/* ================================
   CSS Custom Properties (Variables)
   ================================ */
:root {
    /* Backgrounds - Villain Dark Theme */
    --color-bg: #0b0c10;
    --color-bg-rgb: 11, 12, 16;
    --color-bg-secondary: #1f2833;
    --color-bg-tertiary: #2a2f3a;
    --color-text: #d7dde3;
    --color-text-muted: #a4adb6;
    --color-text-bright: #ffffff;

    /* PRIMARY CYAN PALETTE - Villain Theme */
    --color-primary: #66fcf1;
    --color-primary-hover: #45a29e;
    --color-primary-rgb: 102, 252, 241;
    --color-cyan-glow: #66fcf1;

    /* Accent Colors */
    --color-accent: #a371f7;
    --color-accent-secondary: #ff6ec7;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-success: #10b981;

    /* Difficulty Badge Colors */
    --difficulty-easy: #3fb950;
    --difficulty-medium: #ff9500;
    --difficulty-hard: #ff6b6b;
    --difficulty-insane: #a371f7;

    /* Platform Colors */
    --platform-htb: #a371f7;
    --platform-thm: #ff9500;
    --platform-pg: var(--color-primary);

    /* Severity Colors for CVE */
    --severity-low: #3fb950;
    --severity-medium: #ff9500;
    --severity-high: #ff6b6b;
    --severity-critical: #d946ef;

    --color-border: #45a29e;
    --color-border-muted: #2a2f3a;

    /* Terminal Colors */
    --terminal-bg: #0b0c10;
    --terminal-header: #1f2833;
    --terminal-text: #66fcf1;
    --terminal-prompt: #66fcf1;

    /* Typography - Clean, Screen-Optimized */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Consolas', 'Liberation Mono', 'Menlo', monospace;

    /* Typography Scale - Compact & Professional */
    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 0.9375rem;
    /* 15px - body text */
    --text-md: 1rem;
    /* 16px */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.25rem;
    /* 20px */
    --text-2xl: 1.375rem;
    /* 24px */
    --text-3xl: 1.75rem;
    /* 30px */

    /* Line Heights */
    --leading-tight: 1.3;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;

    /* Spacing - Compact */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 3rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --max-width: 1200px;
    --content-width: 800px;
    --toc-width: 280px;
    --header-height: 64px;

    /* UI surfaces */
    --color-header-bg: rgba(var(--color-bg-rgb), 0.92);

    /* Accent + glow tuning */
    --accent-gradient: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.14), rgba(var(--color-primary-rgb), 0) 60%);
    --glow-soft: rgba(var(--color-primary-rgb), 0.18);
    --glow-mid: rgba(var(--color-primary-rgb), 0.26);
    --shadow-card-hover: 0 10px 22px rgba(0, 0, 0, 0.35);
    --chip-padding-y: 0.2rem;
    --chip-padding-x: 0.55rem;
    --chip-font-size: 0.75rem;
}

/* ================================
   Skip Link (Accessibility)
   ================================ */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-primary);
    color: var(--color-bg);
    font-weight: 600;
    border-radius: var(--radius-md);
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-md);
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    font-feature-settings: 'kern' 1, 'liga' 1;
    text-rendering: optimizeLegibility;
}

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

/* ================================
   Layout Containers
   ================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.container--narrow {
    max-width: var(--content-width);
}

.main-content {
    flex: 1;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
    padding-top: calc(var(--header-height) + var(--space-xl));
    padding-bottom: var(--space-3xl);
}

.main-content>section+section {
    margin-top: var(--space-3xl);
    padding-top: var(--space-3xl);
    border-top: 1px solid var(--color-border-muted);
}

/* ================================
   Typography - Compact Heading Scale
   ================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--color-text-bright);
    font-weight: 600;
    line-height: var(--leading-tight);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-lg);
}

h2 {
    font-size: var(--text-2xl);
    margin-top: var(--space-2xl);
}

h3 {
    font-size: var(--text-xl);
    margin-top: var(--space-xl);
}

h4 {
    font-size: var(--text-lg);
    margin-top: var(--space-lg);
}

h5,
h6 {
    font-size: var(--text-md);
    margin-top: var(--space-lg);
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1rem;
}

h6 {
    font-size: 0.875rem;
}

p {
    margin-bottom: var(--space-lg);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

/* Make in-article links look like links (without affecting nav/buttons) */
.post-content a {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
    text-decoration-color: rgba(var(--color-primary-rgb), 0.45);
}

.post-content a:hover {
    text-decoration-color: rgba(var(--color-primary-rgb), 0.9);
}

code,
pre {
    font-family: var(--font-mono);
}

code {
    background: var(--color-bg-secondary);
    padding: 0.15em 0.4em;
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-family: var(--font-mono);
}

pre {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    tab-size: 4;
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    margin-bottom: var(--space-lg);
}

pre code {
    background: none;
    padding: 0;
    font-size: 0.875rem;
}

blockquote {
    border-left: 3px solid var(--color-primary);
    padding-left: var(--space-lg);
    margin: var(--space-lg) 0;
    color: var(--color-text-muted);
    font-style: italic;
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
}

/* ================================
   Header & Navigation
   ================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    z-index: 1000;
}

.nav-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--space-xl) 0 var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    display: flex;
    align-items: center;
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-text-bright), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-fast);
}

.site-logo:hover {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-cursor {
    color: var(--color-primary);
    animation: blink 1s step-end infinite;
}

.logo-handle {
    color: var(--color-primary);
    font-weight: 600;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    min-height: 44px;
    color: var(--color-text-muted);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text-bright);
    background: var(--color-bg-tertiary);
}

.nav-link.active {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
}

.nav-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl);
        transition: right var(--transition-normal);
        border-left: 1px solid var(--color-border);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle[aria-expanded="true"] .hamburger {
        background: transparent;
    }

    .nav-toggle[aria-expanded="true"] .hamburger::before {
        top: 0;
        transform: rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] .hamburger::after {
        bottom: 0;
        transform: rotate(-45deg);
    }
}

/* ================================
   Hero Section
   ================================ */
.hero {
    min-height: calc(80vh - var(--header-height));
    display: flex;
    align-items: center;
    padding: var(--space-2xl) 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    width: 100%;
}

