/* ==========================================================================
   WhiteScreen.wiki - Main Stylesheet
   A calm, minimalist design system for focus and clarity
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-charcoal: #333333;
    --color-gray-light: #f2f2f2;
    --color-gray-medium: #e0e0e0;
    --color-gray-dark: #666666;
    --color-accent: #007aff;
    --color-accent-hover: #0056b3;

    /* Screen Colors */
    --screen-white: #ffffff;
    --screen-blue: #1e90ff;
    --screen-green: #32cd32;
    --screen-black: #000000;
    --screen-red: #ff4b4b;
    --screen-yellow: #ffe600;
    --screen-pink: #ffb6c1;
    --screen-cream: #fffdd0;
    --screen-gray: #f2f2f2;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --line-height: 1.6;
    --line-height-tight: 1.3;

    /* 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;
    --space-4xl: 5rem;
    --space-section: 5rem;

    /* Layout */
    --max-width: 1100px;
    --header-height: 70px;

    /* Borders & Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height);
    color: var(--color-charcoal);
    background-color: var(--color-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    flex: 1;
}

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

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

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

ul, ol {
    list-style: none;
}

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

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: var(--line-height-tight);
    color: var(--color-charcoal);
}

h1 {
    font-size: var(--font-size-4xl);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--font-size-3xl);
    letter-spacing: -0.01em;
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-lg);
}

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

p:last-child {
    margin-bottom: 0;
}

strong {
    font-weight: 600;
}

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

.section-intro {
    font-size: var(--font-size-lg);
    color: var(--color-gray-dark);
    max-width: 700px;
    margin-bottom: var(--space-2xl);
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-medium);
    height: var(--header-height);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-charcoal);
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
    color: var(--color-charcoal);
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.logo-wiki {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a {
    color: var(--color-charcoal);
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--color-accent);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    z-index: 101;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-charcoal);
    transition: all var(--transition-base);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    text-decoration: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-charcoal);
    border: 2px solid var(--color-charcoal);
}

.btn-outline:hover {
    background-color: var(--color-charcoal);
    color: var(--color-white);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

.btn-small {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
}

.btn-dark {
    background-color: var(--color-charcoal);
    color: var(--color-white);
}

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

.btn-full {
    width: 100%;
}

/* --------------------------------------------------------------------------
   Fullscreen Overlay
   -------------------------------------------------------------------------- */
.fullscreen-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--color-white);
    transition: background-color var(--transition-slow);
}

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

.exit-fullscreen-btn {
    position: absolute;
    top: var(--space-xl);
    right: var(--space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: rgba(0, 0, 0, 0.3);
    transition: color var(--transition-base), opacity var(--transition-base);
    opacity: 0.5;
}

.exit-fullscreen-btn:hover {
    color: rgba(0, 0, 0, 0.6);
    opacity: 1;
}

.exit-fullscreen-btn span {
    font-size: 2.5rem;
    line-height: 1;
}

.exit-fullscreen-btn small {
    font-size: var(--font-size-sm);
}

.fullscreen-overlay.dark-mode .exit-fullscreen-btn {
    color: rgba(255, 255, 255, 0.3);
}

.fullscreen-overlay.dark-mode .exit-fullscreen-btn:hover {
    color: rgba(255, 255, 255, 0.6);
}

.fullscreen-tip {
    position: absolute;
    bottom: var(--space-2xl);
    color: rgba(0, 0, 0, 0.2);
    font-size: var(--font-size-lg);
    text-align: center;
    transition: color var(--transition-base);
}

.fullscreen-overlay.dark-mode .fullscreen-tip {
    color: rgba(255, 255, 255, 0.2);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    padding: var(--space-4xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-light) 100%);
}

.hero h1 {
    max-width: 800px;
    margin: 0 auto var(--space-lg);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-dark);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
}

.hero-cta {
    margin-bottom: var(--space-2xl);
}

.color-quick-access {
    margin-bottom: var(--space-2xl);
}

.quick-access-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    margin-bottom: var(--space-md);
}

.color-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.color-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-charcoal);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.color-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
    color: var(--color-charcoal);
}

.color-btn-dark {
    color: var(--color-white);
}

.color-btn-dark:hover {
    color: var(--color-white);
}

.hero-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    font-style: italic;
}

/* --------------------------------------------------------------------------
   How It Works / Features Section
   -------------------------------------------------------------------------- */
.how-it-works {
    padding: var(--space-section) 0;
}

.how-it-works h2 {
    text-align: center;
    margin-bottom: var(--space-md);
}

.how-it-works .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    text-align: center;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    background-color: var(--color-gray-light);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--color-gray-dark);
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Color Benefits Section
   -------------------------------------------------------------------------- */
.color-benefits {
    padding: var(--space-section) 0;
    background-color: var(--color-gray-light);
}

