/* ==================== 优化CSS变量定义 ==================== */
:root {
    /* 现代色彩系统 - 基于Material Design 3 */
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --secondary-gradient: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --error-gradient: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #a5b4fc;
    --secondary-color: #ec4899;
    --secondary-dark: #db2777;
    --success-color: #10b981;
    --success-dark: #059669;
    --warning-color: #f59e0b;
    --warning-dark: #d97706;
    --error-color: #ef4444;
    --error-dark: #dc2626;
    
    /* 进度条专用颜色 - 更现代的渐变 */
    --progress-start: #ff6b6b;
    --progress-quarter: #ffa500;
    --progress-half: #ffd700;
    --progress-three-quarter: #90ee90;
    --progress-complete: #10b981;
    --progress-glow: rgba(16, 185, 129, 0.3);
    
    /* 文本颜色系统 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-light: #f9fafb;
    --text-on-primary: #ffffff;
    --text-on-secondary: #ffffff;
    
    /* 背景颜色系统 */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-muted: #e5e7eb;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* 边框和阴影 */
    --border-color: #e5e7eb;
    --border-color-light: #f3f4f6;
    --border-color-dark: #d1d5db;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-color-lg: rgba(0, 0, 0, 0.15);
    --shadow-color-xl: rgba(0, 0, 0, 0.25);
    
    /* 尺寸系统 - 更精细的间距 */
    --border-radius-xs: 4px;
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-2xl: 20px;
    --border-radius-full: 9999px;
    
    --spacing-2xs: 2px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 40px;
    --spacing-4xl: 48px;
    
    /* 字体系统 */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* 动画系统 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* 响应式断点 */
    --breakpoint-sm: 480px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
    
    /* 玻璃拟态效果 */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --glass-backdrop: blur(8px);
    
    /* 新拟态效果 */
    --neumorphic-shadow-light: -4px -4px 8px rgba(255, 255, 255, 0.8);
    --neumorphic-shadow-dark: 4px 4px 8px rgba(0, 0, 0, 0.1);
    --neumorphic-shadow-inset-light: inset -2px -2px 4px rgba(255, 255, 255, 0.7);
    --neumorphic-shadow-inset-dark: inset 2px 2px 4px rgba(0, 0, 0, 0.1);
}

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

/* 隐藏屏幕阅读器专用元素 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==================== 页面布局 ==================== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    line-height: 1.6;
    color: var(--text-primary);
}

.container {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 20px 60px var(--shadow-color);
    padding: var(--spacing-3xl);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* ==================== SVG图标系统 ==================== */
.icon {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
    fill: currentColor;
    /* 优化SVG渲染 */
    shape-rendering: geometricPrecision;
    text-rendering: optimizeLegibility;
}

/* SVG图标尺寸控制 */
.icon-sm {
    width: 16px;
    height: 16px;
    min-width: 16px;
    min-height: 16px;
}

.icon-md {
    width: 24px;
    height: 24px;
    min-width: 24px;
    min-height: 24px;
}

.icon-lg {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
}

.icon-xl {
    width: 72px;
    height: 72px;
    min-width: 72px;
    min-height: 72px;
}

/* SVG图标颜色继承 */
.icon-primary {
    color: var(--primary-color);
}

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

.icon-success {
    color: var(--success-color);
}

.icon-warning {
    color: var(--warning-color);
}

.icon-error {
    color: var(--error-color);
}

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

/* SVG图标状态样式 */
.icon-pulse {
    animation: pulse 2s infinite;
}

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

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

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

/* SVG图标悬停效果 */
.icon:hover {
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

/* 确保SVG在高分辨率设备上的清晰度 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .icon {
        shape-rendering: crispEdges;
    }
    
    /* 高分辨率设备上的图片优化 */
    .header-icon {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
        filter: none;
    }
}

/* ==================== 动画定义 ==================== */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ==================== 页面头部 ==================== */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md) 0;
}

.header-icon-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    /* max-width: 100px; */
    margin-left: auto;
    margin-right: auto;
}

.header-icon {
    width: 200px;
    height: 80px;
    display: block;
    animation: bounce 2s infinite;
    object-fit: contain;
    object-position: center;
    max-width: 100%;
    max-height: 100%;
    transition: all var(--transition-normal);
    /* 防止图片拉伸变形 */
    aspect-ratio: 1 / 1;
    /* 优化图片渲染 */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    /* 确保图片质量 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.header-icon:hover {
    /* 移除所有hover效果，直接显示logo */
}

