/* 高端科技风格CSS样式 - 优化版 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主题颜色 */
    --primary-color: #0071e3;
    --secondary-color: #00d2ff;
    --accent-color: #00c7be;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --bg-primary: #0a0a1a;
    --bg-secondary: #0f0f25;
    
    /* 玻璃态效果 */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border-light: rgba(255, 255, 255, 0.1);
    
    /* 动画和阴影 */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-soft: 0 8px 20px rgba(0, 0, 0, 0.15);
    --border-radius: 1.5rem;
    
    /* 高亮文本 */
    --highlight-gradient-start: #667eea;
    --highlight-gradient-end: #764ba2;
    --highlight-glow-color: rgba(102, 126, 234, 0.6);
    
    /* 响应式字体大小 */
    --font-size-xs: clamp(0.75rem, 2vw, 0.875rem);
    --font-size-sm: clamp(0.875rem, 2vw, 1rem);
    --font-size-md: clamp(1rem, 3vw, 1.25rem);
    --font-size-lg: clamp(1.25rem, 4vw, 1.75rem);
    --font-size-xl: clamp(1.5rem, 5vw, 2.5rem);
    --font-size-xxl: clamp(2rem, 6vw, 3.5rem);
    
    /* 间距 */
    --spacing-xs: clamp(0.25rem, 1vw, 0.5rem);
    --spacing-sm: clamp(0.5rem, 2vw, 1rem);
    --spacing-md: clamp(1rem, 3vw, 1.5rem);
    --spacing-lg: clamp(1.5rem, 4vw, 2.5rem);
    --spacing-xl: clamp(2rem, 5vw, 4rem);
}

/* 基础样式 */
body {
    font-family: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    scroll-behavior: smooth;
    min-height: 100vh;
    -webkit-overflow-scrolling: touch;
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100% !important;
    text-size-adjust: 100% !important;
}

/* 交互元素基础样式 */
a, button {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

/* 图片基础样式 */
img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 小屏幕特殊处理 */
@media (max-width: 320px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Header Styles */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: fixed;
    width: 100%;
    z-index: 1000;
    top: 0;
    border-bottom: 1px solid var(--glass-border-light);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.header-content {
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    transition: all 0.3s ease;
    flex-wrap: wrap;
}

/* 滚动时调整header样式 */
header.scrolled {
    padding: var(--spacing-xs) 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.logo-container {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 113, 227, 0.1);
    border-radius: 10px;
    transition: var(--transition-smooth);
}

.logo-container:hover {
    transform: scale(1.05);
    background-color: rgba(0, 113, 227, 0.15);
}

/* Logo image proportional scaling inside container */
.logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    position: relative;
    transition: var(--transition-smooth);
    padding: 0.5rem 1rem;
    border-radius: 1.5rem;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

nav a:hover {
    color: var(--primary-color);
    background: rgba(0, 113, 227, 0.15);
}

nav a:hover::after {
    width: 100%;
}

/* Typography */
h1 {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    text-align: center;
}

h2 {
    font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    letter-spacing: -0.3px;
    /* 现代化设计 - 简化效果提高性能 */
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

/* 完整的白色线条外边框 */
.section-title {
    position: relative;
    border: 1.6px solid rgb(162, 190, 232);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.05));
}

h3 {
    font-family: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    font-weight: 600;
    letter-spacing: -0.2px;
}

p {
    font-size: 2rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 2rem auto;
    line-height: 1.8;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* 高亮文本样式 - 用于强调文本 */

.highlight-text {
    font-size: 2.8rem;
    font-weight: 600;
    position: relative;
    display: inline-block;
    margin: -12px 8px;
    /* 渐变文字效果 */
    background: linear-gradient(135deg, var(--highlight-gradient-start) 0%, var(--highlight-gradient-end) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    /* 简化高亮效果提高性能 */
    text-shadow: 0 0 10px var(--highlight-glow-color);
    letter-spacing: 4.5px;
}

/* 食物随机选择器样式 */
.food-randomizer {
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    position: relative;
    padding: 0 1rem;
}

.food-display {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg) var(--spacing-md);
    width: 80%;
    max-width: 400px;
    text-align: center;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.food-prompt {
    font-size: var(--font-size-xxl);
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 10px rgba(0, 113, 227, 0.3);
    transition: text-shadow 0.3s ease;
}

