: 300;
    border: 1px solid var(--border);
    white-space: nowrap;
    min-width: 100px;
}

.quality-selector select {
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid var(--border);
    font-size: 12px;
    background: var(--input-bg);
    color: var(--text);
    width: 100%;
}

.timeline {
    flex: 1;
    padding: 0 0 80px 0;
}

.loader-indicator {
    text-align: center;
    padding: 16px;
    color: var(--text-light);
    font-size: 13px;
    display: none;
}

.timeline-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
    font-size: 14px;
}

.timeline-empty .empty-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 10px;
}

.post-card {
    background: var(--card-bg);
    margin: 10px 12px;
    border-radius: var(--radius);
    padding: 13px 14px;
    box-shadow: var(--shadow);
    animation: fadeInUp 0.35s ease;
    position: relative;
}

.post-card.pinned-card {
    border-left: 3px solid #f39c12;
}

.pin-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 16px;
    color: #f39c12;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(14px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.post-header {
    display: flex;
    gap: 9px;
    align-items: flex-start;
}

.post-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    background: #e0e0e0;
    border: 1.5px solid var(--border);
}

.post-avatar-placeholder {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    color: #fff;
}

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

.post-nickname {
    font-weight: 600;
    font-size: 14px;
    color: #4a6d8c;
}

.dark-mode .post-nickname {
    color: #7aa0c0;
}

.post-time {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 2px;
}

.post-menu-btn {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 17px;
    color: var(--text-light);
    flex-shrink: 0;
}

.post-menu-btn:hover {
    background: var(--btn-hover-bg);
    color: var(--text);
}

.post-menu-dropdown {
    position: absolute;
    right: 14px;
    top: 38px;
    background: var(--menu-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 50;
    overflow: hidden;
    border: 1px solid var(--border);
    min-width: 115px;
}

.post-menu-dropdown button {
    display: block;
    width: 100%;
    padding: 9px 14px;
    border: none;
    background: transparent;
    font-size: 12px;
    text-align: left;
    transition: background var(--transition);
    font-family: inherit;
    color: var(--text);
}

.post-menu-dropdown button:hover {
    background: var(--btn-hover-bg);
}

.post-menu-dropdown button.danger {
    color: var(--danger);
}

.post-text {
    margin-top: 8px;
    font-size: 14px;
    line-height: 1.6;
    word-break: break-word;
    white-space: pre-wrap;
    color: var(--text);
}

.post-images-grid {
    display: grid;
    gap: 4px;
    margin-top: 8px;
    grid-template-columns: repeat(3, 1fr);
}

.post-images-grid.single-col {
    grid-template-columns: 1fr;
    max-width: 260px;
}

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

.post-image-wrapper {
    position: relative;
    width: 100%;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    background: var(--input-bg);
}

/* 多图（3格/2格）保持正方形裁剪，单图自适应比例 */
.post-images-grid:not(.single-col) .post-image-wrapper {
    aspect-ratio: 1;
}

.post-image-wrapper:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 多图时图片填充裁剪 */
.post-images-grid:not(.single-col) .post-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 单图时自适应原始比例，最大高度限制 */
.post-images-grid.single-col .post-image-wrapper img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    display: block;
}

.image-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    pointer-events: none;
}

.post-video-wrapper {
    margin-top: 8px;
    border-radius: 4px;
    overflow: hidden;
    background: #000;
}

.post-video-wrapper video {
    width: 100%;
    max-height: 340px;
    display: block;
}

.post-actions {
    display: flex;
    gap: 16px;
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
    background: none;
    border: none;
    font-family: inherit;
    padding: 3px 0;
}

.action-btn.liked {
    color: #e74c3c;
}

.post-likes-bar {
    margin-top: 6px;
    font-size: 11px;
    color: #5b7a9a;
    background: var(--likes-bg);
    padding: 7px 9px;
    border-radius: 4px;
}

.post-comments {
    margin-top: 5px;
    background: var(--comment-bg);
    border-radius: 4px;
    padding: 5px 9px;
}

/* ========== 评论折叠功能 ========== */
.comments-collapsed {
    display: none;
}

.comments-collapsed.expanded {
    display: block;
    animation: commentSlideDown 0.3s ease;
}

@keyframes commentSlideDown {
    from {
        opacity: 0;
        max-height: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        max-height: 2000px;
        transform: translateY(0);
    }
}

.comments-toggle-btn {
    display: block;
    width: 100%;
    padding: 6px 0;
    border: none;
    background: none;
    color: var(--accent);
    font-size: 12px;
    cursor: pointer;
    font-family: inherit;
    text-align: center;
    transition: all var(--transition);
    border-top: 1px solid var(--border);
    margin-top: 2px;
    line-height: 1.4;
}