.header h1 {
    color: var(--text-primary);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    max-width: 80%;
    margin-left: auto;
    margin-right: auto;
}

.header-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
    margin-top: var(--spacing-md);
}

/* ==================== 徽章系统 ==================== */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
}

.badge-primary {
    background: var(--primary-gradient);
    color: var(--text-light);
}

.badge-secondary {
    background: var(--secondary-gradient);
    color: var(--text-light);
}

.badge-success {
    background: var(--success-gradient);
    color: var(--text-light);
}

/* ==================== 上传区域 ==================== */
.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    background: linear-gradient(135deg, #fafbfc 0%, #f5f7fa 100%);
    margin-bottom: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    -webkit-tap-highlight-color: rgba(102, 126, 234, 0.1);
    user-select: none;
    -webkit-user-select: none;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 0;
}

.upload-area:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.2);
}

.upload-area:hover::before {
    opacity: 0.08;
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #f5f7ff 0%, #eef2ff 100%);
    transform: scale(1.02);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.25);
}

.upload-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
}

.upload-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 16px;
    display: block;
    animation: float 3s ease-in-out infinite;
    flex-shrink: 0;
}

.upload-text {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.upload-hint {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

.file-input {
    display: none;
}

/* ==================== 文件信息展示 ==================== */
.file-info {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-muted) 100%);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    display: none;
    border-left: 5px solid var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.file-info.show {
    display: block;
    animation: slideInUp 0.3s ease;
}

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

.info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
}

/* ==================== 进度指示器 ==================== */
.progress-container {
    margin: var(--spacing-lg) 0;
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-container.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: slideInUp 0.4s ease;
}

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

.progress-label {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
    transition: color 0.3s ease;
}

.progress-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.progress-percentage {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 700;
    transition: all 0.3s ease;
    position: relative;
}

.progress-percentage::before {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0;
    animation: pulse 1.5s infinite;
}

.progress-percentage.updating::before {
    opacity: 1;
}

.progress-speed {
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.progress-eta {
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--bg-muted);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    width: 0%;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: var(--border-radius-sm);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 2s infinite;
}

.progress-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--primary-color) 100%);
    opacity: 0.3;
    animation: progressGlow 3s ease-in-out infinite;
}

/* 进度条不同阶段的颜色变化 */
.progress-fill[data-progress="0-25"] {
    background: linear-gradient(135deg, var(--progress-start) 0%, var(--progress-quarter) 100%);
}

.progress-fill[data-progress="26-50"] {
    background: linear-gradient(135deg, var(--progress-quarter) 0%, var(--progress-half) 100%);
}

.progress-fill[data-progress="51-75"] {
    background: linear-gradient(135deg, var(--progress-half) 0%, var(--progress-three-quarter) 100%);
}

.progress-fill[data-progress="76-100"] {
    background: linear-gradient(135deg, var(--progress-three-quarter) 0%, var(--progress-complete) 100%);
}

/* 添加脉冲动画效果 */
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

@keyframes progressGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* 进度条完成动画 */
@keyframes progressComplete {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* 进度条条纹动画 */
@keyframes progressStripes {
    0% { background-position: 0 0; }
    100% { background-position: 40px 0; }
}

/* 进度条条纹背景 */
.progress-fill.striped {
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 40px 40px;
    animation: progressStripes 2s linear infinite;
}

/* 进度条完成状态 */
.progress-fill.completed {
    animation: progressComplete 0.6s ease-in-out;
    box-shadow: 0 0 20px var(--progress-glow);
}

/* 进度条速度指示器 */
.progress-speed {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: var(--spacing-sm);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.progress-speed.show {
    opacity: 1;
}

/* 进度条预估时间 */
.progress-eta {
    font-size: 12px;
    color: var(--text-muted);
    margin-left: var(--spacing-sm);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.progress-eta.show {
    opacity: 1;
}

/* 响应式进度条 */
@media (max-width: 480px) {
    .progress-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .progress-speed,
    .progress-eta {
        font-size: 11px;
    }
}

/* ==================== 状态消息区域 ==================== */
.status-container {
    margin: var(--spacing-md) 0;
    display: none;
}

.status-container.show {
    display: block;
    animation: slideInUp 0.3s ease;
}

.status {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
    line-height: 1.5;
}

.status-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.status-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.status-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.status-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

.status-warning {
    background: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffc107;
}

/* ==================== 上传按钮 ==================== */
.upload-button {
    width: 100%;
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    margin-top: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.upload-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left 0.5s;
}

