/* =============================================================================
   ONE COMMAND — A Technical Deep Dive
   
   Typography: Cormorant Garamond (display) · Inter (body) · IBM Plex Mono (code)
   Colors: Warm charcoal, cream paper, gold accent
   Grid: 8px base unit
   
   Redesigned: December 30, 2025
   ============================================================================= */

/* -----------------------------------------------------------------------------
   Tokens
   ----------------------------------------------------------------------------- */

:root {
    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-mono: 'IBM Plex Mono', 'SF Mono', Consolas, monospace;
    
    /* Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-hero: clamp(3rem, 8vw, 5rem);
    
    /* Colors - LIGHT MODE (readable!) */
    --bg: #faf8f5;
    --bg-alt: #f3f0eb;
    --bg-code: #1a1a1a;
    
    --text: #2a2520;
    --text-muted: #6b6560;
    --text-faint: #9a958f;
    
    --accent: #c9a96e;
    --accent-dim: #a8895a;
    
    --border: #e5e0d8;
    --border-strong: #d0c9be;
    
    /* Spacing */
    --sp-1: 0.25rem;
    --sp-2: 0.5rem;
    --sp-3: 0.75rem;
    --sp-4: 1rem;
    --sp-6: 1.5rem;
    --sp-8: 2rem;
    --sp-12: 3rem;
    --sp-16: 4rem;
    --sp-20: 5rem;
    --sp-24: 6rem;
    
    /* Layout */
    --content-width: 640px;
    --wide-width: 800px;
    
    /* Motion */
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1a1816;
        --bg-alt: #222019;
        --bg-code: #0d0d0d;
        
        --text: #f0ebe5;
        --text-muted: #a8a098;
        --text-faint: #706860;
        
        --border: #3a3530;
        --border-strong: #4a453e;
    }
}

/* -----------------------------------------------------------------------------
   Skip Link (Accessibility)
   ----------------------------------------------------------------------------- */

.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-code);
    color: var(--accent);
    padding: var(--sp-3) var(--sp-6);
    border-radius: 0 0 6px 6px;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    text-decoration: none;
    z-index: 10001;
    transition: top 0.2s var(--ease);
}

.skip-link:focus {
    top: 0;
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* -----------------------------------------------------------------------------
   Reading Progress Bar
   ----------------------------------------------------------------------------- */

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--border);
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s var(--ease);
}

.reading-progress.visible {
    opacity: 1;
}

.reading-progress-bar {
    height: 100%;
    background: var(--accent);
    width: 0%;
    transition: width 0.1s linear;
}

/* -----------------------------------------------------------------------------
   Sticky Navigation
   ----------------------------------------------------------------------------- */

.sticky-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 9998;
    transform: translateY(-100%);
    transition: transform 0.3s var(--ease);
}

.sticky-nav.visible {
    transform: translateY(0);
}

.sticky-nav-inner {
    max-width: var(--wide-width);
    margin: 0 auto;
    padding: var(--sp-3) var(--sp-6);
    display: flex;
    align-items: center;
    gap: var(--sp-6);
}

.sticky-nav-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--text);
    flex-shrink: 0;
}

.sticky-nav-links {
    display: flex;
    gap: var(--sp-4);
    list-style: none;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.sticky-nav-links::-webkit-scrollbar {
    display: none;
}

.sticky-nav-links li a {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-decoration: none;
    white-space: nowrap;
    padding: var(--sp-1) var(--sp-2);
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}

.sticky-nav-links li a:hover {
    color: var(--text);
    background: var(--bg-alt);
}

.sticky-nav-links li a.active {
    color: var(--accent);
    background: transparent;
}

.sticky-nav-links li a::before {
    content: attr(data-section) " ";
    font-family: var(--font-mono);
    color: var(--accent);
    opacity: 0.6;
}

/* -----------------------------------------------------------------------------
   Reset & Base
   ----------------------------------------------------------------------------- */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
}

/* -----------------------------------------------------------------------------
   Typography
   ----------------------------------------------------------------------------- */

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.2;
    color: var(--text);
}

h1 { font-size: var(--text-hero); }
h2 { font-size: var(--text-4xl); font-style: italic; }
h3 { font-size: var(--text-2xl); font-style: italic; }
h4 { font-size: var(--text-xl); }

p {
    margin-bottom: var(--sp-4);
    max-width: 65ch;
}

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

a:hover {
    text-decoration: underline;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--bg-alt);
    padding: 0.1em 0.3em;
    border-radius: 3px;
}

