/* ==================== CSS 变量 ==================== */
:root {
    /* 浅色主题 */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e5e5e5;
    --bg-hover: #f0f0f0;
    --text-primary: #171717;
    --text-secondary: #525252;
    --text-tertiary: #737373;
    --border-color: #e5e5e5;
    --border-hover: #d4d4d4;
    --accent: #171717;
    --accent-hover: #404040;
    --accent-light: #f5f5f5;
    --error: #dc2626;
    --error-bg: rgba(220, 38, 38, 0.1);
    --success: #16a34a;
    --success-bg: rgba(22, 163, 74, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --info: #2563eb;
    --info-bg: rgba(37, 99, 235, 0.1);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --sidebar-width: 280px;
    --header-height: 60px;
    --input-bar-height: 140px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* 深色主题 */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #171717;
    --bg-tertiary: #262626;
    --bg-hover: #1f1f1f;
    --text-primary: #fafafa;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --border-color: #262626;
    --border-hover: #404040;
    --accent: #fafafa;
    --accent-hover: #e5e5e5;
    --accent-light: #262626;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
}

/* ==================== 重置与基础 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    outline: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==================== 应用布局 ==================== */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* ==================== 顶部导航 ==================== */
.header {
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    flex-shrink: 0;
    z-index: 100;
    position: relative;
}

.header-left {
    position: absolute;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.back-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.back-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.header-title {
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.header-title:hover {
    color: var(--accent-hover);
}

.header-center {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-right {
    position: absolute;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Tab 导航 */
.tab-nav {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-md);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

.tab-btn.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.tab-btn svg {
    flex-shrink: 0;
}

.tab-btn span {
    white-space: nowrap;
}

/* 主题切换按钮 */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.icon-moon {
    display: none;
}

[data-theme="dark"] .icon-sun {
    display: none;
}

[data-theme="dark"] .icon-moon {
    display: block;
}

/* ==================== 主内容区 ==================== */
.main {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.tab-content {
    display: none;
    height: 100%;
    overflow: hidden;
}

.tab-content.active {
    display: flex;
}

/* ==================== 图库Tab ==================== */
.gallery-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* 批量操作栏 */
.batch-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    flex-wrap: wrap;
    gap: 10px;
}

.batch-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.batch-right {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.selected-count {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 排序和模式选择器 */
.gallery-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-select {
    height: 34px;
    padding: 0 28px 0 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    transition: border-color var(--transition-fast);
}

.control-select:hover {
    border-color: var(--border-hover);
}

.control-select:focus {
    border-color: var(--accent);
}

.batch-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.batch-btn:hover:not(:disabled) {
    border-color: var(--border-hover);
    background: var(--bg-hover);
}

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

.batch-btn.danger:hover:not(:disabled) {
    color: var(--error);
    border-color: var(--error);
}

/* 复选框样式 */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    user-select: none;
}

.checkbox-wrapper input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox-wrapper input:checked + .checkmark {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-wrapper input:checked + .checkmark::after {
    content: '';
    width: 5px;
    height: 9px;
    border: solid var(--bg-primary);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) translateY(-1px);
}

.checkbox-wrapper input:indeterminate + .checkmark {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-wrapper input:indeterminate + .checkmark::after {
    content: '';
    width: 10px;
    height: 2px;
    background: var(--bg-primary);
}

/* 图库滚动容器 */
.gallery-scroll-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

/* 图库网格 */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    padding: 20px;
    align-content: start;
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.gallery-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-checkbox {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 10;
}

.gallery-checkbox .checkmark {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 0, 0, 0.2);
}

/* 优化后的图库悬浮层 */
.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    padding: 30px 10px 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    max-height: 45%;
    overflow: hidden;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* 优化后的提示词显示 */
.gallery-prompt {
    font-size: 12px;
    color: #fff;
    line-height: 1.4;
    word-break: break-word;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.gallery-prompt:hover {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.gallery-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.gallery-action-btn {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.gallery-action-btn:hover {
    background: #fff;
    transform: scale(1.1);
}