.upload-button:hover::before {
    left: 100%;
}

.upload-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.35);
}

.upload-button:active {
    transform: translateY(-1px);
}

.upload-button:disabled {
    background: linear-gradient(135deg, var(--text-muted) 0%, var(--text-secondary) 100%);
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.upload-button:disabled::before {
    display: none;
}

/* ==================== 上传结果展示 ==================== */
.result-container {
    margin-top: var(--spacing-lg);
    display: none;
    animation: slideInUp 0.3s ease;
}

.result-container.show {
    display: block;
}

.result-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--success-gradient);
    border-radius: var(--border-radius-xl);
    color: white;
    position: relative;
    overflow: hidden;
}

.result-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.result-icon {
    width: 64px;
    height: 64px;
    fill: white;
    margin-bottom: var(--spacing-md);
    display: block;
    animation: bounce-in 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes bounce-in {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

.result-title {
    font-size: var(--font-size-xl);
    color: white;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.result-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-base);
    position: relative;
    z-index: 1;
}

/* 优化的布局网格 - 两列布局，充分利用页面空间 */
.result-layout-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    align-items: start;
}

/* 左侧：应用信息区域 */
.result-info-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
    height: fit-content;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

.section-header svg {
    color: var(--primary-color);
}

.section-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
}

.result-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; /* 两列布局 */
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all var(--transition-normal);
}

.info-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.info-label {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.info-value {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
    text-align: right;
    max-width: 60%;
    word-break: break-word;
}

/* 下载区域 */
.download-section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color-light);
}

.section-title {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
}

.download-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.download-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.download-link:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.copy-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.copy-button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.download-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.download-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

.upload-method-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--border-radius-lg);
    font-size: 12px;
    font-weight: 600;
}

/* ==================== 表单样式 ==================== */
.form-section {
    margin-bottom: var(--spacing-lg);
    display: none;
    animation: slideInUp 0.3s ease;
}

.form-section.show {
    display: block;
}

.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

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

.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 15px;
    font-family: inherit;
    resize: vertical;
    min-height: 100px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    -webkit-tap-highlight-color: transparent;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-hint {
    margin-top: var(--spacing-sm);
    font-size: 13px;
    color: var(--text-secondary);
    text-align: right;
}

/* ==================== 高级设置 ==================== */
.advanced-settings {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

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

.settings-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.settings-toggle {
    font-size: 14px;
    color: var(--primary-color);
    transition: transform var(--transition-fast);
}

.settings-toggle.expanded {
    transform: rotate(180deg);
}

.settings-content {
    display: none;
}

.settings-content.show {
    display: block;
    animation: slideInUp 0.3s ease;
}

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

.checkbox {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.delay-input {
    width: 80px;
    padding: var(--spacing-sm) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
}

/* ==================== 二维码和结果展示优化 ==================== */

/* 下载链接样式 */
.download-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: white;
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    background: var(--primary-gradient);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.download-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

/* 复制按钮样式 */
.copy-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.copy-button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

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

.copy-button.copied {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

/* 二维码区域（大版本） - 右侧列布局 */
.qr-section-large {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
    display: none; /* 默认隐藏 */
    text-align: center;
    height: fit-content;
    position: sticky;
    top: var(--spacing-lg);
}

.qr-section-large.show {
    display: block; /* 显示时添加此类 */
}

.qr-code-container-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.qr-code-container-large:hover {
    transform: translateY(-2px);
}

/* 二维码区域样式 */
.qr-code-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
    display: none; /* 默认隐藏 */
}

.qr-code-section.show {
    display: block; /* 显示时添加此类 */
}

.qr-code-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.qr-code-container:hover {
    transform: translateY(-2px);
}

.qr-code {
    width: 180px;
    height: 180px;
    background: var(--bg-primary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow-color);
    margin-bottom: var(--spacing-md);
}

/* 大尺寸二维码样式 */
.qr-code-large {
    width: 300px;
    height: 300px;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 24px var(--shadow-color-lg);
    margin: 0 auto var(--spacing-xl) auto;
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color-light);
    transition: all var(--transition-normal);
}

.qr-code-large:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.qr-code::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shimmer 2s infinite;
}

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

.qr-code-hint {
    color: var(--text-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    text-align: center;
    max-width: 320px;
    margin: 0 auto;
    font-weight: var(--font-weight-medium);
}

/* 二维码图片样式 */
.qr-code-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
}

/* 大尺寸二维码图片 */
.qr-code-large img.qr-code-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--border-radius-md);
}

/* 二维码加载状态 */
.qr-loading {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-md);
    text-align: center;
}

