/* Magic UI 风格样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Magic UI 色彩系统 - 优化版 */
    --primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --secondary: linear-gradient(135deg, #ec4899 0%, #f97316 100%);
    --accent: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --warning: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    
    /* 玻璃拟态效果 */
    --glass: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* 文字颜色 */
    --text-primary: rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* 背景 - 更现代的渐变 */
    --bg-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --bg-card: rgba(255, 255, 255, 0.05);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 动态背景粒子效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 75% 25%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 25% 75%, rgba(240, 147, 251, 0.2) 0%, transparent 50%);
    animation: backgroundFloat 20s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes backgroundFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

/* 紧凑的头部 */
.compact-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    animation: slideInDown 0.6s ease-out;
}

.compact-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #a8edea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.compact-header .subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
    opacity: 0.8;
}

/* 主上传区域 - Hero Section */
.hero-upload-section {
    margin-bottom: var(--spacing-xl);
    animation: slideInUp 0.6s ease-out 0.1s both;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
}

.hero-upload-section .upload-area {
    background: var(--glass);
    backdrop-filter: blur(25px);
    border: 3px dashed var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl) var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 700px;
    min-height: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glass-shadow);
}

.hero-upload-section .upload-area:hover,
.hero-upload-section .upload-area.drag-over {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.12);
    transform: scale(1.02);
    box-shadow: 0 25px 50px rgba(59, 130, 246, 0.25);
}

.hero-upload-section .upload-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    animation: float 3s ease-in-out infinite;
}

.hero-upload-section .upload-area h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.hero-upload-section .upload-area p {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* 底部预设快捷栏 */
.preset-shortcuts {
    margin-bottom: var(--spacing-xl);
    animation: slideInUp 0.6s ease-out 0.3s both;
    text-align: center;
}

.preset-items {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.preset-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    min-width: 80px;
    backdrop-filter: blur(10px);
}

.preset-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.preset-item.active {
    background: var(--accent);
    border-color: rgba(59, 130, 246, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.preset-item.active .preset-label {
    color: white;
    font-weight: 600;
}

.preset-icon {
    font-size: 1.8rem;
    display: block;
}

.preset-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-align: center;
    line-height: 1.2;
    white-space: nowrap;
}

.preset-hint {
    margin-top: var(--spacing-md);
}

.preset-hint span {
    font-size: 0.85rem;
    color: var(--text-muted);
    opacity: 0.8;
}

/* 用途卡片详细布局 */
.usage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.usage-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.usage-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 10px;
}

/* 尺寸选项 */
.size-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.size-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.size-option:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.size-option.selected {
    background: var(--accent);
    border-color: rgba(79, 172, 254, 0.5);
    transform: scale(1.02);
}

.size-name {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

.size-dims {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
}

.single-size {
    text-align: center;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.single-size .size-dims {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* 用途提示 */
.usage-tips {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-xs);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    line-height: 1.3;
}

/* 主上传区域 */
.main-upload-section {
    margin-bottom: var(--spacing-xl);
    animation: slideInUp 0.8s ease-out 0.6s both;
}

.upload-area {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 3px dashed var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
    transform: scale(1.02);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.upload-area h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.upload-area p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.upload-btn {
    color: #3b82f6;
    font-weight: 600;
    text-decoration: underline;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-btn:hover {
    color: #06b6d4;
}

.upload-hints {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

/* 快速平台选择 */
.quick-platforms {
    background: var(--glass);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
}

.quick-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.quick-platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.quick-platform {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.quick-platform:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    border-color: #3b82f6;
}

.quick-platform.active {
    background: var(--accent);
    transform: translateY(-3px);
}

.quick-platform span {
    display: block;
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xs);
}

.quick-platform div {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* 可折叠选择器 */
.platform-selector,
.usage-selector {
    margin-bottom: var(--spacing-lg);
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.selector-header {
    padding: var(--spacing-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.selector-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

.selector-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.toggle-icon {
    font-size: 1rem;
    color: var(--text-secondary);
    transition: transform var(--transition-fast);
}

.selector-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    max-height: 500px;
    overflow: hidden;
    transition: all var(--transition-normal);
}

/* 折叠状态 */
.collapsed .selector-content {
    max-height: 0;
    padding: 0 var(--spacing-lg);
}

