/* 
 * 小红书文章图片生成系统 - 样式表
 * 设计理念：小红书红色风格 + 移动端优先 + 无障碍友好
 */

/* ==================== CSS 变量 ==================== */
:root {
    /* 主色调 - 小红书红色 */
    --color-primary: #FF2442;
    --color-primary-dark: #E01E37;
    --color-primary-light: #FFD6DC;
    --color-primary-subtle: #FFF5F6;
    
    /* 辅助色 - 温暖的粉色 */
    --color-secondary: #FF6B81;
    --color-secondary-light: #FF8E9E;
    
    /* 背景色 */
    --color-bg: #FFFFFF;
    --color-bg-card: #FFFFFF;
    --color-bg-elevated: #FFFAFA;
    
    /* 文字色 */
    --color-text: #1A1A1A;
    --color-text-secondary: #5C5C5C;
    --color-text-muted: #8A8A8A;
    --color-text-inverse: #FFFFFF;
    
    /* 边框色 */
    --color-border: #FFE6E9;
    --color-border-light: #FFF0F2;
    
    /* 状态色 */
    --color-success: #4A9D7C;
    --color-error: #FF2442;
    --color-warning: #FF9800;
    --color-info: #5B8FD6;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(255, 36, 66, 0.1);
    --shadow-md: 0 4px 12px rgba(255, 36, 66, 0.15);
    --shadow-lg: 0 8px 24px rgba(255, 36, 66, 0.2);
    --shadow-glow: 0 0 20px rgba(255, 36, 66, 0.3);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* 字体 */
    --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", monospace;
    
    /* 动画 */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== 布局容器 ==================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ==================== 顶部导航 ==================== */
.app-header {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
    color: var(--color-text-inverse);
    padding: var(--space-lg) var(--space-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 60%);
    animation: shimmer 15s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20%, 20%); }
}

/* 返回按钮 */
.header-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(255, 255, 255, 0.18);
    color: var(--color-text-inverse);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(8px);
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.header-back-btn:hover {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.back-arrow {
    font-size: 1.125rem;
    line-height: 1;
    transition: transform var(--transition-fast);
}

.header-back-btn:hover .back-arrow {
    transform: translateX(-3px);
}

.header-content {
    position: relative;
    z-index: 1;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.tagline {
    font-size: 0.875rem;
    opacity: 0.9;
    letter-spacing: 0.05em;
}

/* ==================== 步骤导航 ==================== */
.step-nav {
    background: var(--color-bg-card);
    padding: var(--space-lg) var(--space-md);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.step-container {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    transition: var(--transition-normal);
    opacity: 0.5;
}

.step.active {
    opacity: 1;
}

.step.completed {
    opacity: 1;
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-border);
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition-normal);
}

.step.active .step-number {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-glow);
}

.step.completed .step-number {
    background: var(--color-success);
    color: var(--color-text-inverse);
}

.step-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.step.active .step-label {
    color: var(--color-text);
}

.step-line {
    flex: 1;
    height: 2px;
    background: var(--color-border);
    margin: 0 var(--space-sm);
    max-width: 80px;
}

/* ==================== 主内容区 ==================== */
.main-content {
    flex: 1;
    padding: var(--space-lg) var(--space-md);
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

/* ==================== 步骤面板 ==================== */
.step-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.step-panel.active {
    display: block;
}

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

.panel-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.panel-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.panel-desc {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* ==================== 表单样式 ==================== */
.blog-form,
.prompt-form {
    background: var(--color-bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-xl);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 480px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.label-required {
    color: var(--color-error);
    margin-left: var(--space-xs);
}

input[type="text"],
textarea,
select {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-bg-card);
    transition: var(--transition-fast);
}

input[type="text"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

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 12 12'%3E%3Cpath fill='%235C5C5C' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* Range 滑块 */
input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--color-border);
    appearance: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.range-value {
    display: inline-block;
    margin-left: var(--space-sm);
    font-weight: 600;
    color: var(--color-primary);
}

/* 复选框 */
.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-weight: 400;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary-subtle);
}

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.0625rem;
    min-height: 52px;
}

.btn-small {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
    margin-top: var(--space-lg);
}

/* ==================== 预览区域 ==================== */
.preview-section,
.prompts-editor,
.images-preview {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-top: var(--space-xl);
    overflow: hidden;
}