.hero-greeting {
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    line-height: var(--leading-tight);
}

.hero-tagline {
    font-size: var(--text-xl);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    line-height: var(--leading-normal);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Buttons - Modern Elegant Style */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    min-height: 44px;
    min-width: 44px;
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--glow-mid);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

/* Focus states for keyboard navigation */
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-primary:focus-visible {
    outline-color: var(--color-accent);
}

/* Coffee Button - Innovative Cyber Style */
.btn-coffee {
    background: linear-gradient(135deg, #FFDD00 0%, #FFA500 100%);
    color: #000000;
    border-color: #FFDD00;
    font-weight: 700;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(255, 221, 0, 0.3);
}

.btn-coffee::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.btn-coffee:hover::before {
    left: 100%;
}

.btn-coffee:hover {
    background: linear-gradient(135deg, #FFE44D 0%, #FFB84D 100%);
    border-color: #FFE44D;
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 6px 20px rgba(255, 221, 0, 0.5),
        0 0 30px rgba(255, 221, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-coffee:active {
    transform: translateY(-1px) scale(1.01);
}

.coffee-cup {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.coffee-cup svg {
    stroke: #000;
}

.coffee-cup svg {
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Animated Steam Effect */
.coffee-steam {
    position: absolute;
    top: -8px;
    right: 30%;
    width: 3px;
    height: 15px;
    background: linear-gradient(to top, rgba(255, 255, 255, 0.6), transparent);
    border-radius: 50%;
    opacity: 0;
    animation: steam 2s infinite;
}

.coffee-steam::before,
.coffee-steam::after {
    content: '';
    position: absolute;
    width: 3px;
    height: 15px;
    background: linear-gradient(to top, rgba(255, 255, 255, 0.5), transparent);
    border-radius: 50%;
}

.coffee-steam::before {
    left: -5px;
    animation: steam 2s infinite 0.3s;
}

.coffee-steam::after {
    right: -5px;
    animation: steam 2s infinite 0.6s;
}

.btn-coffee:hover .coffee-steam,
.btn-coffee:hover .coffee-steam::before,
.btn-coffee:hover .coffee-steam::after {
    opacity: 1;
}

@keyframes steam {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0.6;
    }

    50% {
        transform: translateY(-8px) translateX(2px);
        opacity: 0.3;
    }

    100% {
        transform: translateY(-15px) translateX(-2px);
        opacity: 0;
    }
}

.btn-coffee:focus-visible {
    outline: 3px solid #FFDD00;
    outline-offset: 3px;
}


/* Terminal Demo - Clean & Modern */
.terminal-demo {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.terminal-header {
    background: var(--color-bg-tertiary);
    padding: var(--space-sm) var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red {
    background: #ff5f56;
}

.terminal-dot.yellow {
    background: #ffbd2e;
}

.terminal-dot.green {
    background: #27c93f;
}

.terminal-title {
    margin-left: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.terminal-body {
    padding: var(--space-lg);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.8;
    position: relative;
    z-index: 2;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.prompt {
    color: var(--terminal-prompt);
}

.command {
    color: var(--color-text-bright);
}

.terminal-output {
    color: var(--terminal-text);
    margin-bottom: var(--space-md);
    line-height: 1.6;
    text-align: left;
    white-space: pre-wrap;
}

.terminal-output p {
    margin: 0 0 var(--space-md) 0;
}

.terminal-output p:last-child {
    margin-bottom: 0;
}

.cursor {
    color: var(--color-accent);
    animation: blink 1s step-end infinite;
}


@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .terminal-demo {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 640px) {
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ================================
   Home Sections
   ================================ */
.home-sections {
    padding: var(--space-3xl) 0;
}

.home-section {
    margin-bottom: var(--space-3xl);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-muted);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    margin: 0;
}

.section-icon {
    font-size: 1.25rem;
}

.section-link {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

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

/* Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
}

/* ================================
   Post Card - Clean & Elegant
   ================================ */
.post-card {
    position: relative;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.post-card-media {
    width: 100%;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border-muted);
}

.post-card-media img {
    display: block;
    width: 100%;
    height: 180px;
    object-fit: cover;
    object-position: center;
}

/* Cyan glow border on hover */
.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, transparent, var(--color-cyan-glow), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.post-card:hover {
    transform: translateY(-6px);
    box-shadow:
        var(--shadow-card-hover),
        0 0 16px var(--glow-soft);
    border-color: var(--color-primary);
}

.post-card:hover::before {
    opacity: 0.6;
}

.post-card-link {
    display: block;
    color: inherit;
}

.post-card-link:hover {
    color: inherit;
}

.post-card-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.post-card-content {
    padding: var(--space-lg);
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.reading-time::before {
    content: '·';
    margin-right: var(--space-md);
}

.post-card-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-text-bright);
    transition: color var(--transition-fast);
    line-height: var(--leading-tight);
}

.post-card:hover .post-card-title {
    color: var(--color-primary);
    text-shadow: 0 0 6px var(--glow-soft);
}

.post-card-excerpt {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
    line-height: var(--leading-normal);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    display: inline-block;
    padding: var(--chip-padding-y) var(--chip-padding-x);
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    font-size: var(--chip-font-size);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--color-primary);
    color: white;
}

/* ================================
   List Page
   ================================ */
.list-page {
    max-width: var(--content-width);
    margin: 0 auto;
}

.list-header {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border-muted);
}

.list-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-sm);
    line-height: var(--leading-tight);
}

.list-description {
    color: var(--color-text-muted);
    font-size: 1.125rem;
}

.posts-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

/* Work-in-progress banner */
.wip-banner {
    background: linear-gradient(180deg, rgba(var(--color-primary-rgb), 0.08), rgba(0, 0, 0, 0));
    border: 1px solid rgba(var(--color-primary-rgb), 0.22);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.wip-top {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.wip-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    background: rgba(var(--color-primary-rgb), 0.14);
    border: 1px solid rgba(var(--color-primary-rgb), 0.35);
    color: var(--color-text);
    font-size: 0.8rem;
}

.wip-title {
    font-weight: 600;
}

.wip-text {
    color: var(--color-text-muted);
    margin: 0 0 var(--space-md);
    max-width: 75ch;
}