.color-benefits h2 {
    text-align: center;
    margin-bottom: var(--space-md);
}

.color-benefits .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.benefits-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    max-width: 700px;
    margin: 0 auto var(--space-2xl);
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.benefit-swatch {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
}

.benefit-content h3 {
    margin-bottom: var(--space-xs);
    font-size: var(--font-size-lg);
}

.benefit-content p {
    color: var(--color-gray-dark);
    font-size: var(--font-size-sm);
}

.benefits-cta {
    text-align: center;
}

/* --------------------------------------------------------------------------
   Focus Tips Section
   -------------------------------------------------------------------------- */
.focus-tips {
    padding: var(--space-section) 0;
}

.focus-tips h2 {
    text-align: center;
    margin-bottom: var(--space-md);
}

.focus-tips .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.tip-card {
    padding: var(--space-xl);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--radius-lg);
    position: relative;
}

.tip-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.tip-card h3 {
    margin-bottom: var(--space-sm);
}

.tip-card p {
    color: var(--color-gray-dark);
    font-size: var(--font-size-sm);
}

.tips-cta {
    text-align: center;
}

.link-arrow {
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Testimonials Section
   -------------------------------------------------------------------------- */
.testimonials {
    padding: var(--space-section) 0;
    background-color: var(--color-gray-light);
}

.testimonials h2 {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

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

.testimonial {
    padding: var(--space-xl);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.testimonial p {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--color-charcoal);
    margin-bottom: var(--space-md);
}

.testimonial cite {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    font-style: normal;
}

/* --------------------------------------------------------------------------
   Final CTA Section
   -------------------------------------------------------------------------- */
.final-cta,
.about-cta,
.faq-cta,
.learn-more-cta {
    padding: var(--space-section) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-light) 100%);
}

.final-cta h2,
.about-cta h2,
.faq-cta h2,
.learn-more-cta h2 {
    margin-bottom: var(--space-md);
}

.final-cta p,
.about-cta p,
.faq-cta p,
.learn-more-cta p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-dark);
    max-width: 500px;
    margin: 0 auto var(--space-xl);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

/* --------------------------------------------------------------------------
   Page Header (Interior Pages)
   -------------------------------------------------------------------------- */
.page-header {
    padding: var(--space-3xl) 0 var(--space-2xl);
    text-align: center;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-light) 100%);
}

.page-header h1 {
    margin-bottom: var(--space-md);
}

.page-intro {
    font-size: var(--font-size-lg);
    color: var(--color-gray-dark);
    max-width: 600px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Color Grid (Colors Page)
   -------------------------------------------------------------------------- */
.color-grid-section {
    padding: var(--space-2xl) 0 var(--space-section);
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-lg);
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.color-card {
    aspect-ratio: 1;
}

.color-swatch {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    box-shadow: var(--shadow-md);
}

.color-swatch:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.color-label {
    font-weight: 600;
    color: var(--color-charcoal);
    font-size: var(--font-size-lg);
}

.color-label-light {
    color: var(--color-white);
}

.color-instruction {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

/* --------------------------------------------------------------------------
   Color Insights (Colors Page)
   -------------------------------------------------------------------------- */
.color-insights {
    padding: var(--space-section) 0;
    background-color: var(--color-gray-light);
}

.color-insights h2 {
    text-align: center;
    margin-bottom: var(--space-md);
}

.color-insights .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.insights-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
}

.insight-item {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-xl);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.insight-swatch {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
}

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

.insight-content p {
    color: var(--color-gray-dark);
    margin-bottom: var(--space-md);
}

.insight-content .btn {
    margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   About Page Sections
   -------------------------------------------------------------------------- */
.about-section {
    padding: var(--space-section) 0;
}

.about-section:nth-child(odd) {
    background-color: var(--color-gray-light);
}

.content-block {
    max-width: 700px;
    margin: 0 auto;
}

.content-block h2 {
    margin-bottom: var(--space-lg);
}

.content-block h3 {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

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

.content-list {
    margin: var(--space-lg) 0;
    padding-left: var(--space-lg);
}

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

.content-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
}

/* Founder Note */
.founder-note {
    background-color: var(--color-white);
}

.founder-quote {
    padding: var(--space-xl);
    background-color: var(--color-gray-light);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.founder-quote p {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   FAQ Page
   -------------------------------------------------------------------------- */
.faq-section {
    padding: var(--space-2xl) 0 var(--space-section);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

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

.faq-item:first-child {
    border-top: 1px solid var(--color-gray-medium);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg) 0;
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-charcoal);
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-accent);
}

.faq-icon {
    flex-shrink: 0;
    font-size: var(--font-size-xl);
    font-weight: 400;
    transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding-bottom: var(--space-lg);
}

