/* ==========================================
   No Ego - Main Stylesheet
   ========================================== */

:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-border: #e5e5e5;
    --color-border-light: #f0f0f0;
    --font-serif: 'Libre Baskerville', 'Noto Serif SC', 'Songti SC', Georgia, serif;
    --font-sans: 'Source Sans Pro', 'Noto Sans SC', -apple-system, sans-serif;
}

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

html {
    font-size: 17px;
    scroll-behavior: smooth;
}

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

a {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--color-text-light);
}

/* ========== 整体布局 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 80px;
    padding-top: 80px;
    padding-bottom: 100px;
}

/* ========== 左侧：文章流 ========== */
.main-content {
    min-width: 0;
}

/* 单篇文章 */
.post {
    margin-bottom: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--color-border);
}

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

.post-date {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    letter-spacing: 0.03em;
    margin-bottom: 12px;
}

.post-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 400;
    line-height: 1.4;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.post-title a:hover {
    color: var(--color-text-light);
}

.post-content {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    line-height: 1.95;
    color: var(--color-text);
}

.post-content p {
    margin-bottom: 1.5em;
}

.post-content p:last-child {
    margin-bottom: 0;
}

.post-content strong {
    font-weight: 600;
}

.post-content em {
    font-style: italic;
}

.post-content blockquote {
    margin: 1.8em 0;
    padding-left: 1.5em;
    border-left: 3px solid var(--color-border);
    color: var(--color-text-light);
    font-style: italic;
}

.post-content ul, .post-content ol {
    margin: 1.5em 0;
    padding-left: 1.5em;
}

.post-content li {
    margin-bottom: 0.5em;
}

.post-content h2 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 400;
    margin-top: 2em;
    margin-bottom: 1em;
}

.post-content h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 1.8em;
    margin-bottom: 0.8em;
}

.post-content code {
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 0.9em;
    background: var(--color-border-light);
    padding: 0.2em 0.4em;
    border-radius: 3px;
}

.post-content pre {
    background: #f8f8f8;
    padding: 1.2em;
    overflow-x: auto;
    margin: 1.5em 0;
    border-radius: 4px;
}

.post-content pre code {
    background: none;
    padding: 0;
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 2.5em 0;
}

.post-content img {
    max-width: 100%;
    height: auto;
    margin: 1.5em 0;
}

/* 分页导航 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding-top: 40px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
}

.pagination a, .pagination span {
    padding: 10px 20px;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    transition: all 0.2s;
}

.pagination a:hover {
    color: var(--color-text);
    border-color: var(--color-text);
}

.pagination .disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* 归档页面 */
.archive-page {
    padding-top: 60px;
}

.archive-year {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 25px;
    margin-top: 50px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--color-border);
}

.archive-year:first-child {
    margin-top: 0;
}

.archive-list {
    list-style: none;
}

.archive-item {
    display: flex;
    align-items: baseline;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.archive-item:last-child {
    border-bottom: none;
}

.archive-item-date {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    width: 100px;
    flex-shrink: 0;
}

.archive-item-title {
    font-family: var(--font-serif);
    font-size: 1.05rem;
}

.archive-item-title a:hover {
    color: var(--color-text-light);
}

/* ========== 右侧：固定栏 ========== */
.sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
}

.sidebar-section {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

/* Logo 区 */
.site-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    margin-bottom: 8px;
}

.site-logo a {
    color: var(--color-text);
}

.site-logo a:hover {
    color: var(--color-text);
}

.site-tagline {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    letter-spacing: 0.02em;
    margin-bottom: 5px;
}

.site-tagline-cn {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* 关于区 */
.sidebar-title {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 15px;
}

.about-text {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text-light);
}

.about-text p {
    margin-bottom: 12px;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* 链接区 */
.sidebar-links {
    list-style: none;
}

.sidebar-links li {
    margin-bottom: 10px;
}

.sidebar-links a {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.sidebar-links a:hover {
    color: var(--color-text);
}

/* 归档区 */
.sidebar-archive {
    list-style: none;
}

.sidebar-archive li {
    margin-bottom: 8px;
}

.sidebar-archive a {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.sidebar-archive a:hover {
    color: var(--color-text);
}

.sidebar-archive .count {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    margin-left: 5px;
}

/* ========== 单篇文章页面 ========== */
.post-single {
    max-width: 700px;
}

.post-single .post-title {
    font-size: 2rem;
    margin-bottom: 15px;
}

.post-single .post-date {
    margin-bottom: 40px;
}

.post-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
    font-family: var(--font-sans);
    font-size: 0.9rem;
}

.post-nav a {
    color: var(--color-text-muted);
    max-width: 45%;
}

.post-nav a:hover {
    color: var(--color-text);
}

.post-nav .label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 5px;
}

/* ========== 响应式 ========== */
@media (max-width: 900px) {
    .container {
        padding: 0 25px;
    }

    .layout {
        grid-template-columns: 1fr;
        gap: 0;
        padding-top: 40px;
    }

    .sidebar {
        position: relative;
        top: 0;
        order: -1;
        margin-bottom: 50px;
        padding-bottom: 40px;
        border-bottom: 1px solid var(--color-border);
    }

    .sidebar-section {
        margin-bottom: 25px;
        padding-bottom: 25px;
    }

    .post {
        margin-bottom: 40px;
        padding-bottom: 40px;
    }

    .post-title {
        font-size: 1.4rem;
    }

    .post-content {
        font-size: 1rem;
    }

    .archive-item {
        flex-direction: column;
        gap: 5px;
    }

    .archive-item-date {
        width: auto;
    }
}

@media (max-width: 600px) {
    html {
        font-size: 16px;
    }

    .container {
        padding: 0 20px;
    }

    .layout {
        padding-top: 30px;
    }

    .post-title {
        font-size: 1.25rem;
    }

    .post-single .post-title {
        font-size: 1.5rem;
    }

    .post-nav {
        flex-direction: column;
        gap: 20px;
    }

    .post-nav a {
        max-width: 100%;
    }
}

/* ========== 页面切入动画 ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.post {
    animation: fadeInUp 0.5s ease-out forwards;
    opacity: 0;
}

.post:nth-child(1) { animation-delay: 0.1s; }
.post:nth-child(2) { animation-delay: 0.15s; }
.post:nth-child(3) { animation-delay: 0.2s; }
.post:nth-child(4) { animation-delay: 0.25s; }
.post:nth-child(5) { animation-delay: 0.3s; }
.post:nth-child(6) { animation-delay: 0.35s; }
.post:nth-child(7) { animation-delay: 0.4s; }
.post:nth-child(8) { animation-delay: 0.45s; }
.post:nth-child(9) { animation-delay: 0.5s; }
.post:nth-child(10) { animation-delay: 0.55s; }

.sidebar {
    animation: fadeInUp 0.5s ease-out forwards;
}

.post-single {
    animation: fadeInUp 0.4s ease-out forwards;
}