/* CSS Variables for Theme Support */
:root {
    /* Light Theme (Default) */
    --bg-color: #fff;
    --text-color: #000;
    --text-secondary: #333;
    --text-meta: #555;
    --border-color: #000;
}

[data-theme="dark"] {
    /* Dark Theme */
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-meta: #888;
    --border-color: #666;
}

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

body {
    font-family: 'Times New Roman', 'SimSun', serif;
    font-size: 11pt;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1 {
    font-size: 18pt;
    font-weight: bold;
    text-align: center;
    margin-bottom: 10px;
    letter-spacing: 1px;
    color: var(--text-color);
}

.header-info {
    text-align: center;
    font-size: 10pt;
    margin-bottom: 30px;
    color: var(--text-secondary);
}

.header-info span {
    margin: 0 8px;
}

h2 {
    font-size: 14pt;
    font-weight: bold;
    margin-top: 20px;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 3px;
    color: var(--text-color);
}

.section {
    margin-bottom: 20px;
}

.item {
    margin-bottom: 12px;
}

.item-title {
    font-weight: bold;
    font-size: 11pt;
    margin-bottom: 3px;
    color: var(--text-color);
}

.item-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.item-title a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

.item-meta {
    font-size: 10pt;
    color: var(--text-meta);
    margin-bottom: 5px;
    font-style: italic;
}

.item-content {
    font-size: 10pt;
    margin-left: 15px;
    margin-top: 5px;
    color: var(--text-color);
}

.item-content ul {
    margin-left: 20px;
    margin-top: 5px;
}

.item-content li {
    margin-bottom: 4px;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.skill-category {
    margin-bottom: 15px;
}

.skill-category-title {
    font-weight: bold;
    font-size: 11pt;
    margin-bottom: 5px;
    color: var(--text-color);
}

.skill-list {
    margin-left: 15px;
    color: var(--text-color);
}

.skill-list ul {
    margin-left: 20px;
}

.skill-list li {
    margin-bottom: 3px;
    font-size: 10pt;
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* Top Buttons Container */
.top-buttons {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 1000;
}

/* Blog Button */
.blog-button {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10pt;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    font-family: inherit;
}

.blog-button:hover {
    opacity: 0.8;
    transform: scale(1.05);
}

/* Language Toggle Button */
.lang-toggle {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10pt;
    transition: all 0.3s ease;
}

.lang-toggle:hover {
    opacity: 0.8;
    transform: scale(1.05);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10pt;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    opacity: 0.8;
    transform: scale(1.05);
}

@media print {
    body {
        padding: 20px;
    }
    
    .top-buttons {
        display: none;
    }
}

@media (max-width: 600px) {
    body {
        padding: 20px 15px;
    }
    
    .two-column {
        grid-template-columns: 1fr;
    }
    
    .top-buttons {
        top: 10px;
        right: 10px;
        gap: 8px;
    }
    
    .blog-button,
    .lang-toggle,
    .theme-toggle {
        padding: 6px 10px;
        font-size: 9pt;
    }
}