.wip-actions {
    margin-top: var(--space-md);
}

.wip-link {
    color: var(--color-primary);
    font-weight: 500;
}

.wip-link:hover {
    text-decoration: underline;
}

/* Filters (Notes + Writeups) */
.filter-bar {
    display: grid;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.filter-search-wrap {
    display: flex;
}

.filter-search {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-muted);
    background: var(--color-bg-secondary);
    color: var(--color-text);
    outline: none;
}

.filter-search:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.filter-chip {
    padding: var(--chip-padding-y) var(--chip-padding-x);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-muted);
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    font-size: var(--chip-font-size);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

.filter-chip.is-active {
    background: rgba(var(--color-primary-rgb), 0.12);
    border-color: rgba(var(--color-primary-rgb), 0.55);
    color: var(--color-text);
}

.filter-chip:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Notes hierarchy UI */
.section-groups {
    display: grid;
    gap: var(--space-md);
}

.section-group {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.section-group summary {
    list-style: none;
    cursor: pointer;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    user-select: none;
}

.section-group summary::-webkit-details-marker {
    display: none;
}

.section-group-title {
    font-weight: 600;
}

.section-group-count {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-full);
    padding: 2px 10px;
}

.section-group-body {
    padding: 0 var(--space-lg) var(--space-lg);
}

.section-group-description {
    color: var(--color-text-muted);
    margin: 0 0 var(--space-md);
}

.tree-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.tree-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-decoration: none;
    transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.tree-item:hover {
    transform: translateY(-1px);
    border-color: rgba(var(--color-primary-rgb), 0.35);
    background: rgba(var(--color-primary-rgb), 0.06);
}

.tree-item:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.tree-item-title {
    font-weight: 500;
}

.tree-item-tags {
    display: inline-flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    justify-content: flex-end;
}

.no-posts {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--space-3xl);
}

/* ================================
   Breadcrumbs (Windows File Explorer Style)
   ================================ */
.breadcrumbs {
    margin-bottom: var(--space-lg);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

.breadcrumb-item a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: var(--color-primary);
}

.breadcrumb-separator {
    color: var(--color-text-muted);
    margin: 0 var(--space-xs);
}

.breadcrumb-current {
    color: var(--color-text);
}

/* ================================
   Single Post
   ================================ */
/* Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    z-index: 1001;
    transition: width 0.1s ease;
}

/* Single Post with Sidebar Layout (TOC on Extreme Right) */
.single-post-wrapper {
    display: grid;
    grid-template-columns: minmax(0, var(--content-width)) var(--toc-width);
    gap: var(--space-3xl);
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0;
    align-items: start;
}

/* Research: keep article visually centered, TOC on right */
.section-research .single-post-wrapper {
    grid-template-columns: 1fr var(--toc-width);
}

.section-research .single-post {
    justify-self: center;
}

.toc-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-md));
    max-height: calc(100vh - var(--header-height) - var(--space-xl));
    overflow-y: auto;
    padding-left: 0;
    padding-right: 0;
    margin-right: 0;
    justify-self: end;
}

/* Hide placeholder */
.toc-placeholder {
    display: none;
}

.single-post {
    width: 100%;
    max-width: var(--content-width);
    min-width: 0;
}

.post-header {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border-muted);
}

.post-banner {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    margin-bottom: var(--space-xl);
}

.post-banner img {
    display: block;
    width: 100%;
    height: clamp(180px, 28vw, 320px);
    object-fit: cover;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
}

.separator {
    color: var(--color-border);
}

.post-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-md);
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
    max-width: 75ch;
}

.post-description {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    line-height: var(--leading-normal);
    max-width: 75ch;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

/* Table of Contents Sidebar - Compact */
.table-of-contents {
    position: relative;
    background: rgba(31, 40, 51, 0.9);
    border: 1px solid var(--color-border-muted);
    border-left: 2px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-md) var(--space-md);
    margin-right: 0;
}

.table-of-contents h2 {
    font-size: 0.6875rem;
    margin-top: 0;
    margin-bottom: var(--space-xs);
    color: var(--color-text-bright);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table-of-contents ul {
    list-style: none;
    padding-left: 0;
}

.table-of-contents>nav>ul {
    padding-left: 0;
}

.table-of-contents ul ul {
    padding-left: var(--space-sm);
    margin-top: 2px;
}

.table-of-contents li {
    margin-bottom: 2px;
}

.table-of-contents a {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    line-height: 1.45;
    padding: 0.25rem var(--space-xs);
    transition: all var(--transition-fast);
    border-left: 2px solid transparent;
    margin-left: calc(-1 * var(--space-xs));
    border-radius: var(--radius-sm);
}

.table-of-contents a.is-active {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.12);
    border-left-color: var(--color-primary);
    font-weight: 600;
}

.table-of-contents a:hover {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
    border-left-color: var(--color-primary);
}

.table-of-contents a:focus-visible {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
    border-left-color: var(--color-primary);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Scrollbar for TOC */
.toc-sidebar::-webkit-scrollbar {
    width: 4px;
}

.toc-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.toc-sidebar::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

.toc-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Post Content - Dense & Professional */
.post-content {
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    max-width: 75ch;
}

.post-content p {
    margin-bottom: var(--space-lg);
    max-width: 75ch;
}

.post-content h2 {
    font-size: var(--text-2xl);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-muted);
}

.post-content h3 {
    font-size: var(--text-xl);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
}

.post-content h4 {
    font-size: var(--text-lg);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--space-lg) 0;
}

.post-content figure {
    margin: var(--space-xl) 0;
}

.post-content figcaption {
    margin-top: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    text-align: center;
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
    line-height: var(--leading-relaxed);
}

.post-content li {
    margin-bottom: var(--space-sm);
}

.post-content li>p {
    margin-bottom: var(--space-sm);
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-lg) 0;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.post-content th,
.post-content td {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    text-align: left;
}

.post-content th {
    background: var(--color-bg-secondary);
    color: var(--color-text-bright);
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--color-border-muted);
    margin: var(--space-2xl) 0;
}

.post-content strong {
    color: var(--color-text-bright);
}

/* Post Footer */
.post-footer {
    margin-top: var(--space-3xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border-muted);
}

