/* PNG 压缩工具样式 */

/* 全局样式 */
:root {
    /* 设计系统令牌 */
    --primary-blue: #409eff;
    --primary-gray: #5b5b5b;
    --primary-red: #ff4444;
    --primary-red-hover: #FF8888;
    --primary-red-active: #FF5252;

    --text-primary: #333333;
    --text-secondary: #818181;
    --text-tertiary: #999999;
    --text-muted: #AAAAAA;
    --text-disabled: #D3D3D3;

    --bg-base: #fcfcfc;
    --bg-elevated: #ffffff;
    --bg-input: #F3F3F3;
    --bg-hover: #F5F5F7;
    --bg-active: #E8E8ED;

    --border-light: #F3F3F3;
    --border-base: #e3e3e3;
    --border-medium: #CCCCCC;
    --border-strong: #5b5b5b;

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

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;

    --font-size-xs: 10px;
    --font-size-sm: 12px;
    --font-size-base: 13px;
    --font-size-md: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;

    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-base);
    background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTYiIGhlaWdodD0iMTYiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGNpcmNsZSBjeD0iMiIgY3k9IjIiIHI9IjEiIGZpbGw9IiNlM2UzZTMiLz48L3N2Zz4=');
    background-repeat: repeat;
    background-size: 8px 8px;
    transition: background-color 0.3s, background-image 0.3s;
    color: var(--text-primary);
}

body.dark-mode {
    background-color: #1a1a1a;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTYiIGhlaWdodD0iMTYiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGNpcmNsZSBjeD0iMiIgY3k9IjIiIHI9IjEiIGZpbGw9IiMzMzMzMzMiLz48L3N2Zz4=');
    color: #e0e0e0;
}

#app {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 顶部区域 */
.header {
    background-color: var(--bg-elevated);
    border-bottom: 1px solid var(--border-base);
    padding: var(--space-4) 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    text-decoration: none;
}

.logo-link:hover {
    background-color: var(--bg-hover);
}

.logo-img {
    width: 24px;
    height: 24px;
    transition: opacity var(--transition-base);
}

/* 暗黑模式下的Logo样式 */
body.dark-mode .logo-link:hover {
    background-color: #333333;
}

.header-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.header-actions {
    display: flex;
    gap: var(--space-2);
}

.theme-toggle {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

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

/* 主要内容区 */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-6);
    width: 100%;
    min-height: 0;
    overflow-y: auto;
    /* 允许内容区域滚动 */
}

/* 拖拽区域 */
.drag-area {
    background-color: var(--bg-elevated);
    border: 2px dashed var(--border-base);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    margin-bottom: var(--space-6);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.drag-area:hover {
    border-color: var(--primary-blue);
    background-color: var(--bg-hover);
}

.drag-area.drag-over {
    border-color: var(--primary-blue);
    background-color: rgba(64, 158, 255, 0.05);
    transform: scale(1.01);
}

.drag-area-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.drag-icon {
    color: var(--text-tertiary);
    transition: color var(--transition-base);
}

.drag-area:hover .drag-icon,
.drag-area.drag-over .drag-icon {
    color: var(--primary-blue);
}

.drag-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.drag-description {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin: 0;
}

.drag-hint {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin: 0;
}

/* 图片列表区域 */
.image-list-section {
    background-color: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.section-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* 压缩程度滑块样式 */
.compression-slider-container {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background-color: var(--bg-input);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.compression-label {
    white-space: nowrap;
}

.compression-slider {
    width: 120px;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-base);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.compression-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-blue);
    cursor: pointer;
}

.compression-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-blue);
    cursor: pointer;
    border: none;
}

.compression-value {
    min-width: 30px;
    text-align: center;
    font-weight: 600;
    color: var(--primary-blue);
}

/* 图片列表 */
.image-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    max-height: 500px;
    overflow-y: auto;
    padding: var(--space-2);
}

/* 图片项 */
.image-item {
    background-color: var(--bg-base);
    border: 1px solid var(--border-base);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    transition: all var(--transition-base);
}

.image-item:hover {
    border-color: var(--border-medium);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.image-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.image-thumbnail {
    width: 100%;
    height: 150px;
    object-fit: contain;
    background-color: var(--bg-input);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-2);
}

.image-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.image-filename {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.image-stats {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.image-size {
    display: flex;
    gap: var(--space-2);
}