/* 合并运行和停止状态样式，减少冗余 */
.food-prompt.running,
.food-prompt.stopped {
    text-shadow: 0 0 15px rgba(0, 113, 227, 0.5);
}

.food-result {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--accent-color); /* 使用CSS变量 */
    text-shadow: 0 0 5px rgba(0, 199, 190, 0.5);
    transition: all 0.3s ease;
}

/* 旋转动画状态 - 简化样式 */
.food-result.rotating {
    color: var(--secondary-color);
    text-shadow: 0 0 20px rgba(0, 210, 255, 0.5);
    position: relative;
    z-index: 10;
}

/* 浮动菜品名样式 */
.floating-food {
    position: absolute;
    color: white;
    font-size: 1.2rem;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    pointer-events: none;
    z-index: 1;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

/* food-display容器的定位已在前面的样式中定义 */

.food-controls {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

/* 淡雅色调按钮 - 适应深色背景 */
.food-btn, .main-btn {
    /* 统一尺寸 */
    width: 180px;
    height: 50px;
    padding: 0;
    
    /* 基础样式 */
    font-size: var(--font-size-sm);
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    letter-spacing: 0.5px;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
    
    /* 淡雅科技风格 - 适应深色背景 */
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    background: linear-gradient(135deg, #4d84c0, #6a96d4);
    box-shadow: 
        0 8px 20px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(77, 132, 192, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    
    /* 定位和层级 */
    position: relative;
    overflow: hidden;
    z-index: 1;
    
    /* 动画效果 */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(1rem);
}

/* 按钮淡雅发光边框效果 */
.food-btn::before, .main-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    padding: 1px;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.8), 
        #4d84c0, 
        #6a96d4, 
        rgba(255, 255, 255, 0.8)
    );
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    pointer-events: none;
    opacity: 0.8;
    transition: opacity 0.3s ease, background-position 0.6s ease;
    background-size: 200% 200%;
    background-position: 0% 0%;
    z-index: -1;
}

/* 按钮背景光效 - 保持亮度 */
.food-btn::after, .main-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
    z-index: -1;
}

/* 按钮悬停效果 - 淡雅发光增强 */
.food-btn:hover:not(:disabled), .main-btn:hover:not(:disabled) {
    transform: translateY(calc(1rem - 4px));
    box-shadow: 
        0 12px 25px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(77, 132, 192, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.food-btn:hover:not(:disabled)::before, .main-btn:hover:not(:disabled)::before {
    opacity: 0.9;
    background-position: 100% 100%;
}

.food-btn:hover:not(:disabled)::after, .main-btn:hover:not(:disabled)::after {
    width: 220px;
    height: 220px;
}

/* 按钮点击效果 - 淡雅反馈 */
.food-btn:active:not(:disabled), .main-btn:active:not(:disabled) {
    transform: translateY(calc(1rem - 2px));
    box-shadow: 
        0 6px 15px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(77, 132, 192, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* 开始状态按钮 - 淡雅蓝色 */
.main-btn.start-state {
    background: linear-gradient(135deg, #4d84c0, #6a96d4);
    box-shadow: 
        0 8px 20px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(77, 132, 192, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.main-btn.start-state::before {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.8), 
        #4d84c0, 
        #6a96d4, 
        rgba(255, 255, 255, 0.8)
    );
    background-size: 200% 200%;
}

.main-btn.start-state:hover:not(:disabled) {
    box-shadow: 
        0 12px 25px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(77, 132, 192, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 停止状态按钮 - 淡雅红色 */
.main-btn.stop-state {
    background: linear-gradient(135deg, #d6677a, #e28091);
    box-shadow: 
        0 8px 20px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(214, 103, 122, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.main-btn.stop-state::before {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.8), 
        #d6677a, 
        #e28091, 
        rgba(255, 255, 255, 0.8)
    );
    background-size: 200% 200%;
}

.main-btn.stop-state:hover:not(:disabled) {
    box-shadow: 
        0 12px 25px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(214, 103, 122, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 换一个状态按钮 - 淡雅青色 */
.main-btn.change-state {
    background: linear-gradient(135deg, #5bb3ac, #76c4bd);
    box-shadow: 
        0 8px 20px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(91, 179, 172, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.main-btn.change-state::before {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.8), 
        #5bb3ac, 
        #76c4bd, 
        rgba(255, 255, 255, 0.8)
    );
    background-size: 200% 200%;
}

