/* =============================================================================
   modern-color-tagged — Ghost 6 Theme
   Ghost-dark aesthetic, tag-driven accent colors
   ============================================================================= */

/* =============================================================================
   1. CUSTOM PROPERTIES
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
    /* Colors */
    --color-bg:       #0d1117;
    --color-surface:  #161b22;
    --color-border:   #30363d;
    --color-text:     #e6edf3;
    --color-muted:    #8b949e;

    --color-blue:     #58a6ff;
    --color-green:    #3fb950;
    --color-gold:     #e3b341;
    --color-purple:   #a371f7;

    /* Ghost 6 font variables — Ghost Admin overrides these when a custom font is set */
    --gh-font-heading: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --gh-font-body:    'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Typography */
    --font-sans:  var(--gh-font-body);
    --font-mono:  'IBM Plex Mono', 'Fira Code', 'Consolas', monospace;

    --font-size-base:  1rem;
    --font-size-sm:    0.875rem;
    --font-size-xs:    0.75rem;
    --line-height:     1.7;

    /* Spacing */
    --space-xs:   0.25rem;
    --space-sm:   0.5rem;
    --space-md:   1rem;
    --space-lg:   1.5rem;
    --space-xl:   2rem;
    --space-2xl:  3rem;
    --space-3xl:  4rem;

    /* Layout */
    --container-width:  960px;
    --nav-height:       60px;
    --card-radius:      8px;
    --border-radius:    6px;

    /* Card accent (overridden per card) */
    --card-accent:  var(--color-blue);

    /* Transitions */
    --transition:  150ms ease;
}

/* =============================================================================
   2. RESET & BASE
   ============================================================================= */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    background: none;
    border: none;
    font-family: inherit;
}

.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;
}

/* =============================================================================
   3. LAYOUT
   ============================================================================= */

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

.gh-main {
    flex: 1;
    padding-top: var(--nav-height);
}

.gh-container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* =============================================================================
   4. NAVIGATION
   ============================================================================= */

.gh-head {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.gh-head-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    gap: var(--space-lg);
}

/* Site logo / title */
.gh-head-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.gh-head-logo {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.gh-head-logo:hover {
    color: var(--color-blue);
}

.gh-head-logo img {
    height: 32px;
    width: auto;
}

/* Nav links */
.gh-head-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.gh-head-menu .nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.gh-head-menu .nav li a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-muted);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    transition: color var(--transition), background var(--transition);
}

.gh-head-menu .nav li a:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
}

/* Nav actions */
.gh-head-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.gh-search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--color-muted);
    border-radius: var(--border-radius);
    transition: color var(--transition), background var(--transition);
}

.gh-search-btn:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
}

.gh-search-btn svg {
    width: 16px;
    height: 16px;
}

/* Header subscribe CTA */
.gh-head-subscribe {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--color-blue);
    border: 1px solid rgba(88, 166, 255, 0.85);
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.18), rgba(88, 166, 255, 0.06));
    padding: 5px 10px;
    border-radius: 999px;
    transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition);
    letter-spacing: 0.02em;
    box-shadow: 0 0 0 1px rgba(13, 17, 23, 0.4) inset;
    white-space: nowrap;
}

.gh-head-subscribe:hover {
    color: var(--color-bg);
    background: var(--color-blue);
    border-color: var(--color-blue);
    transform: translateY(-1px);
}

.gh-head-subscribe-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    animation: gh-subscribe-pulse 1.8s ease-in-out infinite;
}

.gh-head-subscribe.is-member {
    color: var(--color-green);
    border-color: rgba(63, 185, 80, 0.8);
    background: linear-gradient(135deg, rgba(63, 185, 80, 0.18), rgba(63, 185, 80, 0.06));
}

.gh-head-subscribe.is-member:hover {
    color: var(--color-bg);
    background: var(--color-green);
    border-color: var(--color-green);
}

.gh-account-wrap {
    position: relative;
}

.gh-account-toggle {
    cursor: pointer;
}

.gh-account-panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: min(320px, calc(100vw - (var(--space-lg) * 2)));
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-top: 2px solid var(--color-green);
    border-radius: var(--card-radius);
    padding: var(--space-md);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 140;
}

