/* ==================== 设计系统变量 ==================== */
:root {
    /* 色彩系统 */
    --color-primary: #3B82F6;
    --color-primary-dark: #2563EB;
    --color-primary-light: #60A5FA;
    --color-secondary: #8B5CF6;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;
    
    /* 中性色 */
    --color-gray-50: #FAFBFC;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* 间距系统 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* 动画 */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ==================== 全局样式重置 ==================== */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--color-gray-800);
    line-height: 1.5;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}

/* ==================== 布局组件 ==================== */

/* 分类按钮样式 */
.category-btn {
    color: var(--color-gray-600);
    background: transparent;
}

.category-btn:hover {
    color: var(--color-gray-800);
    background: var(--color-gray-50);
}

.category-btn.active {
    color: var(--color-primary);
    background: var(--color-blue-50);
}

/* ==================== 瀑布流布局 ==================== */
/* 
响应式列数计算：
- 每列最小宽度：200px
- 列间距：16px
- 左侧栏：208px (w-52)
- 右侧栏：320px (w-80)
- 内容区padding：48px
- 总侧边占用：576px

断点 = 目标列数需要的内容区宽度 + 576px
*/

.masonry-grid {
    column-count: 6;       /* 默认6列（超大屏） */
    column-gap: 1rem;
}

/* 5列：需要内容区≥1064px，屏幕≥1640px */
@media (max-width: 1856px) {
    .masonry-grid {
        column-count: 5;
    }
}

/* 4列：需要内容区≥848px，屏幕≥1424px */
@media (max-width: 1640px) {
    .masonry-grid {
        column-count: 4;
    }
}

/* 3列：需要内容区≥632px，屏幕≥1208px */
@media (max-width: 1424px) {
    .masonry-grid {
        column-count: 3;
    }
}

/* 2列：需要内容区≥416px，屏幕≥992px */
@media (max-width: 1208px) {
    .masonry-grid {
        column-count: 2;
    }
}

/* 1列：手机 */
@media (max-width: 640px) {
    .masonry-grid {
        column-count: 1;
    }
}

/* ==================== 应用卡片 ==================== */
.app-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    break-inside: avoid;  /* 瀑布流：避免卡片被分割 */
    margin-bottom: 1rem;
    display: inline-block;
    width: 100%;
}

.app-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.app-card-cover {
    width: 100%;
    background: var(--color-gray-100);
    position: relative;
    overflow: hidden;
    line-height: 0;        /* 移除图片下方间隙 */
    cursor: pointer;       /* 提示可点击 */
}

.app-card-cover:hover {
    opacity: 0.95;
}

.app-card-cover img,
.app-card-cover video {
    width: 100%;
    height: auto;          /* 自动高度，完全按原始比例 */
    object-fit: cover;     /* 填充宽度 */
    display: block;
}

.app-card-body {
    padding: var(--spacing-md);
    cursor: pointer;  /* 提示标题/描述区域可点击 */
}

.app-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-card-desc {
    font-size: 12px;
    color: var(--color-gray-500);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;     /* 改为3行，增加高度差异 */
    -webkit-box-orient: vertical;
    line-height: 1.5;
}

.app-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
    font-size: 11px;
    color: var(--color-gray-400);
}

.app-card-credits {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--color-primary);
    font-weight: 500;
}

/* 立即使用按钮 */
.app-card-use-btn {
    width: 100%;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    color: white;
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
}

.app-card-use-btn:hover {
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.app-card-use-btn svg {
    width: 16px;
    height: 16px;
}

/* 视频音量提示图标 */
.video-sound-hint {
    position: absolute;
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    border-radius: 6px;
    color: white;
    font-size: 11px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
    max-width: calc(100% - 16px);
}

.app-card:hover .video-sound-hint {
    opacity: 1;
}

.video-sound-hint.unmuted {
    background: rgba(59, 130, 246, 0.9);
}

.video-sound-hint.warning {
    background: rgba(245, 158, 11, 0.9);
}

.video-sound-hint svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.video-sound-hint span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}


/* ==================== 骨架屏 ==================== */
.app-skeleton {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