.post-series {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.post-series h3 {
    font-size: 1rem;
    margin-bottom: var(--space-md);
    color: var(--color-text-muted);
}

.post-series ul {
    list-style: none;
}

.post-series li {
    margin-bottom: var(--space-xs);
}

.post-series li.current {
    color: var(--color-primary);
    font-weight: 500;
}

.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.prev-post,
.next-post {
    display: block;
    padding: var(--space-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.prev-post:hover,
.next-post:hover {
    border-color: var(--color-border);
    color: var(--color-text-bright);
}

.next-post {
    text-align: right;
}

.nav-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.nav-title {
    font-weight: 500;
    color: var(--color-text);
}

/* ================================
   About Page
   ================================ */
.about-page {
    max-width: var(--content-width);
    margin: 0 auto;
}

.about-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border-muted);
}

.about-avatar {
    margin-bottom: var(--space-lg);
}

.about-avatar-img {
    display: inline-block;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
}

.avatar-placeholder {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
}

.about-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.about-tagline {
    font-size: 1.25rem;
    color: var(--color-text-muted);
}

.about-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
}

.about-content h2 {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.about-content ul {
    list-style: none;
    padding: 0;
}

.about-content li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.about-content li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* About Contact & Support - 2 Column Grid */
.about-contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

.contact-card,
.support-card {
    padding: var(--space-2xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
}

.contact-card h2,
.support-card h2 {
    margin-bottom: var(--space-lg);
    color: var(--color-text-bright);
    font-size: var(--text-xl);
}

.contact-intro,
.support-intro {
    margin-bottom: var(--space-xl);
    color: var(--color-text-muted);
    line-height: var(--leading-normal);
    font-size: var(--text-base);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.contact-link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
    transform: translateX(4px);
}

.contact-link svg {
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.contact-link:hover svg {
    transform: scale(1.1);
}

.contact-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Support Card - Buy Me Coffee Button */
.btn-coffee-large {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-2xl);
    background: linear-gradient(135deg, #FFDD00, #FDB827);
    color: #000;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-md);
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px rgba(255, 221, 0, 0.3);
    width: 100%;
    justify-content: center;
}

.btn-coffee-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 221, 0, 0.4);
    background: linear-gradient(135deg, #FDB827, #FFDD00);
}

.btn-coffee-large .coffee-cup {
    display: flex;
    align-items: center;
}

.btn-coffee-large svg {
    stroke: #000;
}

@media (max-width: 768px) {
    .about-contact-grid {
        grid-template-columns: 1fr;
    }
}

/* About page - Security Platforms (Compact) */
.security-platforms-compact {
    text-align: center;
    margin: var(--space-xl) 0 var(--space-2xl);
    padding: var(--space-lg);
}

.platforms-label {
    font-size: var(--text-sm);
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
    font-weight: 500;
}

.platforms-badges {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-full);
    color: var(--color-text);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: var(--text-base);
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.platform-badge:hover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.2);
}

.platform-badge-icon,
.platform-badge-img {
    color: var(--color-primary);
    flex-shrink: 0;
}

.platform-badge-img {
    display: block;
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.platform-badge-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.platform-badge-name {
    color: var(--color-text-bright);
}

.platform-badge-meta {
    font-size: 0.75em;
    color: var(--color-text-muted);
    margin-top: 2px;
}

@media (max-width: 768px) {
    .platforms-badges {
        flex-direction: column;
        align-items: stretch;
    }

    .platform-badge {
        justify-content: center;
    }
}

/* ================================
   Back to Top Button
   ================================ */
.back-to-top {
    position: fixed;
    bottom: var(--space-2xl);
    right: var(--space-2xl);
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-bg);
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary-hover);
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(var(--color-primary-rgb), 0.4);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: var(--space-lg);
        right: var(--space-lg);
        width: 44px;
        height: 44px;
    }
}

/* ================================
   Related Posts
   ================================ */
.related-posts {
    margin: var(--space-3xl) 0;
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--color-border-muted);
}

.related-posts-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-xl);
    margin-bottom: var(--space-xl);
    color: var(--color-text-bright);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.related-post-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.related-post-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.related-post-link {
    display: block;
    color: inherit;
    text-decoration: none;
}

.related-post-media {
    width: 100%;
    background: var(--color-bg-tertiary);
}

.related-post-media img {
    display: block;
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.related-post-content {
    padding: var(--space-lg);
}

.related-post-section {
    display: inline-block;
    font-size: var(--text-xs);
    color: var(--color-primary);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.related-post-title {
    font-size: var(--text-md);
    margin-bottom: var(--space-sm);
    color: var(--color-text-bright);
    line-height: var(--leading-tight);
}

.related-post-excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
    line-height: var(--leading-normal);
}

.related-post-meta {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
}

/* ================================
   Social Share Buttons
   ================================ */
.share-section {
    margin: var(--space-2xl) 0;
    padding: var(--space-xl);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-muted);
}

.share-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.share-icon {
    font-size: var(--text-lg);
}

.share-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.share-twitter:hover {
    background: #1da1f2;
    border-color: #1da1f2;
    color: white;
}

.share-linkedin:hover {
    background: #0077b5;
    border-color: #0077b5;
    color: white;
}

.share-reddit:hover {
    background: #ff4500;
    border-color: #ff4500;
    color: white;
}

.share-copy:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
}

.share-btn svg {
    flex-shrink: 0;
}

@media (max-width: 640px) {
    .share-buttons {
        flex-direction: column;
    }

    .share-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ================================
   Breadcrumbs
   ================================ */
.breadcrumbs {
    padding: var(--space-md) 0;
    margin-bottom: var(--space-lg);
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '›';
    margin-left: var(--space-sm);
    color: var(--color-border);
}

.breadcrumb-item a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: var(--color-primary);
}

.breadcrumb-active {
    color: var(--color-text);
    font-weight: 500;
}

/* ================================
   Footer
   ================================ */
.site-footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border-muted);
    padding: var(--space-xl) var(--space-xl);
    margin-top: auto;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    text-align: center;
}

.footer-content p {
    max-width: none;
}

.footer-message {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-bg);
    transform: translateY(-2px);
}

