/* ================================================================
   post.css — Post Detail Page Complete Styles
   ================================================================
   post.html 전용 독립 스타일시트
   lifelog.css 불필요 - 모든 스타일 포함
   ================================================================ */

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --ink:       #1a1714;
    --paper:     #f5f0e8;
    --cream:     #ede8dc;
    --accent:    #8b3a2a;
    --accent2:   #c46a3e;
    --muted:     #7a736a;
    --border:    #d4cdc0;
    --code-bg:   #1e1c1a;
    --code-fg:   #e8e2d8;
    --nav-h:     64px;
    --nav-bg:    rgba(26,23,20,0.97);
    --content-w: 1280px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: var(--paper);
    color: var(--ink);
    min-height: 100vh;
}

/* ─── Navigation ─── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    background: var(--nav-bg);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 48px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    backdrop-filter: blur(12px);
}
.nav-logo {
    font-family: 'EB Garamond', serif;
    font-size: 1.25rem;
    color: #f5f0e8;
    letter-spacing: 0.03em;
    text-decoration: none;
    opacity: 0.9;
}
.nav-logo span { color: var(--accent2); }

/* Nav dropdown */
.nav-logo-wrap { position: relative; }
.nav-logo-wrap .nav-dropdown-menu { left: 0; transform: none; }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle { cursor: pointer; }
.nav-arrow { font-size: 0.6rem; opacity: 0.5; transition: transform 0.2s ease; display: inline-block; }
.nav-dropdown.open .nav-arrow { transform: rotate(180deg); }
.nav-dropdown-menu {
    display: none; position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%);
    background: rgba(26,23,20,0.97); border: 1px solid rgba(255,255,255,0.1); border-radius: 5px;
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    min-width: 200px; padding: 6px 0; list-style: none;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4); z-index: 1001;
}
.nav-dropdown.open .nav-dropdown-menu { display: block; }
.nav-dropdown-menu li a {
    display: flex; align-items: center; gap: 8px; padding: 10px 20px;
    font-size: 0.78rem; font-weight: 500; letter-spacing: 0.06em;
    color: rgba(245,240,232,0.65); text-decoration: none; white-space: nowrap;
    transition: color 0.25s, background 0.25s;
}
.nav-dropdown-menu li a:hover { color: #f5f0e8; background: rgba(255,255,255,0.06); }
.nav-dropdown-menu li a.disabled-link { opacity: 0.35; cursor: not-allowed; pointer-events: none; }

/* Nav-links 내부 dropdown (Labs 등) */
.nav-links li.nav-dropdown { position: relative; }
.nav-links li.nav-dropdown > a.nav-dropdown-toggle {
    display: flex; align-items: center; gap: 6px;
    color: rgba(245,240,232,0.65); text-decoration: none;
    font-size: 0.78rem; font-weight: 500;
    letter-spacing: 0.12em; text-transform: uppercase;
    padding: 8px 18px; border-radius: 4px;
    position: relative; transition: color 0.25s, background 0.25s; cursor: pointer;
}
.nav-links li.nav-dropdown > a.nav-dropdown-toggle::after {
    content: ''; position: absolute; bottom: 0; left: 50%; right: 50%;
    height: 2px; background: var(--accent2); transition: left 0.3s, right 0.3s; border-radius: 1px;
}
.nav-links li.nav-dropdown > a.nav-dropdown-toggle:hover,
.nav-links li.nav-dropdown.open > a.nav-dropdown-toggle { color: #f5f0e8; background: rgba(255,255,255,0.06); }
.nav-links li.nav-dropdown > a.nav-dropdown-toggle:hover::after,
.nav-links li.nav-dropdown.open > a.nav-dropdown-toggle::after { left: 16px; right: 16px; }
.nav-links li.nav-dropdown .nav-dropdown-menu { left: 50%; transform: translateX(-50%); }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links li a {
    display: flex; align-items: center; gap: 6px;
    color: rgba(245,240,232,0.65);
    text-decoration: none;
    font-size: 0.78rem; font-weight: 500;
    letter-spacing: 0.12em; text-transform: uppercase;
    padding: 8px 18px; border-radius: 4px;
    position: relative;
    transition: color 0.25s, background 0.25s;
}
.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%; right: 50%;
    height: 2px;
    background: var(--accent2);
    transition: left 0.3s, right 0.3s;
    border-radius: 1px;
}
.nav-links li a.active::after,
.nav-links li a:hover::after { left: 16px; right: 16px; }
.nav-links li a.active { color: #f5f0e8; }
.nav-links li a:hover { color: #f5f0e8; background: rgba(255,255,255,0.06); }
.nav-icon { font-size: 0.9rem; opacity: 0.6; transition: opacity 0.25s; }
.nav-links li a:hover .nav-icon,
.nav-links li a.active .nav-icon { opacity: 1; }