.faq-answer p {
    color: var(--color-gray-dark);
}

.faq-answer a {
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Contact Page
   -------------------------------------------------------------------------- */
.contact-section {
    padding: var(--space-2xl) 0 var(--space-section);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-form-wrapper {
    max-width: 600px;
}

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

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

.form-group label {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-charcoal);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
    background-color: var(--color-gray-light);
    border-radius: var(--radius-lg);
}

.success-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-lg);
    background-color: var(--screen-green);
    color: var(--color-white);
    font-size: var(--font-size-2xl);
    border-radius: var(--radius-full);
}

.form-success h3 {
    margin-bottom: var(--space-sm);
}

.form-success p {
    color: var(--color-gray-dark);
    margin-bottom: var(--space-xl);
}

/* Contact Sidebar */
.contact-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.sidebar-card {
    padding: var(--space-lg);
    background-color: var(--color-gray-light);
    border-radius: var(--radius-md);
}

.sidebar-card h3 {
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-lg);
}

.sidebar-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

.email-link {
    display: block;
    margin-top: var(--space-sm);
    font-weight: 600;
    word-break: break-word;
}

.quick-links {
    font-size: var(--font-size-sm);
}

.quick-links li {
    margin-bottom: var(--space-sm);
    color: var(--color-gray-dark);
}

.sidebar-quote blockquote {
    font-style: italic;
    color: var(--color-charcoal);
}

.sidebar-quote cite {
    display: block;
    margin-top: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    font-style: normal;
}

/* Contact Topics */
.contact-topics {
    padding: var(--space-section) 0;
    background-color: var(--color-gray-light);
}

.contact-topics h2 {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.topic-card {
    text-align: center;
    padding: var(--space-xl);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
}

.topic-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
}

.topic-card h3 {
    margin-bottom: var(--space-sm);
}

.topic-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background-color: var(--color-charcoal);
    color: var(--color-white);
    padding: var(--space-3xl) 0;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-2xl);
}

.footer-brand {
    flex-shrink: 0;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-white);
    font-weight: 600;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.footer-logo:hover {
    color: var(--color-white);
    opacity: 0.9;
}

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

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

.footer-tagline {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.footer-nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md) var(--space-xl);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-white);
}

.footer-meta {
    text-align: right;
}

.footer-meta p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-xs);
}

.sitemap-link {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.4);
}

.sitemap-link:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .contact-sidebar {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .sidebar-card {
        flex: 1;
        min-width: 200px;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.375rem;
        --space-section: 3.5rem;
    }

    /* Mobile Navigation */
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-white);
        padding: var(--space-lg);
        gap: 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: var(--space-md);
        border-bottom: 1px solid var(--color-gray-light);
    }

    .nav-links a::after {
        display: none;
    }

    /* Mobile Menu Toggle Animation */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Hero */
    .hero {
        padding: var(--space-2xl) 0;
    }

    .hero h1 {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .color-buttons {
        gap: var(--space-sm);
    }

    .color-btn {
        min-width: 70px;
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-sm);
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }

    /* Color Grid */
    .color-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-md);
    }

    /* Insights */
    .insight-item {
        flex-direction: column;
        gap: var(--space-md);
    }

    .insight-swatch {
        width: 60px;
        height: 60px;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-xl);
    }

    .footer-nav ul {
        justify-content: center;
    }

    .footer-meta {
        text-align: center;
    }

    /* Contact Sidebar */
    .contact-sidebar {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
    }

    .container {
        padding: 0 var(--space-md);
    }

    /* Features on smaller screens */
    .features-grid {
        grid-template-columns: 1fr;
    }

    /* Color Grid */
    .color-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Tips */
    .tips-grid {
        grid-template-columns: 1fr;
    }

    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    /* CTA Buttons Stack */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    /* Fullscreen */
    .exit-fullscreen-btn {
        top: var(--space-md);
        right: var(--space-md);
    }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.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;
}

/* --------------------------------------------------------------------------
   Animation & Transitions
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* --------------------------------------------------------------------------
   Enhanced Homepage Sections
   -------------------------------------------------------------------------- */

/* What Is Section */
.what-is-section {
    padding: var(--space-section) 0;
    background-color: var(--color-white);
}

.what-is-section h2 {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.content-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

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

.content-column h3 {
    margin-bottom: var(--space-md);
    color: var(--color-charcoal);
}

.use-cases-list {
    list-style: none;
    padding: 0;
}

.use-cases-list li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

.use-cases-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

.use-cases-list li strong {
    color: var(--color-charcoal);
}

/* Additional Features */
.additional-features {
    margin-top: var(--space-3xl);
    padding: var(--space-xl);
    background-color: var(--color-gray-light);
    border-radius: var(--radius-lg);
}

.additional-features h3 {
    text-align: center;
    margin-bottom: var(--space-xl);
}

