/* ==========================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ========================================== */
:root {
    /* Base Colors */
    --color-white: #ffffff;
    --color-black: #1a1a2e;
    
    /* Neutral Palette */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Soothing Color Palette */
    --color-sage-50: #f6f7f4;
    --color-sage-100: #e8ebe3;
    --color-sage-200: #d4dbc9;
    --color-sage-300: #b5c2a3;
    --color-sage-400: #97a87f;
    --color-sage-500: #7a8f62;
    --color-sage-600: #5f724c;
    
    /* Telugu Theme - Warm Terracotta */
    --telugu-primary: #c2694a;
    --telugu-primary-light: #e8a88c;
    --telugu-primary-dark: #994d35;
    --telugu-accent: #f4d9c6;
    --telugu-bg: #faf6f3;
    --telugu-sidebar: #2d2420;
    
    /* Sanskrit Theme - Deep Purple/Gold */
    --sanskrit-primary: #7c5295;
    --sanskrit-primary-light: #a881c4;
    --sanskrit-primary-dark: #5a3a6e;
    --sanskrit-accent: #e8d5b7;
    --sanskrit-bg: #f9f7fb;
    --sanskrit-sidebar: #1e1a2e;
    
    /* Typography */
    --font-primary: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* 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 -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Layout */
    --sidebar-width: 300px;
    --header-height: 60px;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-sage-50);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

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

ul, ol {
    list-style: none;
}

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

/* ==========================================
   LANDING PAGE STYLES
   ========================================== */
.landing-page {
    background: linear-gradient(135deg, var(--color-sage-50) 0%, var(--color-sage-100) 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

.landing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* Background Decoration */
.background-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
}

.circle-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-sage-200) 0%, transparent 70%);
    top: -200px;
    right: -200px;
}

.circle-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--telugu-accent) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
}

.circle-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--sanskrit-accent) 0%, transparent 70%);
    top: 40%;
    left: 20%;
}

/* Landing Header */
.landing-header {
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 2rem;
    color: var(--color-sage-500);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

/* Landing Main */
.landing-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-2xl) 0;
}

.welcome-section {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.main-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-600);
    font-size: 0.9375rem;
}

.feature-icon {
    font-size: 1.25rem;
}

/* Language Cards */
.language-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.language-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    overflow: hidden;
    display: block;
}

.language-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-script {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.language-card h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-900);
}

.language-card p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.card-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

.card-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    border-radius: 0 var(--radius-2xl) 0 100%;
    opacity: 0.1;
    transition: all var(--transition-base);
}

/* Telugu Card Styling */
.telugu-card {
    border: 2px solid transparent;
}

.telugu-card:hover {
    border-color: var(--telugu-primary-light);
}

.telugu-card .card-script {
    color: var(--telugu-primary);
}

.telugu-card .card-arrow {
    background: var(--telugu-accent);
    color: var(--telugu-primary-dark);
}

.telugu-card:hover .card-arrow {
    background: var(--telugu-primary);
    color: var(--color-white);
}

.telugu-card .card-decoration {
    background: var(--telugu-primary);
}

.telugu-card:hover .card-decoration {
    opacity: 0.15;
}

/* Sanskrit Card Styling */
.sanskrit-card {
    border: 2px solid transparent;
}

.sanskrit-card:hover {
    border-color: var(--sanskrit-primary-light);
}

.sanskrit-card .card-script {
    color: var(--sanskrit-primary);
}

.sanskrit-card .card-arrow {
    background: var(--sanskrit-accent);
    color: var(--sanskrit-primary-dark);
}

.sanskrit-card:hover .card-arrow {
    background: var(--sanskrit-primary);
    color: var(--color-white);
}

.sanskrit-card .card-decoration {
    background: var(--sanskrit-primary);
}

.sanskrit-card:hover .card-decoration {
    opacity: 0.15;
}

.coming-soon {
    text-align: center;
    color: var(--color-gray-400);
    font-size: 0.875rem;
    margin-top: var(--spacing-xl);
    font-style: italic;
}