/* -----------------------------------------------------------------------------
   Sections
   ----------------------------------------------------------------------------- */

.scene {
    padding: var(--sp-24) var(--sp-6);
}

.scene-alt {
    background: var(--bg-alt);
}

.scene-container {
    max-width: var(--content-width);
    margin: 0 auto;
}

.scene-wide {
    max-width: var(--wide-width);
}

/* -----------------------------------------------------------------------------
   Hero Section
   ----------------------------------------------------------------------------- */

.scene-hook {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--sp-8);
}

.hook-container {
    max-width: 900px;
}

.hook-meta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-4);
}

.hook-eyebrow {
    display: block;
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.hook-reading-time {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--text-sm);
    color: var(--text-faint);
    font-family: var(--font-mono);
}

.hook-reading-time svg {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

.hook-title {
    font-size: var(--text-hero);
    font-style: italic;
    margin-bottom: var(--sp-6);
}

.hook-subtitle {
    font-size: var(--text-lg);
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: var(--sp-12);
    text-wrap: balance;
    max-width: 600px;
}

/* Terminal */
.terminal {
    background: var(--bg-code);
    border-radius: 8px;
    overflow: hidden;
    text-align: left;
    max-width: 500px;
    margin: 0 auto var(--sp-12);
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.terminal-chrome {
    background: #2d2d2d;
    padding: var(--sp-3) var(--sp-4);
    display: flex;
    gap: var(--sp-2);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f57;
}

.terminal-dot:nth-child(2) { background: #febc2e; }
.terminal-dot:nth-child(3) { background: #28c840; }

.terminal-screen {
    padding: var(--sp-6);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: #d4d4d4;
}

.terminal-line {
    margin-bottom: var(--sp-4);
}

.terminal-prompt {
    color: var(--accent);
    margin-right: var(--sp-2);
}

.terminal-output {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.output-item {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    opacity: 0;
    animation: fadeIn 0.3s var(--ease) forwards;
    animation-delay: var(--delay, 0s);
}

.output-icon {
    color: #666;
}

.output-text {
    flex: 1;
    color: #999;
}

.output-check {
    color: #28c840;
}

.terminal-result {
    margin-top: var(--sp-6);
    padding-top: var(--sp-4);
    border-top: 1px solid #333;
    color: var(--accent);
}

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

.hook-scroll {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-2);
    color: var(--text-faint);
    font-size: var(--text-sm);
}

.hook-scroll svg {
    width: 20px;
    height: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(5px); }
}

/* -----------------------------------------------------------------------------
   Section Headers
   ----------------------------------------------------------------------------- */

.section-header {
    margin-bottom: var(--sp-12);
}

.section-number {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--accent);
    margin-bottom: var(--sp-2);
}

.section-title {
    margin-bottom: var(--sp-4);
}

.section-lead {
    font-size: var(--text-lg);
    color: var(--text-muted);
    text-wrap: balance;
}

/* -----------------------------------------------------------------------------
   Content Blocks
   ----------------------------------------------------------------------------- */

.content-block {
    margin-bottom: var(--sp-12);
}

.content-block h3 {
    margin-bottom: var(--sp-4);
}

.content-block p {
    color: var(--text);
}

/* Stats */
.stats-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-8);
    margin-bottom: var(--sp-8);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--accent);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* Code Blocks */
.code-block {
    background: var(--bg-code);
    border-radius: 6px;
    margin: var(--sp-6) 0;
    overflow: hidden;
}

.code-header {
    background: #252525;
    padding: var(--sp-2) var(--sp-4);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: #888;
}

.code-content {
    padding: var(--sp-4);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: #d4d4d4;
    overflow-x: auto;
    line-height: 1.6;
}

.code-content .keyword { color: #c586c0; }
.code-content .function { color: #dcdcaa; }
.code-content .string { color: #ce9178; }
.code-content .comment { color: #6a9955; font-style: italic; }
.code-content .number { color: #b5cea8; }

/* Tables */
.data-table {
    width: 100%;
    margin: var(--sp-6) 0;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: var(--sp-3) var(--sp-4);
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table td {
    font-size: var(--text-sm);
}

.data-table .mono {
    font-family: var(--font-mono);
    color: var(--accent);
}

