/* Modern Mini App Design System - Mobile First */
:root {
    /* Color Palette - Modern & Bold with Vibrant Gradients */
    --color-primary: #6366f1;        /* Indigo */
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #10b981;      /* Emerald Green */
    --color-secondary-dark: #059669;
    --color-secondary-light: #34d399;
    --color-accent: #ec4899;         /* Pink */
    --color-accent-dark: #db2777;
    --color-accent-light: #f472b6;
    --color-tertiary: #f59e0b;       /* Amber */
    --color-tertiary-dark: #d97706;
    --color-tertiary-light: #fbbf24;
    --color-quaternary: #8b5cf6;      /* Purple */
    --color-quaternary-dark: #7c3aed;
    --color-quaternary-light: #a78bfa;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #06b6d4;            /* Cyan */
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    
    /* Light Theme - Neutrals */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-text-primary: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-tertiary: #94a3b8;
    --color-border: #e2e8f0;
    
    /* Spacing Scale */
    --space-xs: 0.25rem;   /* 4px */
    --space-sm: 0.5rem;    /* 8px */
    --space-md: 1rem;      /* 16px */
    --space-lg: 1.5rem;     /* 24px */
    --space-xl: 2rem;       /* 32px */
    --space-2xl: 3rem;      /* 48px */
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 1.875rem;   /* 30px */
    --font-size-4xl: 2.25rem;    /* 36px */
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Border Radius */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;     /* 24px */
    --radius-full: 9999px;
    
    /* Shadows - Light Theme */
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-index layers */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

/* Dark Theme */
[data-theme="dark"],
html[data-theme="dark"],
html[data-theme="dark"] body,
body.dark-theme {
    /* Dark Theme - Neutrals */
    --color-bg-primary: #0f172a !important;
    --color-bg-secondary: #1e293b !important;
    --color-bg-tertiary: #334155 !important;
    --color-text-primary: #f1f5f9 !important;
    --color-text-secondary: #cbd5e1 !important;
    --color-text-tertiary: #94a3b8 !important;
    --color-border: #334155 !important;
    
    /* Adjust primary colors for dark mode - More Vibrant */
    --color-primary: #818cf8 !important;        /* Light Indigo */
    --color-primary-dark: #6366f1 !important;
    --color-primary-light: #a5b4fc !important;
    --color-secondary: #34d399 !important;      /* Light Emerald */
    --color-secondary-dark: #10b981 !important;
    --color-secondary-light: #6ee7b7 !important;
    --color-accent: #f472b6 !important;        /* Light Pink */
    --color-accent-dark: #ec4899 !important;
    --color-accent-light: #f9a8d4 !important;
    --color-tertiary: #fbbf24 !important;       /* Light Amber */
    --color-tertiary-dark: #f59e0b !important;
    --color-tertiary-light: #fcd34d !important;
    --color-quaternary: #a78bfa !important;     /* Light Purple */
    --color-quaternary-dark: #8b5cf6 !important;
    --color-quaternary-light: #c4b5fd !important;
    --color-info: #22d3ee !important;           /* Light Cyan */
    
    /* Dark Theme Gradients */
    --gradient-primary: linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #f472b6 100%) !important;
    --gradient-secondary: linear-gradient(135deg, #34d399 0%, #22d3ee 100%) !important;
    --gradient-accent: linear-gradient(135deg, #fbbf24 0%, #f87171 100%) !important;
    --gradient-card: linear-gradient(135deg, rgba(129, 140, 248, 0.15) 0%, rgba(167, 139, 250, 0.15) 100%) !important;
    
    /* Dark theme shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3) !important;
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3) !important;
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3) !important;
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3) !important;
}

