/* ==========================================================================
   VARIABLES & RESET
   ========================================================================== */

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

:root {
    /* Colors */
    --bg-color: #ffffff;
    --text-color: #111111;
    --text-muted: #666666;
    --text-light: #717171;
    --border-color: #e5e5e5;
    --bad-color: #9a3a3a;
    --good-color: #2d7a4f;
    --bubble-bg: #fafafa;
    --bubble-bg-good: #ffffff;
    --code-bg: #f5f5f5;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;

    /* Typography */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-md: 1.125rem;
    --text-lg: 1.25rem;
    --text-xl: 1.5rem;
    --text-2xl: 1.75rem;
    --text-3xl: 2.75rem;
    --text-4xl: 4rem;
}

/* ==========================================================================
   BASE TYPOGRAPHY & LAYOUT
   ========================================================================== */

/* Accessibility: visually hidden but accessible to screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    min-height: 100vh;
    font-size: 18px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-lg);
}

h1 {
    font-size: var(--text-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-color);
    letter-spacing: -0.03em;
}

h1 .brand {
    color: var(--text-color);
}

h1 .domain {
    color: var(--text-muted);
}

h1 .h1-tagline {
    font-size: 0.5em;
    font-weight: 400;
    color: var(--text-muted);
}

.intro {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.tagline {
    font-size: var(--text-xl);
    color: var(--text-muted);
    font-weight: 400;
    line-height: 1.6;
}

.tagline strong {
    color: var(--text-color);
    font-size: var(--text-2xl);
    font-weight: 600;
    display: block;
    margin-top: var(--spacing-xs);
}

h2 {
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

h3 {
    font-size: var(--text-md);
    font-weight: 600;
    color: var(--text-color);
}

section {
    margin-bottom: var(--spacing-3xl);
}


/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* Chat bubbles */
.chat-bubble {
    background-color: var(--bubble-bg);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.chat-bubble.bad {
    background-color: var(--bubble-bg);
    opacity: 0.7;
}

.chat-bubble.bad p {
    text-decoration: line-through;
    text-decoration-color: var(--text-light);
    color: var(--text-muted);
}

.chat-bubble.good {
    background-color: var(--bubble-bg-good);
    box-shadow: var(--shadow-md);
    opacity: 1;
}

.chat-bubble.good:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.chat-bubble p {
    margin: 0;
    font-size: var(--text-md);
}

.chat-bubble code {
    background-color: var(--code-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    border: 1px solid var(--border-color);
}


.good-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 1rem;
    font-style: italic;
}

/* Chat Comparison Section */
.chat-comparison {
    margin-bottom: var(--spacing-3xl);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.chat-scenario {
    background: var(--bubble-bg);
    border-radius: 16px;
    padding: var(--spacing-md);
    position: relative;
}

.scenario-label {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.bad-label {
    color: var(--bad-color);
}

.good-label {
    color: var(--good-color);
}

.chat-window {
    min-height: 200px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chat-message {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    max-width: 95%;
}

.chat-message.sent {
    flex-direction: row-reverse;
    margin-left: auto;
    text-align: right;
}

.chat-message.received {
    margin-right: auto;
}

.message-time {
    font-size: var(--text-xs);
    color: var(--text-light);
    flex-shrink: 0;
    margin-top: 0.35rem;
}

.message-text {
    background: var(--bg-color);
    padding: 0.625rem 1rem;
    border-radius: 12px;
    font-size: 0.95rem;
    line-height: 1.5;
    box-shadow: var(--shadow-sm);
}

.chat-message.sent .message-text {
    background: var(--text-color);
    color: var(--bg-color);
}

.chat-message.received .message-text {
    background: var(--bg-color);
    color: var(--text-color);
}

.message-text code {
    background: rgba(128, 128, 128, 0.2);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.85em;
}

.scenario-result {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: 1.25rem;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.bad-result {
    color: var(--bad-color);
}

.good-result {
    color: var(--good-color);
}

.result-icon {
    font-size: 1.1rem;
}

/* Phrases to Avoid */
.avoid-phrases {
    margin-bottom: var(--spacing-3xl);
}

.phrases-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    list-style: none;
    padding-left: 0;
}

.phrase-item {
    background: var(--bubble-bg);
    padding: 0.625rem 1.25rem;
    border-radius: 100px;
    font-size: 0.95rem;
    color: var(--text-muted);
    position: relative;
    text-decoration: line-through;
    text-decoration-color: var(--text-light);
}

/* Analogy Section */
.analogy-section {
    margin-bottom: var(--spacing-3xl);
}

