:root {
    --primary-color: #e0e0e0;
    --accent-color: #a29bfe;
    --text-color: #dcdde1;
    --text-light: #95a5a6;
    --bg-color: #1e1e1e;
    --bg-secondary: #2d2d2d;
    --border-color: #444;
    --code-bg: #282c34;
    
    --font-serif: "Noto Serif SC", "Songti SC", serif;
    --font-display: "Cormorant Garamond", "Noto Serif SC", serif;
    --font-sans: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    
    --container-width: 740px;
    --header-height: 70px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    line-height: 1.75;
    margin: 0;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

.layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* Header */
.site-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 32px;
}

.site-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.5px;
    transition: transform 0.3s ease;
}

.site-title:hover {
    transform: translateY(-1px);
}

.logo-icon {
    width: 32px;
    height: 40px;
    filter: drop-shadow(0 0 8px rgba(162, 155, 254, 0.4));
    transition: filter 0.3s ease;
}

.site-title:hover .logo-icon {
    filter: drop-shadow(0 0 12px rgba(162, 155, 254, 0.6));
}

.logo-text {
    background: linear-gradient(135deg, #e0e0e0 0%, #a29bfe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(162, 155, 254, 0.2);
}

.logo-dot {
    color: var(--accent-color);
    font-size: 2.2rem;
    line-height: 0.5;
    margin-bottom: 8px;
    text-shadow: 0 0 10px rgba(162, 155, 254, 0.5);
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    margin-left: 32px;
    font-size: 0.95rem;
    font-weight: 600;
    position: relative;
    padding: 8px 0;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
    box-shadow: 0 0 8px rgba(162, 155, 254, 0.5);
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link:hover::after {
    width: 100%;
}

/* Main */
.site-main {
    flex: 1;
    /* padding: 60px 0; */
}

/* Typography for Articles */
article h1 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    letter-spacing: -1px;
}

article .meta {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 2.5rem;
    font-family: var(--font-sans);
}

article h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

article h3 {
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

article p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-color);
}

article a {
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

article a:hover {
    border-bottom-color: var(--accent-color);
}

article blockquote {
    border-left: 4px solid var(--accent-color);
    margin: 2rem 0;
    padding: 0.5rem 0 0.5rem 1.5rem;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--text-light);
    background: var(--bg-secondary);
    border-radius: 0 8px 8px 0;
}

/* Code Blocks */
pre {
    background: var(--code-bg);
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.9rem;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    background: rgba(162, 155, 254, 0.1);
    color: #a29bfe;
    padding: 2px 5px;
    border-radius: 4px;
    font-size: 0.9em;
}

pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    margin: 1.5rem 0;
}

/* Post List (Homepage) */
.post-list {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
}

.post-list li {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2rem;
}

.post-list li:last-child {
    border-bottom: none;
}

.post-list a {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    font-family: var(--font-serif);
    transition: color 0.2s;
}

.post-list a:hover {
    color: var(--accent-color);
}

.post-list .date {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    padding: 40px 0;
    margin-top: auto;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --container-width: 100%;
        --header-height: 60px;
    }

    .site-header .container {
        padding: 0 20px;
    }

    .nav-link {
        margin-left: 20px;
        font-size: 0.9rem;
    }
    
    .site-title {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .site-header {
        height: auto;
        padding: 12px 0;
    }

    .site-header .container {
        flex-direction: column;
        gap: 12px;
    }

    nav {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        width: 100%;
    }

    .nav-link {
        margin: 0 12px;
        padding: 4px 0;
    }
}