/* ==================== 方案一：经典三栏布局 ==================== */

/* ==================== CSS 变量 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252540;
    --bg-elevated: #2a2a45;
    --bg-hover: #303050;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-tertiary: #6a6a80;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(99, 102, 241, 0.3);

    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --accent-glow: 0 0 30px rgba(99, 102, 241, 0.4);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 浅色主题 */
body.light-theme {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8e8ed;
    --bg-elevated: #ffffff;
    --bg-hover: #e0e0e5;

    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #86868b;

    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(99, 102, 241, 0.3);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ==================== 顶部导航栏 ==================== */
.api-bar {
    background: var(--bg-secondary);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* ==================== AI 金句栏 ==================== */
.ai-quote-bar {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
    position: relative;
    overflow: hidden;
}

.ai-quote-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.quote-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: relative;
    z-index: 1;
    cursor: pointer;
    transition: var(--transition);
}

.quote-content:hover {
    transform: scale(1.01);
}

.quote-content:hover .quote-text {
    color: var(--accent-primary);
}

.quote-icon {
    font-size: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

.quote-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.3s ease;
    text-align: center;
    display: inline-block;
}

.quote-progress {
    width: 100px;
    height: 3px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.quote-progress-bar {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: width 0.1s linear;
}

/* ==================== 移动端专属元素（默认隐藏） ==================== */
.mobile-intro-toggle,
.mobile-intro-close,
.quote-collapse-btn {
    display: none;
}

/* ==================== 系统说明区域 ==================== */
.system-intro {
    background: linear-gradient(180deg, #f8f9ff 0%, #ffffff 50%, #ffffff 100%);
    padding: 60px 20px;
    border-bottom: 1px solid #e8eaf0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.system-intro.collapsed {
    max-height: 0;
    padding: 0 20px;
    opacity: 0;
    pointer-events: none;
}

/* 宣传区域折叠按钮（桌面端） */
.intro-collapse-wrapper {
    display: flex;
    justify-content: center;
    padding: 12px 20px;
    background: linear-gradient(180deg, #ffffff 0%, #f8f9ff 100%);
    border-bottom: 1px solid #e8eaf0;
    transition: opacity 0.3s ease;
}

.intro-collapse-wrapper.hidden {
    display: none;
}

.intro-collapse-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    border: none;
    border-radius: 24px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.intro-collapse-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-primary) 100%);
}

.intro-collapse-toggle:active {
    transform: translateY(0);
}

.collapse-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

.intro-collapse-toggle.expanded .collapse-icon {
    transform: rotate(180deg);
}

.collapse-text {
    white-space: nowrap;
}

.intro-content {
    max-width: 1200px;
    margin: 0 auto;
}

.intro-header {
    text-align: center;
    margin-bottom: 50px;
}

.intro-title {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.intro-subtitle {
    font-size: 18px;
    color: #6b7280;
    font-weight: 500;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    margin-bottom: 50px;
}

.intro-card {
    background: #ffffff;
    border: 1px solid #e8eaf0;
    border-radius: var(--radius-xl);
    padding: 24px;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.intro-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
    border-color: #667eea;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.card-icon {
    font-size: 32px;
}

.intro-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.card-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.card-list li {
    padding: 10px 0;
    color: #6b7280;
    font-size: 15px;
    line-height: 1.6;
    border-bottom: 1px solid #f0f2f5;
}

.card-list li:last-child {
    border-bottom: none;
}

.card-list strong {
    color: var(--accent-primary);
    font-weight: 700;
}

/* 步骤列表 */
.step-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.step-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 16px;
}

.step-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.step-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 8px;
}

.step-copy-btn {
    padding: 6px 14px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.step-copy-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

/* 使用场景 */
.use-cases {
    margin-bottom: 50px;
}

.section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 30px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.case-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.case-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 12px;
}

.case-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.case-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 价值主张 */
.value-props {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.prop-item {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition);
}

.prop-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.prop-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 12px;
}

.prop-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.prop-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.api-bar-content {
    max-width: 1920px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo-icon {
    font-size: 20px;
}