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

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.feature-check {
    color: var(--screen-green);
    font-weight: bold;
    font-size: var(--font-size-lg);
}

/* Who Uses Section */
.who-uses {
    padding: var(--space-section) 0;
    background-color: var(--color-white);
}

.who-uses h2 {
    text-align: center;
    margin-bottom: var(--space-md);
}

.who-uses .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.user-card {
    padding: var(--space-xl);
    background-color: var(--color-gray-light);
    border-radius: var(--radius-lg);
    text-align: center;
}

.user-icon {
    font-size: var(--font-size-4xl);
    display: block;
    margin-bottom: var(--space-md);
}

.user-card h3 {
    margin-bottom: var(--space-sm);
}

.user-card p {
    color: var(--color-gray-dark);
    font-size: var(--font-size-sm);
}

/* CTA Note */
.cta-note {
    margin-top: var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

/* Enhanced Footer */
.footer-description {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    max-width: 250px;
    margin-top: var(--space-sm);
}

.footer-nav h4 {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-md);
}

.footer-nav ul {
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links {
    margin-top: var(--space-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
}

.footer-links a:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* Extended Tips Grid */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

/* Responsive for new sections */
@media (max-width: 768px) {
    .content-columns {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

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

    .features-list {
        grid-template-columns: 1fr;
    }
}

/* --------------------------------------------------------------------------
   Colors Page Enhanced Styles
   -------------------------------------------------------------------------- */

/* Quick Use Section */
.quick-use-section {
    padding: var(--space-xl) 0;
    background-color: var(--color-accent);
    color: var(--color-white);
    text-align: center;
}

.quick-use-section h2 {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.quick-use-section p {
    opacity: 0.9;
    margin-bottom: var(--space-lg);
}

.quick-color-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.quick-color-btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.quick-color-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* Color Detail Cards */
.color-detail-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-sm);
}

.color-detail-header {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.color-detail-swatch {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.color-detail-title h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-xs);
}

.color-detail-subtitle {
    color: var(--color-gray-dark);
    font-size: var(--font-size-lg);
}

.color-detail-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
}

.color-detail-description p {
    margin-bottom: var(--space-md);
}

.color-detail-uses h4 {
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-lg);
}

.color-detail-uses ul {
    list-style: none;
    padding: 0;
}

.color-detail-uses li {
    padding-left: var(--space-lg);
    position: relative;
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

.color-detail-uses li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

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

    .color-detail-header {
        flex-direction: column;
        text-align: center;
    }
}

/* --------------------------------------------------------------------------
   FAQ Enhanced Styles
   -------------------------------------------------------------------------- */

.faq-categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

.faq-category-btn {
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    transition: all var(--transition-base);
}

.faq-category-btn:hover,
.faq-category-btn.active {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.faq-answer ul {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.faq-answer li {
    margin-bottom: var(--space-sm);
    position: relative;
    padding-left: var(--space-md);
}

.faq-answer li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   About Page Enhanced Styles
   -------------------------------------------------------------------------- */

.research-callout {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin: var(--space-xl) 0;
}

.research-callout h4 {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.research-callout p {
    opacity: 0.9;
    margin-bottom: 0;
}

.color-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-xl) 0;
}

.color-table th,
.color-table td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-medium);
}

.color-table th {
    background-color: var(--color-gray-light);
    font-weight: 600;
}

.color-table td:first-child {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.table-swatch {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

/* Statistics/Numbers Section */
.stats-section {
    padding: var(--space-section) 0;
    background-color: var(--color-accent);
    color: var(--color-white);
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
}

.stat-item {
    padding: var(--space-lg);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    display: block;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* Color Selection Guide */
.color-selection-guide {
    padding: var(--space-section) 0;
    background-color: var(--color-white);
}

.color-selection-guide h2 {
    text-align: center;
    margin-bottom: var(--space-md);
}

.color-selection-guide .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.guide-table-wrapper {
    overflow-x: auto;
    margin-top: var(--space-xl);
}

.color-table {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    border-collapse: collapse;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.color-table th,
.color-table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-light);
}

.color-table th {
    background-color: var(--color-gray-light);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.color-table tbody tr:hover {
    background-color: var(--color-gray-light);
}

.color-table td:nth-child(2) {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
}

.table-swatch {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

@media (max-width: 600px) {
    .color-table th,
    .color-table td {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-sm);
    }

    .color-table th:nth-child(3),
    .color-table td:nth-child(3) {
        display: none;
    }
}

/* --------------------------------------------------------------------------
   FAQ Page - Enhanced Styles
   -------------------------------------------------------------------------- */

/* FAQ Navigation */
.faq-nav {
    padding: var(--space-lg) 0;
    background-color: var(--color-gray-light);
    border-bottom: 1px solid var(--color-gray-medium);
}