.preview-header,
.editor-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
}

.preview-header h3,
.editor-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.preview-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.slug-badge {
    background: var(--color-primary-subtle);
    color: var(--color-primary-dark);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-family: var(--font-mono);
}

.preview-content {
    padding: var(--space-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.preview-footer,
.editor-actions {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
}

/* ==================== Markdown 渲染样式 ==================== */
.markdown-body {
    font-size: 1rem;
    line-height: 1.75;
}

.markdown-body h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin: var(--space-lg) 0 var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-border);
}

.markdown-body h2 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin: var(--space-lg) 0 var(--space-md);
}

.markdown-body h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin: var(--space-md) 0;
}

.markdown-body p {
    margin-bottom: var(--space-md);
}

.markdown-body ul,
.markdown-body ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

.markdown-body li {
    margin-bottom: var(--space-sm);
}

.markdown-body code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--color-bg-elevated);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.markdown-body pre {
    background: #1E1E1E;
    color: #D4D4D4;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--space-md);
}

.markdown-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

.markdown-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--space-md);
    margin: var(--space-md) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ==================== 提示词预览列表（Step 2） ==================== */
.prompts-preview-items {
    display: grid;
    gap: var(--space-sm);
}

.prompt-preview-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.prompt-preview-label {
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--color-primary-dark);
    background: var(--color-primary-subtle);
    padding: 2px var(--space-sm);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    flex-shrink: 0;
}

.prompt-preview-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* ==================== 封面信息提示 ==================== */
.cover-info-box {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: linear-gradient(135deg, var(--color-primary-subtle) 0%, #FFF0F5 100%);
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    color: var(--color-primary-dark);
    font-size: 0.9375rem;
}

.cover-info-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* ==================== 片段选择器 ==================== */
.section-picker {
    background: var(--color-bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-lg);
}

.picker-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-xs);
}

.picker-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.sections-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.section-item {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.section-item:hover {
    background: var(--color-primary-subtle);
    border-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.section-item.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.section-item .level-badge {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 600;
    padding: 2px 4px;
    border-radius: 3px;
    background: rgba(0,0,0,0.1);
    margin-right: var(--space-xs);
}

/* ==================== 段落配置区域 ==================== */
.paragraphs-area {
    margin-top: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.paragraphs-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.paragraphs-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.paragraphs-list {
    display: grid;
    gap: var(--space-md);
}

/* ==================== 段落卡片 ==================== */
.paragraph-card {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-fast);
    cursor: pointer;
}

.paragraph-card:hover {
    border-color: var(--color-primary-light);
}

.paragraph-card.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

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

.paragraph-card-number {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--color-secondary);
}

.paragraph-card-controls {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.para-img-count-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.para-img-count {
    width: auto;
    min-width: 80px;
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
}

.paragraph-card-body {
    padding: var(--space-md);
    display: grid;
    gap: var(--space-sm);
}

.para-title-input {
    font-size: 0.9375rem;
    padding: var(--space-sm) var(--space-md);
}

.para-excerpt-input {
    font-size: 0.9375rem;
    min-height: 100px;
    resize: vertical;
}

/* 删除按钮（危险色） */
.btn-danger {
    color: var(--color-error) !important;
    border-color: var(--color-error) !important;
}

.btn-danger:hover:not(:disabled) {
    background: var(--color-error) !important;
    color: var(--color-text-inverse) !important;
}

/* ==================== 提示词卡片 ==================== */
.prompts-cards {
    padding: var(--space-lg);
    display: grid;
    gap: var(--space-lg);
}

.prompt-card {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    overflow: hidden;
}

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

.prompt-card-title {
    font-weight: 600;
    color: var(--color-secondary);
}

.prompt-card-type {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    background: var(--color-primary-subtle);
    color: var(--color-primary-dark);
}

.prompt-card-body {
    padding: var(--space-md);
}

.prompt-card textarea {
    min-height: 150px;
    font-size: 0.9375rem;
}

.prompt-card-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md) var(--space-md);
}

.prompt-card-actions .btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.8125rem;
}

/* ==================== 确认区域 ==================== */
.confirm-section {
    background: var(--color-bg-card);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.confirm-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.summary-item {
    text-align: center;
    padding: var(--space-md);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
}