/* Force dark theme styles on body and all elements */
html[data-theme="dark"] body,
body.dark-theme {
    background: var(--color-bg-secondary) !important;
    color: var(--color-text-primary) !important;
}

html[data-theme="dark"] .app-container,
body.dark-theme .app-container {
    background: var(--color-bg-secondary) !important;
}

html[data-theme="dark"] .card,
body.dark-theme .card {
    background: var(--color-bg-primary) !important;
    color: var(--color-text-primary) !important;
    border-color: var(--color-border) !important;
}

html[data-theme="dark"] .top-nav,
body.dark-theme .top-nav {
    background: var(--color-bg-primary) !important;
    border-bottom-color: var(--color-border) !important;
}

html[data-theme="dark"] .bottom-nav,
body.dark-theme .bottom-nav {
    background: var(--color-bg-primary) !important;
    border-top-color: var(--color-border) !important;
}

html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] p,
html[data-theme="dark"] span,
html[data-theme="dark"] div,
body.dark-theme h1,
body.dark-theme h2,
body.dark-theme h3,
body.dark-theme p,
body.dark-theme span,
body.dark-theme div {
    color: var(--color-text-primary) !important;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    padding-bottom: env(safe-area-inset-bottom);
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Top Navigation Bar */
.top-nav {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;
}

.top-nav-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.top-nav-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.top-nav-close:active {
    background: var(--color-bg-tertiary);
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: white;
    font-size: var(--font-size-sm);
}

.logo-text {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
}

.top-nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.theme-toggle-btn {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    display: flex !important;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--color-bg-tertiary);
    cursor: pointer;
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
    flex-shrink: 0;
}

.theme-toggle-btn:hover {
    background: var(--color-border);
    transform: scale(1.05);
}

.theme-toggle-btn:active {
    transform: scale(0.95);
}

.top-nav-menu {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.top-nav-menu:active {
    background: var(--color-bg-tertiary);
}

/* Main Content Container */
.app-container {
    min-height: calc(100vh - 56px - 72px); /* Subtract top nav and bottom nav */
    padding: var(--space-md);
    padding-bottom: calc(var(--space-xl) + 80px + env(safe-area-inset-bottom)); /* Extra space for bottom nav */
}

/* Page Title Section */
.page-title-section {
    margin-bottom: var(--space-xl);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    line-height: 1.2;
}

.page-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
}

/* Card Component */
.card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0.6;
}

.card:active {
    transform: scale(0.98);
}

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

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.card-action {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Progress Card */
.progress-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.progress-circle {
    width: 80px;
    height: 80px;
    min-width: 80px;
    position: relative;
}

.progress-circle svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-circle-bg {
    fill: none;
    stroke: var(--color-bg-tertiary);
    stroke-width: 8;
}

.progress-circle-fill {
    fill: none;
    stroke: url(#progressGradient);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset var(--transition-slow);
}

.progress-circle-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}


.progress-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.progress-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.progress-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.progress-stat-value {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-top: var(--space-xs);
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.stat-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-secondary);
    opacity: 0.7;
}

.stat-card:nth-child(1)::before {
    background: linear-gradient(90deg, var(--color-primary), var(--color-quaternary));
}

.stat-card:nth-child(2)::before {
    background: linear-gradient(90deg, var(--color-secondary), var(--color-info));
}

.stat-card:nth-child(3)::before {
    background: linear-gradient(90deg, var(--color-accent), var(--color-tertiary));
}

.stat-card:nth-child(4)::before {
    background: linear-gradient(90deg, var(--color-quaternary), var(--color-primary));
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-xs);
}

.stat-card:nth-child(1) .stat-value {
    background: linear-gradient(135deg, var(--color-primary), var(--color-quaternary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card:nth-child(2) .stat-value {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card:nth-child(3) .stat-value {
    background: linear-gradient(135deg, var(--color-accent), var(--color-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card:nth-child(4) .stat-value {
    background: linear-gradient(135deg, var(--color-quaternary), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

/* Topic List */
.topic-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.topic-item {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-primary);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.topic-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
    opacity: 0.8;
}

.topic-item:nth-child(odd)::before {
    background: linear-gradient(180deg, var(--color-primary), var(--color-quaternary));
}