.logo-text {
    font-size: 16px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.layout-badge {
    font-size: 10px;
    padding: 3px 8px;
    background: var(--accent-primary);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.right-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.nav-link:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

/* 一键体验按钮 - 超大版 */
.quick-try-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex: 1;
    max-width: 400px;
    padding: 18px 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    font-size: 22px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.4);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.quick-try-btn .btn-icon {
    font-size: 32px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.quick-try-btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 48px rgba(102, 126, 234, 0.6);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.quick-try-btn:active {
    transform: translateY(-2px) scale(1);
    box-shadow: 0 6px 24px rgba(102, 126, 234, 0.5);
}

.settings-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.settings-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* 主题切换按钮 */
.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-size: 20px;
}

.theme-toggle-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

/* ==================== 主容器 - 三栏布局 ==================== */
.main-container {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: 0;
    min-height: calc(100vh - 65px);
    max-width: 1920px;
    margin: 0 auto;
}

/* ==================== 左侧素材库 ==================== */
.assets-panel {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.assets-panel.collapsed {
    width: 60px;
}

.assets-panel.collapsed .assets-content {
    display: none;
}

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

.panel-header h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.collapse-btn {
    width: 28px;
    height: 28px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

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

.assets-content {
    flex: 1;
    overflow-y: auto;
}

/* ==================== 细节工厂面板 ==================== */
.quick-prompts-panel {
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

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

.quick-prompts-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* 使用说明 */
.factory-intro {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.factory-intro .intro-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.factory-intro .intro-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.collapse-icon-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: var(--transition);
}

.collapse-icon-btn:hover {
    color: var(--text-primary);
}

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

.quick-prompts-content {
    max-height: 400px;
    overflow-y: auto;
    transition: max-height 0.3s ease;
}

.quick-prompts-content.collapsed {
    max-height: 0;
    overflow: hidden;
}

.prompt-category {
    border-bottom: 1px solid var(--border-subtle);
}

.prompt-category:last-child {
    border-bottom: none;
}

.category-title {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    position: relative;
}

.category-title .category-icon {
    font-size: 18px;
}

.category-title .category-name {
    flex: 1;
}

.add-custom-btn {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border: none;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border-radius: 16px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: var(--transition);
}

.add-custom-btn span:first-child {
    font-size: 14px;
}

.add-custom-btn span:last-child {
    font-size: 11px;
}

.add-custom-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.add-custom-btn:active {
    transform: scale(0.98);
}

.category-options {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 12px;
}

.option-chip {
    padding: 8px 14px;
    border: 2px solid var(--border-color);
    background: var(--bg-tertiary);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.option-chip:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.05);
    transform: translateY(-1px);
}

.option-chip.selected {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: var(--bg-tertiary);
    font-weight: 600;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.option-chip.selected::after {
    content: '✓';
    position: absolute;
    top: -6px;
    right: -6px;
    font-size: 10px;
    background: var(--accent-primary);
    color: white;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 自定义选项输入弹窗 */
.custom-prompt-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5000;
}

.custom-prompt-modal.active {
    display: flex;
}

.custom-prompt-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 24px;
    width: 90%;
    max-width: 400px;
}

.custom-prompt-card h4 {
    margin: 0 0 16px 0;
    font-size: 16px;
    color: var(--text-primary);
}

.custom-prompt-input {
    width: 100%;
    height: 80px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    resize: none;
    font-family: inherit;
}

.custom-prompt-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.custom-prompt-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.custom-prompt-btn {
    flex: 1;
    height: 36px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.custom-prompt-btn.primary {
    background: var(--accent-primary);
    color: white;
}

.custom-prompt-btn.primary:hover {
    background: var(--accent-secondary);
}

.custom-prompt-btn.secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

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

/* 素材标签 */
.asset-tabs {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
}

.asset-tab {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

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

.asset-tab.active {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-glow);
}

/* 素材网格 */
.asset-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    padding: 0 12px 12px;
}

.asset-item {
    aspect-ratio: 1;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.asset-item:hover {
    border-color: var(--accent-primary);
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

.asset-item.selected {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3), var(--shadow-glow);
}