.comments-toggle-btn:hover {
    background: rgba(7, 193, 96, 0.06);
    color: var(--accent-hover);
}

.comments-toggle-btn:active {
    transform: scale(0.98);
}

.comments-toggle-btn .toggle-arrow {
    display: inline-block;
    transition: transform 0.3s ease;
    margin-left: 2px;
    font-size: 10px;
}

.comments-expand-btn .toggle-arrow {
    transform: rotate(0deg);
}

.comments-collapse-btn .toggle-arrow {
    transform: rotate(0deg);
}

.comments-toggle-btn .toggle-count {
    font-weight: 600;
    margin: 0 2px;
}

/* 移动端适配 */
@media (max-width: 500px) {
    .comments-toggle-btn {
        padding: 8px 0;
        font-size: 13px;
    }
}

/* 桌面端悬停增强 */
@media (min-width: 501px) {
    .comments-toggle-btn:hover {
        border-radius: 4px;
    }
}

.comment-item {
    font-size: 12px;
    padding: 3px 0;
    word-break: break-word;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.comment-content {
    flex: 1;
}

.comment-user {
    font-weight: 600;
    color: #4a6d8c;
}

.dark-mode .comment-user {
    color: #7aa0c0;
}

.comment-time {
    font-size: 9px;
    color: var(--text-light);
    margin-left: 5px;
}

.reply-btn {
    font-size: 10px;
    color: var(--text-light);
    cursor: pointer;
    border: none;
    background: none;
    padding: 0 4px;
    transition: color var(--transition);
}

.reply-btn:hover {
    color: var(--accent);
}

.user-badge {
    display: inline-block;
    background: #888;
    color: #fff;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 8px;
    margin-left: 4px;
    font-weight: 600;
    vertical-align: middle;
}

.ai-comment-text {
    color: var(--text);
}

.comment-input-row {
    display: flex;
    gap: 5px;
    margin-top: 7px;
    align-items: center;
    padding: 6px 0;
    border-top: 1px solid var(--border);
}

.comment-input-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    background: #e0e0e0;
    border: 1px solid var(--border);
}

.comment-input-avatar-placeholder {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.comment-input-row input {
    flex: 1;
    border: 1px solid var(--input-border);
    border-radius: 14px;
    padding: 6px 10px;
    font-size: 12px;
    outline: none;
    background: var(--input-bg);
    color: var(--text);
    min-width: 0;
}

.comment-submit-btn,
.ai-generate-btn {
    padding: 6px 12px;
    border-radius: 14px;
    border: none;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.comment-submit-btn {
    background: var(--accent);
    color: #fff;
}

.ai-generate-btn {
    background: var(--btn-bg);
    color: var(--text-secondary);
}

.ai-send-btn {
    background: var(--ai-purple) !important;
}

.btn-back-to-top {
    position: fixed;
    bottom: 26px;
    right: 18px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    font-size: 20px;
    cursor: pointer;
    z-index: 90;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.btn-back-to-top:hover {
    background: var(--btn-hover-bg);
    color: var(--text);
    transform: translateY(-2px);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-dialog {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 18px 20px;
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    max-height: 85vh;
    overflow-y: auto;
    color: var(--text);
}

.modal-dialog h3 {
    font-size: 16px;
    margin-bottom: 12px;
    text-align: center;
}

.modal-dialog label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 9px 0 3px;
    display: block;
}

.modal-dialog input,
.modal-dialog textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1.5px solid var(--input-border);
    border-radius: 8px;
    font-size: 13px;
    font-family: inherit;
    outline: none;
    resize: vertical;
    background: var(--input-bg);
    color: var(--text);
}

.modal-dialog .btn-row {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.modal-dialog .btn {
    padding: 8px 18px;
    border-radius: 18px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
}

.modal-dialog .btn-cancel {
    background: var(--btn-bg);
    color: var(--text-secondary);
}

.modal-dialog .btn-save {
    background: var(--accent);
    color: #fff;
}

.modal-dialog .btn-danger {
    background: var(--card-bg);
    color: var(--danger);
    border: 1.5px solid var(--danger);
}

.hint-text {
    font-size: 10px;
    color: var(--text-light);
    margin-top: 3px;
}

/* 内置头像选择器 */
.builtin-avatar-list {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.builtin-av {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--input-bg);
    transition: all 0.2s;
    overflow: hidden;
}

.builtin-av:hover {
    border-color: var(--accent);
    transform: scale(1.1);
}

.builtin-av img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.toast {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: #fff;
    padding: 9px 20px;
    border-radius: 18px;
    font-size: 13px;
    z-index: 2000;
    pointer-events: none;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 1.8s forwards;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-28px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
        transform: translateX(-50%) translateY(-18px);
    }
}

