/* =============================================================================
   THE LOGIC LADDER - Main Stylesheet
   5 Dark Themes | Responsive Design | Windows 7/XP Inspired Aesthetic
   ============================================================================= */

/* =============================================================================
   CSS VARIABLES - Theme System
   ============================================================================= */

:root {
    /* Crimson Logic (Default Theme) */
    --color-bg: #1a1a1a;
    --color-surface: #2a2a2a;
    --color-surface-elevated: #333333;
    --color-primary: #c91530;
    --color-primary-hover: #a01228;
    --color-primary-light: #e63950;
    --color-secondary: #2080c1;
    --color-secondary-hover: #1a6699;
    --color-accent: #e68161;
    --color-text: #e0e0e0;
    --color-text-muted: #999999;
    --color-text-bright: #ffffff;
    --color-border: #404040;
    --color-border-light: #505050;
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-error: #f44336;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-family-mono: 'Consolas', 'Courier New', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border radius */
    --radius-sm: 3px;
    --radius: 4px;
    --radius-lg: 8px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 8px 16px rgba(0, 0, 0, 0.6);

    /* Transitions */
    --transition-fast: 100ms ease-in-out;
    --transition: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;

    /* Layout */
    --max-width: 1200px;
    --max-width-content: 800px;
    --header-height: 80px;
}

/* =============================================================================
   THEME: Neon Dusk
   ============================================================================= */

[data-theme="neon"] {
    --color-bg: #0f1a2e;
    --color-surface: #162037;
    --color-surface-elevated: #1d2940;
    --color-primary: #ff1744;
    --color-primary-hover: #d50032;
    --color-primary-light: #ff5a6e;
    --color-secondary: #00e5ff;
    --color-secondary-hover: #00b8d4;
    --color-accent: #e60fac;
    --color-text: #e8eaed;
    --color-text-muted: #8899aa;
    --color-text-bright: #ffffff;
    --color-border: #2d3f5a;
    --color-border-light: #3d5070;
}

/* =============================================================================
   THEME: Rust & Teal
   ============================================================================= */

[data-theme="rust"] {
    --color-bg: #2a2520;
    --color-surface: #362f28;
    --color-surface-elevated: #423930;
    --color-primary: #a6502f;
    --color-primary-hover: #8a4226;
    --color-primary-light: #c06040;
    --color-secondary: #3db89f;
    --color-secondary-hover: #329880;
    --color-accent: #c16a47;
    --color-text: #e5ddd5;
    --color-text-muted: #a09080;
    --color-text-bright: #f5efe8;
    --color-border: #504540;
    --color-border-light: #605550;
}

/* =============================================================================
   THEME: Electric Void
   ============================================================================= */

[data-theme="electric"] {
    --color-bg: #000000;
    --color-surface: #0a0a0a;
    --color-surface-elevated: #141414;
    --color-primary: #ff0033;
    --color-primary-hover: #cc0029;
    --color-primary-light: #ff3366;
    --color-secondary: #00ffff;
    --color-secondary-hover: #00cccc;
    --color-accent: #ff00ff;
    --color-text: #f0f0f0;
    --color-text-muted: #808080;
    --color-text-bright: #ffffff;
    --color-border: #333333;
    --color-border-light: #444444;
}

/* =============================================================================
   THEME: Ember Slate
   ============================================================================= */

[data-theme="ember"] {
    --color-bg: #3a3f47;
    --color-surface: #454b54;
    --color-surface-elevated: #505761;
    --color-primary: #cc6b3a;
    --color-primary-hover: #b05a30;
    --color-primary-light: #e07a45;
    --color-secondary: #4da6a6;
    --color-secondary-hover: #3d8888;
    --color-accent: #9966cc;
    --color-text: #e8e8e8;
    --color-text-muted: #a0a5ad;
    --color-text-bright: #ffffff;
    --color-border: #5a6068;
    --color-border-light: #6a7078;
}

/* =============================================================================
   RESET & BASE STYLES
   ============================================================================= */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

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

ul, ol {
    padding-left: var(--spacing-lg);
}

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

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    color: var(--color-text-bright);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
}

blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--color-text-muted);
}

code {
    font-family: var(--font-family-mono);
    background: var(--color-surface-elevated);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

pre {
    font-family: var(--font-family-mono);
    background: var(--color-surface-elevated);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

pre code {
    background: none;
    padding: 0;
}

/* =============================================================================
   LAYOUT
   ============================================================================= */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-md);
}