.qr-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

.qr-loading-text p {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-sm);
}

.qr-sub-hint {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-md) !important;
}

.qr-copy-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.qr-copy-button:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* 二维码成功状态 */
.qr-success {
    text-align: center;
}

.qr-success-hint {
    margin-top: var(--spacing-md);
    color: var(--success-color);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

/* 二维码超时状态 */
.qr-timeout {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-md);
}

.qr-timeout-icon {
    font-size: 40px;
    margin-bottom: var(--spacing-md);
}

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

.qr-timeout-text p {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-sm);
}

/* 二维码备用方案 */
.qr-fallback {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-md);
    border: 1px dashed var(--border-color);
}

.qr-fallback p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* 加载动画 */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 二维码加载状态优化 */
.qr-loading {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-md);
    text-align: center;
}

.qr-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

.qr-loading-text p {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-sm);
}

.qr-sub-hint {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-md) !important;
}

.qr-copy-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.qr-copy-button:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* 二维码成功状态 */
.qr-success {
    text-align: center;
}

.qr-success-hint {
    margin-top: var(--spacing-md);
    color: var(--success-color);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
}

/* 响应式设计 - 上传结果区域 */
@media (max-width: 992px) {
    .result-layout-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .qr-section-large {
        position: static; /* 移除粘性定位 */
    }
}

/* 平板设备优化 */
@media (min-width: 768px) and (max-width: 992px) {
    .result-layout-grid {
        grid-template-columns: 1fr; /* 平板设备使用单列布局 */
        gap: var(--spacing-lg);
    }
    
    .qr-code-large {
        width: 260px;
        height: 260px;
    }
    
    .info-item {
        padding: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .result-container {
        margin-top: var(--spacing-lg);
    }
    
    .result-layout-grid {
        grid-template-columns: 1fr; /* 移动端改为单列 */
        gap: var(--spacing-md);
    }
    
    .result-info-section,
    .qr-section-large {
        padding: var(--spacing-lg);
    }
    
    .download-actions {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .qr-code-large {
        width: 240px;
        height: 240px;
    }
    
    .result-info-grid {
        grid-template-columns: 1fr; /* 移动端信息项改为单列 */
        gap: var(--spacing-md);
    }
}

/* 移除result-header样式，使用简单的通知 */

/* 上传方法徽章 */
.upload-method-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.upload-method-badge[data-method="proxy"] {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.upload-method-badge[data-method="direct"] {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.upload-method-badge[data-method="fallback"] {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* ==================== Toast 通知样式 ==================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    pointer-events: none;
}

/* 成功提示悬浮框 */
.success-notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success-gradient);
    color: white;
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 9999;
    opacity: 0;
    transition: all var(--transition-normal);
    pointer-events: none;
    max-width: 90%;
    width: 500px;
}

.success-notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.success-notification.hide {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
}

.success-notification-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.success-notification-content {
    flex: 1;
}

.success-notification-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.success-notification-message {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.toast {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    pointer-events: auto;
    transform: translateX(100%);
    opacity: 0;
    transition: all var(--transition-normal);
    border-left: 4px solid var(--primary-color);
    max-width: 320px;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    flex-shrink: 0;
    color: var(--primary-color);
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1.4;
}

/* Toast 成功样式 */
.toast.success {
    border-left-color: var(--success-color);
}

.toast.success .toast-icon {
    color: var(--success-color);
}

/* Toast 错误样式 */
.toast.error {
    border-left-color: var(--error-color);
}

.toast.error .toast-icon {
    color: var(--error-color);
}

/* Toast 警告样式 */
.toast.warning {
    border-left-color: var(--warning-color);
}

.toast.warning .toast-icon {
    color: var(--warning-color);
}

/* Toast 响应式设计 */
@media (max-width: 768px) {
    .toast-container {
        top: auto;
        bottom: 20px;
        right: 10px;
        left: 10px;
    }
    
    .toast {
        max-width: 100%;
    }
}

/* 页面底部样式优化 */
.footer {
    text-align: center;
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color-light);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: var(--border-radius-full);
}

.footer-text {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

/* ==================== PC端大屏幕优化 ==================== */
@media (min-width: 1200px) {
    .container {
        padding: var(--spacing-4xl) var(--spacing-3xl);
        max-width: 1400px;
    }
    
    .upload-area {
        min-height: 250px;
    }
    
    .upload-content {
        min-height: 200px;
    }
    
    /* 优化大屏幕上的两列布局 */
    .result-layout-grid {
        gap: var(--spacing-2xl);
    }
    
