/* 基础样式和变量定义 */
/* 全局重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 品牌色彩系统 - 以深蓝色为主调 */
    --brand-primary: #1e40af;        /* 主品牌色 */
    --brand-secondary: #3b82f6;      /* 辅助品牌色 */
    --brand-tertiary: #60a5fa;       /* 第三级品牌色 */
    
    /* 中性色阶 - 确保充足对比度 */
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;
    
    /* 语义色彩 - 增强可访问性 */
    --success-50: #ecfdf5;
    --success-500: #10b981;
    --success-600: #059669;
    --success-700: #047857;
    
    --warning-50: #fffbeb;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-700: #b45309;
    
    --error-50: #fef2f2;
    --error-500: #ef4444;
    --error-600: #dc2626;
    --error-700: #b91c1c;
    
    /* 浅色主题配色 - 增强毛玻璃效果 */
    --bg-primary: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 25%, #f3e8ff 50%, #fce7f3 75%, #fef7f7 100%);
    --bg-secondary: rgba(255, 255, 255, 0.85);
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-glass: rgba(255, 255, 255, 0.65);
    --bg-glass-light: rgba(255, 255, 255, 0.45);
    --bg-glass-strong: rgba(255, 255, 255, 0.85);
    --bg-surface: #ffffff;
    --bg-overlay: rgba(15, 23, 42, 0.08);
    
    /* 文本颜色 - 确保对比度 ≥ 4.5:1 */
    --text-primary: #0f172a;         /* 对比度: 19.47:1 */
    --text-secondary: #334155;       /* 对比度: 12.32:1 */
    --text-tertiary: #64748b;        /* 对比度: 7.15:1 */
    --text-inverse: #ffffff;         /* 反色文本 */
    --text-muted: #94a3b8;          /* 弱化文本 对比度: 4.54:1 */
    
    /* 边框和分割线 */
    --border-light: rgba(226, 232, 240, 0.8);
    --border-medium: rgba(203, 213, 225, 0.9);
    --border-strong: rgba(148, 163, 184, 0.9);
    --border-accent: rgba(30, 64, 175, 0.3);
    
    /* 阴影系统 - 增强层次感 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glass: 0 8px 32px rgba(30, 64, 175, 0.15);
    --shadow-colored: 0 10px 15px -3px rgba(30, 64, 175, 0.1), 0 4px 6px -4px rgba(30, 64, 175, 0.1);
    
    /* 交互状态色彩 */
    --accent-color: var(--brand-primary);
    --hover-color: var(--brand-secondary);
    --active-color: var(--brand-tertiary);
    --focus-color: var(--brand-primary);
    --success-color: var(--success-500);
    --warning-color: var(--warning-500);
    --error-color: var(--error-500);
    
    /* 玻璃态效果变量 - 增强版 */
    --glass-backdrop: blur(20px) saturate(180%);
    --glass-backdrop-light: blur(16px) saturate(150%);
    --glass-backdrop-strong: blur(28px) saturate(200%);
    --glass-border: 1px solid rgba(255, 255, 255, 0.25);
    --glass-border-light: 1px solid rgba(255, 255, 255, 0.15);
    --glass-border-strong: 1px solid rgba(255, 255, 255, 0.35);
    --glass-highlight: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(255, 255, 255, 0.05) 100%);
    --glass-highlight-light: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.05) 100%);
    --glass-highlight-strong: linear-gradient(135deg, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.08) 100%);
}





body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}





.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* 玻璃态基础样式 - 增强版 */
.glass-effect {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: var(--glass-border);
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-effect::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-highlight);
    border-radius: inherit;
    pointer-events: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

/* 轻量级毛玻璃效果 */
.glass-effect-light {
    background: var(--bg-glass-light);
    backdrop-filter: var(--glass-backdrop-light);
    -webkit-backdrop-filter: var(--glass-backdrop-light);
    border: var(--glass-border-light);
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-effect-light::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-highlight-light);
    border-radius: inherit;
    pointer-events: none;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

/* 强化毛玻璃效果 */
.glass-effect-strong {
    background: var(--bg-glass-strong);
    backdrop-filter: var(--glass-backdrop-strong);
    -webkit-backdrop-filter: var(--glass-backdrop-strong);
    border: var(--glass-border-strong);
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-effect-strong::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-highlight-strong);
    border-radius: inherit;
    pointer-events: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}











/* 选择状态 */
::selection {
    background: var(--accent-color);
    color: var(--text-inverse);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}

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





/* 玻璃态增强效果 - 更新版 */
.glass-morphism {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: var(--glass-border);
    box-shadow: var(--shadow-glass);
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-morphism::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-highlight);
    border-radius: inherit;
    pointer-events: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

/* 毛玻璃悬停效果 */
.glass-morphism:hover {
    background: var(--bg-glass-strong);
    backdrop-filter: var(--glass-backdrop-strong);
    -webkit-backdrop-filter: var(--glass-backdrop-strong);
    border: var(--glass-border-strong);
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.glass-morphism:hover::before {
    opacity: 1;
}

/* 点击反馈效果 - 通用样式 */
.click-feedback {
    position: relative;
    overflow: hidden;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.click-feedback::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
    pointer-events: none;
    z-index: 10;
}

.click-feedback.clicked::after {
    width: 300px;
    height: 300px;
}

/* 按钮点击反馈效果 */
.btn-click-feedback {
    transform: scale(0.95);
    transition: transform 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-click-feedback:active {
    transform: scale(0.92);
}

/* 卡片点击反馈效果 */
.card-click-feedback {
    transform: translateY(-1px) scale(0.98);
    transition: transform 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-click-feedback:active {
    transform: translateY(0) scale(0.96);
}

/* 波纹效果 */
.ripple-effect {
    position: relative;
    overflow: hidden;
}

.ripple-effect::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease, opacity 0.4s ease;
    pointer-events: none;
    z-index: 5;
}

.ripple-effect.ripple::before {
    width: 200px;
    height: 200px;
    opacity: 0;
}

/* 脉冲效果 */
.pulse-feedback {
    animation: pulse-click 0.3s ease-out;
}

@keyframes pulse-click {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(30, 64, 175, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(30, 64, 175, 0.1);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(30, 64, 175, 0);
    }
}

/* 震动效果 */
.shake-feedback {
    animation: shake-click 0.3s ease-out;
}

@keyframes shake-click {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}