/* ═══════════════════════════════════════════════════════════
   CMHMR Blog - Custom Styles
   Dark theme, 3D background, glassmorphism, animations
   ═══════════════════════════════════════════════════════════ */

/* ─── CSS Custom Properties ─────────────────────────────── */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(20, 20, 35, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-muted: #555568;
    --accent: #00d4ff;
    --accent-alt: #7b2ff7;
    --accent-glow: rgba(0, 212, 255, 0.3);
    --gradient-accent: linear-gradient(135deg, #00d4ff, #7b2ff7);
    --gradient-card: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(123, 47, 247, 0.05));
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --sidebar-width: 280px;
    --container-max: 900px;
}

[data-theme="light"] {
    --bg-primary: #f5f5fa;
    --bg-secondary: #e8e8f0;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-glass: rgba(0, 0, 0, 0.04);
    --border-glass: rgba(0, 0, 0, 0.1);
    --text-primary: #1a1a2e;
    --text-secondary: #3a3a52;
    --text-muted: #686880;
    --accent: #0080b0;
    --accent-alt: #5a1fb0;
    --accent-glow: rgba(0, 128, 176, 0.25);
    --gradient-accent: linear-gradient(135deg, #006090, #4a1090);
    --gradient-card: linear-gradient(135deg, rgba(0, 96, 144, 0.05), rgba(74, 16, 144, 0.05));
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 30px rgba(0, 128, 176, 0.15);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--bg-secondary);
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background var(--transition), color var(--transition);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

::selection {
    background: var(--accent);
    color: var(--bg-primary);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--accent-alt); }

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

/* ─── 3D Background Canvas ──────────────────────────────── */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.6;
}

[data-theme="light"] #bg-canvas {
    opacity: 0.8;
}

/* ─── Floating Particles ────────────────────────────────── */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0;
    animation: float-particle linear infinite;
}

@keyframes float-particle {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}

/* ─── Reading Progress Bar ──────────────────────────────── */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-accent);
    z-index: 1000;
    width: 0%;
    transition: width 0.1s linear;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* ─── Sidebar Navigation ────────────────────────────────── */
#sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
    transform: translateX(-100%);
    transition: transform var(--transition);
    overflow-y: auto;
}

#sidebar.open {
    transform: translateX(0);
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

#sidebar.open .nav-overlay {
    opacity: 1;
    pointer-events: auto;
}

.nav-content {
    padding: 2rem 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.nav-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-glass);
    text-align: center;
}

.nav-logo {
    display: block;
    margin: 0 auto 1rem;
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 50%;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.site-tagline {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.nav-links {
    list-style: none;
    flex: 1;
}

.nav-links li {
    margin-bottom: 0.25rem;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.8rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition);
    font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links li.active a {
    background: var(--bg-glass);
    color: var(--accent);
}

.nav-links li.active a {
    border-left: 2px solid var(--accent);
}

.nav-footer {
    display: flex;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-glass);
}

.nav-footer a {
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: color var(--transition);
}
.nav-footer a:hover { color: var(--accent); }

/* ─── Menu Toggle ───────────────────────────────────────── */
.menu-toggle {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 101;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    backdrop-filter: blur(10px);
    transition: all var(--transition);
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition);
    border-radius: 1px;
}

.menu-toggle:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.menu-toggle:hover span { background: var(--bg-primary); }

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── Theme Toggle ──────────────────────────────────────── */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 101;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    transition: all var(--transition);
    font-size: 1.2rem;
}

.theme-toggle:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.theme-toggle:hover .theme-icon {
    filter: brightness(0);
}

/* ─── Back to Top ───────────────────────────────────────── */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 101;
    width: 44px;
    height: 44px;
    background: var(--accent);
    color: var(--bg-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition);
    box-shadow: var(--shadow-glow);
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px var(--accent-glow);
}

/* ─── Main Container ────────────────────────────────────── */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 5rem 1.5rem 3rem;
}

