/* 定義 CSS 變量，用於主題切換 */
:root {
    /* 淺色主題 (預設) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --link-color: #003153; /* 主色 */
    --link-hover-color: #ffffff;
    --link-bg-hover: rgba(0, 49, 83, 0.85);
    --link-active-color: #001f33;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

/* 深色主題變量 */
[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --border-color: #495057;
    --link-color: #4dabf7; /* 深色模式下使用更亮的藍色 */
    --link-hover-color: #121212;
    --link-bg-hover: rgba(77, 171, 247, 0.85);
    --link-active-color: #a5d8ff;
    --glass-bg: rgba(30, 30, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* 基礎重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    flex: 1;
}

/* 毛玻璃效果類 */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

/* 頂部導航欄 */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}
.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}
.logo .dot {
    color: var(--link-color);
}
.nav-links {
    display: flex;
    gap: 2rem;
}
.nav-links a.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.menu-toggle, #themeToggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 0.5rem;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-primary);
}

/* 連結樣式 (使用您提供的樣式) */
a {
    color: var(--link-color);
    text-decoration: none; /* 这行保持，移除默认下划线 */
    position: relative;
    padding: 0.2em 0.4em;
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    font-weight: 500;
}

a:hover {
    color: var(--link-hover-color);
    background: var(--link-bg-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

a:active {
    color: var(--link-active-color);
    transform: translateY(0);
}

/* 首頁樣式 */
.hero {
    text-align: center;
    padding: 5rem 1rem;
}
.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}
.highlight {
    color: var(--link-color);
}
.tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
}
.quote-box {
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem auto 3rem;
    max-width: 800px;
    position: relative;
    overflow: hidden;
}
.quote-slider {
    min-height: 80px;
    position: relative;
}
.quote {
    font-size: 1.5rem;
    font-style: italic;
    color: var(--text-secondary);
    position: absolute;
    width: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}
.quote.active {
    opacity: 1;
    position: relative;
}
.slider-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}
.slider-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: background 0.3s;
}
.slider-dots .dot.active {
    background: var(--link-color);
}
.btn-primary {
    display: inline-block;
    background: var(--link-color);
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}
.btn-primary:hover {
    transform: translateY(-2px);
    background: var(--link-bg-hover);
    color: var(--link-hover-color);
    box-shadow: 0 4px 12px rgba(0, 49, 83, 0.2);
}

/* 文章列表與網格 */
.latest-posts {
    padding: 3rem 0 5rem;
}
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.post-card {
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}
.post-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}
.post-card-content {
    padding: 1.5rem;
}
.post-card h3 {
    margin-bottom: 0.5rem;
}
.post-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}
.post-card .meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

/* 頁尾 */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* 文章詳情頁樣式 */
.article-header {
    padding: 4rem 0 2rem;
}
.article-meta {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 1rem;
}
.article-content {
    max-width: 800px;
    margin: 2rem auto 5rem;
    line-height: 1.8;
    word-wrap: break-word; /* 旧版浏览器兼容 */
    overflow-wrap: break-word; /* 现代标准 */
    word-break: break-word; 
    
    /* 确保容器宽度不超过视口 */
    max-width: 100%;
    box-sizing: border-box;

}
/* Markdown 內容樣式 */
.article-content h1,
.article-content h2,
.article-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}
.article-content p {
    margin-bottom: 1.2rem;
}
.article-content code {
    background: var(--bg-secondary);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}
.article-content pre {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
}
.article-content blockquote {
    border-left: 4px solid var(--link-color);
    padding-left: 1rem;
    margin-left: 0;
    color: var(--text-secondary);
    font-style: italic;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--glass-bg);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }
    .nav-links.active {
        display: flex;
    }
    .menu-toggle, #themeToggle {
        display: block;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .container {
        padding: 0 1rem;
    }
}

/* 移动端优化增强 */
@media (max-width: 480px) {
    /* 针对小屏幕手机的优化 */
    .article-content {
        padding: 0 0.25rem;
        font-size: 0.95rem;
    }
    
    /* 更积极的文本换行策略 */
    .article-content p {
        text-align: justify;
        hyphens: auto;
    }
    
    /* 确保所有内联元素都能正确换行 */
    .article-content span,
    .article-content strong,
    .article-content em {
        display: inline-block;
        max-width: 100%;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .article-content {
        max-width: 100%;
    }
}