/* Markdown 样式 */
.post-text a,
.comment-content a {
    color: var(--accent);
    text-decoration: underline;
}

.post-text code,
.comment-content code {
    background: var(--input-bg);
    padding: 2px 5px;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: monospace;
}

.post-text del,
.comment-content del {
    opacity: 0.6;
}

.spoiler {
    background: #333;
    color: transparent;
    border-radius: 4px;
    padding: 0 2px;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.spoiler:hover,
.spoiler:focus,
.spoiler:active {
    background: var(--input-bg);
    color: inherit;
    user-select: text;
}

/* 备份二级菜单 */

/* ========== 随机AI模式样式 ========== */
.random-ai-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, rgba(108,92,231,0.06), rgba(253,121,168,0.06));
}
.random-ai-toggle-row .toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--ai-purple);
}
.random-ai-toggle-row .toggle-label .dice-icon {
    font-size: 15px;
    animation: none;
}
.random-ai-toggle-row.active .toggle-label .dice-icon {
    animation: dice-spin 1.5s ease-in-out infinite;
}
@keyframes dice-spin {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(15deg); }
    75% { transform: rotate(-15deg); }
}
.toggle-switch {
    position: relative;
    width: 40px;
    height: 22px;
    background: #ccc;
    border-radius: 11px;
    cursor: pointer;
    transition: background 0.3s;
    flex-shrink: 0;
}
.toggle-switch.active {
    background: var(--ai-purple);
}
.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-switch.active::after {
    transform: translateX(18px);
}

/* 活跃度标签 */
.ai-activity-badge {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 10px;
    color: var(--text-light);
    background: var(--input-bg);
    padding: 1px 6px;
    border-radius: 8px;
    margin-left: 4px;
    white-space: nowrap;
}
.ai-activity-badge.zero {
    color: var(--danger);
    background: rgba(231,76,60,0.08);
}

/* 活跃度滑块 */
.activity-slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 4px;
}
.activity-slider-row input[type="range"] {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border);
    border-radius: 2px;
    outline: none;
}
.activity-slider-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--ai-purple);
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(108,92,231,0.3);
}
.activity-slider-row .activity-value {
    font-size: 13px;
    font-weight: 700;
    color: var(--ai-purple);
    min-width: 28px;
    text-align: center;
}
.activity-hint {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 2px;
}

/* AI 思考中提示条 */
.ai-thinking-bar {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: linear-gradient(90deg, rgba(108,92,231,0.08), rgba(253,121,168,0.08), rgba(108,92,231,0.08));
    background-size: 200% 100%;
    animation: thinking-shimmer 2s linear infinite;
    border-radius: 8px;
    margin: 0 10px;
    font-size: 12px;
    color: var(--ai-purple);
    font-weight: 500;
}
.ai-thinking-bar.visible {
    display: flex;
}
.ai-thinking-bar .thinking-dots::after {
    content: '';
    animation: thinking-dots-anim 1.4s steps(4, end) infinite;
}
@keyframes thinking-dots-anim {
    0% { content: ''; }
    25% { content: '.'; }
    50% { content: '..'; }
    75% { content: '...'; }
}
@keyframes thinking-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.ai-thinking-bar .thinking-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
    animation: thinking-pulse 1s ease-in-out infinite;
}
@keyframes thinking-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.7; }
}

/* 随机模式头部标识 */
.header-ai-area.random-mode {
    border-color: #e17055;
    background: rgba(225,112,85,0.08);
}
.header-ai-area.random-mode .header-ai-icon {
    animation: dice-spin 2s ease-in-out infinite;
}
.header-ai-area.random-mode .header-ai-name {
    color: #e17055;
}

.toast-bottom {
    top: auto;
    bottom: 80px;
    animation: toastInBottom 0.3s ease, toastOutBottom 0.3s ease 1.8s forwards;
}

@keyframes toastInBottom {
    from { opacity: 0; transform: translateX(-50%) translateY(28px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes toastOutBottom {
    from { opacity: 1; }
    to { opacity: 0; transform: translateX(-50%) translateY(18px); }
}

.btn-cancel-edit {
    padding: 7px 18px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: var(--btn-bg);
    color: var(--text-light);
    font-weight: 500;
    cursor: pointer;
    font-size: 13px;
    transition: all var(--transition);
    font-family: inherit;
    white-space: nowrap;
    margin-right: 6px;
}
.btn-cancel-edit:hover {
    background: var(--input-bg);
    color: var(--text);
}

.modal-dialog-sm { max-width: 360px; padding: 16px 18px; }