/* ─── Hero Section ──────────────────────────────────────── */
.hero {
    text-align: center;
    padding: 4rem 0 3rem;
    position: relative;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    position: relative;
    display: inline-block;
}

/* Glitch effect */
.glitch {
    position: relative;
    animation: glitch-skew 4s infinite linear alternate-reverse;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    color: var(--accent);
    animation: glitch-before 3s infinite linear alternate-reverse;
    clip-path: polygon(0 0, 100% 0, 100% 35%, 0 35%);
    transform: translate(-2px);
}

.glitch::after {
    color: var(--accent-alt);
    animation: glitch-after 2s infinite linear alternate-reverse;
    clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%);
    transform: translate(2px);
}

@keyframes glitch-before {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-3px, 2px); }
    40% { transform: translate(3px, -1px); }
    60% { transform: translate(-2px, 1px); }
    80% { transform: translate(2px, -2px); }
}

@keyframes glitch-after {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(2px, -1px); }
    40% { transform: translate(-2px, 2px); }
    60% { transform: translate(3px, -2px); }
    80% { transform: translate(-3px, 1px); }
}

@keyframes glitch-skew {
    0%, 100% { transform: skew(0deg); }
    20% { transform: skew(0deg); }
    21% { transform: skew(0.5deg); }
    22% { transform: skew(0deg); }
    60% { transform: skew(0deg); }
    61% { transform: skew(-0.3deg); }
    62% { transform: skew(0deg); }
}

.hero-logo {
    display: block;
    margin: 0 auto 1.5rem;
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 50%;
    box-shadow: var(--shadow-glow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.hero-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 0 50px var(--accent-glow);
}

.hero-tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-glass);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-link {
    color: inherit;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all var(--transition);
}

.stat-link:hover {
    transform: translateY(-2px);
}

.stat-link:hover .stat-num {
    filter: brightness(1.3);
}

.stat-link:hover .stat-label {
    color: var(--accent);
}

.stat-num {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ─── Post Cards Grid ───────────────────────────────────── */
.posts-grid {
    display: grid;
    gap: 1.5rem;
}

.post-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(30px);
}

.post-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity var(--transition);
}

.post-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.post-card:hover .card-glow {
    opacity: 1;
}

.card-content {
    padding: 1.5rem;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.card-categories {
    display: flex;
    gap: 0.5rem;
}

.category-link {
    color: var(--accent);
    font-size: 0.8rem;
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    transition: all var(--transition);
}

.category-link:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.card-title a {
    color: var(--text-primary);
    transition: color var(--transition);
}

.card-title a:hover {
    color: var(--accent);
}

.card-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
}

.card-read-more:hover {
    gap: 0.75rem;
    color: var(--accent-alt);
}

/* ─── Post Page ─────────────────────────────────────────── */
.post {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-card);
}

.post-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-glass);
}

.post-meta-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.post-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.post-content {
    font-size: 1.05rem;
    line-height: 1.8;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.post-content h2 {
    font-size: 1.6rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-glass);
}

.post-content h3 {
    font-size: 1.3rem;
}

.post-content p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
}

.post-content ul,
.post-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.post-content li {
    margin-bottom: 0.4rem;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    color: var(--accent);
}

.post-content pre {
    margin: 1.5rem 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-glass);
}

.post-content .codehilite {
    margin: 0;
    background: #1e1e2e !important;
    border: none !important;
    border-radius: 0 !important;
    overflow-x: auto;
    position: relative;
}

.post-content .codehilite::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 30px;
    background: #2d2d44;
    border-bottom: 1px solid #3d3d5c;
}

.post-content .codehilite::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 12px;
    width: 10px;
    height: 10px;
    background: #ff5f57;
    border-radius: 50%;
    box-shadow: 20px 0 0 #febc2e, 40px 0 0 #28c840;
}

.post-content .codehilite pre {
    padding: 1.5rem 1.5rem 1.5rem;
    margin: 0;
    overflow-x: auto;
}