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

.asset-item .asset-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 16px 6px 4px;
    font-size: 11px;
    color: white;
    text-align: center;
}

/* 上传按钮卡片 */
.asset-upload-btn {
    background: var(--bg-tertiary);
    border: 2px dashed var(--accent-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.asset-upload-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent-primary);
    transform: scale(1.05);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2), var(--shadow-glow);
}

.asset-upload-btn .upload-icon {
    font-size: 36px;
    color: var(--accent-primary);
    font-weight: 300;
    line-height: 1;
}

.asset-upload-btn .asset-label {
    position: static;
    background: none;
    padding: 8px 6px 0;
    font-size: 11px;
    color: var(--text-primary);
    font-weight: 500;
}

/* 自定义描述卡片 */
.asset-custom-desc {
    background: var(--bg-tertiary);
    border: 2px dashed var(--accent-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.asset-custom-desc:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.asset-custom-desc.has-desc {
    background: var(--accent-gradient);
    border-color: var(--accent-secondary);
    border-style: solid;
}

.asset-custom-desc .custom-desc-icon {
    font-size: 40px;
    opacity: 0.7;
}

.asset-custom-desc.has-desc .custom-desc-icon {
    font-size: 40px;
    opacity: 1;
}

/* ==================== 中间预览区 ==================== */
.preview-panel {
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.preview-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.preview-status {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* 左右分栏布局 */
.preview-split {
    flex: 1;
    display: flex;
    gap: 0;
    overflow: hidden;
    align-items: stretch; /* 确保子元素高度一致 */
}

.preview-left,
.preview-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0; /* 允许flex子项收缩 */
}

/* 确保左右两侧高度完全一致 */
.preview-left > *:first-child,
.preview-right > *:first-child {
    flex-shrink: 0; /* 标题栏不收缩 */
}

.preview-canvas-left,
.result-area {
    flex: 1;
    min-height: 0;
    overflow: auto;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    height: 52px; /* 固定高度确保左右一致，容纳下载按钮 */
    box-sizing: border-box;
}

.title-actions .download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

.title-actions .download-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.title-actions .download-btn:active {
    transform: translateY(0);
}

/* 确保下载按钮内所有元素都显示为白色 */
.title-actions .download-btn span {
    color: white;
}

.preview-canvas-left {
    flex: 1;
    display: flex;
    align-items: flex-start; /* 改为顶部对齐 */
    justify-content: center;
    padding: 5px 5px 0 5px; /* 只保留5px */
    overflow: auto;
}

.result-area {
    flex: 1;
    display: flex;
    align-items: flex-start; /* 改为顶部对齐 */
    justify-content: center;
    padding: 5px 5px 0 5px; /* 只保留5px */
    overflow: auto;
}

.result-area.single {
    display: flex;
}

.result-area.multiple {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 8px;
    padding: 8px;
}

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

.result-item.generating {
    background: linear-gradient(135deg,
        var(--bg-tertiary) 0%,
        rgba(99, 102, 241, 0.1) 50%,
        var(--bg-tertiary) 100%);
    background-size: 200% 200%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    animation: shimmerFlow 2s ease infinite;
}

.result-item.generating::before {
    content: '';
    position: absolute;
    width: 50px;
    height: 50px;
    border: 3px solid transparent;
    border-top-color: var(--accent, #6366f1);
    border-right-color: var(--accent, #6366f1);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.result-item.generating::after {
    content: 'AI 生成中...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, 40px);
    color: var(--text-tertiary, #888);
    font-size: 12px;
    white-space: nowrap;
    letter-spacing: 1px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes shimmerFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

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

.result-area img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.result-area.single img {
    width: 100%;
    height: 100%;
}

/* 结果图片可点击 */
.result-item img {
    cursor: pointer;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.result-item img:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

/* 单个下载按钮 */
.result-item {
    position: relative;
}

.result-item .item-download-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    z-index: 10;
}

.result-item:hover .item-download-btn {
    opacity: 1;
}

.result-item .item-download-btn:hover {
    background: var(--accent-primary);
    transform: scale(1.1);
}