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

/* =============================================================================
   HEADER
   ============================================================================= */

.header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header__content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo:hover {
    color: var(--color-primary-light);
    text-decoration: none;
}

.logo__icon {
    font-size: 1.5em;
}

.tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

/* =============================================================================
   SEARCH FORM
   ============================================================================= */

.search-form {
    display: flex;
    gap: var(--spacing-sm);
    flex: 1;
    max-width: 400px;
}

.search-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(201, 21, 48, 0.2);
}

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

/* =============================================================================
   BUTTONS
   ============================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    font-weight: 500;
    color: var(--color-text-bright);
    background: var(--color-primary);
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition-fast);
    text-decoration: none;
}

.btn:hover {
    background: var(--color-primary-hover);
    text-decoration: none;
    color: var(--color-text-bright);
}

.btn:active {
    transform: translateY(1px);
}

.btn--secondary {
    background: var(--color-secondary);
}

.btn--secondary:hover {
    background: var(--color-secondary-hover);
}

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

.btn--outline:hover {
    background: var(--color-primary);
    color: var(--color-text-bright);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text);
}

.btn--ghost:hover {
    background: var(--color-surface-elevated);
}

.btn--small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
}

/* =============================================================================
   FILTER BUTTONS
   ============================================================================= */

.filter-bar {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

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

.filter-btn.active {
    color: var(--color-text-bright);
    background: var(--color-primary);
    border-color: var(--color-primary);
}

/* =============================================================================
   MAIN CONTENT AREA
   ============================================================================= */

.main {
    padding: 10px 0;
    min-height: calc(100vh - var(--header-height) - 100px);
}

/* =============================================================================
   HERO / ABOUT SECTION
   ============================================================================= */

.hero {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero__title {
    font-size: var(--font-size-4xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hero__tagline {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.about-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.about-section__title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-secondary);
}

.about-section__content {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--color-text);
}

/* =============================================================================
   SOCIAL LINKS
   ============================================================================= */

.social-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
    padding: 12px 0;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    transition: all var(--transition);
}

.social-link:hover {
    background: var(--color-surface-elevated);
    border-color: var(--color-primary);
    color: var(--color-primary);
    text-decoration: none;
}

.social-link__icon {
    font-size: 1.2em;
}

/* =============================================================================
   ARTICLE CARDS (Homepage)
   ============================================================================= */

.articles-section {
    margin-top: 10px;
}

.articles-section__title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

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

.article-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition);
}

.article-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.article-card__category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.article-card__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.article-card__title a {
    color: var(--color-text-bright);
}

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

.article-card__excerpt {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.article-card__meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

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

/* =============================================================================
   ARTICLE PAGE
   ============================================================================= */

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

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

.article__title {
    font-size: var(--font-size-4xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.article__meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.article__date,
.article__category {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.article__category {
    color: var(--color-secondary);
    font-weight: 500;
}

/* =============================================================================
   ARTICLE BODY
   ============================================================================= */

.article__body {
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

.article__body h2 {
    font-size: var(--font-size-2xl);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-secondary);
}

.article__body h3 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.article__body p {
    margin-bottom: var(--spacing-lg);
}

.article__body ul,
.article__body ol {
    margin-bottom: var(--spacing-lg);
}

.article__body li {
    margin-bottom: var(--spacing-sm);
}

.article__body em {
    color: var(--color-text-muted);
}

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

/* =============================================================================
   LADDER LOGIC SECTION (Special Article Formatting)
   ============================================================================= */

.ladder-logic {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.ladder-logic h2 {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.ladder-logic h2:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

/* =============================================================================
   VIDEO SECTION
   ============================================================================= */

.article__video {
    margin: var(--spacing-2xl) 0;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article__video iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
}

/* =============================================================================
   SLIDESHOW
   ============================================================================= */

.slideshow-section {
    margin: 0 0 var(--spacing-2xl) 0;
}

.slideshow-section h2 {
    margin-bottom: var(--spacing-lg);
}

.slideshow {
    position: relative;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slideshow__image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.slideshow__image.active {
    opacity: 1;
}

.slideshow__counter {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
}

.slideshow__controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    padding: var(--spacing-md);
    background: var(--color-surface-elevated);
}