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

/* 展开状态的边框 */
.platform-selector:not(.collapsed) .selector-header,
.usage-selector:not(.collapsed) .selector-header {
    border-bottom-color: var(--glass-border);
}

/* 处理区域 - 新的简洁布局 */
.processing-section {
    animation: slideInUp 0.6s ease-out both;
}

.image-workspace {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

/* 左侧预览区域 */
.preview-area {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
}

.preview-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.file-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.file-name {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.preview-container {
    position: relative;
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: rgba(0, 0, 0, 0.1);
}

/* 右侧控制面板 */
.control-panel {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    height: fit-content;
    overflow: hidden;
}

.panel-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
}

.panel-header h3 {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.selected-preset {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.preset-icon {
    font-size: 1rem;
}

.control-sections {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.control-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.section-title span:first-child {
    font-size: 1.1rem;
}

/* 尺寸控制 */
.size-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.size-input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.size-input-group input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    text-align: center;
    padding: var(--spacing-xs);
}

.size-input-group input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
}

.multiply {
    color: var(--text-muted);
    font-weight: bold;
}

.aspect-lock {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
}

.aspect-lock:hover,
.aspect-lock.active {
    background: var(--accent);
}

.size-info {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

/* 质量控制 */
.quality-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.quality-slider-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.quality-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.quality-value {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.quality-presets {
    display: flex;
    gap: var(--spacing-xs);
}

.preset-btn {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preset-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.preset-btn.active {
    background: var(--accent);
    border-color: rgba(79, 172, 254, 0.5);
    color: white;
}

/* 格式控制 */
.format-controls select {
    width: 100%;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.format-controls select:focus {
    outline: none;
    border-color: #4facfe;
    background: rgba(255, 255, 255, 0.1);
}

/* 操作按钮区域 */
.action-section {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.action-section .primary-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-icon {
    font-size: 1.2rem;
}

.secondary-actions {
    display: flex;
    justify-content: center;
}

.secondary-actions .secondary-btn {
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-lg);
}

/* 结果区域 */
.result-section {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: slideInUp 0.5s ease-out;
}

.result-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-header h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.result-stats {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-gallery {
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.result-actions {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.result-actions button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* 统计信息样式 */
.result-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 100px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.stat-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-value.success {
    color: #28c76f;
}

.stat-value.warning {
    color: #ffc107;
}

/* 结果项样式 */
.result-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.result-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.result-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.2);
}

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

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

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.result-item:hover .image-overlay {
    opacity: 1;
}

.image-overlay button {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    padding: var(--spacing-sm);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.image-overlay button:hover {
    background: white;
    transform: scale(1.1);
}

.result-details {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.result-filename {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-dimensions {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
}

.result-size-comparison {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8rem;
}

.original-size {
    color: var(--text-muted);
}

.arrow {
    color: var(--text-secondary);
}

.new-size {
    color: var(--text-primary);
    font-weight: 600;
}

.compression-ratio {
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    padding: 2px 6px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
}

.compression-ratio.success {
    color: #28c76f;
    background: rgba(40, 199, 111, 0.2);
}

.compression-ratio.warning {
    color: #ffc107;
    background: rgba(255, 193, 7, 0.2);
}

/* 预览模态框 */
.preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.preview-modal.show {
    opacity: 1;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.preview-modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
}

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    text-align: center;
}

.modal-body img {
    max-width: 100%;
    max-height: 60vh;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    margin-bottom: var(--spacing-md);
}

.preview-info {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.modal-actions {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
    text-align: center;
}

.control-group {
    margin-bottom: var(--spacing-lg);
}

.control-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-primary);
}

.control-group input,
.control-group select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.control-group input:focus,
.control-group select:focus {
    outline: none;
    border-color: #4facfe;
    box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.2);
}

.size-inputs {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.size-inputs input {
    flex: 1;
}

.aspect-lock {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs);
    cursor: pointer;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.aspect-lock:hover,
.aspect-lock.active {
    background: var(--accent);
}

/* 滑块样式 */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-track {
    background: var(--bg-card);
    height: 6px;
    border-radius: 3px;
    border: 1px solid var(--glass-border);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    height: 20px;
    width: 20px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    border: 2px solid white;
}

/* 按钮样式 */
.primary-btn, .secondary-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.primary-btn {
    background: var(--accent);
    color: white;
    box-shadow: 0 10px 25px rgba(79, 172, 254, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(79, 172, 254, 0.4);
}