.main-btn.change-state:hover:not(:disabled) {
    box-shadow: 
        0 12px 25px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(91, 179, 172, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 按钮禁用状态 */
.food-btn:disabled, .main-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: translateY(1rem);
    box-shadow: none;
    border-color: rgba(255, 255, 255, 0.05);
}

.food-btn:disabled::before, .main-btn:disabled::before {
    opacity: 0.3;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .food-result {
        font-size: 1.5rem;
    }
    
    .food-controls {
        flex-direction: column;
        align-items: center;
    }
    
    /* 移动端按钮样式 - 适应深色背景 */
    .food-btn, .main-btn {
        /* 移动端统一尺寸 */
        width: 160px;
        height: 48px;
        font-size: 0.85rem;
        font-weight: 700;
        letter-spacing: 0.4px;
        text-shadow: 0 0 4px rgba(255, 255, 255, 0.3);
        transform: translateY(1rem);
        padding: 0;
        
        /* 移动端高端科技风格 - 适应深色背景 */
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 10px;
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        box-shadow: 
            0 6px 14px rgba(0, 0, 0, 0.4),
            0 0 16px rgba(0, 113, 227, 0.6),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
        
        /* 定位和层级 */
        position: relative;
        overflow: hidden;
        z-index: 1;
        
        /* 动画效果 */
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    /* 移动端按钮发光边框效果 - 增强对比度 */
    .food-btn::before, .main-btn::before {
        content: '';
        position: absolute;
        inset: 0;
        border-radius: 10px;
        padding: 1px;
        background: linear-gradient(135deg, 
            rgba(255, 255, 255, 0.8), 
            var(--primary-color), 
            var(--secondary-color), 
            rgba(255, 255, 255, 0.8)
        );
        mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
        mask-composite: exclude;
        -webkit-mask-composite: xor;
        pointer-events: none;
        opacity: 0.9;
        transition: opacity 0.3s ease, background-position 0.6s ease;
        background-size: 200% 200%;
        background-position: 0% 0%;
        z-index: -1;
    }
    
    /* 移动端按钮背景光效 - 增加亮度 */
    .food-btn::after, .main-btn::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.35);
        transform: translate(-50%, -50%);
        transition: width 0.5s ease, height 0.5s ease;
        z-index: -1;
    }
    
    /* 移动端按钮悬停效果 - 增强发光 */
    .food-btn:hover:not(:disabled), .main-btn:hover:not(:disabled) {
        transform: translateY(calc(1rem - 3px));
        box-shadow: 
            0 8px 18px rgba(0, 0, 0, 0.5),
            0 0 24px rgba(0, 113, 227, 0.8),
            inset 0 1px 0 rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.3);
    }
    
    .food-btn:hover:not(:disabled)::before, .main-btn:hover:not(:disabled)::before {
        opacity: 1;
        background-position: 100% 100%;
    }
    
    .food-btn:hover:not(:disabled)::after, .main-btn:hover:not(:disabled)::after {
        width: 180px;
        height: 180px;
    }
    
    /* 移动端按钮点击效果 - 强化反馈 */
    .food-btn:active:not(:disabled), .main-btn:active:not(:disabled) {
        transform: translateY(calc(1rem - 1px));
        box-shadow: 
            0 4px 10px rgba(0, 0, 0, 0.4),
            0 0 16px rgba(0, 113, 227, 0.6),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    
    /* 移动端开始状态按钮 - 蓝色科技风 */
    .main-btn.start-state {
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        box-shadow: 
            0 6px 14px rgba(0, 0, 0, 0.4),
            0 0 16px rgba(0, 113, 227, 0.6),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    
    .main-btn.start-state::before {
        background: linear-gradient(135deg, 
            rgba(255, 255, 255, 0.8), 
            var(--primary-color), 
            var(--secondary-color), 
            rgba(255, 255, 255, 0.8)
        );
        background-size: 200% 200%;
    }
    
    /* 移动端停止状态按钮 - 红色警示风 */
    .main-btn.stop-state {
        background: linear-gradient(135deg, #ff4560, #ff6b81);
        box-shadow: 
            0 6px 14px rgba(0, 0, 0, 0.4),
            0 0 16px rgba(255, 69, 96, 0.6),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    
    .main-btn.stop-state::before {
        background: linear-gradient(135deg, 
            rgba(255, 255, 255, 0.8), 
            #ff4560, 
            #ff6b81, 
            rgba(255, 255, 255, 0.8)
        );
        background-size: 200% 200%;
    }
    