.result-placeholder {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 3/4;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-glow);
    overflow: hidden;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 闪光动效容器 */
.placeholder-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

/* 闪光元素 */
.sparkle {
    position: absolute;
    font-size: 20px;
    opacity: 0;
    animation: sparkleFloat 4s ease-in-out infinite;
}

.sparkle-1 {
    top: 15%;
    left: 20%;
    animation-delay: 0s;
}

.sparkle-2 {
    top: 25%;
    right: 15%;
    animation-delay: 0.5s;
}

.sparkle-3 {
    top: 45%;
    left: 10%;
    animation-delay: 1s;
}

.sparkle-4 {
    bottom: 35%;
    right: 20%;
    animation-delay: 1.5s;
}

.sparkle-5 {
    bottom: 20%;
    left: 25%;
    animation-delay: 2s;
}

.sparkle-6 {
    top: 60%;
    right: 10%;
    animation-delay: 2.5s;
}

@keyframes sparkleFloat {
    0%, 100% {
        opacity: 0;
        transform: translateY(0) scale(0.5) rotate(0deg);
    }
    50% {
        opacity: 1;
        transform: translateY(-10px) scale(1) rotate(180deg);
    }
}

/* 占位符内容 */
.placeholder-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.placeholder-icon {
    font-size: 80px;
    animation: iconBounce 2s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.3));
}

@keyframes iconBounce {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-15px) scale(1.05);
    }
}

.placeholder-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    animation: textPulse 2s ease-in-out infinite;
}

@keyframes textPulse {
    0%, 100% {
        opacity: 0.7;
    }
    50% {
        opacity: 1;
    }
}

.placeholder-hint {
    font-size: 13px;
    color: var(--text-tertiary);
    max-width: 280px;
    line-height: 1.6;
}

/* 步骤提示 */
.placeholder-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 320px;
}

.step-item-small {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(99, 102, 241, 0.08);
    border-radius: 8px;
    border-left: 3px solid var(--accent-primary);
}

.step-item-small .step-num {
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.15);
    padding: 2px 6px;
    border-radius: 4px;
}

.step-item-small .step-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 设置图标可点击样式 */
.settings-icon {
    display: inline-block;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.2s;
    background: rgba(99, 102, 241, 0.1);
}

.settings-icon:hover {
    background: var(--accent-primary);
    transform: scale(1.1);
}

/* 步骤中的可点击按钮 */
.step-item-small .action-btn {
    display: inline-block;
    cursor: pointer;
    padding: 2px 8px;
    border-radius: 4px;
    transition: all 0.2s;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    font-weight: 500;
}

.step-item-small .action-btn:hover {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
    transform: scale(1.05);
    box-shadow: 0 2px 6px rgba(139, 92, 246, 0.3);
}

/* 背景装饰圆圈 */
.result-placeholder::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle,
        rgba(99, 102, 241, 0.1) 0%,
        transparent 70%);
    animation: circlePulse 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes circlePulse {
    0%, 100% {
        transform: scale(0.8);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.6;
    }
}

/* 第二个装饰圆圈 */
.result-placeholder::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle,
        rgba(139, 92, 246, 0.08) 0%,
        transparent 70%);
    animation: circlePulse 3s ease-in-out infinite reverse;
    pointer-events: none;
}

/* 生成进度显示 */
.generating-progress {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-glow);
}

.progress-animation {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    width: 100%;
    max-width: 400px;
    padding: 60px 40px;
}

.progress-ring-large {
    width: 200px;
    height: 200px;
    animation: ringPulse 2s ease-in-out infinite;
}

.progress-ring-large .progress-ring-bg {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 8;
}

.progress-ring-large .progress-ring-fill {
    fill: none;
    stroke: var(--accent-primary);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 283; /* 2 * PI * 45 */
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 0.5s ease;
}

@keyframes ringPulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 15px rgba(99, 102, 241, 0.4));
    }
    50% {
        transform: scale(1.03);
        filter: drop-shadow(0 0 30px rgba(99, 102, 241, 0.6));
    }
}