/* Landing Footer */
.landing-footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

/* ==========================================
   LEARNING PAGE LAYOUT
   ========================================== */
.learning-page {
    min-height: 100vh;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* ==========================================
   SIDEBAR STYLES
   ========================================== */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    overflow: hidden;
}

.telugu-theme .sidebar {
    background: linear-gradient(180deg, var(--telugu-sidebar) 0%, #1a1512 100%);
}

.sanskrit-theme .sidebar {
    background: linear-gradient(180deg, var(--sanskrit-sidebar) 0%, #12101a 100%);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.back-home {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-fast);
}

.back-home:hover {
    color: rgba(255, 255, 255, 0.9);
}

.back-icon {
    font-size: 1rem;
}

.language-title {
    color: var(--color-white);
}

.language-title .script {
    font-size: 1.75rem;
    display: block;
    margin-bottom: var(--spacing-xs);
    opacity: 0.9;
}

.language-title h1 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
}

/* Menu Navigation */
.menu-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md) 0;
}

.menu-nav::-webkit-scrollbar {
    width: 4px;
}

.menu-nav::-webkit-scrollbar-track {
    background: transparent;
}

.menu-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.menu-list {
    padding: 0 var(--spacing-sm);
}

.menu-item {
    margin-bottom: var(--spacing-xs);
}

.menu-button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    text-align: left;
}

.menu-button:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

.menu-item.active > .menu-button {
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
}

.menu-icon {
    font-size: 1.125rem;
    flex-shrink: 0;
}

.menu-text {
    flex: 1;
    font-size: 0.9375rem;
    font-weight: 500;
}

.menu-arrow {
    font-size: 1rem;
    opacity: 0.6;
    transition: transform var(--transition-fast);
}

.menu-item.active > .menu-button .menu-arrow {
    transform: rotate(90deg);
}

/* Submenu */
.submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.menu-item.active .submenu {
    max-height: 500px;
}

.submenu-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: calc(var(--spacing-md) + 1.125rem + var(--spacing-sm));
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    margin: var(--spacing-xs) var(--spacing-sm);
    transition: all var(--transition-fast);
}

.submenu-link:hover {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.05);
}

.submenu-link.active {
    color: var(--color-white);
}

.telugu-theme .submenu-link.active {
    background: var(--telugu-primary);
}

.sanskrit-theme .submenu-link.active {
    background: var(--sanskrit-primary);
}


/* Nested submenu group (3rd level) */
.submenu-group {
    margin: var(--spacing-xs) var(--spacing-sm);
}

.submenu-group-button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: calc(var(--spacing-md) + 1.125rem + var(--spacing-sm));
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    font-family: inherit;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.submenu-group-button:hover {
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.05);
}

.submenu-group-arrow {
    transition: transform var(--transition-fast);
    font-size: 1rem;
}

.submenu-group.open .submenu-group-arrow {
    transform: rotate(90deg);
}

.submenu-nested {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    list-style: none;
    padding: 0;
    margin: 0;
}

.submenu-group.open .submenu-nested {
    max-height: 200px;
}

.submenu-nested .submenu-link {
    padding-left: calc(var(--spacing-md) + 1.125rem + var(--spacing-sm) + 1rem);
    font-size: 0.8rem;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.progress-section {
    color: rgba(255, 255, 255, 0.8);
}

.progress-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.7;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    margin: var(--spacing-sm) 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.telugu-theme .progress-fill {
    background: linear-gradient(90deg, var(--telugu-primary) 0%, var(--telugu-primary-light) 100%);
}

.sanskrit-theme .progress-fill {
    background: linear-gradient(90deg, var(--sanskrit-primary) 0%, var(--sanskrit-primary-light) 100%);
}

.progress-text {
    font-size: 0.8125rem;
    opacity: 0.8;
}

/* ==========================================
   CONTENT AREA STYLES
   ========================================== */
.content-area {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.telugu-theme .content-area {
    background: var(--telugu-bg);
}