.gallery-info {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 11px;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    padding: 2px 6px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.gallery-item:hover .gallery-info {
    opacity: 1;
}

/* 加载状态和分页器 */
.gallery-footer {
    padding: 16px 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.load-more-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    color: var(--text-secondary);
    font-size: 14px;
}

.load-more-trigger.loading::before {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* 分页器 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.pagination-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--text-primary);
}

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

.pagination-btn.active {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.pagination-info {
    padding: 0 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

/* 空状态 */
.empty-state {
    flex: 1;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* ==================== 生成Tab ==================== */
.generate-layout {
    display: flex;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* 侧边栏 */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar-section {
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

.section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.collapse-icon {
    color: var(--text-tertiary);
    transition: transform var(--transition-normal);
}

.section-header.collapsed .collapse-icon {
    transform: rotate(-90deg);
}

.section-content {
    padding: 0 16px 16px;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.section-content.collapsed {
    padding-top: 0;
    padding-bottom: 0;
    max-height: 0;
    opacity: 0;
}

/* 表单元素 */
.form-group {
    margin-bottom: 12px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-label.required::after {
    content: '*';
    color: var(--error);
    margin-left: 4px;
}

.input, .select {
    width: 100%;
    height: 40px;
    padding: 0 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color var(--transition-fast);
}

.input:focus, .select:focus {
    border-color: var(--accent);
}

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

.select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

textarea.input {
    height: auto;
    min-height: 80px;
    padding: 10px 12px;
    resize: vertical;
    line-height: 1.5;
}

/* 上传区域 */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-area svg {
    color: var(--text-tertiary);
}

.upload-area span {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 预览网格 */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 8px;
    margin-top: 12px;
}

.preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

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

.preview-item .remove-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.preview-item:hover .remove-btn {
    opacity: 1;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.btn-text {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 12px;
}

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

.btn-sm {
    padding: 6px 10px;
    font-size: 13px;
}

/* 主内容区 */
.generate-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* 对话容器 */
.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

/* 生成卡片可折叠样式 */
.generation-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}

.generation-card:hover {
    box-shadow: var(--shadow-md);
}

.generation-card-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    transition: background var(--transition-fast);
}

.generation-card-header:hover {
    background: var(--bg-hover);
}

.generation-card-header-content {
    flex: 1;
    min-width: 0;
}

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

.generation-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--text-tertiary);
}

/* 复制提示词按钮 */
.copy-prompt-btn {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    margin-right: 4px;
}

.copy-prompt-btn:hover {
    background: var(--bg-secondary);
    color: var(--accent);
}

.copy-prompt-btn:active {
    transform: scale(0.95);
}

.generation-card-toggle {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: transform var(--transition-normal);
}

.generation-card.collapsed .generation-card-toggle {
    transform: rotate(-90deg);
}

.generation-card-body {
    padding: 16px;
    max-height: 1000px;
    opacity: 1;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.generation-card.collapsed .generation-card-body {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
}

/* 图片自适应显示 */
.generation-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.generation-image {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.generation-image img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.generation-image:hover img {
    transform: scale(1.02);
}

.image-download-btn {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-fast);
}

.generation-image:hover .image-download-btn {
    opacity: 1;
}

.image-download-btn:hover {
    background: rgba(0, 0, 0, 0.8);
}

/* 原图卡片样式 */
.source-image-card {
    border: 2px solid var(--info);
    background: var(--info-bg);
}

.source-image-card .generation-card-header {
    background: var(--info-bg);
    border-bottom-color: var(--info);
}

.image-remove-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: rgba(220, 38, 38, 0.9);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-fast);
}