.analogy-box {
    background: var(--bubble-bg);
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
}

.analogy-scenario {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.analogy-conversation {
    max-width: 280px;
    margin: 0 auto var(--spacing-lg);
    text-align: left;
}

.analogy-line {
    padding: var(--spacing-xs) 0;
    font-size: 1.1rem;
}

.analogy-line.you {
    color: var(--text-color);
}

.analogy-line.them {
    color: var(--text-muted);
}

.analogy-line.waiting {
    color: var(--text-light);
    font-style: italic;
}

.analogy-conclusion {
    font-size: 1.1rem;
    color: var(--text-color);
    font-weight: 500;
}

/* Explanation section */
.explanation {
    margin-top: var(--spacing-3xl);
}

.reason {
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    margin-bottom: 0;
}

.reason:last-child {
    border-bottom: none;
}

.reason h3 {
    color: var(--text-color);
    font-size: var(--text-lg);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.reason p {
    color: var(--text-muted);
    margin: 0;
    line-height: 1.8;
}

/* XY Problem Section */
.xy-problem {
    margin-bottom: var(--spacing-3xl);
}

.xy-intro {
    font-size: var(--text-md);
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.xy-explanation {
    background: var(--bubble-bg);
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.xy-explanation h3 {
    margin-bottom: var(--spacing-sm);
}

.xy-explanation ul {
    list-style: none;
}

.xy-explanation li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.xy-explanation li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--good-color);
}

/* Show Your Work Section */
.show-work {
    margin-bottom: var(--spacing-3xl);
}

.show-work-intro {
    font-size: var(--text-md);
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.show-work-explanation {
    background: var(--bubble-bg);
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.show-work-explanation h3 {
    margin-bottom: var(--spacing-sm);
}

.show-work-explanation ul {
    list-style: none;
}

.show-work-explanation li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.show-work-explanation li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--good-color);
}

/* FAQ Section */
.faq {
    margin-top: var(--spacing-3xl);
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item summary {
    padding: var(--spacing-md) 0;
    cursor: pointer;
    list-style: none;
    position: relative;
    color: var(--text-color);
    transition: color 0.2s ease;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: var(--text-xl);
    font-weight: 300;
    transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
    content: "\2212";
}

.faq-item summary:hover {
    color: var(--text-muted);
}

.faq-item p {
    padding: 0 0 var(--spacing-md) 0;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.8;
}

/* Summary section */
.summary {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--bubble-bg);
    border-radius: 16px;
    margin-top: var(--spacing-3xl);
}

.summary p {
    margin-bottom: var(--spacing-sm);
    font-size: var(--text-lg);
    color: var(--text-muted);
}

.summary p:last-child {
    margin-bottom: 0;
    color: var(--text-color);
    font-size: var(--text-xl);
    font-weight: 600;
}

/* Recent Articles Section */
.recent-articles {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--border-color);
}

.recent-articles h2 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

.recent-articles-grid {
    display: grid;
    gap: var(--spacing-md);
}

.recent-article-card {
    padding: var(--spacing-md);
    background: var(--bubble-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.recent-article-card:hover {
    border-color: var(--text-muted);
    box-shadow: var(--shadow-sm);
}

.recent-article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    font-size: var(--text-sm);
    color: var(--text-light);
}

.recent-article-source {
    font-weight: 500;
    color: var(--text-muted);
}

.recent-article-card h3 {
    font-size: var(--text-base);
    font-weight: 500;
    line-height: 1.4;
    margin: 0;
}

.recent-article-card h3 a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.recent-article-card h3 a:hover {
    color: var(--good-color);
}

.view-all-link {
    display: inline-block;
    margin-top: var(--spacing-lg);
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.view-all-link:hover {
    color: var(--good-color);
}

.no-recent-articles {
    color: var(--text-muted);
    font-style: italic;
}

/* Footer */
footer {
    margin-top: var(--spacing-4xl);
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 0.75rem;
}

footer .copyright {
    margin-top: var(--spacing-md);
}

footer a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

footer a:focus-visible {
    outline: 2px solid var(--text-color);
    outline-offset: 2px;
}

/* ==========================================================================
   ACCESSIBILITY & UTILITIES
   ========================================================================== */

/* Focus styles for accessibility - only show for keyboard navigation */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--text-color);
    outline-offset: 2px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible),
summary:focus:not(:focus-visible) {
    outline: none;
}

/* Selection color */
::selection {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* ==========================================================================
   SITE HEADER (Main Page)
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-lg);
}