.gh-account-panel[hidden] {
    display: none;
}

.gh-account-kicker {
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.gh-account-email {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    overflow-wrap: anywhere;
}

.gh-account-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-xs);
}

.gh-account-link {
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
    color: var(--color-muted);
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius);
    padding: 6px 8px;
    transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.gh-account-link:hover {
    color: var(--color-text);
    border-color: var(--color-green);
    background: rgba(63, 185, 80, 0.12);
}

@keyframes gh-subscribe-pulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.25); }
}

/* Mobile hamburger */
.gh-burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    color: var(--color-muted);
    padding: 4px;
}

.gh-burger-box {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 20px;
}

.gh-burger-inner {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* Mobile nav open state */
.gh-head.is-open .gh-head-menu {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-lg);
    align-items: flex-start;
}

.gh-head.is-open .gh-head-menu .nav {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
}

@media (max-width: 768px) {
    .gh-burger {
        display: flex;
    }

    .gh-head-menu {
        display: none;
    }

    .gh-head-subscribe {
        padding: 5px 9px;
    }

    .gh-account-panel {
        right: calc(-1 * var(--space-sm));
        width: min(300px, calc(100vw - (var(--space-lg) * 2)));
    }
}

/* =============================================================================
   5. HOME INTRO
   ============================================================================= */

.gh-home-intro {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    align-items: center;
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    background:
        radial-gradient(circle at 20% 0%, rgba(88, 166, 255, 0.14), transparent 45%),
        radial-gradient(circle at 80% 100%, rgba(63, 185, 80, 0.12), transparent 42%),
        var(--color-surface);
    overflow: hidden;
}

.gh-home-intro-kicker {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-green);
    margin-bottom: var(--space-sm);
}

.gh-home-intro-title {
    font-family: var(--gh-font-heading);
    font-size: clamp(1.35rem, 2.6vw, 1.8rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.gh-home-intro-text {
    font-size: var(--font-size-sm);
    color: var(--color-muted);
    line-height: 1.65;
}

.gh-home-intro-link {
    display: inline-flex;
    align-items: center;
    margin-top: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-blue);
    border: 1px solid rgba(88, 166, 255, 0.75);
    border-radius: 999px;
    padding: 4px 10px;
    transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.gh-home-intro-link:hover {
    color: var(--color-bg);
    background: var(--color-blue);
    border-color: var(--color-blue);
}

.gh-home-intro-media {
    border: 1px solid var(--color-border);
    border-top: 2px solid var(--color-blue);
    border-radius: var(--card-radius);
    background: var(--color-bg);
    overflow: hidden;
}

.gh-home-intro-video {
    display: block;
    width: 100%;
    height: auto;
    max-height: 420px;
    background: #000;
}

@media (max-width: 860px) {
    .gh-home-intro {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        padding: var(--space-lg);
    }

    .gh-home-intro-video {
        max-height: none;
    }
}

/* =============================================================================
   6. LEARNING PAGE
   ============================================================================= */

.gh-learning-page {
    max-width: none;
    padding-left: 0;
    padding-right: 0;
}

.page-learn-ai-concepts .gh-container {
    max-width: 1360px;
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
}

.gh-learning-header {
    background:
        radial-gradient(circle at 0% 0%, rgba(88, 166, 255, 0.12), transparent 52%),
        radial-gradient(circle at 100% 100%, rgba(63, 185, 80, 0.08), transparent 48%),
        var(--color-surface);
    border: 1px solid var(--color-border);
    border-top: 2px solid var(--color-blue);
    border-radius: var(--card-radius);
    padding: var(--space-xl);
}

.gh-learning-kicker {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-green);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-sm);
}

.gh-learning-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    margin: var(--space-lg) 0 var(--space-xl);
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    overflow: hidden;
    background: var(--color-surface);
}

.gh-learning-stat {
    padding: 10px 14px;
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    text-align: center;
}