.post-content .codehilite code {
    background: none !important;
    border: none !important;
    padding: 0 !important;
    font-family: var(--font-mono) !important;
    font-size: 0.85rem !important;
    color: #abb2bf !important;
    line-height: 1.6 !important;
}

.post-content .codehilite .table-wrapper {
    position: relative;
    margin-top: 30px;
}

.post-content blockquote {
    border-left: 3px solid var(--accent);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--bg-glass);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.post-content th,
.post-content td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-glass);
    text-align: left;
}

.post-content th {
    background: var(--bg-glass);
    font-weight: 600;
    color: var(--text-primary);
}

.post-content img {
    margin: 1.5rem 0;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    transition: transform var(--transition);
}

.post-content img:hover {
    transform: scale(1.01);
}

.post-footer {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-glass);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.tag:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-size: 0.95rem;
    transition: all var(--transition);
}

.back-link:hover {
    gap: 0.75rem;
    color: var(--accent-alt);
}

/* ─── Page (tabs) ───────────────────────────────────────── */
.page {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-card);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-glass);
}

.page-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.page-content h2,
.page-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.page-content p {
    margin-bottom: 1.25rem;
}

.page-content ul,
.page-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.page-content li {
    margin-bottom: 0.4rem;
}

/* ─── Timeline (Archives) ───────────────────────────────── */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-accent);
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin: 2rem 0 1rem;
    position: relative;
}

.timeline-year::before {
    content: '';
    position: absolute;
    left: -2.35rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-glow);
}

.timeline ul {
    list-style: none;
    padding-left: 0;
}

.timeline-item {
    margin-bottom: 0.75rem;
    padding-left: 1rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0.6rem;
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
}

.timeline-item a {
    color: var(--text-primary);
    transition: color var(--transition);
}

.timeline-item a:hover {
    color: var(--accent);
}

.timeline-date {
    display: inline-block;
    min-width: 4rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-family: var(--font-mono);
}

/* ─── Categories Grid ───────────────────────────────────── */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.category-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    text-align: center;
    transition: all var(--transition);
}

.category-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.category-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.category-card h3 a {
    color: var(--text-primary);
}

.category-card h3 a:hover {
    color: var(--accent);
}

.cat-count {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ─── Category detail page ─────────────────────────────── */
.category-intro {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.category-posts-list {
    display: grid;
    gap: 1rem;
}

.category-post-item {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.category-post-item:hover {
    border-color: var(--accent);
    transform: translateX(4px);
    box-shadow: var(--shadow-glow);
}

.category-post-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    white-space: nowrap;
    font-family: var(--font-mono);
}

.category-post-title {
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 500;
}

.category-post-title:hover {
    color: var(--accent);
}

/* ─── Tag Cloud ─────────────────────────────────────────── */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 25px;
    color: var(--text-secondary);
    transition: all var(--transition);
    text-decoration: none;
}

.tag-pill:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    transform: scale(1.05);
}

.tag-pill span {
    font-size: 0.8em;
    opacity: 0.7;
}

/* ─── Footer ────────────────────────────────────────────── */
.site-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-glass);
    margin-top: 3rem;
}

/* ─── Animations ────────────────────────────────────────── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ─── Icons (simple SVG-based) ──────────────────────────── */
.icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.7;
}

.icon-home::before { content: '🏠'; }
.icon-archive::before { content: '📦'; }
.icon-stream::before { content: '🗂'; }
.icon-tags::before { content: '📑'; }
.icon-info::before { content: '👤'; }
.icon-link::before { content: '🔗'; }
.icon-chart::before { content: '📊'; }
.icon-github::before { content: '🐙'; }
.icon-twitter::before { content: '🐦'; }