    .qr-section-large {
        position: sticky;
        top: var(--spacing-xl);
    }
    
    .qr-code-large {
        width: 320px;
        height: 320px;
    }
}

@media (min-width: 1600px) {
    .container {
        max-width: 1600px;
        padding: var(--spacing-5xl) var(--spacing-4xl);
    }
    
    .result-layout-grid {
        gap: var(--spacing-3xl);
    }
    
    .qr-code-large {
        width: 340px;
        height: 340px;
    }
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-2xl) var(--spacing-lg);
        margin: var(--spacing-md);
        border-radius: var(--border-radius-lg);
    }
    
    .header h1 {
        font-size: 28px;
        line-height: 1.3;
        margin-bottom: var(--spacing-sm);
    }
    
    .header-icon-container {
        max-width: 120px;
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .header-icon {
        width: 80px;
        height: 80px;
        padding: var(--spacing-xs);
        animation: bounce 1.5s infinite;
    }
    
    .header-subtitle {
        font-size: 15px;
        max-width: 90%;
        line-height: 1.5;
    }
    
    .header-badges {
        gap: var(--spacing-xs);
        margin-top: var(--spacing-sm);
    }
    
    .badge {
        padding: var(--spacing-2xs) var(--spacing-sm);
        font-size: 11px;
    }
    
    .upload-area {
        padding: var(--spacing-xl) var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .upload-icon {
        width: 56px;
        height: 56px;
        margin-bottom: var(--spacing-md);
    }
    
    .upload-text {
        font-size: 16px;
        margin-bottom: var(--spacing-xs);
    }
    
    .upload-hint {
        font-size: 13px;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .form-textarea {
        font-size: 14px;
        padding: var(--spacing-md);
        min-height: 90px;
    }
    
    .settings-header {
        padding-bottom: var(--spacing-md);
    }
    
    .delay-setting {
        flex-wrap: wrap;
    }
    
    .upload-button {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 16px;
        margin-top: var(--spacing-xl);
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .result-value {
        max-width: 100%;
        text-align: left;
    }
    
    .progress-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .progress-info {
        width: 100%;
        justify-content: space-between;
    }
    
    .progress-speed,
    .progress-eta {
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--spacing-xl) var(--spacing-md);
        margin: var(--spacing-xs);
        border-radius: var(--border-radius-md);
    }
    
    .header h1 {
        font-size: 24px;
        line-height: 1.2;
        margin-bottom: var(--spacing-xs);
    }
    
    .header-icon-container {
        max-width: 100px;
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .header-icon {
        width: 60px;
        height: 60px;
        padding: 6px;
        animation: bounce 1.2s infinite;
        box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
    }
    
    .header-subtitle {
        font-size: 14px;
        max-width: 95%;
        line-height: 1.4;
        margin-bottom: var(--spacing-sm);
    }
    
    .header-badges {
        gap: 4px;
        margin-top: var(--spacing-xs);
    }
    
    .badge {
        padding: 3px var(--spacing-xs);
        font-size: 10px;
    }
    
    .upload-area {
        padding: var(--spacing-lg) var(--spacing-sm);
        margin-bottom: var(--spacing-md);
        border-width: 2px;
    }
    
    .upload-icon {
        width: 48px;
        height: 48px;
        margin-bottom: var(--spacing-sm);
    }
    
    .upload-text {
        font-size: 15px;
        margin-bottom: 6px;
    }
    
    .upload-hint {
        font-size: 12px;
    }
    
    .file-info {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .form-textarea {
        font-size: 14px;
        padding: var(--spacing-sm);
        min-height: 80px;
        border-width: 1px;
    }
    
    .delay-setting {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .delay-input {
        width: 80px;
    }
    
    .upload-button {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 15px;
        margin-top: var(--spacing-md);
        border-radius: var(--border-radius-md);
    }
    
    .result-grid {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .result-header {
        margin-bottom: var(--spacing-lg);
        padding: var(--spacing-lg);
    }
    
    .result-header h2 {
        font-size: 18px;
    }
    
    .result-subtitle {
        font-size: 13px;
    }
    
    .footer {
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-md);
    }
    
    .progress-header {
        gap: 4px;
    }
    
    .progress-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    
    .progress-speed,
    .progress-eta {
        font-size: 10px;
    }
    
    /* 小屏幕下的图标容器优化 */
    .qr-code-container {
        padding: var(--spacing-md);
    }
    
    .qr-code {
        width: 140px;
        height: 140px;
    }
}