.gh-learning-stat:last-child {
    border-right: none;
}

.gh-learning-stat-value {
    color: var(--color-text);
    font-size: 0.82rem;
    font-weight: 600;
}

.gh-learning-path {
    margin-bottom: var(--space-xl);
}

.gh-learning-path h2 {
    font-size: 0.78rem;
    font-family: var(--font-mono);
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--space-md);
}

.gh-learning-path-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--space-sm);
    margin: 0;
    padding: 0;
}

.gh-learning-path-item {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.02);
    padding: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-height: 66px;
}

.gh-learning-path-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid currentColor;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-muted);
    flex-shrink: 0;
}

.gh-learning-path-item strong {
    display: block;
    font-size: 0.84rem;
    line-height: 1.3;
}

.gh-learning-path-item small {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
}

.gh-learning-path-item:nth-child(1) .gh-learning-path-num { color: var(--color-blue); }
.gh-learning-path-item:nth-child(2) .gh-learning-path-num { color: var(--color-green); }
.gh-learning-path-item:nth-child(3) .gh-learning-path-num { color: var(--color-gold); }
.gh-learning-path-item:nth-child(4) .gh-learning-path-num { color: var(--color-purple); }
.gh-learning-path-item:nth-child(5) .gh-learning-path-num { color: var(--color-text); }

.gh-learning-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.gh-learning-card {
    border: 1px solid var(--color-border);
    border-top: 2px solid var(--color-border);
    border-radius: var(--card-radius);
    background: var(--color-surface);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.gh-learning-card.is-blue { border-top-color: var(--color-blue); }
.gh-learning-card.is-green { border-top-color: var(--color-green); }
.gh-learning-card.is-gold { border-top-color: var(--color-gold); }
.gh-learning-card.is-purple { border-top-color: var(--color-purple); }

.gh-learning-card-wide {
    grid-column: 1 / -1;
}

.gh-learning-card-top {
    display: flex;
    justify-content: flex-end;
}

.gh-learning-card-badge {
    font-family: var(--font-mono);
    font-size: 0.64rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: 1px solid var(--color-border);
    color: var(--color-muted);
    border-radius: 999px;
    padding: 2px 8px;
}

.gh-learning-card h3 {
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.25;
}

.gh-learning-card p {
    margin: 0;
    color: var(--color-muted);
    line-height: 1.65;
    font-size: var(--font-size-sm);
}

.gh-learning-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.gh-learning-tags span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.02);
    color: var(--color-muted);
    padding: 2px 7px;
}

.gh-learning-link {
    margin-top: auto;
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 2px;
}

.gh-learning-modules h2 {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: var(--color-muted);
    margin-bottom: var(--space-md);
}

.gh-learning-module {
    border: 1px solid var(--color-border);
    border-left: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.02);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-md);
}

.gh-learning-module.is-blue { border-left-color: var(--color-blue); }
.gh-learning-module.is-green { border-left-color: var(--color-green); }
.gh-learning-module.is-gold { border-left-color: var(--color-gold); }
.gh-learning-module.is-purple { border-left-color: var(--color-purple); }

.gh-learning-module h3 {
    margin-top: 0;
    margin-bottom: var(--space-xs);
}

.gh-learning-module p {
    margin-bottom: var(--space-sm);
    color: var(--color-muted);
}

.gh-learning-module ul {
    margin: 0;
}

.gh-learning-module li {
    color: #c7d0d9;
}

.gh-learning-full {
    margin-top: var(--space-2xl);
}

.gh-learning-full h2 {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: var(--color-muted);
    margin-bottom: var(--space-sm);
}

.gh-learning-full-note {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-md);
}

.gh-learning-layout {
    display: grid;
    grid-template-columns: 272px minmax(0, 1fr);
    gap: var(--space-md);
    align-items: start;
}

.gh-learning-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 10px);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.gh-learning-tab {
    width: 100%;
    text-align: left;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-muted);
    border-radius: var(--border-radius);
    padding: 10px 11px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.gh-learning-tab span {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid currentColor;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.64rem;
}