.progress-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.progress-content .progress-icon {
    font-size: 36px;
    animation: iconSpin 3s linear infinite;
}

@keyframes iconSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.progress-content .progress-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-primary);
    text-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

.progress-content .progress-detail {
    font-size: 12px;
    color: var(--text-secondary);
    animation: detailPulse 1.5s ease-in-out infinite;
}

@keyframes detailPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.preview-divider {
    width: 1px;
    background: var(--border-color);
}

/* 组合预览 */
.combo-preview {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 3/4;
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.preview-layer {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.layer-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--text-tertiary);
}

.placeholder-icon {
    font-size: 64px;
    opacity: 0.5;
}

.placeholder-text {
    font-size: 14px;
}

.preview-layer img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.preview-layer img:hover {
    transform: scale(1.2);
    filter: brightness(1.15);
}

/* 服装和配饰缩略图悬停效果 */
.outfit-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.outfit-item img:hover {
    transform: scale(1.2);
}

/* 服装层叠 */
.outfit-stack {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.outfit-item {
    width: 80px;
    height: 80px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

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

.outfit-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--text-tertiary);
}

.outfit-placeholder .placeholder-icon {
    font-size: 20px;
}

.outfit-placeholder .placeholder-text {
    font-size: 10px;
}

/* 快速操作 */
.quick-actions {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ==================== 右侧操作栏 ==================== */
.control-panel {
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

/* 状态卡片 */
.status-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
}

.status-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.status-icon {
    font-size: 16px;
}

.status-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.valid {
    background: var(--accent-primary);
    box-shadow: 0 0 8px var(--accent-primary);
}

.status-dot.invalid {
    background: var(--text-tertiary);
}

.status-text {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 输入卡片 */
.input-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
}

.input-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.input-icon {
    font-size: 16px;
}

.input-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.prompt-textarea {
    width: 100%;
    min-height: 80px;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    resize: vertical;
    font-family: inherit;
}

.prompt-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

/* 规格卡片 */
.specs-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

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

.specs-icon {
    font-size: 16px;
}

.specs-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.specs-collapse {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.specs-collapse:hover {
    color: var(--text-primary);
}

.specs-content {
    padding: 16px;
}

.spec-group {
    margin-bottom: 16px;
}

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

.spec-label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.spec-options {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.spec-option {
    flex: 1;
    min-width: 50px;
    padding: 8px 4px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.spec-option:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.spec-option.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
}

/* 比例预览 */
.ratio-preview {
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 2px;
    display: inline-block;
}

.ratio-1-1 { width: 16px; height: 16px; }
.ratio-3-4 { width: 12px; height: 16px; }
.ratio-4-3 { width: 16px; height: 12px; }
.ratio-9-16 { width: 9px; height: 16px; }
.ratio-16-9 { width: 16px; height: 9px; }

/* 生成按钮 */
.generate-card {
    margin-top: auto;
}

.generate-btn {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--accent-glow);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.6);
}

.generate-btn:active {
    transform: translateY(0);
}

.btn-cost {
    font-size: 11px;
    opacity: 0.8;
}

/* ==================== API 设置弹窗 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    max-width: 480px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.api-input-group {
    position: relative;
    margin-bottom: 16px;
}

.modal-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.modal-input {
    width: 100%;
    padding: 12px 50px 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
}

.visibility-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
}

.api-help {
    background: var(--bg-primary);
    padding: 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text-secondary);
}

.help-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.help-wechat-box {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    text-align: center;
}

.help-wechat-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-wechat-icon {
    font-size: 24px;
}

.help-wechat-id {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.help-copy-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.help-copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.help-copy-btn:active {
    transform: translateY(0);
}

.help-copy-btn.copied {
    background: #10b981;
}

.help-copy-btn .copy-text {
    color: white;
}

.modal-btn {
    flex: 1;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.modal-btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.modal-btn-secondary:hover {
    background: var(--bg-hover);
}

.modal-btn-primary {
    background: var(--accent-gradient);
    border: none;
    color: white;
}

.modal-btn-primary:hover {
    box-shadow: var(--shadow-glow);
}

/* ==================== 结果弹窗 ==================== */
.result-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 3000;
    display: none;
}