    /* 移动端换一个状态按钮 - 青色创新风 */
    .main-btn.change-state {
        background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
        box-shadow: 
            0 6px 14px rgba(0, 0, 0, 0.4),
            0 0 16px rgba(0, 199, 190, 0.6),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    
    .main-btn.change-state::before {
        background: linear-gradient(135deg, 
            rgba(255, 255, 255, 0.8), 
            var(--accent-color), 
            var(--secondary-color), 
            rgba(255, 255, 255, 0.8)
        );
        background-size: 200% 200%;
    }
    
    /* 减小移动端高亮文本大小 */
    .highlight-text {
        font-size: 2rem;
        letter-spacing: 2px;
        margin: -8px 4px;
    }
}

/* Section Styles */
section {
    padding: 3rem 0;
    opacity: 1;
    transform: translateY(0);
    position: relative;
    overflow: hidden;
    margin-bottom: 5px;
    margin-top: -5px;
}

.hero {
    padding-top: 12rem;
    text-align: center;
    background: var(--bg-secondary);
    position: relative;
}

/* 合并section样式 */
.hero::before,
.about::before,
.portfolio::before,
.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: -1;
}

/* 合并底部边框效果 */
.hero::after,
.about::after,
.portfolio::after,
.contact::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.1);
    z-index: 1;
}

/* 非hero部分共享背景 */
.about,
.portfolio,
.contact {
    background: var(--bg-secondary);
    position: relative;
}

/* Portfolio Styles */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
    position: relative;
}

.portfolio-item {
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--glass-border-light);
    position: relative;
}

/* 发光边框效果 */
.portfolio-item::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius);
    padding: 1px;
    background-color: transparent;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.portfolio-item:hover::after {
    opacity: 1;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 210, 255, 0.2), transparent);
    transition: left 0.6s ease;
    z-index: 0;
}

.portfolio-item:hover::before {
    left: 100%;
}

/* 项目图片与内容容器 */
.portfolio-item-image {
    position: relative;
    overflow: hidden;
    height: 200px;
    border-bottom: 1px solid var(--glass-border-light);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.9) contrast(1.1);
}

.portfolio-item-content {
    padding: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.portfolio-item-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
    font-size: var(--font-size-md);
    transition: color 0.3s ease;
}

.portfolio-item-content h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.portfolio-item:hover .portfolio-item-content h3 {
    color: var(--secondary-color);
}

.portfolio-item:hover .portfolio-item-content h3::after {
    width: 100%;
}

.portfolio-item-content p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    transition: color 0.3s ease;
}

/* 按钮特效增强 */
.btn-small {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    background: var(--glass-bg);
    color: var(--secondary-color);
    border-radius: 2rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.4s ease;
    border: 1px solid var(--glass-border-light);
    position: relative;
    overflow: hidden;
    font-size: 0.9rem;
}

.btn-small::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 210, 255, 0.2), transparent);
    transition: left 0.6s ease;
    z-index: 0;
}

.btn-small:hover::before {
    left: 100%;
}

.btn-small:hover {
    background: var(--secondary-color);
    color: #0a0a1a;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.4);
    border-color: var(--secondary-color);
}

.portfolio-item:hover .portfolio-item-content {
    transform: translateY(-4px);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Contact Styles */
.contact-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 3rem;
    max-width: 100%;
}

.contact-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border-light);
    transition: var(--transition-smooth);
    width: 280px;
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 113, 227, 0.1), transparent);
    transition: left 0.6s ease;
    z-index: 0;
}

.contact-item:hover::before {
    left: 100%;
}

.contact-item:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-soft);
}

/* 使用.contact-icon而非i标签 */
.contact-icon {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Footer Styles */
footer {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--glass-border-light);
}

footer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 核心动画效果 */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.2; }
    100% { transform: scale(1.2); opacity: 0.5; }
}

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

/* Background Particles */
.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
    background: transparent;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(0, 113, 227, 0.3);
    pointer-events: none;
    box-shadow: 0 0 15px rgba(0, 210, 255, 0.6);
    animation: pulse 3s infinite alternate;
}

