/* 现代化扁平风格样式表 */

/* 基础重置和变量 */
:root {
    /* 主色调 - 扁平化 */
    --primary-color: #2563eb;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* 中性色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* 阴影 - 扁平化 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 滚动条优化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* 主容器 */
.main-container {
    min-height: 100vh;
    padding: var(--spacing-xl);
    max-width: 1400px;
    margin: 0 auto;
}

/* 页面标题 */
.page-header {
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.025em;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* 工具网格布局 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* 响应式布局 */
@media (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

/* 扁平化工具卡片 */
.tool-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.2s ease;
}

.tool-card:hover::before {
    opacity: 1;
}

/* 卡片头部 */
.card-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-md);
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.card-icon.primary {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
}

.card-icon.secondary {
    background: linear-gradient(135deg, var(--secondary-color), #8b5cf6);
}

.card-icon.accent {
    background: linear-gradient(135deg, var(--accent-color), #0891b2);
}

.card-icon.success {
    background: linear-gradient(135deg, var(--success-color), #059669);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* 卡片内容 */
.card-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.card-controls {
    margin-bottom: var(--spacing-lg);
}

.card-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.version-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.version-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* 扁平化按钮 */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    min-width: 120px;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    min-width: 120px;
}

.btn-secondary:hover {
    background: #5b21b6;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.btn-secondary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* 按钮点击效果 */
.btn-primary:active,
.btn-secondary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 工具提示样式 */
.tooltip {
    position: relative;
    cursor: pointer;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    margin-bottom: 8px;
}

.tooltip::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.8);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    margin-bottom: 4px;
}

.tooltip:hover::before,
.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* 按钮加载状态 */
.btn-loading {
    position: relative;
    overflow: hidden;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: loading-shimmer 1.5s infinite;
}

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

/* 卡片悬停效果 */
.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

/* 图标悬停动画 */
.card-icon:hover {
    transform: scale(1.1);
}

/* 响应式微调 */
@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-container {
        padding: var(--spacing-md);
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .tool-card {
        padding: var(--spacing-lg);
    }
    
    .card-header {
        flex-direction: column;
        text-align: center;
        align-items: flex-start;
    }
    
    .card-icon {
        margin-bottom: var(--spacing-sm);
        margin-right: 0;
    }
}

@media (max-width: 480px) {
    .main-container {
        padding: var(--spacing-sm);
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .tool-card {
        padding: var(--spacing-md);
    }
}

/* 加载动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tool-card {
    animation: fadeIn 0.3s ease-out;
}

/* 工具状态样式 */
.tool-card.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.tool-card.disabled::after {
    content: '维护中';
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--warning-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

/* 标签样式 */
.tag {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    margin-right: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.tag.new {
    background: var(--success-color);
    color: white;
}

.tag.beta {
    background: var(--warning-color);
    color: white;
}