.result-modal.active {
    display: block;
}

.result-modal.active .modal-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-modal .modal-content {
    max-width: 800px;
    margin: 40px auto;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.result-body {
    padding: 24px;
    max-height: 70vh;
    overflow-y: auto;
}

.result-footer {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.result-btn {
    flex: 1;
    padding: 14px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.result-btn.secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.result-btn.primary {
    background: var(--accent-gradient);
    border: none;
    color: white;
}

/* ==================== 滚动条 ==================== */
.assets-panel::-webkit-scrollbar,
.control-panel::-webkit-scrollbar {
    width: 6px;
}

.assets-panel::-webkit-scrollbar-track,
.control-panel::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

.assets-panel::-webkit-scrollbar-thumb,
.control-panel::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.assets-panel::-webkit-scrollbar-thumb:hover,
.control-panel::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* ==================== 响应式 ==================== */
@media (max-width: 1400px) {
    .main-container {
        grid-template-columns: 240px 1fr 280px;
    }
}

@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
    }

    .assets-panel {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .control-panel {
        border-left: none;
        border-top: 1px solid var(--border-color);
    }

    .asset-tabs {
        flex-direction: row;
        overflow-x: auto;
    }

    .asset-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ==================== 图片查看器 ==================== */
.image-viewer-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
}

.image-viewer-modal.active {
    display: block;
}

.image-viewer-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
}

.image-viewer-container {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-viewer-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    overflow: hidden;
}

.image-viewer-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    transition: transform 0.3s ease;
}

/* 查看器按钮 */
.image-viewer-close,
.image-viewer-prev,
.image-viewer-next {
    position: absolute;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.image-viewer-close {
    top: 20px;
    right: 20px;
}

.image-viewer-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.image-viewer-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.image-viewer-close:hover,
.image-viewer-prev:hover,
.image-viewer-next:hover {
    background: rgba(255, 255, 255, 0.2);
}

.image-viewer-prev.hidden,
.image-viewer-next.hidden {
    opacity: 0;
    pointer-events: none;
}

/* 查看器工具栏 */
.image-viewer-toolbar {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0, 0, 0, 0.7);
    padding: 12px 20px;
    border-radius: 50px;
}

.viewer-btn {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

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

/* 图片计数器 */
.image-viewer-counter {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 14px;
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 16px;
    border-radius: 20px;
}

/* ==================== 生成进度条 ==================== */
.progress-overlay {
    display: none;
    /* 隐藏全屏遮罩，改为按钮内显示 */
}

.progress-container {
    text-align: center;
}

.progress-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}

.progress-icon {
    font-size: 32px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* 按钮内进度显示 */
.generate-btn.generating .btn-icon,
.generate-btn.generating .btn-text,
.generate-btn.generating .btn-cost {
    display: none;
}

.generate-btn.generating .btn-progress {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.generate-btn .btn-progress {
    font-size: 14px;
    color: white;
    display: none;
}

.progress-text {
    color: white;
    font-size: 16px;
    font-weight: 600;
    display: none; /* 隐藏按钮内的进度文字，与结果区域进度显示重复 */
}

.progress-percent {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    display: none; /* 隐藏按钮内的百分比文字 */
}

/* 环形进度条 */
.progress-ring {
    width: 60px;
    height: 60px;
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.2);
    stroke-width: 6;
}

.progress-ring-fill {
    fill: none;
    stroke: white;
    stroke-width: 6;
    stroke-linecap: round;
    stroke-dasharray: 283; /* 2 * PI * 45 */
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 0.5s ease;
}

/* 生成中按钮脉动效果 */
.generate-btn.generating {
    animation: generatingPulse 2s ease-in-out infinite;
    position: relative;
}

@keyframes generatingPulse {
    0%, 100% {
        box-shadow: var(--accent-glow),
                    0 0 20px rgba(99, 102, 241, 0.4);
    }
    50% {
        box-shadow: var(--accent-glow),
                    0 0 40px rgba(99, 102, 241, 0.8),
                    0 0 60px rgba(99, 102, 241, 0.4);
    }
}

