/* CSS变量定义 - 浅色模式 */
:root {
    --color-primary: #2A9D8F;
    --color-primary-hover: #219789;
    --color-text: #333;
    --color-text-secondary: #555;
    --color-text-muted: #7f8c8d;
    --color-text-heading: #2c3e50;
    --color-background: #f5f5fa;
    --color-card-background: #ffffff;
    --color-card-shadow: rgba(0,0,0,0.08);
    --color-card-shadow-hover: rgba(0,0,0,0.12);
    --color-loading-bg: #f3f3f3;
    --color-loading-spinner: #667eea;
    --color-error: #e74c3c;
    --color-overlay: rgba(42, 157, 143, 0.7);
}

/* 深色模式变量 */
[data-theme="dark"] {
    --color-text: #d0d3d6;
    --color-text-secondary: #b0b3b8;
    --color-text-muted: #8a8d91;
    --color-text-heading: #e0e0e0;
    --color-background: #18191a;
    --color-card-background: rgba(36, 37, 38, 0.4);
    --color-card-shadow: rgba(0,0,0,0.3);
    --color-card-shadow-hover: rgba(0,0,0,0.5);
    --color-loading-bg: #3a3b3c;
    --color-loading-spinner: #667eea;
    --color-error: #f56565;
    --color-overlay: rgba(42, 157, 143, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-background);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: var(--color-card-background);
    color: var(--color-text);
    box-shadow: 
        0 4px 12px var(--color-card-shadow),
        0 8px 24px var(--color-card-shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 20px;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 
        0 6px 16px var(--color-card-shadow-hover),
        0 12px 32px var(--color-card-shadow-hover);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-icon {
    transition: transform 0.3s ease;
}

/* 深色模式时的图标旋转效果 */
[data-theme="dark"] .theme-icon {
    transform: rotate(180deg);
}

/* 背景视频 */
.background-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

/* 深色模式时显示背景视频 */
[data-theme="dark"] .background-video {
    opacity: 0.3;
}

/* 深色模式下的产品卡片优化 */
[data-theme="dark"] .product-card {
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .product-card:hover {
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* 深色模式下大卡片图片亮度调整 */
[data-theme="dark"] .large-card .product-image img {
    filter: brightness(0.8);
}



.container {
    max-width: 1180px; /* PC端固定最大宽度 */
    margin: 0 auto;
    padding: 40px 20px;
}

/* 主布局区域 */
.main-layout {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

/* 个人信息区域 */
.profile-section {
    flex: 0 0 180px;
    padding: 0;
    text-align: left;
    background: none;
    border-radius: 0;
    box-shadow: none;
}

@media (min-width: 1180px) {
    .profile-section {
        position: sticky;
        top: 200px;
        align-self: flex-start;
    }
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 0 16px 0;
    overflow: hidden;
    display: block;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: 1.3rem; /* Adjusted font size */
    font-weight: 700; /* Adjusted font weight */
    color: var(--color-text-heading); /* Adjusted color */
    margin-bottom: 8px; /* Adjusted margin */
    text-align: left; /* Left align name */
}

.profile-bio {
    font-size: 0.9rem; /* Adjusted font size */
    color: var(--color-text-secondary); /* Adjusted color */
    line-height: 1.4;
    margin-bottom: 16px; /* Adjusted margin */
    text-align: left; /* Left align bio */
}

.profile-button {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem; /* Adjusted font size */
    transition: all 0.3s ease;
    display: inline-block;
    text-align: left; /* Left align button */
}

.profile-button:hover {
    color: var(--color-primary-hover);
}


/* 产品列表区域 */
.products-section {
    flex: 1;
}

/* 描述卡片 */
.description-card {
    background: url('images/tools.webp') no-repeat center center;
    background-size: cover;
    color: white;
    border-radius: 16px;
    padding: 24px;
    margin: 24px 0;
    box-shadow: 
        0 4px 20px rgba(42, 157, 143, 0.3),
        0 8px 40px rgba(42, 157, 143, 0.15);
    position: relative; /* Needed for overlay */
    overflow: hidden; /* Ensures overlay doesn't spill */
}

.description-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-overlay); /* Dark overlay for readability */
    z-index: 1;
}

.description-card p {
    position: relative; /* Bring text above overlay */
    z-index: 2;
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.6;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}



/* PC端：4列栅格系统 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    auto-rows: 288px;
}

/* 小卡片：1x1 */
.small-card {
    grid-column: span 1;
    grid-row: span 1;
}

/* 大卡片：2x1 */
.large-card {
    grid-column: span 2;
    grid-row: span 1;
}

/* PC端大卡片：横向布局，图片撑满高度 */
.large-card .product-image {
    width: 50%;
    height: 100%;
    padding-bottom: 0;
}

.large-card .product-content {
    flex: 1;
    padding: 24px;
}

/* 产品卡片基础样式 */
.product-card {
    background: var(--color-card-background);
    border-radius: 20px;
    box-shadow: 
        0 4px 20px var(--color-card-shadow),
        0 8px 40px var(--color-card-shadow);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    display: flex;
    /* 重置链接样式 */
    text-decoration: none;
    color: inherit;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 12px 40px var(--color-card-shadow-hover),
        0 20px 80px var(--color-card-shadow-hover);
    /* 确保悬停时链接样式不变 */
    text-decoration: none;
    color: inherit;
}