.faq-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
}

.faq-category-link {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background-color: var(--color-white);
    color: var(--color-charcoal);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition-base);
    border: 1px solid var(--color-gray-medium);
}

.faq-category-link:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

/* FAQ Section Title */
.faq-section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-gray-light);
    color: var(--color-charcoal);
}

/* FAQ Tips Section */
.faq-tips {
    padding: var(--space-section) 0;
    background-color: var(--color-gray-light);
}

.faq-tips h2 {
    text-align: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-2xl);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.tip-card {
    background-color: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    position: relative;
}

.tip-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.tip-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.tip-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

@media (max-width: 900px) {
    .tips-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .faq-categories {
        flex-direction: column;
        align-items: center;
    }

    .faq-category-link {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

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

/* --------------------------------------------------------------------------
   Contact Page - Enhanced Styles
   -------------------------------------------------------------------------- */

/* Form Intro */
.form-intro {
    margin-bottom: var(--space-xl);
}

.form-intro h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-sm);
}

.form-intro p {
    color: var(--color-gray-dark);
}

/* Form Row (Two Column) */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

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

/* Required Indicator */
.required {
    color: #e53e3e;
}

/* Form Checkbox */
.form-checkbox {
    margin-top: var(--space-md);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    flex-shrink: 0;
    cursor: pointer;
}

.checkbox-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

/* Form Note */
.form-note {
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    text-align: center;
}

/* Success Actions */
.success-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-top: var(--space-lg);
}

/* Sidebar Enhancements */
.sidebar-email .email-note {
    margin-top: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

.sidebar-faq .btn {
    margin-top: var(--space-md);
    display: inline-block;
}

.btn-small {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
}

.sidebar-privacy {
    background-color: var(--color-gray-light);
}

.sidebar-privacy h3 {
    font-size: var(--font-size-base);
}

.sidebar-privacy p {
    font-size: var(--font-size-sm);
}

/* Section Intro */
.section-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    color: var(--color-gray-dark);
}

/* Feedback Impact Section */
.feedback-impact {
    padding: var(--space-section) 0;
    background-color: var(--color-white);
}

.feedback-impact h2 {
    text-align: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-2xl);
}

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

.impact-text p {
    margin-bottom: var(--space-md);
}

.impact-list {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.impact-list li {
    margin-bottom: var(--space-sm);
}

.impact-quote blockquote {
    background-color: var(--color-gray-light);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-accent);
    font-style: italic;
    font-size: var(--font-size-lg);
}

.impact-quote cite {
    display: block;
    margin-top: var(--space-md);
    font-style: normal;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

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

/* Response Timeline Section */
.response-info {
    padding: var(--space-section) 0;
    background-color: var(--color-gray-light);
}

.response-card {
    background-color: var(--color-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 800px;
    margin: 0 auto;
}

.response-card h2 {
    text-align: center;
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-2xl);
}

.response-timeline {
    display: flex;
    justify-content: space-between;
    gap: var(--space-lg);
}

.timeline-item {
    flex: 1;
    text-align: center;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 20px;
    right: -10%;
    width: 20%;
    height: 2px;
    background-color: var(--color-gray-medium);
}

.timeline-marker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.timeline-content h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-xs);
}

.timeline-content p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

@media (max-width: 600px) {
    .response-timeline {
        flex-direction: column;
        gap: var(--space-xl);
    }

    .timeline-item:not(:last-child)::after {
        display: none;
    }
}

/* Contact CTA Section */
.contact-cta {
    padding: var(--space-section) 0;
    background-color: var(--color-charcoal);
    color: var(--color-white);
    text-align: center;
}

.contact-cta h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-md);
}

.contact-cta p {
    max-width: 500px;
    margin: 0 auto var(--space-xl);
    opacity: 0.9;
}

/* Footer Enhancement - Multi-column */
.footer-nav-column {
    text-align: left;
}

.footer-nav-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    color: var(--color-gray-dark);
}

.footer-nav-column ul {
    list-style: none;
}

.footer-nav-column li {
    margin-bottom: var(--space-sm);
}

.footer-nav-column a {
    font-size: var(--font-size-sm);
    color: var(--color-charcoal);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-nav-column a:hover {
    color: var(--color-accent);
}

/* Updated Footer Nav to use columns */
.footer-nav {
    display: flex;
    gap: var(--space-3xl);
}

@media (max-width: 768px) {
    .footer-nav {
        flex-direction: column;
        gap: var(--space-xl);
    }

    .footer-nav-column {
        text-align: center;
    }
}

/* ===============================================
   INDIVIDUAL COLOR PAGES - Deep Content Styles
   =============================================== */

/* Color Hero Sections */
.color-hero {
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.color-hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    line-height: 1.1;
}

.color-hero .hero-subtitle {
    font-size: var(--font-size-xl);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    opacity: 0.9;
}