.gh-learning-tab:hover {
    color: var(--color-text);
    border-color: var(--color-muted);
}

.gh-learning-tab.is-active {
    color: var(--color-blue);
    border-color: rgba(88, 166, 255, 0.55);
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.12), rgba(88, 166, 255, 0.03));
}

.gh-learning-stage {
    min-width: 0;
}

.gh-learning-panel {
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    background: var(--color-surface);
    overflow: clip;
    margin-bottom: var(--space-md);
}

.gh-learning-panel[hidden] {
    display: none;
}

.gh-learning-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.02);
}

.gh-learning-panel-header h3 {
    margin: 0;
    font-size: 0.86rem;
    letter-spacing: 0.02em;
    color: var(--color-text);
}

.gh-learning-panel-header a {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--color-muted);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.gh-learning-panel iframe {
    width: 100%;
    min-height: 520px;
    border: 0;
    display: block;
    background: #0d1117;
}

@media (max-width: 900px) {
    .gh-learning-layout {
        grid-template-columns: 1fr;
    }

    .gh-learning-sidebar {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .gh-learning-path-list {
        grid-template-columns: 1fr;
    }

    .gh-learning-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .page-learn-ai-concepts .gh-container {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
    }

    .gh-learning-sidebar {
        grid-template-columns: 1fr;
    }

    .gh-learning-header {
        padding: var(--space-lg);
    }

    .gh-learning-stats {
        grid-template-columns: 1fr 1fr;
    }

    .gh-learning-stat:nth-child(2) {
        border-right: none;
    }

    .gh-learning-stat:nth-child(1),
    .gh-learning-stat:nth-child(2) {
        border-bottom: 1px solid var(--color-border);
    }
}

/* =============================================================================
   7. COLOR TAGGING SYSTEM
   ============================================================================= */

/* Cycle fallback: every card gets accent-cycle; nth-child rotates colors */
.gh-card.accent-cycle:nth-child(4n+1) { --card-accent: var(--color-blue); }
.gh-card.accent-cycle:nth-child(4n+2) { --card-accent: var(--color-green); }
.gh-card.accent-cycle:nth-child(4n+3) { --card-accent: var(--color-gold); }
.gh-card.accent-cycle:nth-child(4n+0) { --card-accent: var(--color-purple); }

/* Slug-based overrides via CSS attribute selectors on class="gh-card ... tag-{slug}"
   These fire whenever the tag slug contains the keyword, overriding the cycle default. */

/* Blue — fundamentals, foundations */
.gh-card[class*="tag-fundamental"],
.gh-card[class*="tag-foundation"] { --card-accent: var(--color-blue); }

/* Green — techniques, core, guides */
.gh-card[class*="tag-technique"],
.gh-card[class*="tag-core"],
.gh-card[class*="tag-guide"] { --card-accent: var(--color-green); }

/* Gold — protocols, standards */
.gh-card[class*="tag-protocol"],
.gh-card[class*="tag-standard"] { --card-accent: var(--color-gold); }

/* Purple — advanced, deep */
.gh-card[class*="tag-advanced"],
.gh-card[class*="tag-deep"] { --card-accent: var(--color-purple); }

/* =============================================================================
   8. POST CARDS
   ============================================================================= */

/* Grid wrapper */
.gh-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
    padding: var(--space-2xl) 0;
}

/* Card element — also the <a> tag */
.gh-card {
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--card-accent);
    border-radius: var(--card-radius);
    overflow: hidden;
    color: var(--color-text);
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
}

.gh-card:hover {
    border-color: var(--card-accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    color: var(--color-text);
}

/* Feature image */
.gh-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg);
}

.gh-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

.gh-card:hover .gh-card-image img {
    transform: scale(1.03);
}

/* Icon container (when no feature image) */
.gh-card-icon {
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--card-accent);
    letter-spacing: -0.02em;
    user-select: none;
}

/* Card body */
.gh-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--space-lg);
    gap: var(--space-sm);
}

/* Tag badge */
.gh-card-tag {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--card-accent);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Title */
.gh-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
    margin: 0;
}