/* Callout */
.callout {
    background: var(--bg-alt);
    border-left: 3px solid var(--accent);
    padding: var(--sp-6);
    margin: var(--sp-8) 0;
    border-radius: 0 6px 6px 0;
}

.callout h4 {
    margin-bottom: var(--sp-2);
}

.callout p {
    margin-bottom: 0;
    color: var(--text-muted);
}

/* Quote */
blockquote {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-style: italic;
    color: var(--text);
    border-left: 3px solid var(--accent);
    padding-left: var(--sp-6);
    margin: var(--sp-8) 0;
}

/* Lists */
.feature-list {
    list-style: none;
    margin: var(--sp-4) 0;
}

.feature-list li {
    padding: var(--sp-2) 0;
    padding-left: var(--sp-6);
    position: relative;
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Trigger List */
.trigger-list {
    margin: var(--sp-6) 0;
}

.trigger-item {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--border);
}

.trigger-event {
    flex: 1;
    font-size: var(--text-sm);
}

.trigger-arrow {
    color: var(--accent);
}

.trigger-action {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* Cards */
.card-grid {
    display: grid;
    gap: var(--sp-4);
    margin: var(--sp-6) 0;
}

.card {
    background: var(--bg-alt);
    padding: var(--sp-4);
    border-radius: 6px;
}

.card-title {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--accent);
    margin-bottom: var(--sp-2);
}

.card-text {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-bottom: 0;
}

/* -----------------------------------------------------------------------------
   Integration Sections
   ----------------------------------------------------------------------------- */

.integration-header {
    margin-bottom: var(--sp-8);
}

.integration-title {
    display: flex;
    align-items: baseline;
    gap: var(--sp-4);
    margin-bottom: var(--sp-2);
}

.integration-subtitle {
    font-size: var(--text-lg);
    color: var(--text-muted);
    margin-bottom: 0;
}

/* -----------------------------------------------------------------------------
   Architecture Diagram
   ----------------------------------------------------------------------------- */

.arch-diagram {
    margin: var(--sp-8) 0;
}

.arch-layer {
    display: flex;
    justify-content: center;
    gap: var(--sp-4);
    margin-bottom: var(--sp-4);
}

.arch-box {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    padding: var(--sp-4) var(--sp-6);
    border-radius: 6px;
    text-align: center;
}

.arch-box-main {
    background: var(--bg-code);
    border-color: var(--accent);
    color: #d4d4d4;
}

.arch-label {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    display: block;
}

.arch-sublabel {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

.arch-connector {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 auto;
}

/* Interactive Architecture Diagram */
.arch-box {
    cursor: pointer;
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s;
}

.arch-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.arch-box:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.arch-box-main:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px rgba(201, 169, 110, 0.2);
}

.arch-box[data-tooltip] {
    position: relative;
}

.arch-box[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: var(--bg-code);
    color: #d4d4d4;
    padding: var(--sp-2) var(--sp-3);
    border-radius: 4px;
    font-size: var(--text-xs);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    z-index: 10;
}

.arch-box[data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

/* Tiers */
.tier-row {
    display: flex;
    gap: var(--sp-2);
    margin-bottom: var(--sp-2);
}

.tier {
    flex: 1;
    padding: var(--sp-2) var(--sp-3);
    border-radius: 4px;
    font-size: var(--text-xs);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tier-critical { background: #4a2020; color: #ff8080; }
.tier-high { background: #4a3a20; color: #ffc080; }
.tier-medium { background: #3a4a20; color: #c0ff80; }
.tier-low { background: #204a4a; color: #80ffc0; }

/* -----------------------------------------------------------------------------
   Safety Section
   ----------------------------------------------------------------------------- */

.safety-hero {
    text-align: center;
    margin-bottom: var(--sp-12);
}

.safety-formula {
    font-family: var(--font-mono);
    font-size: var(--text-4xl);
    color: var(--accent);
    margin-bottom: var(--sp-2);
}

.safety-meaning {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-style: italic;
    color: var(--text-muted);
}

.safety-rules {
    display: grid;
    gap: var(--sp-3);
}

.safety-rule {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
    padding: var(--sp-3) var(--sp-4);
    background: var(--bg-alt);
    border-radius: 6px;
}

.rule-icon {
    font-size: var(--text-xl);
}

.rule-name {
    font-weight: 500;
    min-width: 100px;
}

.rule-constraint {
    flex: 1;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* -----------------------------------------------------------------------------
   Lessons / Yaks Section
   ----------------------------------------------------------------------------- */