/* Color-specific hero backgrounds */
.color-hero-white {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 2px solid var(--color-gray-light);
    color: var(--color-charcoal);
}

.color-hero-black {
    background: linear-gradient(135deg, #1a1a2e 0%, #0d0d0d 100%);
    color: #ffffff;
}

.color-hero-blue {
    background: linear-gradient(135deg, #1e3a5f 0%, #0066cc 100%);
    color: #ffffff;
}

.color-hero-green {
    background: linear-gradient(135deg, #1a472a 0%, #228b22 100%);
    color: #ffffff;
}

.color-hero-red {
    background: linear-gradient(135deg, #8b0000 0%, #cc0000 100%);
    color: #ffffff;
}

.color-hero-yellow {
    background: linear-gradient(135deg, #ffd700 0%, #ffeb3b 100%);
    color: #333333;
}

.color-hero-pink {
    background: linear-gradient(135deg, #ff69b4 0%, #ffb6c1 100%);
    color: #4a0028;
}

.color-hero-cream {
    background: linear-gradient(135deg, #fffdd0 0%, #f5f5dc 100%);
    border: 2px solid #e8e4c9;
    color: #5c4a2a;
}

.color-hero-gray {
    background: linear-gradient(135deg, #6b6b6b 0%, #808080 100%);
    color: #ffffff;
}

.color-hero-cyan {
    background: linear-gradient(135deg, #008b8b 0%, #00ffff 100%);
    color: #003333;
}

.color-hero-orange {
    background: linear-gradient(135deg, #cc5500 0%, #ff8c00 100%);
    color: #ffffff;
}

.color-hero-purple {
    background: linear-gradient(135deg, #4b0082 0%, #9370db 100%);
    color: #ffffff;
}

.color-hero-brown {
    background: linear-gradient(135deg, #3d2314 0%, #8b4513 100%);
    color: #ffffff;
}

.color-hero-teal {
    background: linear-gradient(135deg, #004d4d 0%, #008b8b 100%);
    color: #ffffff;
}

/* Launch Buttons */
.btn-launch {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-launch:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.btn-launch-white {
    background: var(--color-charcoal);
    color: #ffffff;
}

.btn-launch-black {
    background: #ffffff;
    color: #0d0d0d;
}

.btn-launch-blue {
    background: #ffffff;
    color: #0066cc;
}

.btn-launch-green {
    background: #ffffff;
    color: #228b22;
}

.btn-launch-red {
    background: #ffffff;
    color: #cc0000;
}

.btn-launch-yellow {
    background: #333333;
    color: #ffd700;
}

.btn-launch-pink {
    background: #4a0028;
    color: #ffb6c1;
}

.btn-launch-cream {
    background: #5c4a2a;
    color: #fffdd0;
}

.btn-launch-gray {
    background: #ffffff;
    color: #666666;
}

/* Quick Uses Section */
.quick-uses {
    margin-bottom: var(--space-3xl);
}

.quick-uses h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
    font-size: var(--font-size-2xl);
}

.quick-uses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-lg);
}

.quick-use-item {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-gray-lighter);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.quick-use-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.quick-use-item .icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
    display: block;
}

.quick-use-item span:last-child {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-charcoal);
}

/* Color Content Layout */
.color-content {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-3xl);
    align-items: start;
}

.main-content {
    min-width: 0;
}

.main-content h2 {
    font-size: var(--font-size-2xl);
    margin: var(--space-3xl) 0 var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 3px solid var(--color-accent);
}

.main-content h2:first-child {
    margin-top: 0;
}

.main-content h3 {
    font-size: var(--font-size-xl);
    margin: var(--space-xl) 0 var(--space-md);
    color: var(--color-charcoal);
}

.main-content p {
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    color: var(--color-gray-dark);
}

/* Uses Grid */
.uses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    margin: var(--space-xl) 0;
}

.use-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-light);
    transition: var(--transition-normal);
}

.use-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.use-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-charcoal);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.use-card h4 .icon {
    font-size: 1.5rem;
}

.use-card p {
    font-size: var(--font-size-base);
    color: var(--color-gray-dark);
    line-height: 1.7;
    margin-bottom: 0;
}

/* Info Callout Boxes */
.info-callout {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin: var(--space-xl) 0;
    border-left: 5px solid;
}

.info-callout h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.info-callout p {
    margin-bottom: 0;
    line-height: 1.7;
}

/* Color-specific callouts */
.info-callout-white {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-color: #dee2e6;
}

.info-callout-black {
    background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 100%);
    border-color: #444444;
    color: #ffffff;
}

.info-callout-black h4,
.info-callout-black p {
    color: #e0e0e0;
}

.info-callout-blue {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-color: #2196f3;
}

.info-callout-green {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    border-color: #4caf50;
}

.info-callout-red {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
    border-color: #f44336;
}