/* Excerpt */
.gh-card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-muted);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Card footer */
.gh-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-muted);
}

.gh-card-footer time {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 999px;
    padding: 2px 8px;
    line-height: 1.35;
    white-space: nowrap;
}

.gh-card:hover .gh-card-footer time {
    color: var(--card-accent);
    border-color: var(--card-accent);
}

.gh-card-author {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.gh-card-author-avatar {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    object-fit: cover;
}

@media (max-width: 600px) {
    .gh-feed {
        grid-template-columns: 1fr;
    }
}

/* =============================================================================
   9. POST CONTENT
   ============================================================================= */

.gh-article {
    max-width: 720px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
}

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

.gh-article-tag {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-blue);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    display: block;
}

.gh-article-title {
    font-family: var(--gh-font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.03em;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.gh-article-excerpt {
    font-size: 1.1rem;
    color: var(--color-muted);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

/* Separator appears only when reading-time span has content (populated by JS) */
.gh-reading-time:not(:empty)::before {
    content: ' · ';
}

.gh-article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-muted);
}

.gh-article-meta time {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    color: var(--color-text);
    border: 1px solid rgba(88, 166, 255, 0.45);
    background: rgba(88, 166, 255, 0.1);
    border-radius: 999px;
    padding: 3px 10px;
    line-height: 1.35;
    white-space: nowrap;
}

.gh-article-author-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

.gh-article-feature-image {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
    border-radius: var(--card-radius);
    margin-bottom: var(--space-2xl);
    border: 1px solid var(--color-border);
}

/* Prose content */
.gh-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
}

.gh-content h1,
.gh-content h2,
.gh-content h3,
.gh-content h4,
.gh-content h5,
.gh-content h6 {
    font-family: var(--gh-font-heading);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin: var(--space-2xl) 0 var(--space-md);
}

.gh-content h2 { font-size: 1.5rem; }
.gh-content h3 { font-size: 1.25rem; }
.gh-content h4 { font-size: 1.1rem; }

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

.gh-content a {
    color: var(--color-blue);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(88, 166, 255, 0.4);
}

.gh-content a:hover {
    text-decoration-color: var(--color-blue);
}

.gh-content strong { color: var(--color-text); font-weight: 600; }
.gh-content em { font-style: italic; }

.gh-content ul,
.gh-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.gh-content ul { list-style: disc; }
.gh-content ol { list-style: decimal; }

.gh-content li {
    margin-bottom: var(--space-xs);
}

/* Code inline */
.gh-content code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    color: var(--color-green);
    background: rgba(63, 185, 80, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(63, 185, 80, 0.2);
}

/* Code blocks */
.gh-content pre {
    background: #010409;
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    padding: var(--space-lg);
    overflow-x: auto;
    margin-bottom: var(--space-lg);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.gh-content pre code {
    background: none;
    border: none;
    padding: 0;
    color: var(--color-text);
    font-size: inherit;
}

/* Blockquote */
.gh-content blockquote {
    border-left: 3px solid var(--color-blue);
    margin: var(--space-xl) 0;
    padding: var(--space-md) var(--space-lg);
    background: rgba(88, 166, 255, 0.05);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    color: var(--color-muted);
    font-style: italic;
}

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

/* Tables */
.gh-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-sm);
    overflow-x: auto;
    display: block;
}

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

.gh-content th {
    background: var(--color-surface);
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-text);
}

.gh-content tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.02);
}

/* Images in content */
.gh-content figure {
    margin: var(--space-xl) 0;
}

.gh-content figure img {
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    width: 100%;
}

.gh-content figcaption {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-muted);
    text-align: center;
    margin-top: var(--space-sm);
}

/* HR */
.gh-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-2xl) 0;
}

/* About page refinements */
.page-about .gh-article {
    max-width: 860px;
}

.page-about .gh-article-header {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-xl);
    padding: var(--space-xl);
    border: 1px solid var(--color-border);
    border-top: 2px solid var(--color-blue);
    border-radius: var(--card-radius);
    background:
        radial-gradient(circle at 0% 0%, rgba(88, 166, 255, 0.12), transparent 48%),
        radial-gradient(circle at 100% 100%, rgba(63, 185, 80, 0.1), transparent 45%),
        var(--color-surface);
}