.lesson-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-8);
}

.lesson {
    padding-left: var(--sp-8);
    border-left: 2px solid var(--border);
}

.lesson-number {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--accent);
    display: block;
    margin-bottom: var(--sp-2);
}

.lesson h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--sp-3);
}

.lesson p {
    color: var(--text-muted);
}

/* -----------------------------------------------------------------------------
   Up Next / Footer
   ----------------------------------------------------------------------------- */

.upnext-grid {
    display: grid;
    gap: var(--sp-4);
}

.upnext-item {
    padding: var(--sp-4);
    background: var(--bg-alt);
    border-radius: 6px;
}

.upnext-name {
    font-weight: 500;
    display: block;
    margin-bottom: var(--sp-1);
}

.upnext-status {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--accent);
    display: block;
    margin-bottom: var(--sp-2);
}

.upnext-item p {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Closing */
.scene-closing {
    text-align: center;
    padding: var(--sp-24) var(--sp-6);
}

.closing-lead {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-style: italic;
    margin-bottom: var(--sp-8);
}

.closing-text {
    max-width: 50ch;
    margin: 0 auto var(--sp-6);
    color: var(--text-muted);
}

.closing-coda {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-style: italic;
    color: var(--text);
    margin-top: var(--sp-8);
}

.closing-footer {
    margin-top: var(--sp-16);
    padding-top: var(--sp-8);
    border-top: 1px solid var(--border);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.footer-link {
    color: var(--accent);
}

.footer-divider {
    margin: 0 var(--sp-4);
}

/* -----------------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------------- */

@media (max-width: 768px) {
    :root {
        --text-hero: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
    }
    
    .scene {
        padding: var(--sp-16) var(--sp-4);
    }
    
    .stats-row {
        justify-content: center;
    }
    
    .arch-layer {
        flex-direction: column;
        align-items: center;
    }
    
    .trigger-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--sp-1);
    }
    
    .trigger-arrow {
        display: none;
    }
}

/* -----------------------------------------------------------------------------
   Code Copy Button
   ----------------------------------------------------------------------------- */

.terminal {
    position: relative;
}

.copy-button {
    position: absolute;
    top: 44px;
    right: var(--sp-4);
    background: transparent;
    border: 1px solid #444;
    color: #888;
    padding: var(--sp-1) var(--sp-2);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, color 0.2s, border-color 0.2s;
}

.terminal:hover .copy-button {
    opacity: 1;
}

.copy-button:hover {
    color: #d4d4d4;
    border-color: #666;
}

.copy-button:active {
    transform: scale(0.95);
}

.copy-button.copied {
    color: #28c840;
    border-color: #28c840;
}

/* -----------------------------------------------------------------------------
   Terminal Cursor Animation
   ----------------------------------------------------------------------------- */

.terminal-cursor {
    display: inline;
    color: var(--accent);
    font-weight: normal;
    animation: cursorBlink 1s step-end infinite;
    margin-left: 2px;
}

.terminal-cursor.typing {
    animation: none;
    opacity: 1;
}

.terminal-cursor.hidden {
    opacity: 0;
    transition: opacity 0.3s ease;
}

@keyframes cursorBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Output item processing state */
.output-item.processing .output-icon {
    animation: spinnerRotate 0.8s linear infinite;
}

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

/* -----------------------------------------------------------------------------
   Code Block Copy Button
   ----------------------------------------------------------------------------- */

.code-block {
    position: relative;
}

.code-copy-btn {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #888;
    padding: var(--sp-1) var(--sp-2);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

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

.code-copy-btn:hover {
    color: #fff;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.1);
}

.code-copy-btn:active {
    transform: scale(0.95);
}

.code-copy-btn.copied {
    color: #28c840;
    border-color: #28c840;
}

.code-copy-btn.copied svg {
    stroke: #28c840;
}

.code-copy-btn svg {
    transition: stroke 0.2s var(--ease);
}

/* -----------------------------------------------------------------------------
   Trigger Item Animations
   ----------------------------------------------------------------------------- */

.trigger-item {
    transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.trigger-item:hover {
    background: var(--bg-alt);
    transform: translateX(4px);
}

.trigger-arrow {
    transition: transform 0.2s var(--ease), color 0.2s var(--ease);
}