.site-nav {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.site-nav .nav-brand {
    font-size: var(--text-xl);
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.site-nav .nav-brand .brand {
    color: var(--text-color);
}

.site-nav .nav-brand .domain {
    color: var(--text-muted);
}

.site-nav .nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    transition: color 0.2s ease, background-color 0.2s ease;
}

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

/* ==========================================================================
   BLOG COMPONENTS
   ========================================================================== */

/* Blog Header & Navigation */
.blog-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-lg);
}

.blog-nav {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.nav-brand {
    font-size: var(--text-xl);
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-brand .brand {
    color: var(--text-color);
}

.nav-brand .domain {
    color: var(--text-muted);
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    transition: color 0.2s ease, background-color 0.2s ease;
}

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

.nav-link-active {
    color: var(--text-color);
    background-color: var(--bubble-bg);
}

/* Blog Container */
.blog-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
    min-height: calc(100vh - 200px);
}

/* Blog Index */
.blog-intro {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.blog-intro h1 {
    font-size: var(--text-3xl);
    margin-bottom: var(--spacing-md);
}

.blog-description {
    font-size: var(--text-md);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    line-height: 1.7;
}

.rss-link {
    margin-top: var(--spacing-md);
}

.rss-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.rss-button:hover {
    color: var(--text-color);
    border-color: var(--text-muted);
    background-color: var(--bubble-bg);
}

.rss-button svg {
    flex-shrink: 0;
}

/* Article Cards (Index List) */
.articles-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.article-card {
    background: var(--bubble-bg);
    border-radius: 16px;
    padding: var(--spacing-lg);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.article-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--text-light);
}

.article-source {
    font-weight: 500;
    color: var(--text-muted);
}

.article-card-meta time::before {
    content: "\2022";
    margin-right: var(--spacing-sm);
}

.article-card-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    text-transform: none;
    letter-spacing: normal;
    color: var(--text-color);
}

.article-card-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-card-title a:hover {
    color: var(--text-muted);
}

.article-card-excerpt {
    color: var(--text-muted);
    font-size: var(--text-base);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.read-more {
    color: var(--good-color);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    transition: color 0.2s ease;
}

.read-more:hover {
    color: var(--text-color);
}

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

/* Blog Article Page */
.blog-article {
    max-width: 100%;
}

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

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

.article-date::before {
    content: "\2022";
    margin-right: var(--spacing-sm);
}

.blog-article h1 {
    font-size: var(--text-3xl);
    text-align: left;
    margin-bottom: 0;
}

/* Article Content */
.article-content {
    font-size: var(--text-md);
    line-height: 1.8;
}

.article-content h2 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
    text-transform: none;
    letter-spacing: normal;
}

.article-content h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article-content p {
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
}

.article-content a {
    color: var(--good-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--text-muted);
}

.article-content li {
    margin-bottom: var(--spacing-xs);
}

.article-content blockquote {
    border-left: 3px solid var(--good-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--text-muted);
}

.article-content pre {
    background: var(--code-bg);
    border-radius: 8px;
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    line-height: 1.5;
}

.article-content code {
    background: var(--code-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
}

.article-content pre code {
    background: none;
    padding: 0;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
}

/* Attribution Box */
.attribution-box {
    background: var(--bubble-bg);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    border-left: 3px solid var(--good-color);
}

.attribution-box p {
    margin: 0 0 var(--spacing-xs);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.attribution-box p:last-child {
    margin-bottom: 0;
}

.attribution-box a {
    color: var(--good-color);
    text-decoration: none;
    font-weight: 500;
}

.attribution-box a:hover {
    text-decoration: underline;
}

.ai-notice {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--good-color);
    color: var(--bg-color);
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 0.05em;
}

.attribution-copyright {
    font-size: var(--text-xs) !important;
    color: var(--text-light) !important;
    margin-top: var(--spacing-sm) !important;
}

/* Breadcrumb Navigation */
.breadcrumb {
    background: var(--bubble-bg);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-lg);
}

.breadcrumb-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

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

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

/* Article Reading Time */
.article-reading-time {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--text-light);
}

.article-reading-time svg {
    opacity: 0.7;
}

/* Enhanced Attribution Box */
.attribution-box {
    background: var(--bubble-bg);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    border-left: 4px solid var(--good-color);
}

.attribution-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.attribution-title {
    font-weight: 600;
    color: var(--text-color);
}

.attribution-box p {
    margin: 0 0 var(--spacing-xs);
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: 1.6;
}

.attribution-box p:last-child {
    margin-bottom: 0;
}

.attribution-source a {
    color: var(--good-color);
    text-decoration: none;
    font-weight: 500;
}