.generation-image:hover .image-remove-btn {
    opacity: 1;
}

.image-remove-btn:hover {
    background: var(--error);
}

/* ==================== 底部输入栏 ==================== */
.input-bar {
    padding: 16px 20px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.input-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.prompt-input {
    width: 100%;
    min-height: 60px;
    max-height: 150px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
    resize: none;
    transition: border-color var(--transition-fast);
}

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

.prompt-input::placeholder {
    color: var(--text-tertiary);
}

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

.char-count {
    font-size: 12px;
    color: var(--text-tertiary);
}

.input-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.duration {
    font-size: 13px;
    color: var(--success);
}

/* 手机端设置行 */
.mobile-settings {
    display: none;
    flex-direction: column;
    gap: 10px;
    padding: 0 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.mobile-settings.show {
    max-height: 500px;
    padding: 12px 16px;
}

.mobile-settings-toggle {
    display: none;
    width: 100%;
    padding: 10px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    transition: background var(--transition-fast);
}

.mobile-settings-toggle:hover {
    background: var(--bg-hover);
}

.mobile-settings-toggle svg {
    transition: transform var(--transition-normal);
}

.mobile-settings-toggle.collapsed svg {
    transform: rotate(180deg);
}

.mobile-settings-row {
    display: flex;
    gap: 8px;
}

.mobile-settings-row .select {
    flex: 1;
    min-width: 0;
}

.mobile-settings-row .btn {
    flex-shrink: 0;
}

/* ==================== 修改Tab ==================== */
.edit-layout {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.edit-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 20px;
}

.edit-upload-wrapper {
    max-width: 600px;
    margin: 0 auto 20px;
    width: 100%;
}

.edit-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.edit-upload-area:hover, .edit-upload-area.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.edit-upload-area svg {
    color: var(--text-tertiary);
}

.edit-upload-area h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.edit-upload-area p {
    font-size: 14px;
    color: var(--text-secondary);
}

#editChatContainer {
    flex: 1;
    min-height: 200px;
}

/* 修改Tab底部输入栏 */
.edit-input-bar {
    padding: 16px 20px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.edit-settings-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.edit-settings-row .select {
    flex: 1;
    min-width: 100px;
}

.ref-count-badge {
    display: flex;
    align-items: center;
    padding: 0 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ref-count-badge:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.edit-input-bar .input-wrapper {
    max-width: 800px;
}

/* ==================== 重绘Tab ==================== */
.inpaint-layout {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.inpaint-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.inpaint-canvas-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.inpaint-canvas-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

#inpaintCanvas {
    display: block;
    cursor: crosshair;
    box-shadow: var(--shadow-lg);
}

.inpaint-mask-preview {
    width: 300px;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.mask-preview-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mask-preview-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    overflow: hidden;
}

#maskPreviewCanvas {
    max-width: 100%;
    max-height: 100%;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.inpaint-upload-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    z-index: 10;
}

.inpaint-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    max-width: 500px;
}

.inpaint-upload-area:hover,
.inpaint-upload-area.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.inpaint-upload-area svg {
    color: var(--text-tertiary);
}

.inpaint-upload-area h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.inpaint-upload-area p {
    font-size: 14px;
    color: var(--text-secondary);
}

.inpaint-toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 20px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    overflow-x: auto;
}

.tool-group,
.size-group,
.zoom-group,
.action-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.size-group label,
.zoom-group label {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.tool-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.tool-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

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

#brushSize {
    width: 120px;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-secondary);
    outline: none;
    -webkit-appearance: none;
}

#brushSize::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
}

#brushSize::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
}

#brushSizeValue {
    font-size: 13px;
    color: var(--text-primary);
    min-width: 30px;
    text-align: center;
}

.zoom-group .btn,
.action-group .btn {
    padding: 8px 14px;
    font-size: 13px;
}

/* ==================== 设置Tab ==================== */
#settingsTab {
    overflow-y: auto;
}

.settings-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px 20px;
}

.settings-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
}

.settings-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    overflow: hidden;
}