.social-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Coffee icon special styling - golden gradient */
.social-link-coffee {
    background: linear-gradient(135deg, #FFDD00, #FFA500) !important;
}

.social-link-coffee svg {
    stroke: #000;
}

.social-link-coffee:hover {
    background: linear-gradient(135deg, #FFE44D, #FFB84D) !important;
    box-shadow: 0 4px 12px rgba(255, 221, 0, 0.4);
}

.social-link-coffee:focus-visible {
    outline: 2px solid #FFDD00;
    outline-offset: 2px;
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    margin-bottom: var(--space-xs);
}

.footer-powered {
    color: var(--color-text-muted);
    font-size: 0.6875rem;
}

.footer-powered a {
    color: var(--color-text-muted);
}

.footer-powered a:hover {
    color: var(--color-primary);
}

/* ================================
   Animations
   ================================ */
.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}

.animate-fade-in-delay {
    opacity: 0;
    animation: fadeIn 0.6s ease 0.3s forwards;
}

.animate-fade-in-delay-2 {
    opacity: 0;
    animation: fadeIn 0.6s ease 0.6s forwards;
}

.animate-slide-up {
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.6s ease forwards;
}

.animate-slide-up-delay {
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.6s ease 0.2s forwards;
}

.animate-scale-in {
    opacity: 0;
    transform: scale(0.95);
    animation: scaleIn 0.6s ease 0.4s forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);

        .tag--muted {
            border: 1px dashed var(--color-border-muted);
            color: var(--color-text-muted);
        }
    }
}

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ================================
   Syntax Highlighting (Monokai)
   ================================ */
.highlight {
    margin-bottom: var(--space-lg);
}

.highlight pre {
    margin: 0;
}

/* Code block copy button */
.code-block-wrapper {
    position: relative;
}

.copy-code-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast), background var(--transition-fast);
}

.code-block-wrapper:hover .copy-code-btn {
    opacity: 1;
}

.copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.copy-code-btn:focus-visible {
    opacity: 1;
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Monokai colors */
.chroma {
    background-color: var(--color-bg-secondary);
}

.chroma .lnt {
    color: var(--color-text-muted);
}

.chroma .hl {
    background-color: var(--color-bg-tertiary);
}

.chroma .c {
    color: #75715e;
    font-style: italic;
}

.chroma .err {
    color: #960050;
    background-color: #1e0010;
}

.chroma .k {
    color: #66d9ef;
}

.chroma .l {
    color: #ae81ff;
}

.chroma .n {
    color: #f8f8f2;
}

.chroma .o {
    color: #f92672;
}

.chroma .p {
    color: #f8f8f2;
}

.chroma .ch {
    color: #75715e;
    font-style: italic;
}

.chroma .cm {
    color: #75715e;
    font-style: italic;
}

.chroma .cp {
    color: #75715e;
    font-style: italic;
}

.chroma .cpf {
    color: #75715e;
    font-style: italic;
}

.chroma .c1 {
    color: #75715e;
    font-style: italic;
}

.chroma .cs {
    color: #75715e;
    font-style: italic;
}

.chroma .gd {
    color: #f92672;
}

.chroma .ge {
    font-style: italic;
}

.chroma .gi {
    color: #a6e22e;
}

.chroma .gs {
    font-weight: bold;
}

.chroma .gu {
    color: #75715e;
}

.chroma .kc {
    color: #66d9ef;
}

.chroma .kd {
    color: #66d9ef;
}

.chroma .kn {
    color: #f92672;
}

.chroma .kp {
    color: #66d9ef;
}

.chroma .kr {
    color: #66d9ef;
}

.chroma .kt {
    color: #66d9ef;
}

.chroma .ld {
    color: #e6db74;
}

.chroma .m {
    color: #ae81ff;
}

.chroma .s {
    color: #e6db74;
}

.chroma .na {
    color: #a6e22e;
}

.chroma .nb {
    color: #f8f8f2;
}

.chroma .nc {
    color: #a6e22e;
}

.chroma .no {
    color: #66d9ef;
}

.chroma .nd {
    color: #a6e22e;
}

.chroma .ni {
    color: #f8f8f2;
}

.chroma .ne {
    color: #a6e22e;
}

.chroma .nf {
    color: #a6e22e;
}

.chroma .nl {
    color: #f8f8f2;
}

.chroma .nn {
    color: #f8f8f2;
}

.chroma .nx {
    color: #a6e22e;
}

.chroma .py {
    color: #f8f8f2;
}

.chroma .nt {
    color: #f92672;
}

.chroma .nv {
    color: #f8f8f2;
}

.chroma .ow {
    color: #f92672;
}

.chroma .w {
    color: #f8f8f2;
}

.chroma .mb {
    color: #ae81ff;
}

.chroma .mf {
    color: #ae81ff;
}

.chroma .mh {
    color: #ae81ff;
}

.chroma .mi {
    color: #ae81ff;
}

.chroma .mo {
    color: #ae81ff;
}

.chroma .sa {
    color: #e6db74;
}

.chroma .sb {
    color: #e6db74;
}

.chroma .sc {
    color: #e6db74;
}

.chroma .dl {
    color: #e6db74;
}

.chroma .sd {
    color: #e6db74;
}

.chroma .s2 {
    color: #e6db74;
}

.chroma .se {
    color: #ae81ff;
}

.chroma .sh {
    color: #e6db74;
}

.chroma .si {
    color: #e6db74;
}

.chroma .sx {
    color: #e6db74;
}

.chroma .sr {
    color: #e6db74;
}

.chroma .s1 {
    color: #e6db74;
}

.chroma .ss {
    color: #e6db74;
}

.chroma .bp {
    color: #f8f8f2;
}

.chroma .fm {
    color: #a6e22e;
}

.chroma .vc {
    color: #f8f8f2;
}

.chroma .vg {
    color: #f8f8f2;
}

.chroma .vi {
    color: #f8f8f2;
}

.chroma .vm {
    color: #f8f8f2;
}

.chroma .il {
    color: #ae81ff;
}

/* ================================
   Pagination
   ================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border-muted);
}

.pagination .page-item {
    list-style: none;
}

.pagination .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-sm);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.pagination .page-link:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border);
    color: var(--color-text-bright);
}

.pagination .page-item.active .page-link {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
}