/* ─── Post Hero ─── */
.post-hero {
    margin-top: var(--nav-h);
    background: var(--ink);
    position: relative;
    overflow: hidden;
    padding: 80px 48px 64px;
}
/* Subtle dot-grid texture */
.post-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(245,240,232,0.04) 1px, transparent 1px);
    background-size: 28px 28px;
}
/* Accent glow */
.post-hero::after {
    content: '';
    position: absolute;
    top: -60px; left: -60px;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(139,58,42,0.22) 0%, transparent 65%);
    pointer-events: none;
}
.post-hero-inner {
    position: relative;
    z-index: 2;
    max-width: var(--content-w);
    margin: 0 auto;
}
.post-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(245,240,232,0.35);
    opacity: 0;
    animation: fadeUp 0.7s 0.1s forwards;
}
.post-breadcrumb a {
    color: rgba(245,240,232,0.35);
    text-decoration: none;
    transition: color 0.2s;
}
.post-breadcrumb a:hover { color: var(--accent2); }
.post-breadcrumb-sep { opacity: 0.4; }
.post-breadcrumb-current { color: var(--accent2); }

.post-tags-hero {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeUp 0.7s 0.2s forwards;
}
.post-tag-pill {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent2);
    background: rgba(196,106,62,0.12);
    border: 1px solid rgba(196,106,62,0.25);
    padding: 3px 10px;
    border-radius: 20px;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}
.post-tag-pill:hover {
    background: rgba(196,106,62,0.25);
    color: #fff;
}

.post-title {
    font-family: 'EB Garamond', serif;
    font-size: clamp(1.9rem, 4.5vw, 3rem);
    font-weight: 500;
    color: var(--paper);
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeUp 0.8s 0.3s forwards;
}

.post-meta-bar {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.7s 0.45s forwards;
}
.post-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: rgba(245,240,232,0.4);
}
.post-meta-item svg { opacity: 0.6; }
.post-meta-divider {
    width: 1px;
    height: 14px;
    background: rgba(245,240,232,0.12);
}
.post-read-time {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--accent2);
    background: rgba(196,106,62,0.1);
    border: 1px solid rgba(196,106,62,0.2);
    padding: 3px 10px;
    border-radius: 3px;
}
.post-meta-spacer {
    flex: 1;
}
.post-edit-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: #c46a5e;
    background: rgba(196,106,94,0.1);
    border: 1px solid rgba(196,106,94,0.2);
    padding: 3px 10px;
    border-radius: 3px;
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s;
}
.post-edit-btn:hover {
    background: rgba(196,106,94,0.2);
    border-color: rgba(196,106,94,0.4);
}
.post-archive-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--accent);
    background: rgba(132,169,140,0.1);
    border: 1px solid rgba(132,169,140,0.2);
    padding: 3px 10px;
    border-radius: 3px;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}
.post-archive-btn:hover {
    background: rgba(132,169,140,0.2);
    border-color: rgba(132,169,140,0.4);
}

/* ─── Reading Progress ─── */
#progress-bar {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    height: 2px;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    z-index: 999;
    transition: width 0.1s linear;
}

/* ─── Post Layout ─── */
.post-layout {
    max-width: var(--content-w);
    margin: 0 auto;
    padding: 0 48px 80px;
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 0 72px;
    align-items: start;
}

/* ─── Article Body ─── */
.post-body {
    padding-top: 60px;
    min-width: 0;
}

.post-body p {
    font-size: 1.02rem;
    line-height: 1.95;
    color: #3d3830;
    font-weight: 300;
    margin-bottom: 1.4em;
}