.sanskrit-theme .content-area {
    background: var(--sanskrit-bg);
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
}

/* Welcome Content */
.welcome-content {
    animation: fadeIn var(--transition-slow);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.welcome-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.welcome-header h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.welcome-header h1 .translation {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-gray-500);
}

.welcome-header .lead {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Info Cards */
.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.info-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.info-card:hover {
    transform: translateY(-4px);
}

.info-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.info-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.info-card p {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* Quick Start Guide */
.quick-start {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.quick-start h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.telugu-theme .step-number {
    background: var(--telugu-accent);
    color: var(--telugu-primary-dark);
}

.sanskrit-theme .step-number {
    background: var(--sanskrit-accent);
    color: var(--sanskrit-primary-dark);
}

.step-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* Tip Box */
.tip-box {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--color-sage-100);
    border-left: 4px solid var(--color-sage-400);
}

.tip-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tip-content {
    font-size: 0.9375rem;
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Quote Box (Sanskrit) */
.quote-box {
    text-align: center;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.quote-box blockquote {
    border: none;
    padding: 0;
}

.sanskrit-quote {
    font-size: 1.75rem;
    color: var(--sanskrit-primary);
    margin-bottom: var(--spacing-sm);
}

.quote-box .translation {
    font-style: italic;
    color: var(--color-gray-500);
}

/* ==========================================
   DYNAMIC CONTENT STYLES
   ========================================== */
.lesson-content {
    animation: fadeIn var(--transition-slow);
}

.lesson-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-gray-100);
}

.lesson-header h1 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.lesson-meta {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.lesson-body {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-gray-700);
}

.lesson-body h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

.lesson-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
}

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

.lesson-body ul, .lesson-body ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.lesson-body li {
    margin-bottom: var(--spacing-sm);
    list-style: disc;
}

.lesson-body ol li {
    list-style: decimal;
}

/* Example Box */
.example-box {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
}

.example-box .native {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.telugu-theme .example-box .native {
    color: var(--telugu-primary);
}

.sanskrit-theme .example-box .native {
    color: var(--sanskrit-primary);
}

.example-box .transliteration {
    font-style: italic;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xs);
}

.example-box .meaning {
    color: var(--color-gray-700);
}

/* Character Grid */
.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.character-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.telugu-theme .character-card:hover {
    border-color: var(--telugu-primary-light);
}

.sanskrit-theme .character-card:hover {
    border-color: var(--sanskrit-primary-light);
}

.character-card .char {
    font-size: 2rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.telugu-theme .character-card .char {
    color: var(--telugu-primary);
}

.sanskrit-theme .character-card .char {
    color: var(--sanskrit-primary);
}

.character-card .romanized {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

/* Navigation Buttons */
.lesson-nav {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.nav-btn.prev {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.nav-btn.prev:hover {
    background: var(--color-gray-200);
}

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

.telugu-theme .nav-btn.next {
    background: var(--telugu-primary);
}

.telugu-theme .nav-btn.next:hover {
    background: var(--telugu-primary-dark);
}

.sanskrit-theme .nav-btn.next {
    background: var(--sanskrit-primary);
}

.sanskrit-theme .nav-btn.next:hover {
    background: var(--sanskrit-primary-dark);
}

/* ==========================================
   RESPONSIVE STYLES
   ========================================== */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 260px;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }
    
    .landing-container {
        padding: var(--spacing-lg);
    }
    
    .language-cards {
        grid-template-columns: 1fr;
    }
    
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        position: relative;
        width: 100%;
        min-height: auto;
    }
    
    .menu-nav {
        max-height: 50vh;
    }
    
    .content-area {
        margin-left: 0;
    }
    
    .content-wrapper {
        padding: var(--spacing-lg);
    }
    
    .welcome-header h1 {
        font-size: 2rem;
    }
    
    .info-cards {
        grid-template-columns: 1fr;
    }
    
    .features {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .landing-container {
        padding: var(--spacing-md);
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .language-card {
        padding: var(--spacing-lg);
    }
    