.pagination .page-item.disabled .page-link {
    opacity: 0.5;
    pointer-events: none;
}

/* ================================
   Responsive
   ================================ */

@media (max-width: 1200px) {
    .single-post-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        max-width: var(--content-width);
        margin: 0 auto;
    }

    .toc-sidebar {
        position: static;
        max-height: none;
        justify-self: stretch;
    }

    .table-of-contents {
        max-width: 100%;
        margin: 0 0 var(--space-xl) 0;
        border-left-width: 2px;
    }
}

/* Tablet breakpoint */
@media (max-width: 1024px) {
    .hero-content {
        gap: var(--space-2xl);
    }

    .hero-title {
        font-size: 2.75rem;
    }

    .hero-tagline {
        font-size: 1.25rem;
    }

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

    .posts-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }

    /* Single-post TOC layout collapses at 1200px */
}

/* Mobile breakpoint */
@media (max-width: 768px) {
    .main-content {
        padding: var(--space-lg);
        padding-top: calc(var(--header-height) + var(--space-lg));
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-tagline {
        font-size: 1.25rem;
    }

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

    .post-navigation {
        grid-template-columns: 1fr;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .breadcrumbs {
        font-size: 0.8125rem;
    }

    .breadcrumb-item {
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

/* ================================
   Quick Access Search Overlay
   ================================ */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 20, 0.95);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    animation: fadeIn 0.2s ease;
}

.search-overlay.active {
    display: flex;
}

.search-box {
    width: 90%;
    max-width: 600px;
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    box-shadow: 0 0 40px rgba(var(--color-primary-rgb), 0.4),
        0 20px 60px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

.search-input-wrapper {
    position: relative;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.search-input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    color: var(--color-text-bright);
    font-size: 1.25rem;
    font-family: var(--font-mono);
    outline: none;
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-input:focus {
    box-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.3);
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
    padding: var(--space-md);
}

.search-result-item {
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-result-item:hover,
.search-result-item.selected {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.1);
}

.search-hint {
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

/* ================================
   Keyboard Shortcuts Indicator
   ================================ */
.shortcuts-hint {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    background: rgba(var(--color-primary-rgb), 0.1);
    border: 1px solid rgba(var(--color-primary-rgb), 0.3);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
    z-index: 100;
}

.shortcuts-hint:hover {
    opacity: 1;
}

.kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    box-shadow: 0 2px 0 var(--color-border);
}

/* ================================
   Loading Indicator
   ================================ */
.cyber-loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(var(--color-primary-rgb), 0.3);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ================================
   Improved Accessibility
   ================================ */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Ensure sufficient touch targets on mobile */
@media (max-width: 768px) {

    .nav-link,
    .btn,
    .tag,
    .filter-chip {
        min-height: 44px;
        min-width: 44px;
        padding: var(--space-sm) var(--space-md);
    }
}

/* ================================
   Print Styles
   ================================ */
@media print {

    .site-header,
    .site-footer,
    .hero-cta,
    .post-navigation,
    .search-overlay,
    .shortcuts-hint {
        display: none;
    }

    body {
        color: #000;
        background: #fff;
    }

    .main-content {
        padding: 0;
        max-width: 100%;
    }

    a {
        color: #000;
    }

    pre,
    code {
        background: #f5f5f5;
        border: 1px solid #ddd;
    }
}

/* ================================
   Matrix Rain Effect (Optional Background)
   ================================ */
.matrix-rain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -2;
    opacity: 0.05;
}

/* ================================
   Enhanced Code Blocks
   ================================ */
.post-content pre,
.highlight pre {
    position: relative;
    border-left: 2px solid var(--color-border);
}

.post-content pre:hover,
.highlight pre:hover {
    border-left-color: var(--color-primary);
}

/* ================================
   Smooth Scrollbar
   ================================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 5px;
    border: 2px solid var(--color-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ================================
   Selection Color
   ================================ */
::selection {
    background: rgba(var(--color-primary-rgb), 0.4);
    color: white;
}

::-moz-selection {
    background: rgba(var(--color-primary-rgb), 0.4);
    color: white;
}

/* ================================
   Innovative Homepage Enhancements
   ================================ */

/* ================================
   404 Page
   ================================ */
.not-found {
    text-align: center;
    padding: var(--space-3xl) 0;
}

.not-found-header {
    margin-bottom: var(--space-xl);
}

.not-found-code {
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    letter-spacing: 0.08em;
    line-height: 1;
    color: rgba(var(--color-primary-rgb), 0.22);
    text-shadow: 0 0 24px rgba(var(--color-primary-rgb), 0.22);
    margin-bottom: var(--space-sm);
}

.not-found-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: var(--space-sm);
}

.not-found-text {
    color: var(--color-text-muted);
    max-width: 60ch;
    margin: 0 auto;
}

.not-found-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin: var(--space-xl) 0;
}

.not-found-hint {
    display: inline-flex;
    gap: var(--space-sm);
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    background: rgba(var(--color-primary-rgb), 0.08);
    border: 1px solid rgba(var(--color-primary-rgb), 0.22);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.hint-label {
    color: var(--color-primary);
}

.hint-kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.6em;
    padding: 0 0.4em;
    border-radius: 0.4em;
    border: 1px solid rgba(var(--color-primary-rgb), 0.35);
    background: rgba(var(--color-primary-rgb), 0.12);
    color: var(--color-text-bright);
}

/* Subtle Grid Background */
.cyber-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.02;
    background-image:
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* Status Badge - Elegant */
.status-badge {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(var(--color-primary-rgb), 0.1);
    border: 1px solid rgba(var(--color-primary-rgb), 0.3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.status-badge:hover {
    border-color: rgba(var(--color-primary-rgb), 0.5);
    background: rgba(var(--color-primary-rgb), 0.15);
}

/* Animated scan/glow around hero status */
.status-badge::after {
    content: "";
    position: absolute;
    inset: -2px;
    background: linear-gradient(
        120deg,
        transparent 0%,
        rgba(var(--color-primary-rgb), 0.18) 20%,
        transparent 40%,
        transparent 100%
    );
    transform: translateX(-120%);
    animation: hero-scan 4.5s ease-in-out infinite;
    pointer-events: none;
}