.attribution-source a:hover {
    text-decoration: underline;
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--good-color), #4ade80);
    color: var(--bg-color);
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.attribution-copyright {
    font-size: var(--text-xs) !important;
    color: var(--text-light) !important;
    margin-top: var(--spacing-sm) !important;
}

/* Share Buttons */
.share-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background: var(--bubble-bg);
    border-radius: var(--radius-md, 8px);
}

.share-label {
    font-size: var(--text-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    background: var(--bg-color);
}

.share-btn:hover {
    color: var(--text-color);
    border-color: var(--text-muted);
    transform: translateY(-1px);
}

.share-twitter:hover {
    background: rgba(29, 161, 242, 0.1);
    border-color: #1da1f2;
    color: #1da1f2;
}

.share-linkedin:hover {
    background: rgba(10, 102, 194, 0.1);
    border-color: #0a66c2;
    color: #0a66c2;
}

.share-telegram:hover {
    background: rgba(0, 136, 204, 0.1);
    border-color: #0088cc;
    color: #0088cc;
}

/* Article Navigation */
.article-nav {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-to-list,
.view-original {
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    transition: color 0.2s ease;
}

.back-to-list:hover,
.view-original:hover {
    color: var(--text-color);
}

.view-original {
    color: var(--good-color);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

/* Fade-in animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation order variables for staggered entrance */
.intro { --animation-order: 1; }
.chat-comparison { --animation-order: 2; }
.avoid-phrases { --animation-order: 3; }
.good-examples { --animation-order: 4; }
.explanation { --animation-order: 5; }
.xy-problem { --animation-order: 6; }
.show-work { --animation-order: 7; }
.analogy-section { --animation-order: 8; }
.faq { --animation-order: 9; }
.summary { --animation-order: 10; }

.intro,
.chat-comparison,
.avoid-phrases,
.good-examples,
.explanation,
.xy-problem,
.show-work,
.analogy-section,
.faq,
.summary {
    animation: fadeInUp 0.6s ease-out both;
    animation-delay: calc(var(--animation-order, 0) * 0.1s);
}

/* ==========================================================================
   MEDIA QUERIES
   ========================================================================== */

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .chat-bubble {
        border: 1px solid #ccc;
        background: #f9f9f9;
    }

    .summary {
        background: #f0f0f0;
    }
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 4rem 1.5rem;
    }

    h1 {
        font-size: 2.75rem;
    }

    .tagline {
        font-size: 1.25rem;
    }

    .tagline strong {
        font-size: 1.4rem;
    }

    section {
        margin-bottom: 4rem;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .chat-scenario {
        padding: 1.25rem;
    }

    .chat-window {
        min-height: auto;
    }

    .chat-message {
        max-width: 100%;
    }

    .message-text {
        font-size: 0.9rem;
        padding: 0.5rem 0.875rem;
    }

    .phrases-grid {
        gap: 0.5rem;
    }

    .phrase-item {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .analogy-box {
        padding: 1.5rem;
    }

    .analogy-conversation {
        max-width: 100%;
    }

    .explanation {
        margin-top: 4rem;
    }

    .faq {
        margin-top: 4rem;
    }

    .summary {
        margin-top: 4rem;
        padding: 3rem 1.5rem;
    }

    .faq-item summary {
        padding-right: 2rem;
    }

    /* Blog responsive styles */
    .blog-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .blog-container {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .blog-intro h1 {
        font-size: var(--text-2xl);
    }

    .blog-article h1 {
        font-size: var(--text-2xl);
    }

    .article-card {
        padding: var(--spacing-md);
    }

    .article-card-title {
        font-size: var(--text-lg);
    }

    .article-content {
        font-size: var(--text-base);
    }

    .article-content h2 {
        font-size: var(--text-lg);
    }

    .article-content h3 {
        font-size: var(--text-md);
    }

    .attribution-box {
        padding: var(--spacing-md);
    }

    .breadcrumb {
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .breadcrumb-container {
        font-size: var(--text-xs);
    }

    .article-meta {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .share-buttons {
        flex-wrap: wrap;
    }

    .article-nav {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0a0a0a;
        --text-color: #fafafa;
        --text-muted: #a0a0a0;
        --text-light: #8e8e8e;
        --border-color: #222222;
        --bad-color: #e57373;
        --good-color: #66bb6a;
        --bubble-bg: #141414;
        --bubble-bg-good: #1a1a1a;
        --code-bg: #1f1f1f;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    }

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