.secondary-btn {
    background: var(--glass);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.secondary-btn:hover {
    transform: translateY(-2px);
    background: var(--bg-card);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.action-buttons button {
    flex: 1;
}

/* 预览区域 */
.preview-area {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--glass-shadow);
}

.preview-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    overflow: hidden;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#previewCanvas {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* 结果区域 */
.result-area {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.result-item {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.result-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.result-item img {
    max-width: 100%;
    max-height: 150px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.result-info {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
    opacity: 1;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 2px solid #4facfe;
    animation: spin 1s linear infinite;
    margin-right: var(--spacing-xs);
}

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

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

/* 进入动画 */
@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .image-workspace {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .control-panel {
        order: -1; /* 移动端优先显示控制面板 */
    }
    
    .hero-upload-section {
        min-height: 40vh;
    }
    
    .hero-upload-section .upload-area {
        min-height: 280px;
        padding: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .compact-header h1 {
        font-size: 1.5rem;
    }
    
    .compact-header .subtitle {
        font-size: 0.8rem;
    }
    
    /* 调整主上传区域 */
    .hero-upload-section {
        min-height: 35vh;
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-upload-section .upload-area {
        min-height: 250px;
        padding: var(--spacing-lg) var(--spacing-md);
        margin: 0 var(--spacing-sm);
    }
    
    .hero-upload-section .upload-icon {
        font-size: 4rem;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-upload-section .upload-area h2 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-upload-section .upload-area p {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-md);
    }
    
    /* 调整预设快捷栏 */
    .preset-items {
        gap: var(--spacing-md);
        justify-content: space-around;
    }
    
    .preset-item {
        min-width: 70px;
        padding: var(--spacing-sm) var(--spacing-xs);
    }
    
    .preset-icon {
        font-size: 1.5rem;
    }
    
    .preset-label {
        font-size: 0.7rem;
    }
    
    .upload-hints {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .size-input-group {
        flex-direction: column;
    }
    
    .size-input-group input {
        text-align: left;
    }
    
    .multiply {
        align-self: center;
        transform: rotate(90deg);
    }
    
    .quality-presets {
        flex-direction: column;
    }
    
    .result-gallery {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .result-stats {
        justify-content: space-between;
    }
    
    .stat-item {
        min-width: auto;
        flex: 1;
        text-align: center;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .preview-info {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .preset-items {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }
    
    .preset-item {
        min-width: auto;
    }
    
    .preset-label {
        font-size: 0.65rem;
        line-height: 1.1;
    }
    
    .hero-upload-section .upload-area {
        margin: 0;
        min-height: 220px;
    }
    
    .hero-upload-section .upload-area h2 {
        font-size: 1.3rem;
    }
    
    .hero-upload-section .upload-area p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    .platform-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .platform-card {
        padding: var(--spacing-md);
    }
    
    .upload-area {
        padding: var(--spacing-lg);
    }
}

/* 页脚 */
.footer {
    text-align: center;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

/* 成功/错误状态 */
.success {
    color: #28c76f;
}

.error {
    color: #ff6b6b;
}

.warning {
    color: #ffc107;
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-card);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width var(--transition-normal);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* 预设详情页面样式 */
.preset-detail-section {
    min-height: 100vh;
    padding: 0;
    background: var(--bg-primary);
    position: relative;
}

.preset-detail-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    animation: fadeInUp 0.6s ease-out;
}

/* 简洁实用的头部区域 */
.detail-header {
    padding: var(--spacing-xs) 0;
    margin-bottom: var(--spacing-xs);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

/* 顶部导航栏 - 紧凑设计 */
.header-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: translateX(-2px);
}

.site-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: right;
    line-height: 1.2;
    opacity: 0.6;
}

/* 预设标题 - 低调简洁 */
.preset-title {
    display: flex;
    align-items: center;
    gap: 6px;
}

.preset-icon-large {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    backdrop-filter: blur(10px);
}

.preset-title-text h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.preset-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0;
    opacity: 0.5;
}

/* 信息卡片网格 */
.preset-info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.info-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    animation: slideInUp 0.6s ease-out;
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--glass-shadow);
    background: rgba(255, 255, 255, 0.1);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.card-icon {
    font-size: 1.5rem;
}

.card-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 尺寸规格 */
.size-specs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.size-spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.size-spec-name {
    color: var(--text-primary);
    font-weight: 500;
}

