/* ȅ.com - The Future of Digital Innovation */

/* CSS Custom Properties */
:root {
    /* Modern Monochrome Color Palette */
    --primary-black: #000000;
    --primary-dark: #0a0a0a;
    --primary-gray: #1a1a1a;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    /* Semantic Colors */
    --background: var(--primary-black);
    --surface: var(--primary-gray);
    --text-primary: var(--white);
    --text-secondary: var(--gray-400);
    --text-muted: var(--gray-500);
    --text-on-light: var(--gray-700);
    --text-secondary-light: var(--gray-600);
    --border: var(--gray-800);
    --border-light: var(--gray-900);
    
    /* Accent Colors */
    --accent-primary: var(--white);
    --accent-secondary: var(--gray-300);
    --accent-hover: var(--gray-100);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #ffffff 0%, #a3a3a3 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #000000 100%);
    --gradient-hero: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.8) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Merriweather', Georgia, serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: 0.02em;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 0.75rem 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.brand-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
    font-weight: 900;
    font-family: var(--font-serif);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--white);
    color: var(--primary-black) !important;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: none;
    transition: var(--transition);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.nav-cta::after {
    display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 0.25rem;
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    position: relative;
    overflow: hidden;
    background: var(--background);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 600px;
}

.hero-pronunciation {
    margin-bottom: 2rem;
    text-align: center;
    max-width: 300px;
}

.pronunciation-visual {
    position: relative;
    display: inline-block;
    margin-bottom: 1rem;
}

.char-display {
    font-size: 8rem;
    font-weight: 900;
    color: var(--accent-primary);
    display: block;
    position: relative;
    font-family: var(--font-serif);
    animation: float 6s ease-in-out infinite;
}

.tone-curve {
    position: absolute;
    top: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 4rem;
    height: 2rem;
    opacity: 0.7;
}

.tone-curve.falling::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--accent-primary);
    opacity: 0.3;
    clip-path: path('M0,5 Q20,15 40,25 T60,30');
}

.play-button {
    position: absolute;
    bottom: -0.5rem;
    right: -0.5rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--white);
    color: var(--primary-black);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.pronunciation-guide {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: brightness(1.2);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-primary);
    display: block;
    font-family: var(--font-serif);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    letter-spacing: 0.025em;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-black);
    border: 1px solid var(--white);
}

.btn-primary:hover {
    background: var(--gray-200);
    border-color: var(--gray-200);
    color: var(--primary-black);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-900);
    border-color: var(--gray-600);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-char {
    position: absolute;
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-700);
    opacity: 0.5;
    animation: float 6s ease-in-out infinite;
    font-family: var(--font-serif);
}

.floating-char[data-char="ȅ"] {
    top: 10%;
    left: 15%;
    animation-delay: -1s;
    font-size: 4rem;
    color: var(--gray-600);
}

.floating-char[data-char="$"] {
    top: 20%;
    right: 10%;
    animation-delay: -2s;
}

.floating-char[data-char="€"] {
    bottom: 30%;
    left: 10%;
    animation-delay: -3s;
}

.floating-char[data-char="£"] {
    bottom: 20%;
    right: 20%;
    animation-delay: -4s;
}

.floating-char[data-char="%"] {
    top: 50%;
    left: 5%;
    animation-delay: -5s;
}

.floating-char[data-char="↗"] {
    top: 60%;
    right: 5%;
    animation-delay: -6s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: 0 0 0 1px var(--border);
    border: 1px solid var(--border);
    max-width: 400px;
    width: 100%;
    backdrop-filter: blur(10px);
}

.lesson-preview h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.vocab-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.source-language {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.phonetic {
    font-size: 1rem;
    color: var(--text-secondary);
    font-family: monospace;
}

.target-language {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 0.5rem;
    background: var(--gray-800);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Hero Background */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.05;
    animation: orb-float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--gradient-primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--gradient-dark);
    bottom: -150px;
    left: -150px;
    animation-delay: -10s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: var(--white);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -5s;
    opacity: 0.02;
}

@keyframes orb-float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--background);
    border-top: 1px solid var(--border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--gray-700);
    background: var(--gray-900);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    border-radius: var(--radius-lg);
    background: var(--gray-800);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.feature-preview {
    margin-top: 1rem;
}

.tone-example {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
}

.tone-char {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-serif);
}

.mini-curve {
    width: 2rem;
    height: 1rem;
    background: var(--accent-primary);
    opacity: 0.3;
}

.mini-curve.falling {
    clip-path: path('M0,2 Q10,8 20,15');
}

.lesson-stack {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.lesson-item {
    background: var(--surface);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.culture-icons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    font-size: 1.5rem;
}

.community-avatars {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--gray-700);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.business-terms {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.business-terms span {
    background: var(--surface);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-primary);
}