.slideshow__controls .btn {
    width: 50px;
    height: 50px;
    min-width: unset;
    padding: 0;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    border: 2px solid var(--color-border);
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-lg);
    color: #222;
}

.slideshow__controls .btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
    color: #222;
}

/* =============================================================================
   LINKS SECTION
   ============================================================================= */

.links-section {
    margin: var(--spacing-2xl) 0;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.links-section h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-secondary);
}

.links-list {
    list-style: none;
    padding: 0;
}

.links-list__item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition);
}

.links-list__item:hover {
    background: var(--color-surface);
}

.links-list__item:last-child {
    border-bottom: none;
}

.links-list__link {
    color: var(--color-primary);
    font-size: var(--font-size-base);
    word-break: break-word;
}

.links-list__link:hover {
    color: var(--color-primary-light);
}

/* =============================================================================
   THEME SWITCHER
   ============================================================================= */

.theme-switcher {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
}

.theme-button {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    border: 2px solid var(--color-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--color-text-bright);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition);
}

.theme-button:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.theme-menu {
    position: absolute;
    bottom: calc(100% + var(--spacing-sm));
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    min-width: 180px;
    box-shadow: var(--shadow-xl);
}

.theme-menu.hidden {
    display: none;
}

.theme-option {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: background var(--transition);
}

.theme-option:hover {
    background: var(--color-surface-elevated);
}

.theme-option.active {
    background: var(--color-primary);
    color: var(--color-text-bright);
}

.theme-option__swatch {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
}

.theme-option--crimson .theme-option__swatch { background: #c91530; }
.theme-option--neon .theme-option__swatch { background: #ff1744; }
.theme-option--rust .theme-option__swatch { background: #a6502f; }
.theme-option--electric .theme-option__swatch { background: #ff0033; }
.theme-option--ember .theme-option__swatch { background: #cc6b3a; }

/* =============================================================================
   FOOTER
   ============================================================================= */

.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: var(--spacing-3xl);
    text-align: center;
}

.site-footer__content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.site-footer__copyright {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.site-footer__email {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.site-footer__email a {
    color: var(--color-secondary);
}

/* =============================================================================
   SEARCH RESULTS
   ============================================================================= */

.search-results {
    margin-top: var(--spacing-lg);
}

.search-results__header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.search-results__query {
    color: var(--color-primary);
}

.search-results__empty {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
    color: var(--color-text-muted);
}

.search-results__empty h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

/* =============================================================================
   UTILITIES
   ============================================================================= */

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.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;
}

/* =============================================================================
   RESPONSIVE DESIGN
   ============================================================================= */

/* Tablet (768px and up) */
@media (min-width: 768px) {
    .header__content {
        flex-wrap: nowrap;
    }

    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero__title {
        font-size: calc(var(--font-size-4xl) * 1.2);
    }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    .container {
        padding: var(--spacing-lg);
    }

    .hero {
        padding: var(--spacing-3xl) var(--spacing-xl);
    }
}

/* Mobile (max 767px) */
@media (max-width: 767px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.5rem;
    }

    .header__content {
        flex-direction: column;
        text-align: center;
    }

    .logo {
        justify-content: center;
    }

    .search-form {
        max-width: 100%;
        width: 100%;
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero__title {
        font-size: var(--font-size-3xl);
    }

    .article__title {
        font-size: var(--font-size-2xl);
    }

    .article__meta {
        flex-direction: row;
        gap: var(--spacing-md);
    }

    .social-links {
        flex-direction: column;
        align-items: stretch;
    }

    .social-link {
        justify-content: center;
    }

    .filter-bar {
        justify-content: center;
    }

    .slideshow__controls {
        flex-direction: row;
    }

    .theme-switcher {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }

    .theme-button {
        width: 45px;
        height: 45px;
    }

    .about-section {
        padding: var(--spacing-lg);
    }

    .ladder-logic {
        padding: var(--spacing-lg);
    }
}

/* Small mobile (max 480px) */
@media (max-width: 480px) {
    :root {
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }

    .container {
        padding: var(--spacing-sm);
    }

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

/* =============================================================================
   PRINT STYLES
   ============================================================================= */

@media print {
    .header,
    .theme-switcher,
    .slideshow__controls,
    .search-form,
    .social-links {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .article__title,
    h1, h2, h3 {
        color: black;
    }

    a {
        color: black;
        text-decoration: underline;
    }

    .article {
        max-width: 100%;
    }
}