/* Intro lead */
.post-body > p:first-child {
    font-size: 1.08rem;
    color: var(--muted);
    border-left: 3px solid var(--accent);
    padding-left: 20px;
    margin-left: -23px;
    line-height: 1.85;
}

.post-body h5 {
    font-family: 'EB Garamond', serif;
    font-size: 1.45rem;
    font-weight: 500;
    color: var(--ink);
    margin: 2.4em 0 1em;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 12px;
}
.post-body h5::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 1.2em;
    background: linear-gradient(180deg, var(--accent), var(--accent2));
    border-radius: 2px;
    flex-shrink: 0;
    vertical-align: middle;
    margin-top: -2px;
}

/* Ordered / Unordered list */
.post-body ol {
    margin: 0 0 1.4em 0;
    padding: 0;
    list-style: none;
    counter-reset: post-ol;
}
.post-body ol > li {
    counter-increment: post-ol;
    position: relative;
    padding: 16px 20px 16px 52px;
    margin-bottom: 2px;
    background: var(--cream);
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--ink);
    font-weight: 400;
}
.post-body ol > li::before {
    counter-increment: none;
    content: counter(post-ol);
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 22px;
    background: var(--ink);
    color: var(--accent2);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0;
}

.post-body ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1.4em 0;
}
.post-body ul li {
    position: relative;
    padding: 6px 0 6px 18px;
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--muted);
    font-weight: 300;
}
.post-body ul li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--accent2);
    font-weight: 500;
}
/* Nested list (deletionPolicy options) */
.post-body ul ul {
    margin: 8px 0 4px 8px;
    border-left: 1px solid var(--border);
    padding-left: 16px;
}
.post-body ul ul li { font-size: 0.85rem; }
.post-body ul ul li strong {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--accent2);
    font-weight: 500;
}

/* Step Label (1. 2. 3. bold before code) */
.step-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 1.8em 0 0.6em;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ink);
    letter-spacing: 0.02em;
}
.step-num {
    width: 22px; height: 22px;
    background: var(--accent);
    color: var(--paper);
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 600;
    flex-shrink: 0;
}

/* ─── Code Blocks ─── */
.code-wrap {
    position: relative;
    margin: 0 0 1.6em;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(26,23,20,0.15);
}
.code-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #141210;
    padding: 9px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.code-toolbar-dots {
    display: flex;
    gap: 5px;
}
.code-toolbar-dots span {
    width: 10px; height: 10px;
    border-radius: 50%;
    display: block;
}
.code-toolbar-dots span:nth-child(1) { background: #ff5f57; }
.code-toolbar-dots span:nth-child(2) { background: #febc2e; }
.code-toolbar-dots span:nth-child(3) { background: #28c840; }
.code-toolbar-lang {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(232,226,216,0.3);
}
.code-copy-btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(232,226,216,0.35);
    background: none;
    border: 1px solid rgba(255,255,255,0.08);
    padding: 3px 9px;
    border-radius: 3px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}
.code-copy-btn:hover { color: var(--accent2); border-color: rgba(196,106,62,0.4); }
.code-copy-btn.copied { color: #28c840; border-color: rgba(40,200,64,0.4); }

pre {
    background: var(--code-bg);
    padding: 20px 22px;
    overflow-x: auto;
    margin: 0;
}
pre code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    line-height: 1.75;
    color: var(--code-fg);
    tab-size: 2;
    white-space: pre;
}
pre code.hljs {
    background: transparent;
    padding: 0;
}

/* Inline code */
.post-body p code,
.post-body li code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8em;
    background: rgba(26,23,20,0.07);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 3px;
    color: var(--accent);
    letter-spacing: 0;
}

/* Links inside body */
.post-body a {
    color: var(--accent2);
    text-decoration: none;
    border-bottom: 1px solid rgba(196,106,62,0.3);
    transition: border-color 0.2s;
}
.post-body a:hover { border-color: var(--accent2); }