.summary-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.summary-value {
    font-weight: 600;
    color: var(--color-secondary);
}

.confirm-warning {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: #FFF8E6;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    color: #8B6914;
}

.confirm-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
}

/* ==================== 进度列表 ==================== */
.progress-section {
    background: var(--color-bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-top: var(--space-xl);
}

.progress-section h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
    color: var(--color-secondary);
}

.progress-list {
    display: grid;
    gap: var(--space-sm);
}

.progress-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
}

.progress-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.progress-icon.loading {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.progress-name {
    flex: 1;
    font-weight: 500;
}

.progress-status {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.progress-item.success {
    border-left: 3px solid var(--color-success);
}

.progress-item.failed {
    border-left: 3px solid var(--color-error);
}

.progress-item.pending {
    border-left: 3px solid var(--color-border);
}

.retry-btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    background: var(--color-error);
    color: var(--color-text-inverse);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

/* ==================== 限制提示条（Step 2） ==================== */
.limit-bar {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border: 2px solid transparent;
    transition: var(--transition-fast);
}

.limit-bar.limit-ok {
    background: #F0FFF4;
    border-color: #C6F6D5;
}

.limit-bar.limit-exceeded {
    background: #FFF5F5;
    border-color: #FED7D7;
}

.limit-bar-inner {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.limit-bar-icon {
    font-size: 1.125rem;
    flex-shrink: 0;
}

.limit-bar.limit-ok .limit-bar-text {
    color: #276749;
    font-weight: 500;
}

.limit-bar.limit-exceeded .limit-bar-text {
    color: #C53030;
    font-weight: 600;
}

/* ==================== 月度额度条（Step 3） ==================== */
.quota-bar {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border: 2px solid transparent;
    transition: var(--transition-fast);
}

.quota-bar.quota-ok {
    background: #F0FFF4;
    border-color: #C6F6D5;
}

.quota-bar.quota-exceeded {
    background: #FFF5F5;
    border-color: #FED7D7;
}

.quota-bar-inner {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.quota-bar-icon {
    font-size: 1.125rem;
    flex-shrink: 0;
}

.quota-bar.quota-ok .quota-bar-text {
    color: #276749;
    font-weight: 500;
}

.quota-bar.quota-exceeded .quota-bar-text {
    color: #C53030;
    font-weight: 600;
}

.quota-progress-track {
    height: 8px;
    background: #E2E8F0;
    border-radius: 4px;
    overflow: hidden;
}

.quota-progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.4s ease;
    background: linear-gradient(90deg, var(--color-success) 0%, var(--color-success) 60%, var(--color-warning) 80%, var(--color-error) 100%);
}

.quota-bar.quota-exceeded .quota-progress-fill {
    background: var(--color-error);
}

/* ==================== 图片网格 ==================== */
.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
    padding: var(--space-lg);
}

.image-card {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.image-card img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
}

.image-card-info {
    padding: var(--space-sm);
    text-align: center;
}

.image-card-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

/* ==================== 加载遮罩 ==================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-primary-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-md);
}

.loading-text {
    color: var(--color-text-inverse);
    font-size: 1rem;
    font-weight: 500;
}

/* ==================== Toast 提示 ==================== */
.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    max-width: 320px;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

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

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

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

/* ==================== 底部 ==================== */
/* 注意：footer 完整样式在文件末尾的「页脚样式」区块 */

/* ==================== 流式输出弹窗 ==================== */
.stream-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
    backdrop-filter: blur(6px);
    padding: var(--space-md);
    animation: fadeInOverlay 0.25s ease;
}

@keyframes fadeInOverlay {
    from { opacity: 0; }
    to { opacity: 1; }
}

.stream-modal {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 720px;
    max-height: 82vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUpModal 0.3s ease;
}

@keyframes slideUpModal {
    from { opacity: 0; transform: translateY(30px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

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

.stream-modal-title-area {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.stream-modal-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-primary-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

.stream-modal-spinner.done {
    border: none;
    animation: none;
    width: 22px;
    height: 22px;
    background: var(--color-success);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.stream-modal-spinner.done::after {
    content: "✓";
}

.stream-modal-title {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.stream-modal-phase {
    font-size: 0.8125rem;
    color: var(--color-primary);
    font-weight: 600;
    background: var(--color-primary-subtle);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.stream-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    min-height: 200px;
    max-height: 55vh;
    position: relative;
}