.settings-section .section-header {
    padding: 16px 20px;
}

.settings-section .section-content {
    padding: 0 20px 20px;
}

.settings-section .section-content.collapsed {
    padding: 0 20px;
}

/* API配置卡片 */
.config-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}

.config-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.config-card:hover {
    border-color: var(--border-hover);
}

.config-card.default {
    border-color: var(--accent);
}

.config-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.config-name {
    font-weight: 600;
    font-size: 15px;
}

.default-badge {
    font-size: 12px;
    color: var(--warning);
    background: var(--warning-bg);
    padding: 2px 8px;
    border-radius: 4px;
}

.config-card-body {
    padding: 14px 16px;
}

.config-info {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 13px;
}

.config-info:last-child {
    margin-bottom: 0;
}

.config-info .config-label {
    color: var(--text-tertiary);
    min-width: 70px;
    flex-shrink: 0;
}

.config-info .config-value {
    color: var(--text-secondary);
    word-break: break-all;
}

.config-card-footer {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.config-card-footer .btn {
    flex: 1;
}

.add-config-btn {
    width: 100%;
}

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

/* 模型管理样式 */
.model-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.model-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.model-item:hover {
    border-color: var(--border-hover);
}

.model-item-name {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
}

.model-item-actions {
    display: flex;
    gap: 4px;
}

.model-item-btn {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.model-item-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.model-item-btn.delete:hover {
    color: var(--error);
}

/* ==================== 图片查看器 ==================== */
.viewer {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    display: none;
    flex-direction: column;
}

.viewer.show {
    display: flex;
}

.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.5);
    flex-shrink: 0;
}

.viewer-title-wrapper {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.viewer-title {
    color: #fff;
    font-size: 14px;
}

.viewer-resolution {
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
}

.viewer-actions {
    display: flex;
    gap: 8px;
}

.viewer-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.viewer-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.viewer-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.viewer-img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    cursor: grab;
    user-select: none;
    transition: transform var(--transition-fast);
}

.viewer-img.dragging {
    cursor: grabbing;
    transition: none;
}

.viewer-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.viewer-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.viewer-nav.prev {
    left: 20px;
}

.viewer-nav.next {
    right: 20px;
}

.viewer-footer {
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    flex-shrink: 0;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.zoom-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.zoom-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.zoom-level {
    color: #fff;
    font-size: 14px;
    min-width: 50px;
    text-align: center;
}

/* ==================== 模态框 ==================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1001;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-sm {
    max-width: 400px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* 密码输入框 */
.password-input {
    position: relative;
}

.password-input .input {
    padding-right: 44px;
}

.toggle-password {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.toggle-password:hover {
    color: var(--text-secondary);
    background: var(--bg-secondary);
}

/* 开关样式 */
.switch-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.switch-label span {
    font-size: 14px;
    font-weight: 500;
}

.switch-desc {
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 400;
}

.switch {
    position: relative;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-tertiary);
    border-radius: 24px;
    transition: var(--transition-normal);
}

.switch-slider::before {
    position: absolute;
    content: '';
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: var(--transition-normal);
}

.switch input:checked + .switch-slider {
    background: var(--accent);
}

.switch input:checked + .switch-slider::before {
    transform: translateX(20px);
}

.modal-body .form-group {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.modal-body .form-group:has(.switch) {
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 8px;
}

/* 提示词弹窗 */
.prompt-modal-content {
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.6;
    font-size: 14px;
    color: var(--text-primary);
    max-height: 400px;
    overflow-y: auto;
}

/* ==================== Toast 提示 ==================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    transform: translateX(120%);
    transition: transform var(--transition-normal);
    pointer-events: auto;
}

.toast.show {
    transform: translateX(0);
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-error {
    border-left: 4px solid var(--error);
}