/* 生成中按钮背景渐变动画 */
.generate-btn.generating {
    background: linear-gradient(135deg,
        #6366f1 0%,
        #8b5cf6 50%,
        #a855f7 100%);
    background-size: 200% 200%;
    animation: generatingGradient 3s ease infinite,
               generatingPulse 2s ease-in-out infinite;
}

@keyframes generatingGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.progress-bar {
    width: 300px;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

/* ==================== 标题操作按钮 ==================== */
.title-actions {
    display: flex;
    gap: 8px;
    margin-left: auto;
}

.title-actions .download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap; /* 防止文字换行 */
    box-shadow: var(--shadow-sm);
}

.title-actions .download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.title-actions .download-btn:active {
    transform: translateY(0);
}

/* 确保下载按钮内所有元素都显示为白色 */
.title-actions .download-btn span {
    color: white;
}

/* ==================== 烟花特效 ==================== */
.fireworks-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* ==================== 开屏动画 ==================== */
.intro-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #0f0f1a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    animation: fadeOut 0.8s ease 2.5s forwards;
}

.intro-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

.particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.intro-content {
    position: relative;
    z-index: 1;
    text-align: center;
    animation: introContent 1s ease forwards;
    opacity: 0;
    transform: translateY(30px);
}

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

.intro-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}

.intro-icon {
    font-size: 64px;
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.intro-title {
    font-size: 42px;
    font-weight: 700;
    background: linear-gradient(135deg, #ffd700, #6366f1, #ffd700);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.intro-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.intro-studio {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
}

.studio-text {
    font-size: 14px;
    color: var(--accent-primary);
    font-weight: 500;
}

.studio-divider {
    color: var(--text-tertiary);
}

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

.intro-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.loading-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffd700, #6366f1);
    border-radius: 2px;
    animation: loadingProgress 2s ease forwards;
}

@keyframes loadingProgress {
    from { width: 0%; }
    to { width: 100%; }
}

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

/* ==================== 品牌信息 ==================== */
.brand-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.footer-brand {
    flex: 1;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.footer-icon {
    font-size: 28px;
}

.footer-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.footer-tagline {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
}

.footer-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

.footer-studio {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.studio-label {
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.studio-name {
    font-size: 16px;
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.studio-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.info-dot {
    color: var(--border-color);
}

/* 微信联系方式 */
.footer-wechat {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.wechat-label {
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.wechat-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.wechat-icon {
    font-size: 18px;
}

.wechat-id {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.copy-btn:active {
    transform: translateY(0);
}

.copy-btn.copied {
    background: #10b981;
}

.copy-btn.copied .copy-text {
    content: '已复制';
}

/* ==================== 移动端适配 ==================== */
@media (max-width: 768px) {
    /* 顶栏优化 */
    .logo-text {
        display: none;
    }

    .layout-badge {
        font-size: 8px;
        padding: 2px 6px;
    }

    /* 金句区域 */
    .ai-quote-bar {
        padding: 8px 16px;
    }

    .quote-collapse-btn {
        display: block;
        position: absolute;
        top: 8px;
        right: 8px;
        width: 24px;
        height: 24px;
        background: rgba(0, 0, 0, 0.1);
        border: none;
        border-radius: 50%;
        color: var(--text-secondary);
        font-size: 16px;
        cursor: pointer;
        z-index: 10;
    }

    .ai-quote-bar.collapsed {
        padding: 8px 16px;
        min-height: 40px;
    }

    .ai-quote-bar.collapsed .quote-content {
        display: none;
    }

    /* 系统说明折叠 */
    .system-intro {
        position: relative;
    }

    /* 默认隐藏内容，只显示展开按钮 */
    .system-intro:not(.expanded) .intro-grid,
    .system-intro:not(.expanded) .use-cases,
    .system-intro:not(.expanded) .value-props {
        display: none;
    }

    .system-intro:not(.expanded) .intro-header {
        display: none;
    }

    /* 移动端展开按钮 */
    .mobile-intro-toggle {
        display: flex;
        justify-content: center;
        padding: 20px 0;
    }