.trigger-action {
    transition: color 0.2s var(--ease);
}

/* -----------------------------------------------------------------------------
   Data Table Row Animations
   ----------------------------------------------------------------------------- */

.data-table tbody tr {
    transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.data-table tbody tr:hover {
    background: var(--bg-alt);
    transform: translateX(4px);
}

/* -----------------------------------------------------------------------------
   Stat Value Counter Animation
   ----------------------------------------------------------------------------- */

.stat-value {
    display: inline-block;
    transition: transform 0.3s var(--ease);
}

.stat:hover .stat-value {
    transform: scale(1.05);
}

/* -----------------------------------------------------------------------------
   Architecture Box Hover Effects
   ----------------------------------------------------------------------------- */

.arch-box {
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.arch-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    border-color: var(--accent);
}

.arch-box-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

/* -----------------------------------------------------------------------------
   Lesson Card Hover Effects
   ----------------------------------------------------------------------------- */

.lesson {
    transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.lesson:hover {
    border-color: var(--accent);
    transform: translateX(4px);
}

.lesson-number {
    transition: color 0.2s var(--ease);
}

.lesson:hover .lesson-number {
    color: var(--accent-bright, var(--accent));
}

/* -----------------------------------------------------------------------------
   Up Next Item Hover Effects
   ----------------------------------------------------------------------------- */

.upnext-item {
    transition: background 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.upnext-item:hover {
    background: var(--bg-code);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.upnext-name {
    transition: color 0.2s var(--ease);
}

.upnext-item:hover .upnext-name {
    color: var(--accent);
}

/* -----------------------------------------------------------------------------
   Safety Rule Hover Effects
   ----------------------------------------------------------------------------- */

.safety-rule {
    transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.safety-rule:hover {
    background: var(--bg-code);
    transform: translateX(4px);
}

/* -----------------------------------------------------------------------------
   Tier Badge Hover Effects
   ----------------------------------------------------------------------------- */

.tier {
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.tier:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* -----------------------------------------------------------------------------
   Callout Hover Effect
   ----------------------------------------------------------------------------- */

.callout {
    transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.callout:hover {
    border-color: var(--accent);
    transform: translateX(4px);
}

/* -----------------------------------------------------------------------------
   Terminal Result Animation
   ----------------------------------------------------------------------------- */

.terminal-result {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.terminal-result.visible {
    opacity: 1;
    transform: translateY(0);
}

/* -----------------------------------------------------------------------------
   Focus Visible (Accessibility)
   ----------------------------------------------------------------------------- */

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Improve link contrast in body text */
.content-block a {
    text-decoration: underline;
    text-decoration-color: var(--accent-dim);
    text-underline-offset: 2px;
}

.content-block a:hover {
    text-decoration-color: var(--accent);
}

/* -----------------------------------------------------------------------------
   Reduced Motion
   ----------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .reading-progress-bar {
        transition: none;
    }
}

/* -----------------------------------------------------------------------------
   Print Styles
   ----------------------------------------------------------------------------- */

@media print {
    /* Hide interactive elements */
    .skip-link,
    .reading-progress,
    .sticky-nav,
    .hook-scroll,
    .copy-button {
        display: none !important;
    }

    /* Reset colors for printing */
    :root {
        --bg: #fff;
        --bg-alt: #f5f5f5;
        --text: #000;
        --text-muted: #333;
        --text-faint: #666;
        --border: #ccc;
        --accent: #8a7040;
    }

    /* Better page breaks */
    .scene {
        page-break-inside: avoid;
        padding: 2rem 0;
    }

    .section-header {
        page-break-after: avoid;
    }

    .data-table,
    .arch-diagram,
    .terminal,
    blockquote {
        page-break-inside: avoid;
    }

    /* Full width for print */
    .scene-container,
    .hook-container {
        max-width: 100%;
    }

    /* Show URLs after links */
    .content-block a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }

    /* Remove animations and transforms */
    .scene {
        opacity: 1 !important;
        transform: none !important;
    }

    /* Adjust terminal for print */
    .terminal {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .terminal-chrome {
        background: #eee;
    }

    .terminal-screen {
        background: #f9f9f9;
        color: #333;
    }

    /* Footer for print */
    .closing-footer {
        border-top: 1px solid #ccc;
    }

    .closing-footer a::after {
        content: none;
    }
}