.topic-item:nth-child(even)::before {
    background: linear-gradient(180deg, var(--color-secondary), var(--color-info));
}

.topic-item:active {
    transform: scale(0.98);
    background: var(--color-bg-tertiary);
}

.topic-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
}

.topic-icon {
    font-size: var(--font-size-2xl);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.topic-details {
    flex: 1;
}

.topic-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.topic-mastery {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

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

.topic-progress-value {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.topic-arrow {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-lg);
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    min-height: 48px; /* Touch-friendly */
    -webkit-tap-highlight-color: transparent;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:active::before {
    left: 100%;
}

.btn-primary:active {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: var(--shadow-md);
    border: none;
}

.btn-secondary:active {
    opacity: 0.9;
}

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

.btn-outline:active {
    background: var(--color-bg-tertiary);
}

.btn-full {
    width: 100%;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    padding-bottom: calc(var(--space-sm) + env(safe-area-inset-bottom));
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    min-width: 60px;
    padding: var(--space-xs);
    border-radius: var(--radius-md);
}

.nav-item:active {
    background: var(--color-bg-tertiary);
}

.nav-item.active {
    color: var(--color-primary);
}

.nav-icon {
    font-size: var(--font-size-xl);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    color: var(--color-text-secondary);
}

.empty-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.empty-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Loading Spinner */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-bg-tertiary);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: var(--space-xl) auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

/* Responsive adjustments */
@media (min-width: 768px) {
    .app-container {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Telegram WebApp specific - only apply if not manually themed */
body.telegram-webapp:not([data-theme="dark"]):not(.dark-theme) {
    background: var(--tg-theme-bg-color, var(--color-bg-secondary));
    color: var(--tg-theme-text-color, var(--color-text-primary));
}

body.telegram-webapp:not([data-theme="dark"]):not(.dark-theme) .top-nav {
    background: var(--tg-theme-bg-color, var(--color-bg-primary));
    border-bottom-color: var(--tg-theme-secondary-bg-color, var(--color-border));
}

body.telegram-webapp:not([data-theme="dark"]):not(.dark-theme) .card {
    background: var(--tg-theme-bg-color, var(--color-bg-primary));
    border-color: var(--tg-theme-secondary-bg-color, var(--color-border));
}

body.telegram-webapp:not([data-theme="dark"]):not(.dark-theme) .bottom-nav {
    background: var(--tg-theme-bg-color, var(--color-bg-primary));
    border-top-color: var(--tg-theme-secondary-bg-color, var(--color-border));
}

/* Dark theme adjustments for Telegram WebApp */
body.telegram-webapp[data-theme="dark"],
body.telegram-webapp.dark-theme {
    background: var(--tg-theme-bg-color, var(--color-bg-secondary));
    color: var(--tg-theme-text-color, var(--color-text-primary));
}

/* Progress circle adjustments for dark theme */
[data-theme="dark"] .progress-circle-bg,
body.dark-theme .progress-circle-bg {
    stroke: var(--color-bg-tertiary);
}

[data-theme="dark"] .progress-circle-fill,
body.dark-theme .progress-circle-fill {
    stroke: var(--color-primary);
}

/* Chart adjustments for dark theme */
[data-theme="dark"] canvas,
body.dark-theme canvas {
    filter: brightness(0.9);
}

/* Additional dark theme adjustments */
[data-theme="dark"] .stat-card,
body.dark-theme .stat-card {
    background: var(--color-bg-primary);
    border-color: var(--color-border);
}

[data-theme="dark"] .topic-item,
body.dark-theme .topic-item {
    background: var(--color-bg-primary);
    border-color: var(--color-border);
}

[data-theme="dark"] .training-item,
body.dark-theme .training-item {
    background: var(--color-bg-primary);
    border-left-color: var(--color-primary);
}

[data-theme="dark"] .info-item,
body.dark-theme .info-item {
    background: var(--color-bg-primary);
    border-color: var(--color-border);
}

[data-theme="dark"] .bottom-nav,
body.dark-theme .bottom-nav {
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
}