.page-about .gh-article-title {
    margin-bottom: var(--space-sm);
}

.page-about .gh-article-excerpt {
    margin-bottom: 0;
    max-width: 72ch;
}

.page-about .gh-content > p:first-of-type {
    font-size: 1.06rem;
    color: #c7d0d9;
}

.page-about .gh-content > h2 {
    margin-top: var(--space-3xl);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.page-about .gh-content > h3 {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-green);
}

.page-about .gh-content > ul,
.page-about .gh-content > ol {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-left: 2px solid rgba(88, 166, 255, 0.55);
    border-radius: var(--border-radius);
    padding: var(--space-md) var(--space-xl);
}

.page-about .gh-content .kg-callout-card,
.page-about .gh-content .kg-toggle-card,
.page-about .gh-content .kg-bookmark-card {
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
}

.page-about .gh-content figure img,
.page-about .gh-content .kg-image-card img,
.page-about .gh-content .kg-gallery-image img {
    border-top: 2px solid rgba(88, 166, 255, 0.65);
}

.page-about .gh-about-bio-card {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: var(--space-lg);
    align-items: start;
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
    border: 1px solid var(--color-border);
    border-left: 2px solid rgba(63, 185, 80, 0.7);
    border-radius: var(--card-radius);
    background:
        linear-gradient(110deg, rgba(63, 185, 80, 0.07), transparent 38%),
        var(--color-surface);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.22);
}

.page-about .gh-about-bio-media {
    width: 132px;
    margin: 0;
}

.page-about .gh-about-bio-media img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    border-top: 1px solid var(--color-border);
}

.page-about .gh-about-bio-media figcaption {
    display: none;
}

.page-about .gh-about-bio-body > h2,
.page-about .gh-about-bio-body > h3,
.page-about .gh-about-bio-body > h4 {
    margin: 0 0 var(--space-sm);
    font-family: var(--gh-font-heading);
    font-size: 1.25rem;
    line-height: 1.25;
    letter-spacing: -0.02em;
    text-transform: none;
    color: var(--color-text);
}

.page-about .gh-about-bio-body > p {
    margin-bottom: var(--space-md);
    color: #c7d0d9;
}

.page-about .gh-about-bio-body > p:last-child {
    margin-bottom: 0;
}

/* Fallback portrait sizing when biography cards are not detected */
.page-about .gh-content:not(.gh-about-bio-enhanced) .kg-image-card img,
.page-about .gh-content:not(.gh-about-bio-enhanced) figure img {
    max-width: min(100%, 180px);
    height: auto;
}

@media (max-width: 768px) {
    .page-about .gh-article-header {
        margin-top: var(--space-md);
        padding: var(--space-lg);
    }

    .page-about .gh-about-bio-card {
        grid-template-columns: 1fr;
        gap: var(--space-md);
        padding: var(--space-md);
    }

    .page-about .gh-about-bio-media {
        width: 112px;
    }
}

/* =============================================================================
   8. ARCHIVE HEADERS (tag.hbs / author.hbs)
   ============================================================================= */

.gh-archive-header {
    padding: var(--space-3xl) 0 var(--space-xl);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-xl);
}

.gh-archive-meta {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.gh-archive-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.gh-archive-tag-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-blue);
}

.gh-archive-title {
    font-family: var(--gh-font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-sm);
}

.gh-archive-description {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
    max-width: 600px;
}

.gh-archive-count {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-muted);
    margin-top: var(--space-sm);
}

/* =============================================================================
   9. SUBSCRIBE & MEMBERSHIP
   ============================================================================= */

.gh-subscribe {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    padding: var(--space-2xl);
    text-align: center;
    margin: var(--space-3xl) 0;
}

.gh-subscribe-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.gh-subscribe-description {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-lg);
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
}

.gh-subscribe-form {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.gh-subscribe-input {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-sm) var(--space-md);
    min-width: 240px;
    outline: none;
    transition: border-color var(--transition);
}