@keyframes hero-scan {
    0% { transform: translateX(-120%); }
    40% { transform: translateX(120%); }
    100% { transform: translateX(120%); }
}

.hero-role-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.role-tag {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-bright);
    background: rgba(var(--color-primary-rgb), 0.14);
    border: 1px solid rgba(var(--color-primary-rgb), 0.28);
    overflow: hidden;
}

.role-tag::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(var(--color-primary-rgb), 0.12) 35%,
        transparent 70%
    );
    transform: translateX(-120%);
    animation: role-tag-shimmer 5.5s ease-in-out infinite;
    pointer-events: none;
}

.role-tag:hover {
    border-color: rgba(var(--color-primary-rgb), 0.55);
    background: rgba(var(--color-primary-rgb), 0.08);
}

@keyframes role-tag-shimmer {
    0% { transform: translateX(-120%); }
    35% { transform: translateX(120%); }
    100% { transform: translateX(120%); }
}

@media (prefers-reduced-motion: reduce) {
    .status-badge::after,
    .role-tag::after {
        animation: none;
        display: none;
    }
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(var(--color-primary-rgb), 0.6);
    animation: pulse-subtle 3s ease-in-out infinite;
}

@keyframes pulse-subtle {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* Hero Title Text - Elegant Gradient */
.glitch-text {
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, var(--color-text-bright), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Button Glow Effect */
.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.2),
            transparent);
    transition: left 0.5s ease;
}

.btn-glow:hover::before {
    left: 100%;
}

.btn-icon {
    margin-right: var(--space-sm);
}


/* Enhanced Terminal */
.terminal-dots {
    display: flex;
    gap: var(--space-sm);
}

.terminal-actions {
    margin-left: auto;
}

.terminal-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.terminal-btn:hover {
    opacity: 1;
}

.user {
    color: var(--color-accent);
}

.host {
    color: var(--color-primary);
}

.path {
    color: var(--color-accent);
}

.cursor.blink {
    animation: blink 1s step-end infinite;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-text-muted);
    border-bottom: 2px solid var(--color-text-muted);
    transform: rotate(45deg);
}

/* Tech Stack Carousel */
.tech-stack {
    padding: var(--space-3xl) 0;
    overflow: hidden;
}

.section-title-centered {
    text-align: center;
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.tech-carousel {
    overflow: hidden;
    padding: var(--space-md) 0;
}

.tech-track {
    display: flex;
    gap: var(--space-lg);
    animation: scroll 30s linear infinite;
    width: max-content;
}

.tech-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.tech-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-full);
    white-space: nowrap;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.tech-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.tech-icon {
    font-size: 1.25rem;
}

/* Featured Section */
.featured-section {
    padding: var(--space-2xl) 0;
}

/* Featured/Pinned badge for post cards */
.featured-post-card {
    position: relative;
}

.featured-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--chip-padding-y) var(--chip-padding-x);
    background: var(--color-primary);
    color: var(--color-bg);
    font-size: var(--chip-font-size);
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-lg);
}

.featured-card {
    position: relative;
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

/* Cyan glow border on hover */
.featured-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, transparent, var(--color-cyan-glow), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.featured-card:hover {
    transform: translateY(-6px);
    box-shadow:
        var(--shadow-card-hover),
        0 0 16px var(--glow-soft);
    border-color: var(--color-primary);
}

.featured-card:hover::before {
    opacity: 0.6;
}

.featured-card-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-primary);
    color: var(--color-bg);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.featured-card-link {
    display: block;
    color: inherit;
}

.featured-card-content {
    padding: var(--space-xl);
}

.featured-card-section {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.featured-card-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-md);
    color: var(--color-text-bright);
    line-height: var(--leading-tight);
}

.featured-card-excerpt {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
}

.featured-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-muted);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.read-more {
    color: var(--color-primary);
    transition: transform var(--transition-fast);
}

.featured-card:hover .read-more {
    transform: translateX(4px);
}


/* Hero positioning adjustment */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-height));
}

/* Responsive adjustments for new features */
@media (max-width: 768px) {
    .featured-grid {
        grid-template-columns: 1fr;
    }

    .scroll-indicator {
        display: none;
    }

    .hero-image {
        display: none;
    }

    .footer-message {
        font-size: 0.875rem;
    }
}

/* ================================
   Hero Image / Avatar
   ================================ */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-avatar {
    position: relative;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
    border: 3px solid var(--color-border);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    box-shadow: 0 0 40px rgba(var(--color-primary-rgb), 0.15);
}

.hero-avatar .avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-avatar .avatar-placeholder {
    color: var(--color-text-muted);
}


/* ================================
   Buy Me a Coffee Button
   ================================ */
/* ================================
   Badge Components
   ================================ */

/* Difficulty Badges */
.badge-difficulty {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1.5px solid;
}

.badge-difficulty.easy {
    background: rgba(63, 185, 80, 0.1);
    border-color: var(--difficulty-easy);
    color: var(--difficulty-easy);
}

.badge-difficulty.medium {
    background: rgba(255, 149, 0, 0.1);
    border-color: var(--difficulty-medium);
    color: var(--difficulty-medium);
}

.badge-difficulty.hard {
    background: rgba(255, 107, 107, 0.1);
    border-color: var(--difficulty-hard);
    color: var(--difficulty-hard);
}

.badge-difficulty.insane {
    background: rgba(163, 113, 247, 0.1);
    border-color: var(--difficulty-insane);
    color: var(--difficulty-insane);
}

/* Platform Badges */
.badge-platform {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono);
    border: 1px solid;
}

.badge-platform.htb {
    background: rgba(163, 113, 247, 0.15);
    border-color: var(--platform-htb);
    color: var(--platform-htb);
}

.badge-platform.thm {
    background: rgba(255, 149, 0, 0.15);
    border-color: var(--platform-thm);
    color: var(--platform-thm);
}

.badge-platform.pg {
    background: rgba(var(--color-primary-rgb), 0.15);
    border-color: var(--platform-pg);
    color: var(--platform-pg);
}

.badge-platform.vulnhub,
.badge-platform.custom {
    background: rgba(139, 148, 158, 0.15);
    border-color: var(--color-text-muted);
    color: var(--color-text-muted);
}