.info-callout-yellow {
    background: linear-gradient(135deg, #fffde7 0%, #fff9c4 100%);
    border-color: #ffc107;
}

.info-callout-pink {
    background: linear-gradient(135deg, #fce4ec 0%, #f8bbd9 100%);
    border-color: #e91e63;
}

.info-callout-cream {
    background: linear-gradient(135deg, #fffef0 0%, #f5f5dc 100%);
    border-color: #d4af37;
}

.info-callout-gray {
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    border-color: #9e9e9e;
}

/* Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

.comparison-item {
    text-align: center;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    background: var(--color-gray-lighter);
}

.comparison-item h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-sm);
    color: var(--color-charcoal);
}

.comparison-item p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    margin-bottom: 0;
}

/* Specifications Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-xl) 0;
    background: #ffffff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.specs-table th,
.specs-table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-light);
}

.specs-table th {
    background: var(--color-gray-lighter);
    font-weight: 600;
    color: var(--color-charcoal);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.specs-table td {
    color: var(--color-gray-dark);
}

.specs-table tr:last-child td {
    border-bottom: none;
}

.specs-table tr:hover td {
    background: var(--color-gray-lighter);
}

/* Color Page FAQ */
.color-faq {
    margin: var(--space-3xl) 0;
}

.faq-item-color {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-light);
}

.faq-item-color h4 {
    font-size: var(--font-size-lg);
    color: var(--color-charcoal);
    margin-bottom: var(--space-sm);
}

.faq-item-color p {
    color: var(--color-gray-dark);
    line-height: 1.7;
    margin-bottom: 0;
}

/* Related Colors Section */
.related-colors {
    margin: var(--space-3xl) 0;
    padding: var(--space-2xl);
    background: var(--color-gray-lighter);
    border-radius: var(--radius-xl);
}

.related-colors h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
    border-bottom: none;
}

.related-colors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-lg);
}

.related-color-card {
    text-align: center;
    padding: var(--space-lg);
    background: #ffffff;
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.related-color-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.color-preview {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin: 0 auto var(--space-sm);
    border: 3px solid #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.related-color-card span {
    font-weight: 600;
    color: var(--color-charcoal);
    font-size: var(--font-size-sm);
}

/* Content Sidebar */
.content-sidebar {
    position: sticky;
    top: var(--space-xl);
}

.sidebar-widget {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-light);
}

.sidebar-widget h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
    color: var(--color-charcoal);
}

.sidebar-widget ul {
    list-style: none;
}

.sidebar-widget li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

.sidebar-widget li:last-child {
    border-bottom: none;
}

.sidebar-widget .btn {
    width: 100%;
    text-align: center;
    margin-top: var(--space-md);
}

/* Sidebar Quick Launch */
.quick-launch-sidebar .color-swatch {
    width: 100%;
    height: 80px;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    border: 2px solid var(--color-gray-light);
}

/* Sidebar Color Details */
.color-detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.color-detail-item strong {
    color: var(--color-charcoal);
}

/* Color CTA Section */
.color-cta {
    text-align: center;
    padding: var(--space-3xl);
    border-radius: var(--radius-xl);
    margin: var(--space-3xl) 0;
}

.color-cta h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-md);
    border-bottom: none;
}

.color-cta p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Color-specific CTAs */
.color-cta-white {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: var(--color-charcoal);
}

.color-cta-black {
    background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 100%);
    color: #ffffff;
}

.color-cta-blue {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    color: #ffffff;
}

.color-cta-green {
    background: linear-gradient(135deg, #1a472a 0%, #22c55e 100%);
    color: #ffffff;
}

.color-cta-red {
    background: linear-gradient(135deg, #7f1d1d 0%, #dc2626 100%);
    color: #ffffff;
}

.color-cta-yellow {
    background: linear-gradient(135deg, #fbbf24 0%, #fde047 100%);
    color: #333333;
}

.color-cta-pink {
    background: linear-gradient(135deg, #db2777 0%, #f472b6 100%);
    color: #ffffff;
}

.color-cta-cream {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #5c4a2a;
}

.color-cta-gray {
    background: linear-gradient(135deg, #4b5563 0%, #6b7280 100%);
    color: #ffffff;
}

/* Internal Links Styling */
.main-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-color: rgba(59, 130, 246, 0.3);
    text-underline-offset: 2px;
    transition: var(--transition-fast);
}

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

/* Responsive Styles for Color Pages */
@media (max-width: 1024px) {
    .color-content {
        grid-template-columns: 1fr;
    }

    .content-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--space-xl);
    }

    .sidebar-widget {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .color-hero {
        padding: var(--space-2xl) var(--space-lg);
    }

    .color-hero h1 {
        font-size: 2rem;
    }

    .quick-uses-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .related-colors-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