/* 产品图片 */
.product-image {
    flex: 0 0 auto;
    width: 40%;
    height: 0;
    padding-bottom: 30%; /* 40% * 3/4 = 30% */
    overflow: hidden;
    position: relative;
}

.product-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}



/* 产品内容 */
.product-content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

/* 大卡片特殊样式 */
.large-card .product-name {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--color-text-heading);
    font-weight: 600;
}

.large-card .product-emoji {
    font-size: 2rem;
    margin-bottom: 12px;
    line-height: 1;
}

.large-card .product-description {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* 小卡片特殊样式 */
.small-card .product-content {
    padding: 16px;
}

.small-card .product-emoji {
    font-size: 2rem;
    margin-bottom: 8px;
    line-height: 1;
}

.small-card .product-name {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--color-text-heading);
    font-weight: 600;
}

.small-card .product-description {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}



/* 没有图片的卡片：竖直布局 */
.product-card:not(:has(.product-image)) {
    flex-direction: column;
}

.product-card:not(:has(.product-image)) .product-content {
    height: 100%;
    justify-content: flex-start;
    text-align: left;
}

/* 加载动画 */
.loading {
    text-align: center;
    padding: 60px 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-loading-bg);
    border-top: 4px solid var(--color-loading-spinner);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.loading p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* 错误提示 */
.error {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-error);
}

.error h2 {
    margin-bottom: 10px;
    font-size: 2rem;
}

/* 页脚 */
.footer {
    text-align: center;
    margin-top: 60px;
    padding-top: 40px;
}

.footer p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ======================================
   响应式设计：2个断点，3种情况
   1. PC端（>1180px）：整体固定宽度居中，PC端布局
   2. 中等屏幕（640px-1180px）：整体固定宽度居中，移动端布局
   3. 移动端（<640px）：整体宽度撑满容器，移动端布局
   ====================================== */

/* 中等屏幕和移动端共用的布局样式 */
@media (max-width: 1180px) {
    /* 主布局垂直排列 */
    .main-layout {
        flex-direction: column;
        gap: 13px;
    }
    
    /* 个人信息区域 */
    .profile-section {
        flex: none;
        width: 100%;
        padding: 0; /* Adjusted padding for non-card style */
        margin-bottom: 25px; /* Adjusted margin-bottom for non-PC */
        text-align: center;
    }
    
    .profile-avatar {
        width: 80px; /* Adjusted avatar size to match blog */
        height: 80px;
        margin: 0 auto 12px auto;
    }
    
    .profile-name {
        font-size: 1.1rem; /* Adjusted font size to match blog */
        margin-bottom: 8px; /* Adjusted margin */
        text-align: center;
    }
    
    .profile-bio {
        font-size: 0.8rem; /* Adjusted font size to match blog */
        margin-bottom: 16px; /* Adjusted margin */
        text-align: center;
    }
    
    .profile-button {
        font-size: 0.8rem; /* Adjusted font size to match blog */
        text-align: center;
        display: block;
        width: fit-content;
        margin: 0 auto;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        auto-rows: 230px;
        gap: 15px;
    }
    
    /* 大卡片：2x1，横向布局 */
    .large-card {
        grid-column: span 2;
        grid-row: span 1;
        flex-direction: row;
    }
    
    /* 大卡片图片保持左侧显示 */
    .large-card .product-image {
        width: 50%;
        height: 100%;
        padding-bottom: 0;
    }
    
    /* 小卡片占1列 */
    .small-card {
        grid-column: span 1;
        grid-row: span 1;
    }
    

    
    /* 图片调整 */
    .product-image {
        width: 35%;
        height: 0;
        padding-bottom: 26.25%; /* 35% * 3/4 = 26.25% */
    }
    
    /* 字体大小调整 - 统一大小卡片字号 */
    .large-card .product-emoji,
    .small-card .product-emoji {
        font-size: 1.8rem;
    }
    
    .large-card .product-name,
    .small-card .product-name {
        font-size: 1rem;
        color: var(--color-text-heading);
    }
    
    .large-card .product-description,
    .small-card .product-description {
        font-size: 0.8rem;
        color: var(--color-text-muted);
    }
    
    /* 移动端描述卡片调整 */
    .description-card {
        margin: 16px 0;
        padding: 20px;
    }
    
    .description-card p {
        font-size: 1rem;
    }
    
    /* 移动端页脚间距调整 */
    .footer {
        margin-top: 30px;
    }
}

/* 中等屏幕：固定宽度居中，使用移动端布局 */
@media (min-width: 640px) and (max-width: 1180px) {
    .container {
        max-width: 600px; /* 中等屏幕固定宽度 */
        margin: 0 auto;
        padding: 40px 20px;
    }
}

/* 移动端：撑满容器，使用移动端布局 */
@media (max-width: 640px) {
    .container {
        max-width: none; /* 移动端撑满屏幕 */
        padding: 30px 20px;
    }
}