/* ===== CSS Variables & Reset ===== */
:root {
    /* Color Palette - Inspired by app design */
    --primary: #5B9EF7;
    --primary-dark: #4A8AE5;
    --primary-light: #7AB4FF;
    --secondary: #FFD93D;
    --secondary-dark: #FFCC00;
    --tertiary: #6BCF7F;
    --accent: #FF6B6B;
    
    /* Gradients from app */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-blue-yellow: linear-gradient(135deg, #5B9EF7 0%, #FFD93D 100%);
    --gradient-purple-pink: linear-gradient(135deg, #667eea 0%, #f093fb 100%);
    --gradient-green-blue: linear-gradient(135deg, #6BCF7F 0%, #5B9EF7 100%);
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --black: #0A0A0A;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;
    
    /* 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;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --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 -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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 50px rgba(91, 158, 247, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-spring: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #111827;
        --gray-100: #1F2937;
        --gray-200: #374151;
        --gray-300: #4B5563;
        --gray-400: #6B7280;
        --gray-500: #9CA3AF;
        --gray-600: #D1D5DB;
        --gray-700: #E5E7EB;
        --gray-800: #F3F4F6;
        --gray-900: #F9FAFB;
    }
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--white);
    overflow-x: hidden;
    position: relative;
}

/* ===== Custom Cursor (Desktop only) ===== */
@media (pointer: fine) {
    .cursor-dot,
    .cursor-outline {
        position: fixed;
        top: 0;
        left: 0;
        transform: translate(-50%, -50%);
        pointer-events: none;
        z-index: 9999;
        mix-blend-mode: difference;
    }
    
    .cursor-dot {
        width: 8px;
        height: 8px;
        background: var(--primary);
        border-radius: 50%;
        transition: transform var(--transition-fast);
    }
    
    .cursor-outline {
        width: 30px;
        height: 30px;
        border: 2px solid var(--primary);
        border-radius: 50%;
        transition: all var(--transition-base);
        opacity: 0.5;
    }
    
    body:hover .cursor-outline {
        animation: cursorPulse 2s infinite;
    }
    
    @keyframes cursorPulse {
        0%, 100% { transform: translate(-50%, -50%) scale(1); }
        50% { transform: translate(-50%, -50%) scale(1.2); }
    }
}

/* ===== Loading Animation ===== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-blue-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-text {
    color: var(--white);
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    transition: transform var(--transition-spring);
}

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

.logo-icon {
    font-size: var(--font-size-2xl);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.nav-menu {
    display: none;
    align-items: center;
    gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    position: relative;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--primary);
}

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

.nav-cta {
    background: var(--gradient-primary);
    color: var(--white) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    transition: transform var(--transition-spring), box-shadow var(--transition-base);
}

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

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

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

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

/* Mobile Menu */
@media (max-width: 767px) {
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: orbFloat 20s ease-in-out infinite;
}

.gradient-orb-1 {
    width: 600px;
    height: 600px;
    background: var(--gradient-primary);
    top: -200px;
    right: -200px;
}

.gradient-orb-2 {
    width: 500px;
    height: 500px;
    background: var(--gradient-secondary);
    bottom: -200px;
    left: -200px;
    animation-delay: -5s;
}

.gradient-orb-3 {
    width: 400px;
    height: 400px;
    background: var(--gradient-green-blue);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

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

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
}

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

@media (min-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(91, 158, 247, 0.1);
    border: 1px solid rgba(91, 158, 247, 0.3);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary);
}

.badge-icon {
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.2) rotate(180deg); }
}

.hero-title {
    font-size: clamp(var(--font-size-3xl), 8vw, var(--font-size-7xl));
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--gray-900);
}

.stat-suffix {
    font-size: var(--font-size-2xl);
    color: var(--primary);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-spring);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-slow), height var(--transition-slow);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--gray-900);
    border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

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

.btn-icon {
    width: 24px;
    height: 24px;
}

/* ===== Phone Mockup ===== */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
}

.phone-frame {
    position: relative;
    background: var(--gray-900);
    border-radius: var(--radius-2xl);
    padding: 12px;
    box-shadow: 0 50px 100px rgba(0, 0, 0, 0.3);
    transform: perspective(1000px) rotateY(-10deg);
    animation: phoneFloat 6s ease-in-out infinite;
}

@keyframes phoneFloat {
    0%, 100% { transform: perspective(1000px) rotateY(-10deg) translateY(0); }
    50% { transform: perspective(1000px) rotateY(-10deg) translateY(-20px); }
}

.phone-screen {
    position: relative;
    width: 100%;
    aspect-ratio: 9/19;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--gray-100);
}

.screenshot {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.screenshot.active {
    opacity: 1;
}

.floating-cards {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    white-space: nowrap;
}

.card-emoji {
    font-size: var(--font-size-xl);
}

.card-1 {
    top: 20%;
    left: -60px;
    animation: cardFloat1 8s ease-in-out infinite;
}

.card-2 {
    top: 50%;
    right: -60px;
    animation: cardFloat2 8s ease-in-out infinite;
}

.card-3 {
    bottom: 20%;
    left: -40px;
    animation: cardFloat3 8s ease-in-out infinite;
}

@keyframes cardFloat1 {
    0%, 100% { transform: translate(0, 0) rotate(-5deg); }
    50% { transform: translate(10px, -10px) rotate(5deg); }
}