/* Callout / note box */
.callout {
    position: relative;
    background: rgba(139,58,42,0.05);
    border: 1px solid rgba(139,58,42,0.18);
    border-left: 3px solid var(--accent);
    border-radius: 0 5px 5px 0;
    padding: 16px 20px;
    margin: 1.4em 0;
    font-size: 0.88rem;
    line-height: 1.75;
    color: var(--muted);
    font-weight: 300;
}
.callout strong { color: var(--ink); font-weight: 500; }
.callout a { color: var(--accent2); text-decoration: none; border-bottom: 1px solid rgba(196,106,62,0.3); }

/* ─── Additional Post Body Styles ─── */

/* H1 → h3 (대제목) */
.post-body h3 {
    font-family: 'EB Garamond', serif;
    font-size: 1.7rem;
    font-weight: 500;
    color: var(--ink);
    margin: 2.8em 0 1.2em;
    letter-spacing: -0.01em;
}

/* H3 → h6 (소제목) */
.post-body h6 {
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--ink);
    margin: 2em 0 0.8em;
    letter-spacing: 0;
}

/* Bold / Italic / Strikethrough */
.post-body strong { color: var(--ink); font-weight: 500; }
.post-body em { font-style: italic; }
.post-body del { color: var(--muted); text-decoration: line-through; opacity: 0.7; }

/* Images */
.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 0.8em 0;
}
.post-body .post-image {
    margin: 1.8em 0;
    text-align: center;
}
.post-body .post-image img {
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(26,23,20,0.12);
}
.post-body .post-image figcaption {
    margin-top: 10px;
    font-size: 0.78rem;
    color: var(--muted);
    font-style: italic;
    letter-spacing: 0.02em;
}

/* Tables (GFM) */
.post-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.4em 0;
    font-size: 0.88rem;
}
.post-body th {
    background: var(--cream);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    font-weight: 600;
    text-align: left;
    padding: 10px 14px;
    border-bottom: 2px solid var(--border);
    color: var(--ink);
}
.post-body td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    color: var(--muted);
    font-weight: 300;
    line-height: 1.6;
}
.post-body tr:last-child td { border-bottom: none; }
.post-body tr:hover td { background: rgba(139,58,42,0.03); }

/* Horizontal Rule */
.post-divider {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 2.4em 0;
}

/* Task List (GFM checkbox) */
.post-body .task-list-item {
    list-style: none;
    padding-left: 6px;
}
.post-body .task-list-item input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--accent);
}

/* ─── TOC / Right Sidebar ─── */
.post-sidebar {
    padding-top: 60px;
    position: sticky;
    top: calc(var(--nav-h) + 32px);
}

.toc-card {
    background: var(--cream);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 20px;
}
.toc-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--ink);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(245,240,232,0.55);
}
.toc-header svg { opacity: 0.5; }
.toc-list {
    list-style: none;
    padding: 8px 0;
}
.toc-list li a {
    display: block;
    padding: 6px 16px;
    font-size: 0.8rem;
    color: var(--muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    line-height: 1.4;
}
.toc-list li a:hover,
.toc-list li a.active {
    color: var(--accent2);
    border-left-color: var(--accent2);
    background: rgba(196,106,62,0.05);
}

/* Post info card */
.post-info-card {
    background: var(--cream);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 20px;
}
.post-info-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 7px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.78rem;
}
.post-info-row:last-child { border-bottom: none; }
.post-info-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    width: 60px;
    flex-shrink: 0;
    padding-top: 1px;
}
.post-info-value {
    font-size: 0.78rem;
    color: var(--ink);
    line-height: 1.45;
}
.post-info-tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    color: var(--accent2);
    background: rgba(196,106,62,0.1);
    border: 1px solid rgba(196,106,62,0.2);
    padding: 1px 7px;
    border-radius: 3px;
    margin: 2px 2px 0 0;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}
.post-info-tag:hover {
    background: rgba(196,106,62,0.25);
    color: #fff;
}

/* Share */
.share-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
}
.share-btns {
    display: flex;
    gap: 6px;
}
.share-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 7px 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    background: var(--cream);
    border: 1px solid var(--border);
    border-radius: 4px;
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    cursor: pointer;
}
.share-btn:hover { color: var(--accent2); border-color: var(--accent2); background: var(--paper); }