    .expand-btn {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 12px 24px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        border: none;
        border-radius: var(--radius-lg);
        color: white;
        font-size: 15px;
        font-weight: 600;
        cursor: pointer;
        box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    }

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

    /* 展开后显示关闭按钮 */
    .system-intro.expanded .mobile-intro-toggle {
        display: none;
    }

    .mobile-intro-close {
        display: flex;
        justify-content: center;
        padding: 12px 0;
    }

    .collapse-btn {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 8px 20px;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        color: var(--text-secondary);
        font-size: 14px;
        cursor: pointer;
    }

    /* 在移动端显示这些按钮 */
    .mobile-intro-toggle,
    .mobile-intro-close,
    .quote-collapse-btn {
        display: flex;
    }

    .system-intro.expanded .mobile-intro-close {
        display: flex;
    }

    /* 系统说明 */
    .system-intro {
        padding: 40px 16px;
    }

    .intro-title {
        font-size: 28px;
    }

    .intro-subtitle {
        font-size: 15px;
    }

    .intro-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .intro-card {
        padding: 20px;
    }

    .card-icon {
        font-size: 24px;
    }

    .intro-card h3 {
        font-size: 17px;
    }

    .card-list li {
        font-size: 14px;
    }

    .case-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .case-item {
        padding: 16px 12px;
    }

    .case-icon {
        font-size: 28px;
    }

    .value-props {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .prop-item {
        padding: 16px 12px;
    }

    /* 主容器 */
    .main-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
    }

    .assets-panel {
        position: relative;
        width: 100%;
        height: auto;
        max-height: 60vh;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .assets-panel.collapsed {
        display: none;
    }

    .control-panel {
        position: relative;
        width: 100%;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }

    /* 素材网格 */
    .asset-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    /* 预览区域 */
    .preview-split {
        flex-direction: column;
        gap: 16px;
    }

    .preview-left,
    .preview-right {
        min-height: 300px;
    }

    .preview-divider {
        width: 100%;
        height: 1px;
    }

    /* 结果区域 */
    .result-area.multiple {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(4, 1fr);
    }

    /* 顶部栏 */
    .api-bar-content {
        padding: 12px 16px;
    }

    .logo-text {
        font-size: 14px;
    }

    .nav-link {
        display: none;
    }

    /* 品牌信息 */
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-divider {
        display: none;
    }

    .footer-studio {
        align-items: center;
    }

    /* 开屏动画优化 */
    .intro-screen {
        /* 移动端1秒后开始淡出 */
        animation: fadeOut 0.8s ease 1s forwards;
    }

    .intro-title {
        font-size: 28px;
    }

    .intro-icon {
        font-size: 48px;
    }

    /* 隐藏副标题 */
    .intro-subtitle {
        display: none;
    }

    /* 隐藏工作室信息 */
    .intro-studio {
        display: none;
    }

    /* 隐藏加载条 */
    .intro-loading {
        display: none;
    }

    /* Logo间距缩小 */
    .intro-logo {
        margin-bottom: 0;
        gap: 12px;
    }

    /* 图片查看器 */
    .image-viewer-toolbar {
        bottom: 20px;
        padding: 10px 16px;
    }

    .viewer-btn {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    /* 快捷选项 */
    .quick-prompts-panel {
        max-height: 300px;
        overflow-y: auto;
    }

    .category-options {
        flex-wrap: wrap;
    }

    /* 按钮调整 */
    .generate-btn {
        padding: 14px 24px;
        font-size: 14px;
    }

    /* 规格选择 */
    .specs-content {
        max-height: 300px;
        overflow-y: auto;
    }
}

@media (max-width: 480px) {
    /* 更小屏幕适配 */
    .asset-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .preview-left,
    .preview-right {
        min-height: 250px;
    }

    .intro-title {
        font-size: 24px;
    }

    .intro-icon {
        font-size: 40px;
    }

    .loading-bar {
        width: 160px;
    }

    /* 工具栏按钮调整 */
    .theme-toggle-btn,
    .settings-btn {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
}