    .card-script {
        font-size: 2rem;
    }
    
    .language-card h2 {
        font-size: 1.5rem;
    }
    
    .content-wrapper {
        padding: var(--spacing-md);
    }
    
    .lesson-nav {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .nav-btn {
        justify-content: center;
    }
    
    .custom-table td {
    font-size: 18px;
	}
}

#content {
    text-align: left;
    padding: 10px;
}

#content table {
    border-collapse: collapse;
    width: 100%;
}

#content th, #content td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: left;
}



/* Match your theme look */
#contentArea table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
    font-size: 20px;
}

/* Header */
#contentArea th {
    background: linear-gradient(135deg, #b7410e, #ca6b00d9);
    color: white;
    padding: 14px;
    font-weight: 600;
    text-align: left;
}

/* Cells */
#contentArea td {
    padding: 12px;
    border-bottom: 1px solid #eee;
}

/* Alternate rows */
#contentArea tr:nth-child(even) {
    background: #f7fbff;
}

/* Hover */
#contentArea tr:hover {
    background: #FFA500;
}

.color-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.color-table th {
  background-color: #2c7be5;
  color: white;
  padding: 10px;
}

.color-table td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: center;
}

.color-table tr:nth-child(even) {
  background-color: #f2f2f2;
}

.color-box {
  width: 40px;
  height: 25px;
  margin: auto;
  border-radius: 4px;
}

.flashcard-container {
    text-align: center;
    margin: 30px auto;
}

.flashcard {
    background-color: #fdf2e9;  /* soft cream */
    color: #333;                /* text color */
    font-size: 2rem;
    padding: 40px 20px;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    max-width: 400px;
    margin: 0 auto 20px;
    transition: transform 0.3s ease;
}

.flashcard:hover {
    transform: scale(1.05);
}

.flashcard-btn {
    background-color: #f4a261;  /* site accent */
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.flashcard-btn:hover {
    background-color: #e76f51;
}

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

.flashcard-word {
    font-size: 2rem;
    font-weight: bold;
}

.flashcard-translation {
    font-size: 1.1rem;
    color: #666;
}

.showTell-card {
  max-width: 600px;
  margin: 20px auto;
  font-family: inherit;
}

.showTell-top {
  display: flex;
  border: 2px solid #333;
  border-bottom: 2px solid #333;
}

.showTell-bottom {
  display: flex;
  border: 2px solid #333;
  border-bottom: 2px solid #333;
}

.showTell-image-wrap {
  flex: 3;
  border-right: 2px solid #333;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.showTell-img {
  flex: 3;
  max-width: 800px;
  max-height: 600px;
  width: 100%;
  object-fit: contain;
}

.showTell-names {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 10px;
  gap: 10px;
}

.showTell-tel-img {
  font-size: 2rem;
  font-weight: bold;
  text-align: center;
  color: #1a1a6e;
}

.showTell-td-telugu {
  font-size: 2rem;
  font-weight: bold;
  text-align: center;
  color: #1a1a6e;
}

.showTell-td-english {
  font-size: 1rem;
  font-weight: bold;
  text-align: center;
  color: #1a1a6e;
}

.showTell-eng-img {
  font-size: 1rem;
  text-align: center;
  color: #444;
  border-top: 1px solid #ccc;
  padding-top: 8px;
  width: 100%;
}

.showTell-details {
  border: 2px solid #333;
  padding: 14px;
  font-size: 1em;
  line-height: 1.6;
  color: var(--telugu-primary-dark);
  background: #fafafa;
}

.showTell-next-btn {
  display: block;
  margin: 16px auto 0;
  padding: 8px 24px;
  font-size: 1em;
  cursor: pointer;
  background: var(--telugu-primary);
  color: white;
  border: none;
  border-radius: 6px;
}

.showTell-next-btn:hover {
  background: var(--telugu-primary-light);
}