/* ─── Category Tree ─── */
.cat-tree-card {
    background: var(--cream);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 16px;
}
.cat-tree-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--ink);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(245,240,232,0.5);
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
}
.cat-tree-header:hover { background: #2a2724; }
.cat-tree-header svg { opacity: 0.45; flex-shrink: 0; }
.cat-tree-toggle {
    margin-left: auto;
    font-size: 0.55rem;
    opacity: 0.4;
    transition: transform 0.25s;
}
.cat-tree-card.collapsed .cat-tree-toggle { transform: rotate(-90deg); }
.cat-tree-body {
    padding: 8px 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.25s;
    max-height: 600px;
    opacity: 1;
}
.cat-tree-card.collapsed .cat-tree-body {
    max-height: 0;
    opacity: 0;
}

/* Tree nodes */
.cat-node {}
.cat-node-row {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0;
    position: relative;
}
/* indent guides */
.cat-node-row::before {
    content: '';
    display: block;
    flex-shrink: 0;
}
.cat-node-indent {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}
.cat-indent-line {
    width: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: stretch;
    position: relative;
    flex-shrink: 0;
}
.cat-indent-line::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0; bottom: 0;
    width: 1px;
    background: var(--border);
}
.cat-indent-line.last::before { bottom: 50%; }

.cat-expand-btn {
    width: 18px; height: 18px;
    display: flex; align-items: center; justify-content: center;
    background: none;
    border: 1px solid var(--border);
    border-radius: 3px;
    cursor: pointer;
    flex-shrink: 0;
    color: var(--muted);
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    margin-right: 5px;
}
.cat-expand-btn:hover { border-color: var(--accent2); color: var(--accent2); background: rgba(196,106,62,0.05); }
.cat-expand-btn svg { transition: transform 0.2s; }
.cat-expand-btn.open svg { transform: rotate(90deg); }

.cat-leaf-spacer {
    width: 23px;
    flex-shrink: 0;
}

.cat-link {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px 5px 4px;
    font-size: 0.8rem;
    color: var(--muted);
    text-decoration: none;
    border-radius: 3px;
    transition: color 0.15s, background 0.15s;
    min-width: 0;
    line-height: 1.3;
}
.cat-link:hover { color: var(--ink); background: rgba(26,23,20,0.04); }
.cat-link.active {
    color: var(--accent);
    font-weight: 500;
    background: rgba(139,58,42,0.06);
}
.cat-link.active .cat-link-icon { opacity: 1; color: var(--accent2); }
.cat-link-icon {
    font-size: 0.75rem;
    opacity: 0.45;
    flex-shrink: 0;
}
.cat-link-name { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cat-count {
    flex-shrink: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.04em;
    color: var(--border);
    background: rgba(26,23,20,0.05);
    border: 1px solid var(--border);
    padding: 1px 5px;
    border-radius: 8px;
}
.cat-link.active .cat-count { color: var(--accent2); border-color: rgba(196,106,62,0.3); background: rgba(196,106,62,0.08); }

/* Level-specific left padding base */
.cat-lv1 > .cat-node-row { padding-left: 10px; }
.cat-lv2 > .cat-node-row { padding-left: 10px; }
.cat-lv3 > .cat-node-row { padding-left: 10px; }

/* Children container */
.cat-children {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height 0.28s ease, opacity 0.22s;
}
.cat-children.open {
    max-height: 500px;
    opacity: 1;
}

/* ─── Author Card (bottom) ─── */
.author-section {
    max-width: var(--content-w);
    margin: 0 auto;
    padding: 0 48px 80px;
}

.author-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 36px;
}
.author-divider-line {
    flex: 1;
    height: 1px;
    background: var(--border);
}
.author-divider-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
}

.author-card {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    background: var(--cream);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 28px 28px;
}
.author-avatar {
    width: 68px; height: 68px;
    border-radius: 50%;
    background: var(--ink);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}
.author-avatar svg { opacity: 0.25; }
.author-info { min-width: 0; }
.author-name {
    font-family: 'EB Garamond', serif;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 2px;
}
.author-handle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}
.author-bio {
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--muted);
    font-weight: 300;
    margin-bottom: 14px;
}
.author-links {
    display: flex;
    gap: 8px;
}
.author-link {
    display: flex;
    align-items: center;
    gap: 5px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    text-decoration: none;
    background: var(--paper);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 3px;
    transition: color 0.2s, border-color 0.2s;
}
.author-link:hover { color: var(--accent2); border-color: var(--accent2); }