.size-spec-dimensions {
    color: var(--text-secondary);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.9rem;
}

.size-spec-ratio {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* 技术规格 */
.tech-specs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tech-spec-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tech-spec-item:last-child {
    border-bottom: none;
}

.tech-spec-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.tech-spec-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* 使用建议 */
.usage-tips {
    color: var(--text-secondary);
    line-height: 1.6;
}

.usage-tips .tip-highlight {
    color: var(--text-primary);
    font-weight: 500;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 优雅的上传区域 - 重点突出 */
.preset-upload-area {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    width: min(600px, 90%);
    aspect-ratio: 1.2/1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.preset-upload-area::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.03), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.preset-upload-area:hover::before {
    opacity: 1;
    animation: shimmerPreset 1.5s infinite;
}

.preset-upload-area:hover {
    border-color: rgba(255, 255, 255, 0.25);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.preset-upload-area .upload-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    animation: floating 3s ease-in-out infinite;
    opacity: 0.8;
}

.preset-upload-area h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.preset-upload-area p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
    opacity: 0.8;
}

.preset-upload-hints {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.preset-upload-hints span {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 500;
}

/* 简洁的信息卡片区域 */
.preset-info-compact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.info-card-compact {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    backdrop-filter: blur(15px);
    padding: var(--spacing-xs);
    transition: all var(--transition-normal);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.info-card-compact:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.card-header-compact {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 6px;
}

.card-header-compact .card-icon {
    font-size: 0.9rem;
    opacity: 0.7;
}

.card-header-compact h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* 简化版尺寸规格 - 更紧凑 */
.info-card-compact .size-spec-item {
    padding: 4px 8px;
    margin-bottom: 3px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    transition: all var(--transition-fast);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.info-card-compact .size-spec-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.info-card-compact .size-spec-item:last-child {
    margin-bottom: 0;
}

.info-card-compact .size-spec-name {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
}

.info-card-compact .size-spec-dimensions {
    font-size: 0.75rem;
    font-family: 'Monaco', 'Menlo', monospace;
    color: var(--text-secondary);
}

.info-card-compact .size-spec-ratio {
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0.6;
}

/* 简化版技术规格 - 更紧凑 */
.info-card-compact .tech-spec-item {
    padding: 3px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.info-card-compact .tech-spec-item:last-child {
    border-bottom: none;
}

.info-card-compact .tech-spec-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.info-card-compact .tech-spec-value {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* 简化版使用建议 - 更紧凑 */
.info-card-compact .usage-tips {
    font-size: 0.75rem;
    line-height: 1.3;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* 动画效果 */
@keyframes shimmerPreset {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* 预设详情页面响应式设计 */
@media (max-width: 1024px) {
    .preset-info-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .preset-info-compact {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .preset-title {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .preset-detail-container {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    /* 移动端头部 - 更加紧凑 */
    .detail-header {
        padding: var(--spacing-sm) 0;
        margin-bottom: var(--spacing-md);
    }
    
    .header-nav {
        margin-bottom: var(--spacing-sm);
    }
    
    .site-title {
        font-size: 0.75rem;
        line-height: 1.2;
    }
    
    .back-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .preset-title {
        gap: var(--spacing-sm);
    }
    
    .preset-icon-large {
        width: 50px;
        height: 50px;
        font-size: 1.8rem;
    }
    
    .preset-title-text h2 {
        font-size: 1.5rem;
    }
    
    .preset-subtitle {
        font-size: 0.9rem;
    }
    
    /* 移动端上传区域 */
    .preset-upload-area {
        padding: var(--spacing-lg) var(--spacing-md);
        min-height: 200px;
    }
    
    .preset-upload-area .upload-icon {
        font-size: 2.5rem;
    }
    
    .preset-upload-area h3 {
        font-size: 1.3rem;
    }
    
    .preset-upload-area p {
        font-size: 0.9rem;
    }
    
    .preset-upload-hints {
        gap: 8px;
    }
    
    .preset-upload-hints span {
        font-size: 0.8rem;
        padding: 3px 8px;
    }
    
    /* 移动端信息卡片 */
    .preset-info-compact {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .info-card-compact {
        padding: var(--spacing-sm);
    }
    
    .card-header-compact h4 {
        font-size: 0.9rem;
    }
    
    .info-card-compact .size-spec-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    
    .info-card-compact .tech-spec-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
}