.gh-subscribe-input:focus {
    border-color: var(--color-blue);
}

.gh-subscribe-input::placeholder {
    color: var(--color-muted);
}

/* Buttons */
.gh-btn {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-bg);
    background: var(--color-blue);
    border: 1px solid var(--color-blue);
    border-radius: var(--border-radius);
    padding: var(--space-sm) var(--space-lg);
    transition: background var(--transition), color var(--transition);
    letter-spacing: 0.02em;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
}

.gh-btn:hover {
    background: #79bcff;
    border-color: #79bcff;
    color: var(--color-bg);
}

.gh-btn-outline {
    color: var(--color-blue);
    background: transparent;
}

.gh-btn-outline:hover {
    background: var(--color-blue);
    color: var(--color-bg);
}

/* Membership */
.gh-membership {
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.05), rgba(163, 113, 247, 0.05));
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    padding: var(--space-2xl);
    text-align: center;
    margin: var(--space-2xl) 0;
}

.gh-membership-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.gh-membership-description {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-lg);
}

.gh-membership-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* =============================================================================
   10. PAGINATION
   ============================================================================= */

.gh-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-2xl) 0;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

.gh-pagination a,
.gh-pagination-current {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-sm);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    color: var(--color-muted);
    transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.gh-pagination a:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-muted);
}

.gh-pagination-current {
    color: var(--color-text);
    background: var(--color-surface);
    border-color: var(--color-blue);
}

/* =============================================================================
   11. FOOTER
   ============================================================================= */

.gh-foot {
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) 0;
    margin-top: var(--space-3xl);
}

.gh-foot-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-muted);
}

.gh-foot-nav {
    display: flex;
    gap: var(--space-md);
}

.gh-foot-nav a {
    color: var(--color-muted);
    transition: color var(--transition);
}

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

/* =============================================================================
   12. ERROR PAGE
   ============================================================================= */

.gh-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--nav-height));
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
}

.gh-error-code {
    font-family: var(--font-mono);
    font-size: 6rem;
    font-weight: 700;
    color: var(--color-border);
    line-height: 1;
    margin-bottom: var(--space-md);
}

.gh-error-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.gh-error-description {
    color: var(--color-muted);
    margin-bottom: var(--space-xl);
}

/* =============================================================================
   Ghost Card Assets (injected styles override)
   ============================================================================= */

.kg-width-wide {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.kg-width-full {
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
}

.kg-image-card img {
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.kg-callout-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
    display: flex;
    gap: var(--space-md);
}

.kg-callout-emoji {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.kg-toggle-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    margin-bottom: var(--space-lg);
    overflow: hidden;
}

.kg-toggle-heading-text {
    font-weight: 600;
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
}

.kg-bookmark-card {
    border: 1px solid var(--color-border);
    border-radius: var(--card-radius);
    overflow: hidden;
    margin-bottom: var(--space-lg);
    background: var(--color-surface);
}

.kg-bookmark-container {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    text-decoration: none;
    color: var(--color-text);
}

.kg-bookmark-content { flex: 1; }
.kg-bookmark-title { font-weight: 600; font-size: var(--font-size-sm); }
.kg-bookmark-description { color: var(--color-muted); font-size: var(--font-size-xs); margin-top: 4px; }
.kg-bookmark-thumbnail img { width: 120px; height: 80px; object-fit: cover; border-radius: 4px; }
.kg-bookmark-metadata { display: flex; align-items: center; gap: var(--space-xs); margin-top: 6px; }
.kg-bookmark-icon { width: 16px; height: 16px; border-radius: 2px; }
.kg-bookmark-author { font-size: var(--font-size-xs); color: var(--color-muted); }
.kg-bookmark-publisher { font-size: var(--font-size-xs); color: var(--color-muted); }

/* Gallery card */
.kg-gallery-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.kg-gallery-row {
    display: flex;
    gap: var(--space-xs);
}

.kg-gallery-image {
    flex: 1;
    min-width: 0;
}

.kg-gallery-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}