/* ==================== 历史记录卡片 ==================== */
.history-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow var(--transition-base);
    will-change: box-shadow;
}

.history-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.history-card-preview {
    position: relative;
    width: 100%;
    padding-top: 75%; /* 4:3 比例，更适合展示 */
    background: var(--color-gray-100);
    overflow: hidden;
}

.history-card-img,
.history-card-icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.history-card-img {
    object-fit: cover;
}

.history-card-img video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-card-icon-bg {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-50);
}

/* 多结果数量角标 */
.history-card-count {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
}

.history-card-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.6);
    border-radius: 50%;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.history-card-preview:hover .history-card-play-icon {
    background: rgba(0, 0, 0, 0.8);
}

.history-card-info {
    padding: var(--spacing-sm);
}

.history-card-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.history-card-time {
    font-size: 11px;
    color: var(--color-gray-500);
}

.history-card-action-btn {
    padding: 6px;
    border-radius: var(--radius-md);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.history-card-action-btn:hover {
    background: var(--color-primary);
    color: white;
}

/* 兼容旧样式 */
.history-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.history-item:hover {
    background: var(--color-gray-50);
}

.history-item-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--color-gray-100);
    flex-shrink: 0;
    overflow: hidden;
}

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

.history-item-content {
    flex: 1;
    min-width: 0;
}

.history-item-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-800);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item-meta {
    font-size: 11px;
    color: var(--color-gray-500);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item-time {
    font-size: 11px;
    color: var(--color-gray-400);
    white-space: nowrap;
}

/* ==================== 任务状态 ==================== */
.task-progress {
    padding: var(--spacing-sm);
    background: var(--color-blue-50);
    border-radius: var(--radius-md);
}

.task-progress-bar {
    height: 4px;
    background: var(--color-gray-200);
    border-radius: 2px;
    overflow: hidden;
    margin-top: var(--spacing-xs);
}

.task-progress-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width var(--transition-slow);
}

/* ==================== 表单样式 ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

/* 图片上传紧凑样式 */
.image-upload-compact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.image-preview-compact {
    min-width: 80px;
    min-height: 80px;
    max-width: 200px;
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-gray-50);
}

.image-preview-compact img {
    display: block;
    max-width: 200px;
    max-height: 200px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.image-preview-compact svg {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
}

/* ==================== 图片上传区域优化 ==================== */
.image-upload-area {
    width: 120px;
    height: 120px;
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    background: var(--color-gray-50);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.image-upload-area:hover {
    border-color: var(--color-primary);
    background: rgba(59, 130, 246, 0.05);
}

.upload-placeholder {
    text-align: center;
    color: var(--color-gray-400);
    padding: var(--spacing-sm);
}

.upload-placeholder svg {
    width: 32px;
    height: 32px;
    margin: 0 auto 8px;
}

.upload-placeholder p {
    font-size: 12px;
    margin: 0;
}

.image-preview-container {
    position: relative;
    max-width: 100%;
    width: auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast);
    border: 2px solid var(--color-gray-200);
    display: inline-block;
}

.image-preview-container:hover {
    transform: scale(1.02);
    border-color: var(--color-primary);
}

.image-preview-container img {
    display: block;
    max-width: 300px;
    max-height: 300px;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* 上传加载状态 */
.image-upload-loading {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
}

/* 关闭按钮动画 */
@keyframes fade-out {
    to {
        opacity: 0;
        transform: scale(0.98);
    }
}

.animate-fade-out {
    animation: fade-out 0.2s ease-out forwards;
}

/* 移动端图片上传优化 */
@media (max-width: 768px) {
    .image-upload-area {
        width: 100%;
        max-width: 200px;
    }
    
    .image-preview-container {
        max-width: 100%;
    }
    
    .image-preview-container img {
        max-width: 100%;
        max-height: 250px;
    }
}

/* ==================== 音频上传区域样式 ==================== */
.audio-upload-area {
    width: 100%;
    min-height: 100px;
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    background: var(--color-gray-50);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.audio-upload-area:hover {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.audio-preview-container {
    width: 100%;
}