/* ─── Pagination ─── */
.post-pagination {
    max-width: var(--content-w);
    margin: 0 auto;
    padding: 0 48px 100px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.pag-item {
    padding: 18px 20px;
    background: var(--cream);
    border: 1px solid var(--border);
    border-radius: 6px;
    text-decoration: none;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.pag-item:hover {
    border-color: var(--accent2);
    background: var(--paper);
    box-shadow: 0 4px 16px rgba(26,23,20,0.07);
}
.pag-dir {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}
.pag-title {
    font-family: 'EB Garamond', serif;
    font-size: 1.05rem;
    color: var(--ink);
    line-height: 1.35;
}
.pag-item.next { text-align: right; }
.pag-item.next .pag-dir { justify-content: flex-end; }
.pag-item.empty {
    opacity: 0;
    pointer-events: none;
}

/* ─── Footer ─── */
footer {
    background: var(--ink);
    border-top: 1px solid rgba(255,255,255,0.07);
    padding: 40px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.footer-logo {
    font-family: 'EB Garamond', serif;
    font-size: 1.1rem;
    color: rgba(245,240,232,0.5);
    letter-spacing: 0.04em;
}
footer p {
    font-size: 0.72rem;
    color: rgba(245,240,232,0.25);
    font-weight: 300;
}
footer a { color: rgba(196,106,62,0.7); text-decoration: none; }
footer a:hover { color: var(--accent2); }

/* ─── Keyframes ─── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ─── Responsive ─── */
@media (max-width: 960px) {
    .post-layout {
        grid-template-columns: 1fr;
        padding: 0 32px 60px;
        gap: 0;
    }
    .post-sidebar { position: static; padding-top: 0; }
    .toc-card { display: none; }
    .post-hero { padding: 60px 32px 48px; }
    .author-section, .post-pagination { padding-left: 32px; padding-right: 32px; }
}
@media (max-width: 600px) {
    nav { padding: 0 16px; }
    .nav-links li a { padding: 6px 10px; font-size: 0.7rem; letter-spacing: 0.06em; }
    .nav-icon { display: none; }
    .nav-arrow { font-size: 0.5rem; }
    .nav-dropdown-menu { left: auto; right: 0; transform: none; min-width: 170px; }
    .nav-dropdown-menu li a { padding: 8px 16px; font-size: 0.72rem; }
    .nav-links li.nav-dropdown > a.nav-dropdown-toggle { padding: 6px 10px; font-size: 0.7rem; letter-spacing: 0.06em; }
    .nav-links li.nav-dropdown .nav-dropdown-menu { left: auto; right: 0; transform: none; min-width: 170px; }
    .post-hero { padding: 48px 20px 40px; }
    .post-layout { padding: 0 20px 40px; }
    .author-section, .post-pagination { padding-left: 20px; padding-right: 20px; }
    .author-card { flex-direction: column; }
    .post-pagination { grid-template-columns: 1fr; }
    .post-body > p:first-child { margin-left: 0; }
}

/* ─── Archive Notification Banner ─── */
@keyframes archiveBannerSlideUp {
    from {
        transform: translateY(0);
        opacity: 1;
        max-height: 80px;
        padding-top: 14px;
        padding-bottom: 14px;
    }
    to {
        transform: translateY(-20px);
        opacity: 0;
        max-height: 0;
        padding-top: 0;
        padding-bottom: 0;
    }
}

.archive-notification {
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(90deg, #7a1e0e 0%, #a33020 100%);
    color: #fff5f0;
    padding: 14px 28px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-bottom: 2px solid #5a1008;
    position: sticky;
    top: var(--nav-h);
    z-index: 500;
    overflow: hidden;
    animation: archiveBannerSlideUp 1s ease-in forwards;
    animation-delay: 29s;
}

.archive-notification-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    color: #ffc9b5;
}

.archive-notification-text {
    line-height: 1.4;
}