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 260px;
    }

    .container {
        padding: 4rem 1rem 2rem;
    }

    .hero {
        padding: 2rem 0 2rem;
    }

    .hero-stats {
        gap: 1.5rem;
    }

    .stat-num {
        font-size: 1.5rem;
    }

    .post,
    .page {
        padding: 1.5rem;
    }

    .post-content .codehilite::before {
        display: none;
    }

    .post-content .codehilite::after {
        display: none;
    }

    .post-content .codehilite .table-wrapper {
        margin-top: 0;
    }

    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .card-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .post-meta-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* ─── Print ─────────────────────────────────────────────── */
@media print {
    #bg-canvas, #particles, #sidebar, .menu-toggle, .theme-toggle,
    .back-to-top, .progress-bar, .site-footer { display: none !important; }
    body { background: white; color: black; }
    .container { max-width: 100%; padding: 0; }
    .post, .page { border: none; box-shadow: none; padding: 0; }
}

/* ─── Accessibility ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .glitch::before, .glitch::after { display: none; }
}

/* ─── Loading state ─────────────────────────────────────── */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 50vh;
}

.loading::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-glass);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ─── Tooltip ───────────────────────────────────────────── */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    padding: 0.4rem 0.8rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-primary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
}

[data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-8px);
}

/* ─── Search Toggle Button ──────────────────────────────── */
.search-toggle {
    position: fixed;
    top: 1rem;
    right: 4.5rem;
    z-index: 101;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    transition: all var(--transition);
    font-size: 1.1rem;
}

.search-toggle:hover {
    background: var(--accent);
    border-color: var(--accent);
}

/* ─── Search Overlay ────────────────────────────────────── */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 200;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.search-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.search-box {
    width: 90%;
    max-width: 600px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transform: translateY(-20px);
    transition: transform var(--transition);
}

.search-overlay.open .search-box {
    transform: translateY(0);
}

#searchInput {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1.1rem;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition);
}

#searchInput:focus {
    border-color: var(--accent);
}

#searchInput::placeholder {
    color: var(--text-muted);
}

.search-results {
    margin-top: 1rem;
    max-height: 50vh;
    overflow-y: auto;
}

.search-result-item {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
    text-decoration: none;
}

.search-result-item:hover {
    background: var(--bg-glass);
}

.search-result-title {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.25rem;
}

.search-result-item:hover .search-result-title {
    color: var(--accent);
}

.search-result-meta {
    color: var(--text-muted);
    font-size: 0.8rem;
    display: block;
}

.search-result-excerpt {
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: block;
    margin-top: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-no-results {
    color: var(--text-muted);
    text-align: center;
    padding: 1.5rem;
    font-size: 0.95rem;
}

/* ─── Reading Time ──────────────────────────────────────── */
.post-reading-time,
.card-reading-time {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.card-reading-time::before {
    content: '\23F1';
    font-size: 0.9em;
}

.post-reading-time::before {
    content: '\23F1';
    font-size: 0.9em;
}

/* ─── Post TOC (Table of Contents) ──────────────────────── */
.post-toc {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
}

.toc-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.toc-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    border-left: 2px solid var(--border-glass);
}

.toc-nav li {
    margin: 0;
}

.toc-nav a {
    display: block;
    padding: 0.3rem 0 0.3rem 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition);
    border-left: 2px solid transparent;
    margin-left: -2px;
}

.toc-nav a:hover {
    color: var(--accent);
    border-left-color: var(--accent);
}

.toc-nav .toc-h3 a {
    padding-left: 2rem;
    font-size: 0.85rem;
}

/* ─── Related Posts ─────────────────────────────────────── */
.related-posts {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-glass);
}

.related-posts h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.related-card {
    display: block;
    padding: 1rem 1.25rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all var(--transition);
}

.related-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.related-date {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.related-title {
    display: block;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.3;
}

.related-card:hover .related-title {
    color: var(--accent);
}

/* ─── Responsive updates for new components ─────────────── */
@media (max-width: 768px) {
    .search-toggle {
        right: 4.5rem;
    }

    .search-box {
        padding: 1rem;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .post-toc {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .search-toggle {
        right: 4rem;
    }
}

/* ─── Print updates ─────────────────────────────────────── */
@media print {
    .search-toggle, .search-overlay, .post-toc, .related-posts {
        display: none !important;
    }
}