.toast-warning {
    border-left: 4px solid var(--warning);
}

.toast-info {
    border-left: 4px solid var(--info);
}

.toast-message {
    flex: 1;
}

.toast-close {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.toast-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* ==================== 滚动条 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    
    .tab-btn span {
        display: none;
    }
    
    .tab-btn {
        padding: 8px 12px;
    }
    
    .inpaint-mask-preview {
        width: 250px;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 12px;
    }
    
    .header-title {
        font-size: 16px;
    }
    
    .tab-nav {
        gap: 2px;
        padding: 3px;
    }
    
    .tab-btn {
        padding: 6px 10px;
    }
    
    .tab-btn svg {
        width: 16px;
        height: 16px;
    }
    
    /* 生成Tab - 隐藏侧栏,显示手机端设置 */
    .sidebar {
        display: none;
    }
    
    .mobile-settings-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
    }
    
    .mobile-settings {
        display: flex;
    }
    
    .generate-main {
        width: 100%;
    }
    
    /* 图库 */
    .batch-toolbar {
        padding: 10px 12px;
    }
    
    .gallery-controls {
        width: 100%;
        justify-content: flex-end;
    }
    
    .batch-right {
        width: 100%;
    }
    
    .batch-btn {
        flex: 1;
        justify-content: center;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 10px;
        padding: 12px;
    }
    
    .gallery-overlay {
        padding: 20px 8px 8px;
        max-height: 40%;
    }
    
    .gallery-prompt {
        -webkit-line-clamp: 2;
        font-size: 11px;
    }
    
    .gallery-action-btn {
        width: 28px;
        height: 28px;
    }
    
    /* 修改Tab */
    .edit-upload-area {
        padding: 40px 20px;
    }
    
    .edit-settings-row {
        flex-wrap: wrap;
    }
    
    .edit-settings-row .select {
        min-width: calc(50% - 6px);
    }
    
    /* 生成卡片 */
    .generation-images {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 设置 */
    .settings-container {
        padding: 20px 12px;
    }
    
    .config-card-footer {
        flex-wrap: wrap;
    }
    
    .config-card-footer .btn {
        flex: none;
        width: calc(50% - 4px);
    }
    
    /* 查看器 */
    .viewer-nav {
        width: 40px;
        height: 40px;
    }
    
    .viewer-nav.prev {
        left: 10px;
    }
    
    .viewer-nav.next {
        right: 10px;
    }
    
    /* 弹窗 */
    .modal-content {
        width: 95%;
        max-height: 85vh;
    }
    
    /* Toast */
    .toast-container {
        left: 12px;
        right: 12px;
        top: auto;
        bottom: 20px;
    }
    
    .toast {
        transform: translateY(120%);
    }
    
    .toast.show {
        transform: translateY(0);
    }
    
    /* 重绘Tab */
    .inpaint-content {
        flex-direction: column;
    }
    
    .inpaint-mask-preview {
        width: 100%;
        height: 200px;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
    
    .inpaint-toolbar {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .tool-group,
    .size-group,
    .zoom-group,
    .action-group {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .header-title {
        display: none;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        padding: 10px;
    }
    
    .gallery-overlay {
        padding: 16px 6px 6px;
        max-height: 35%;
    }
    
    .gallery-prompt {
        -webkit-line-clamp: 1;
        font-size: 10px;
    }
    
    .gallery-action-btn {
        width: 26px;
        height: 26px;
    }
    
    .generation-images {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    
    .edit-upload-area h3 {
        font-size: 16px;
    }
    
    .edit-upload-area p {
        font-size: 13px;
    }
    
    .settings-title {
        font-size: 20px;
    }
    
    .mobile-settings-row {
        flex-wrap: wrap;
    }
    
    .mobile-settings-row .select {
        min-width: calc(50% - 4px);
    }
    
    .control-select {
        font-size: 12px;
        padding: 0 24px 0 8px;
    }
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-content.active {
    animation: fadeIn var(--transition-normal);
}

.generation-card {
    animation: slideUp var(--transition-normal);
}