/* OS Badges */
.badge-os {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

/* Severity Badges (CVE) */
.badge-severity {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border: 1.5px solid;
}

.badge-severity.low {
    background: rgba(63, 185, 80, 0.1);
    border-color: var(--severity-low);
    color: var(--severity-low);
}

.badge-severity.medium {
    background: rgba(255, 149, 0, 0.1);
    border-color: var(--severity-medium);
    color: var(--severity-medium);
}

.badge-severity.high {
    background: rgba(255, 107, 107, 0.1);
    border-color: var(--severity-high);
    color: var(--severity-high);
}

.badge-severity.critical {
    background: rgba(217, 70, 239, 0.1);
    border-color: var(--severity-critical);
    color: var(--severity-critical);
    box-shadow: 0 0 8px rgba(217, 70, 239, 0.3);
}

/* CVE ID Badge */
.badge-cve {
    display: inline-flex;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(var(--color-primary-rgb), 0.1);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--color-primary);
}

/* Post Card Badges Container */
.post-card-badges,
.writeup-card-badges,
.featured-card-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

/* ================================
   Homepage Enhancements
   ================================ */

/* About Preview Section */
.home-about {
    padding: var(--space-3xl) 0;
    border-top: 1px solid var(--color-border-muted);
}

.about-preview {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-2xl);
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.about-avatar-wrapper {
    display: flex;
    justify-content: center;
}

.avatar-circle {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
    border: 3px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    box-shadow: 0 0 30px rgba(var(--color-primary-rgb), 0.3);
    transition: all var(--transition-normal);
}

.avatar-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px rgba(var(--color-primary-rgb), 0.5);
}

.about-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-text-bright);
}

.about-content p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.link-with-arrow {
    color: var(--color-primary);
    font-weight: 600;
    transition: all var(--transition-fast);
    display: inline-block;
}

.link-with-arrow:hover {
    transform: translateX(4px);
    text-shadow: 0 0 8px rgba(var(--color-primary-rgb), 0.3);
}

/* Featured Grid - 3 Columns */
.featured-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

/* Section Title Centered */
.section-title-centered {
    text-align: center;
    font-size: var(--text-2xl);
    margin-bottom: var(--space-xl);
    color: var(--color-text-bright);
    line-height: var(--leading-tight);
}

.section-title-centered .section-icon {
    margin-right: var(--space-sm);
}

/* Tech Stack Carousel */
.tech-stack-section {
    padding: var(--space-3xl) 0;
    overflow: hidden;
    border-top: 1px solid var(--color-border-muted);
}

.tech-carousel {
    overflow: hidden;
    padding: var(--space-lg) 0;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.tech-track {
    display: flex;
    gap: var(--space-lg);
    animation: scroll-left 30s linear infinite;
    width: max-content;
}

.tech-track:hover {
    animation-play-state: paused;
}

@keyframes scroll-left {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.tech-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-full);
    white-space: nowrap;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.tech-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--glow-soft);
}

.tech-icon {
    font-size: 1.125rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .about-preview {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .avatar-circle {
        width: 150px;
        height: 150px;
        font-size: 3rem;
        margin: 0 auto;
    }

    .featured-grid-3 {
        grid-template-columns: 1fr;
    }
}

/* ================================
   Advanced Filters for Writeups
   ================================ */

.filter-bar-advanced {
    display: grid;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.filter-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.filter-chip {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    border: 1.5px solid var(--color-border-muted);
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

.filter-chip.is-active {
    background: rgba(var(--color-primary-rgb), 0.12);
    border-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
    box-shadow: 0 0 12px rgba(var(--color-primary-rgb), 0.2);
}

/* Writeups Grid */
.writeups-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.writeup-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-normal);
    position: relative;
}

/* Cyan glow border on hover */
.writeup-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, transparent, var(--color-cyan-glow), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.writeup-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover), 0 0 16px var(--glow-soft);
    border-color: var(--color-primary);
}

.writeup-card:hover::before {
    opacity: 0.6;
}

.writeup-card a {
    display: block;
    color: inherit;
    text-decoration: none;
}

.writeup-card-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.writeup-card-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-bright);
    margin-bottom: var(--space-sm);
    transition: color var(--transition-fast);
    line-height: var(--leading-tight);
}

.writeup-card:hover .writeup-card-title {
    color: var(--color-primary);
    text-shadow: 0 0 6px var(--glow-soft);
}

.writeup-card-excerpt {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    margin-bottom: var(--space-md);
}

.writeup-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border-muted);
}

.no-results {
    text-align: center;
    padding: var(--space-3xl);
    color: var(--color-text-muted);
}

@media (max-width: 1200px) {
    .writeups-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .writeups-grid {
        grid-template-columns: 1fr;
    }

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

    .filter-bar-advanced {
        padding: var(--space-md);
    }
}
/* ================================
   Platform Profiles
   ================================ */
/* ================================
   Platform Profiles Section
   ================================ */
.platform-profiles-section {
    margin-top: var(--space-3xl);
    padding: var(--space-2xl) 0;
}

.section-header-inline {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title-sm {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-bright);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.section-title-sm .section-icon {
    font-size: var(--text-2xl);
}

.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    max-width: 900px;
    margin: 0 auto;
}

.profile-card {
    position: relative;
    display: block;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-muted);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.profile-card:hover::before {
    transform: scaleX(1);
}

.profile-card:hover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.05);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(var(--color-primary-rgb), 0.2);
}

.profile-card-inner {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.profile-icon {
    color: var(--color-primary);
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    transition: transform var(--transition-fast);
}

.profile-card:hover .profile-icon {
    transform: scale(1.1);
}

.profile-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.profile-name {
    font-family: var(--font-mono);
    font-size: var(--text-md);
    font-weight: 600;
    color: var(--color-text-bright);
}

.profile-desc {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-family: var(--font-sans);
}

.profile-arrow {
    font-size: var(--text-xl);
    color: var(--color-primary);
    transition: transform var(--transition-fast);
    opacity: 0.6;
}

.profile-card:hover .profile-arrow {
    transform: translateX(4px);
    opacity: 1;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .profiles-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .platform-profiles-section {
        margin-top: var(--space-2xl);
        padding: var(--space-xl) 0;
    }
}