.audio-preview-container audio {
    width: 100%;
    border-radius: var(--radius-md);
}

.audio-preview-container button {
    display: inline-block;
    padding: 4px 12px;
    font-size: 13px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.audio-preview-container button:hover {
    background: rgba(59, 130, 246, 0.1);
}

/* ==================== 表单样式 ==================== */

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    min-height: 80px;
    resize: vertical;
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.btn-secondary:hover {
    background: var(--color-gray-200);
}

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 13px;
}

/* ==================== 弹出层 ==================== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* ==================== 快捷面板伸缩 ==================== */
#quickPanel {
    position: relative;
}

#quickPanel.collapsed {
    width: 0 !important;
    min-width: 0 !important;
    border-left: none;
    overflow: visible !important;
}

#quickPanel.collapsed #panelContent {
    opacity: 0;
    visibility: hidden;
}

#quickPanel.collapsed #togglePanelBtn {
    left: -40px;
    border-radius: 8px 0 0 8px;
}

#togglePanelBtn {
    transition: all var(--transition-base);
}

#togglePanelIcon {
    transition: transform var(--transition-base);
}

/* ==================== 响应式设计 ==================== */
/* Pad和桌面：快捷面板在右侧浮动 */
@media (max-width: 1280px) {
    #quickPanel {
        position: fixed;
        right: 0;
        top: 56px;
        bottom: 0;
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: 40;
    }
    
    #quickPanel.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
    
    /* 隐藏伸缩按钮（移动端用底部导航） */
    #togglePanelBtn {
        display: none;
    }
    
    /* 右侧面板收起后，重新计算列数（只有左侧栏占用空间） */
    /* 内容区宽度 = 屏幕宽度 - 208px(左侧栏) - 48px(padding) = 屏幕宽度 - 256px */
    
    /* 1280px屏幕：内容区1024px → 可显示4-5列 */
    .masonry-grid {
        column-count: 4;
    }
}

@media (max-width: 1100px) {
    /* 1100px屏幕：内容区844px → 可显示3-4列 */
    .masonry-grid {
        column-count: 3;
    }
}

@media (max-width: 900px) {
    /* 900px屏幕：内容区644px → 可显示3列 */
    .masonry-grid {
        column-count: 3;
    }
}

@media (max-width: 768px) {
    #sidebar {
        position: fixed;
        left: 0;
        top: 56px;
        bottom: 0;
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: 40;
    }
    
    #sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
    
    /* 两侧栏都收起后，重新计算列数（全屏可用） */
    /* 内容区宽度 = 屏幕宽度 - 48px(padding) */
    
    /* 768px屏幕：内容区720px → 可显示3列 */
    .masonry-grid {
        column-count: 3;
    }
    
    .modal-content {
        margin: var(--spacing-md);
    }
}

@media (max-width: 640px) {
    /* 640px屏幕：内容区592px → 可显示2列 */
    .masonry-grid {
        column-count: 2;
    }
}

@media (max-width: 480px) {
    /* 480px屏幕（小手机）：内容区432px → 2列 */
    .masonry-grid {
        column-count: 2;
    }
}

@media (max-width: 400px) {
    /* 400px以下（超小手机）：1列 */
    .masonry-grid {
        column-count: 1;
    }
}

/* ==================== 工具类 ==================== */
.hidden {
    display: none !important;
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.transition-all {
    transition: all var(--transition-base);
}

/* Loading 动画 */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* 淡入动画 */
@keyframes fade-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-fade-in {
    animation: fade-in 0.2s ease-out;
}

/* Toast 样式 */
.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    min-width: 250px;
    animation: slideIn var(--transition-base);
}

@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-danger);
}

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

/* ==================== 按钮样式补充 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--color-gray-200);
    color: var(--color-gray-700);
}

.btn-secondary:hover {
    background: var(--color-gray-300);
}

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
}

/* 渐变按钮 */
.btn-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
    transition: all var(--transition-base);
    border: none;
}

.btn-gradient:hover {
    background: linear-gradient(135deg, #5568d3 0%, #6a4294 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* 渐变文字 */
.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}