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

.story-line {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.story-line:first-child {
    color: var(--accent-primary);
    font-weight: 600;
}

.story-line:last-child {
    color: var(--text-secondary);
    font-style: italic;
}

/* Demo Section */
.demo-section {
    padding: 6rem 0;
    background: var(--background);
    border-top: 1px solid var(--border);
}

.demo-container {
    max-width: 900px;
    margin: 0 auto;
}

.demo-interface {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
}

.demo-header {
    background: var(--gray-800);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.demo-tabs {
    display: flex;
    gap: 0.5rem;
}

.demo-tab {
    background: transparent;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.demo-tab.active {
    background: var(--surface);
    color: var(--accent-primary);
    border: 1px solid var(--border);
}

.demo-content {
    padding: 2rem;
}

.demo-panel {
    display: none;
}

.demo-panel.active {
    display: block;
}

.pronunciation-trainer {
    text-align: center;
}

.word-display {
    margin-bottom: 2rem;
}

.linguistic-term {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.phonetic-display {
    display: block;
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-family: monospace;
    margin-bottom: 0.5rem;
}

.translation-meaning {
    display: block;
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
}

.tone-visualization {
    margin-bottom: 2rem;
}

.tone-graph {
    width: 100%;
    max-width: 300px;
    height: 100px;
}

.tone-path {
    stroke-dasharray: 5;
    animation: draw-path 2s ease-in-out infinite;
}

.tone-point {
    animation: pulse-point 2s ease-in-out infinite;
}

@keyframes draw-path {
    0% {
        stroke-dashoffset: 20;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

@keyframes pulse-point {
    0%, 100% {
        r: 4;
        opacity: 1;
    }
    50% {
        r: 6;
        opacity: 0.7;
    }
}

.demo-play-btn {
    background: var(--gradient-blue);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 auto;
    transition: var(--transition);
}

.demo-play-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Vocabulary Trainer */
.flashcard {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    border: 1px solid var(--border-light);
}

.vocab-word {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

.vocab-category {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.vocab-meaning {
    display: block;
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.usage-example {
    display: block;
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
}

.vocab-progress {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.vocab-progress .progress-bar {
    flex: 1;
    margin-left: 1rem;
    height: 0.25rem;
}

/* Grammar Trainer */
.grammar-rule h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.sentence-parts {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1rem;
}

.sentence-translation {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.part {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    min-width: 80px;
}

.part.subject {
    background: rgba(79, 70, 229, 0.1);
    color: var(--accent-blue);
}

.part.verb {
    background: rgba(124, 58, 237, 0.1);
    color: var(--accent-purple);
}

.part.object {
    background: rgba(55, 48, 163, 0.1);
    color: var(--accent-indigo);
}

/* Culture Section */
.culture-section {
    padding: 6rem 0;
    background: var(--surface);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.culture-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.culture-card:hover {
    transform: translateY(-4px);
    border-color: var(--gray-700);
    background: var(--gray-900);
}

.culture-image {
    height: 200px;
    background: var(--gray-800);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border);
}

.image-placeholder {
    font-size: 3rem;
}

.culture-content {
    padding: 2rem;
}

.culture-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.culture-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.culture-link {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.culture-link:hover {
    text-decoration: underline;
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background: var(--gradient-blue);
    color: var(--white);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-text h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: 1rem;
}

.cta-text p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.cta-actions .btn-primary {
    background: var(--white);
    color: var(--primary-black);
}

.cta-actions .btn-primary:hover {
    background: var(--gray-200);
    color: var(--primary-black);
}

.cta-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-brand .brand-icon {
    font-size: 2rem;
    color: var(--accent-blue);
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    color: var(--gray-400);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.social-link:hover {
    color: var(--white);
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .culture-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    .demo-tabs {
        flex-wrap: wrap;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-pronunciation {
        margin-bottom: 1.5rem;
    }
    
    .char-display {
        font-size: 4rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .demo-content {
        padding: 1.5rem;
    }
    
    .culture-content {
        padding: 1.5rem;
    }
}

/* Text Visibility Utility Classes */
.text-on-light {
    color: var(--text-on-light) !important;
}

.text-secondary-light {
    color: var(--text-secondary-light) !important;
}

.text-contrast-safe {
    color: var(--gray-600) !important;
}

/* Ensure proper contrast for specific components */
.hero-card .text-secondary {
    color: var(--text-secondary);
}

.feature-card .text-secondary {
    color: var(--text-secondary);
}

.culture-card .text-secondary {
    color: var(--text-secondary);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --text-secondary: var(--gray-600);
        --text-muted: var(--gray-700);
    }
    
    .gradient-text {
        background: none !important;
        -webkit-background-clip: initial !important;
        -webkit-text-fill-color: initial !important;
        color: var(--white) !important;
    }
}