@media (max-width: 480px) {
    .quick-uses-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .btn-launch {
        padding: var(--space-md) var(--space-xl);
        font-size: var(--font-size-base);
    }
}

/* ===============================================
   INTERACTIVE COLOR PREVIEW PANEL
   =============================================== */

/* Main Preview Panel Container */
.interactive-preview-panel {
    background: #ffffff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    margin-bottom: var(--space-3xl);
}

/* Color Preview Display Area */
.color-preview-display {
    position: relative;
    height: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

/* Fullscreen Button in Preview */
.preview-fullscreen-btn {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-xl);
    font-weight: 700;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    z-index: 2;
}

.preview-fullscreen-btn .fullscreen-icon {
    font-size: 1.5rem;
}

.preview-fullscreen-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

/* Current Hex Display */
.current-hex {
    position: absolute;
    bottom: var(--space-lg);
    right: var(--space-lg);
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-sm);
    color: var(--color-charcoal);
}

.dark-preview .current-hex {
    background: rgba(0, 0, 0, 0.6);
    color: #ffffff;
}

/* Click hint */
.preview-click-hint {
    position: absolute;
    bottom: var(--space-lg);
    left: var(--space-lg);
    font-size: var(--font-size-sm);
    opacity: 0.8;
    color: inherit;
}

.dark-preview .preview-click-hint {
    color: #ffffff;
}

/* Preview Controls Container */
.preview-controls {
    padding: var(--space-xl);
    background: var(--color-gray-lighter);
    border-top: 1px solid var(--color-gray-light);
}

/* Brightness Slider Section */
.brightness-control {
    margin-bottom: var(--space-lg);
}

.brightness-control-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.brightness-label {
    font-weight: 600;
    color: var(--color-charcoal);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.brightness-label .icon {
    font-size: 1.2rem;
}

.brightness-value {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-accent);
    min-width: 50px;
    text-align: right;
}

/* Custom Range Slider */
.brightness-slider {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right, #333333, #ffffff);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

.brightness-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: #ffffff;
    border: 3px solid var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-fast);
}

.brightness-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.brightness-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: #ffffff;
    border: 3px solid var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Shade Presets */
.shade-presets {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.shade-presets-label {
    width: 100%;
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    margin-bottom: var(--space-xs);
}

.shade-preset {
    padding: var(--space-xs) var(--space-md);
    border: 2px solid var(--color-gray-light);
    background: #ffffff;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-charcoal);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.shade-preset:hover {
    border-color: var(--color-accent);
    background: var(--color-gray-lighter);
}

.shade-preset.active {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: #ffffff;
}

/* Color-specific button styles in preview */
.preview-btn-white {
    background: var(--color-charcoal);
    color: #ffffff;
}

.preview-btn-black {
    background: #ffffff;
    color: #0d0d0d;
}

.preview-btn-blue {
    background: #ffffff;
    color: #0066cc;
}

.preview-btn-green {
    background: #ffffff;
    color: #228b22;
}

.preview-btn-red {
    background: #ffffff;
    color: #cc0000;
}

.preview-btn-yellow {
    background: #333333;
    color: #ffd700;
}

.preview-btn-pink {
    background: #4a0028;
    color: #ffb6c1;
}

.preview-btn-cream {
    background: #5c4a2a;
    color: #fffdd0;
}

.preview-btn-gray {
    background: #ffffff;
    color: #666666;
}

/* Dark Preview Text Colors */
.dark-preview {
    color: #ffffff;
}

/* Quick Info Stats */
.preview-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    padding: var(--space-lg) var(--space-xl);
    background: #ffffff;
    border-top: 1px solid var(--color-gray-light);
}

.preview-stat {
    text-align: center;
}

.preview-stat-value {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-charcoal);
}

.preview-stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-gray-dark);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Scroll Indicator */
.scroll-indicator {
    text-align: center;
    padding: var(--space-lg) 0;
    color: var(--color-gray-dark);
    font-size: var(--font-size-sm);
}

.scroll-indicator-arrow {
    display: block;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    margin-bottom: var(--space-xs);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Responsive Styles for Preview Panel */
@media (max-width: 768px) {
    .color-preview-display {
        height: 280px;
    }

    .preview-fullscreen-btn {
        padding: var(--space-md) var(--space-xl);
        font-size: var(--font-size-lg);
    }

    .preview-stats {
        gap: var(--space-lg);
        flex-wrap: wrap;
    }

    .preview-stat {
        flex: 1 1 45%;
    }
}

@media (max-width: 480px) {
    .color-preview-display {
        height: 240px;
    }

    .preview-fullscreen-btn {
        padding: var(--space-sm) var(--space-lg);
        font-size: var(--font-size-base);
    }

    .shade-presets {
        justify-content: center;
    }

    .brightness-control-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .brightness-value {
        text-align: left;
    }
}