.original-size {
    text-decoration: line-through;
}

.compressed-size {
    color: var(--primary-blue);
}

.compression-rate {
    color: var(--success);
}

/* 进度条 */
.progress-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.progress-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--bg-input);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-blue);
    border-radius: 4px;
    transition: width var(--transition-fast);
}

/* 操作按钮区 */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-light);
}

/* 整体进度显示 */
.overall-progress {
    /* margin-top: var(--space-6); */
    padding: var(--space-4);
    background-color: var(--bg-base);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.overall-progress-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.overall-progress-stats {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    text-align: right;
}

/* 下载区域 */
.download-section {
    padding-top: 0;
    /* margin-top: var(--space-6);
    border-top: 1px solid var(--border-light); */
}

.download-stats {
    background-color: var(--bg-base);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

/* 按钮样式 */
.btn-large-primary {
    height: 44px;
    padding: 0 24px;
    border-radius: var(--radius-md);
    background: #ffffff;
    border: 1px solid #e6e6e6;
    color: #333333;
    font-size: 14px;
    cursor: pointer;
    min-width: 110px;
    transition: all var(--transition-base);
}

.btn-large-primary:hover {
    background: #f3f3f3;
    border-color: #d3d3d3;
}

.btn-large-primary:active {
    background: #eeeeee;
}

.btn-large-secondary {
    height: 44px;
    padding: 0 24px;
    border-radius: var(--radius-md);
    background: #5b5b5b;
    border: 1px solid #5b5b5b;
    color: #ffffff;
    font-size: 14px;
    cursor: pointer;
    min-width: 110px;
    transition: all var(--transition-base);
}

.btn-large-secondary:hover {
    background: #4b4b4b;
    border-color: #333333;
}

.btn-secondary {
    height: 28px;
    padding: 0 16px;
    background: #5b5b5b;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: #ffffff;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: #6b6b6b;
}

.btn-secondary:active {
    background: #4b4b4b;
}

/* 状态样式 */
.status {
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status.pending {
    background-color: rgba(230, 162, 60, 0.1);
    color: #e6a23c;
}

.status.compression {
    background-color: rgba(64, 158, 255, 0.1);
    color: var(--primary-blue);
}

.status.completed {
    background-color: rgba(103, 194, 58, 0.1);
    color: #67c23a;
}

.status.failed {
    background-color: rgba(255, 68, 68, 0.1);
    color: var(--primary-red);
}

/* 底部区域 */
.footer {
    /* background-color: var(--bg-elevated);
    border-top: 1px solid var(--border-base);
    */
    padding: var(--space-4) 0;
    margin-top: 24px;
    position: relative;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.footer-text {
    margin: 0;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-link:hover {
    color: var(--primary-blue);
}

/* 暗黑模式支持 */
body.dark-mode .header,
body.dark-mode .image-list-section,
body.dark-mode .footer {
    background-color: #2a2a2a;
    border-color: #404040;
}

body.dark-mode .header-title,
body.dark-mode .section-title,
body.dark-mode .image-filename {
    color: #e0e0e0;
}

body.dark-mode .drag-area,
body.dark-mode .image-item,
body.dark-mode .overall-progress,
body.dark-mode .download-stats {
    background-color: #1a1a1a;
    border-color: #404040;
}

body.dark-mode .drag-area:hover {
    background-color: #2a2a2a;
}

body.dark-mode .drag-area.drag-over {
    background-color: rgba(64, 158, 255, 0.1);
}

body.dark-mode .theme-toggle:hover {
    background-color: #333333;
}

body.dark-mode .btn-large-primary {
    background: #2a2a2a;
    border-color: #404040;
    color: #e0e0e0;
}

body.dark-mode .btn-large-primary:hover {
    background: #333333;
    border-color: #505050;
}

/* 响应式设计 */
@media (max-width: 768px) {

    .header-container,
    .main-content,
    .footer-content {
        padding: 0 var(--space-4);
    }

    .drag-area {
        padding: var(--space-6);
        min-height: 250px;
    }

    .image-list {
        grid-template-columns: 1fr;
        max-height: 400px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
        padding: var(--space-4);
    }

    .action-buttons,
    .download-buttons {
        flex-direction: column;
    }

    .btn-large-primary,
    .btn-large-secondary {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .header-title {
        font-size: var(--font-size-lg);
    }

    .drag-title {
        font-size: var(--font-size-md);
    }

    .image-list-section {
        padding: var(--space-4);
    }
}