.stream-modal-content {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--color-text);
    white-space: pre-wrap;
    word-break: break-word;
}

.stream-cursor {
    display: inline;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.125rem;
    animation: blinkCursor 0.7s step-end infinite;
}

@keyframes blinkCursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.stream-modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    flex-shrink: 0;
}

.stream-modal-stats {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.stream-char-count {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.stream-done-btn {
    animation: fadeIn 0.3s ease;
}

/* 流式弹窗中的分隔线（用于多段落提示词之间） */
.stream-phase-divider {
    display: block;
    margin: var(--space-md) 0;
    padding: var(--space-sm) 0;
    border-top: 2px dashed var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
}

/* 响应式 */
@media (max-width: 480px) {
    .stream-modal {
        max-height: 90vh;
        border-radius: var(--radius-lg);
    }

    .stream-modal-header {
        padding: var(--space-md);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .stream-modal-body {
        padding: var(--space-md);
        max-height: 60vh;
    }

    .stream-modal-footer {
        padding: var(--space-sm) var(--space-md);
        flex-direction: column;
        gap: var(--space-sm);
    }
}

/* ==================== 隐藏类 ==================== */
.hidden {
    display: none !important;
}

/* ==================== 响应式适配 ==================== */
@media (max-width: 480px) {
    :root {
        --space-lg: 16px;
        --space-xl: 24px;
    }
    
    .app-header {
        padding: var(--space-md);
    }
    
    .header-back-btn {
        font-size: 0.8125rem;
        padding: 6px var(--space-md);
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .step-label {
        display: none;
    }
    
    .step-number {
        width: 32px;
        height: 32px;
    }
    
    .main-content {
        padding: var(--space-md) var(--space-sm);
    }
    
    .blog-form,
    .prompt-form,
    .confirm-section {
        padding: var(--space-md);
    }
    
    .btn-large {
        width: 100%;
    }
    
    .preview-header,
    .editor-header {
        padding: var(--space-md);
    }
    
    .preview-content {
        padding: var(--space-md);
    }
    
    .toast-container {
        left: var(--space-md);
        right: var(--space-md);
    }
    
    .toast {
        max-width: none;
    }
}

/* ==================== 无障碍增强 ==================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --color-border: #666666;
        --color-text-muted: #555555;
    }
}

/* ==================== 页脚样式 ==================== */
.app-footer {
    background: linear-gradient(135deg, #2D2D3A 0%, #1A1A2E 100%);
    color: var(--color-text-inverse);
    padding: var(--space-2xl) var(--space-md) var(--space-lg);
    position: relative;
    overflow: hidden;
}

.app-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-primary-light));
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    position: relative;
    z-index: 1;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr 1fr;
        gap: var(--space-lg);
    }
}

.footer-section {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.footer-section:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.15);
}

.footer-title {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text-inverse);
    position: relative;
    padding-bottom: var(--space-sm);
}

.footer-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
}

/* 联系信息样式 */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.75);
}

.contact-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-link {
    margin-top: var(--space-md);
}

.contact-link .btn {
    width: 100%;
    background: rgba(255, 36, 66, 0.2);
    color: var(--color-text-inverse);
    border: 1px solid rgba(255, 36, 66, 0.3);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    padding: var(--space-sm) var(--space-md);
    transition: all var(--transition-normal);
    text-align: center;
}

.contact-link .btn:hover {
    background: rgba(255, 36, 66, 0.35);
    border-color: rgba(255, 36, 66, 0.5);
    transform: translateY(-2px);
}

/* 项目信息样式 */
.project-description {
    font-size: 0.875rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-md);
}

.project-credit {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
}

/* 备案信息样式 */
.beian-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.beian-link {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.8125rem;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: all var(--transition-fast);
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.beian-link:hover {
    color: var(--color-text-inverse);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.beian-icon {
    width: 14px;
    height: 14px;
    object-fit: contain;
}

/* 响应式页脚 */
@media (max-width: 767px) {
    .app-footer {
        padding: var(--space-xl) var(--space-md) var(--space-md);
    }

    .footer-section {
        padding: var(--space-md);
    }
    
    .footer-title {
        font-size: 1rem;
    }
}