/* 响应式样式 - 平板和移动设备 */
@media (max-width: 768px) {
  /* 容器位置调整 */
  .hero .container { transform: translateY(-30px); }
  .about .container { transform: translateY(-10px); padding-bottom: 30px; }
  section.about { margin-top: -2rem; }
  
  /* 排版调整 */
  h1 { font-size: var(--font-size-xl); }
  h2 { 
    font-size: var(--font-size-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
  }
  p { font-size: var(--font-size-md); }
  
  /* 食物随机选择器 */
  .food-prompt { font-size: var(--font-size-xl); white-space: normal; overflow: visible; }
  .food-randomizer { gap: var(--spacing-md); margin: var(--spacing-md) auto; }
  .food-result { font-size: var(--font-size-xl); }
  .food-display { width: 90%; padding: var(--spacing-md) var(--spacing-sm); min-height: 140px; }
  .food-controls { gap: var(--spacing-sm); }
  .floating-food { font-size: var(--font-size-xs); }
  
  /* 页面结构 */
  section { padding: var(--spacing-lg) 0; }
  .hero { padding-top: 8rem; }
  
  /* 导航 */
  .header-content {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
  }
  .logo-container { width: 45px; height: 45px; }
  nav { margin-top: var(--spacing-xs); gap: var(--spacing-md); }
  
  /* 联系信息 */
  .contact-info { gap: 1.5rem; }
  .contact-item { width: 100%; max-width: 320px; }
  
  /* 微信环境特殊优化 */
  body { touch-action: pan-y; }
  p.animate-item.animate { margin-bottom: var(--spacing-lg); }
  h1, h2, h3, h4, h5, h6 { font-weight: 600; }
  button:active, a:active { opacity: 0.8; transform: scale(0.98); }
}

@media (max-width: 480px) {
    section.about {
        margin-top: calc(-3rem + var(--spacing-md));
    }
    
    .hero {
        padding-top: 7rem;
    }
    
    .header-content {
        padding: var(--spacing-xs) 0;
        gap: var(--spacing-sm);
    }
    
    .logo-container {
        width: 40px;
        height: 40px;
        flex-shrink: 0;
    }
    
    nav {
        gap: var(--spacing-xs);
        margin-top: 0;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav a {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    h1 {
        font-size: var(--font-size-md);
        margin: 0;
        text-align: left;
        flex: 1;
        white-space: pre-line;
    }
    
    h2 {
        font-size: var(--font-size-md);
        padding: var(--spacing-xs) var(--spacing-md);
        border-radius: 10px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    }
    
    p {
        font-size: var(--font-size-sm);
        margin-top: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
    }
    
    .food-prompt {
        font-size: var(--font-size-xl);
        white-space: normal;
        overflow: visible;
        line-height: 1.4;
        word-wrap: break-word;
    }
    
    .food-randomizer {
        gap: var(--spacing-md);
        margin: var(--spacing-sm) auto;
    }
    
    .food-result {
        font-size: var(--font-size-lg);
    }
    
    .food-display {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-sm);
        min-height: 100px;
    }
    
    .food-controls {
        gap: var(--spacing-sm);
        margin-top: var(--spacing-xs);
    }
    
    .floating-food {
        font-size: var(--font-size-xs);
    }
    
    /* 进一步减小小屏手机上的高亮文本大小 */
    .highlight-text {
        font-size: var(--font-size-xl);
        letter-spacing: 1.5px;
        margin: -6px 2px;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    /* 优化按钮触摸体验 */
    .food-btn, .btn-small {
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 44px;
        min-width: 44px;
        font-size: var(--font-size-sm);
    }
    
    /* 确保图片响应式 */
    img {
        max-width: 100%;
        height: auto;
    }
    
    /* 优化联系方式布局 */
    .contact-item {
        padding: var(--spacing-md);
    }
    
    /* 优化页脚 
    footer {
        padding: var(--spacing-md) 0;
    }
    */
    footer p {
        font-size: var(--font-size-xs);
        text-align: center;
    }
}

/* 微信环境样式已合并到上方的媒体查询中 */

/* 合并平板设备优化到主媒体查询 */
/* 平板设备(481-768px)特定优化 */
@media (min-width: 481px) and (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .contact-info {
        gap: var(--spacing-md);
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .contact-item {
        width: 100%;
        max-width: 320px;
    }
}