@keyframes cardFloat2 {
    0%, 100% { transform: translate(0, 0) rotate(5deg); }
    50% { transform: translate(-10px, 10px) rotate(-5deg); }
}

@keyframes cardFloat3 {
    0%, 100% { transform: translate(0, 0) rotate(-3deg); }
    50% { transform: translate(5px, -15px) rotate(3deg); }
}

/* ===== Features Section ===== */
.features {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-badge {
    display: inline-block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    position: relative;
    transition: all var(--transition-base);
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card.featured {
    background: var(--gradient-primary);
    color: var(--white);
    transform: scale(1.05);
}

.feature-card.featured .feature-title,
.feature-card.featured .feature-description {
    color: var(--white);
}

.feature-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--white);
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
}

.feature-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.flashcard-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.puzzle-gradient {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.quiz-gradient {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.training-gradient {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.stats-gradient {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

.category-gradient {
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
}

.feature-icon {
    width: 30px;
    height: 30px;
    color: var(--white);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.feature-stats {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.stat-badge {
    background: rgba(91, 158, 247, 0.1);
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.feature-card.featured .stat-badge {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

/* ===== How It Works Section ===== */
.how-it-works {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.steps-container {
    position: relative;
    margin-top: var(--spacing-3xl);
}

.steps-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
    transform: translateX(-50%);
    display: none;
}

@media (min-width: 768px) {
    .steps-line {
        display: block;
    }
}

.steps-line-progress {
    width: 100%;
    height: 0;
    background: var(--gradient-primary);
    transition: height 1s ease;
}

.step-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
    position: relative;
}

@media (min-width: 768px) {
    .step-item:nth-child(even) {
        flex-direction: row-reverse;
    }
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
}

.step-content {
    flex: 1;
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

.step-icon-wrapper {
    width: 100%;
    max-width: 300px;
    margin-bottom: var(--spacing-lg);
}

.step-screenshot {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.step-icon svg {
    width: 40px;
    height: 40px;
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.step-description {
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===== Statistics Section ===== */
.statistics {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.statistics::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,106.7C1248,96,1344,96,1392,96L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

.stats-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

@media (min-width: 992px) {
    .stats-wrapper {
        grid-template-columns: 1fr 1fr;
    }
}

.stats-content {
    color: var(--white);
}

.stats-title {
    font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.stats-description {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
}

.achievement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.achievement-text {
    display: flex;
    flex-direction: column;
}

.achievement-text strong {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.achievement-text span {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.stats-visual {
    position: relative;
}

.chart-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

#progressChart {
    width: 100%;
    height: 300px;
}

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

.live-stat-item {
    text-align: center;
    color: var(--white);
}

.live-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
}

.live-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* ===== Testimonials Section ===== */
.testimonials {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.testimonial-card.featured {
    background: var(--gradient-primary);
    color: var(--white);
    transform: scale(1.05);
}

.testimonial-rating {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

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

.testimonial-text {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    color: inherit;
}

.testimonial-card:not(.featured) .testimonial-text {
    color: var(--gray-700);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.testimonial-card.featured .author-avatar {
    background: rgba(255, 255, 255, 0.2);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-weight: 700;
}

.author-info span {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* ===== Download Section ===== */
.download {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
    position: relative;
    overflow: hidden;
}

.download-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.gradient-orb-4 {
    width: 400px;
    height: 400px;
    background: var(--gradient-green-blue);
    top: -100px;
    left: -100px;
    filter: blur(150px);
    opacity: 0.3;
}

.gradient-orb-5 {
    width: 500px;
    height: 500px;
    background: var(--gradient-purple-pink);
    bottom: -100px;
    right: -100px;
    filter: blur(150px);
    opacity: 0.3;
}

.download-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.download-title {
    font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.download-description {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    margin-bottom: var(--spacing-2xl);
}

.download-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    background: var(--black);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-spring);
    box-shadow: var(--shadow-lg);
}

.download-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

.ios-btn:hover {
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
}

.android-btn:hover {
    background: linear-gradient(135deg, #3DDC84 0%, #4285F4 100%);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.store-icon {
    width: 32px;
    height: 32px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-label {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

.btn-platform {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

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

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

.download-feature svg {
    width: 20px;
    height: 20px;
    color: var(--tertiary);
}

/* ===== Footer ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 3fr;
    }
}

.footer-brand {
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--white);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    margin-bottom: var(--spacing-lg);
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-4px);
}

.social-links svg {
    width: 20px;
    height: 20px;
    fill: var(--white);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
}

.footer-column h4 {
    color: var(--white);
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-column a {
    display: block;
    color: var(--gray-400);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.language-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
}

.language-selector svg {
    width: 20px;
    height: 20px;
    stroke: var(--gray-400);
}

.language-selector select {
    background: none;
    border: none;
    color: var(--gray-300);
    outline: none;
    cursor: pointer;
}

/* ===== Animations on Scroll ===== */
[data-aos] {
    opacity: 0;
    transition-property: transform, opacity;
}

[data-aos="fade-up"] {
    transform: translateY(40px);
}

[data-aos="fade-down"] {
    transform: translateY(-40px);
}

[data-aos="fade-left"] {
    transform: translateX(40px);
}

[data-aos="fade-right"] {
    transform: translateX(-40px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translate(0);
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 768px) {
    .hero {
        padding: calc(60px + var(--spacing-2xl)) 0 var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .phone-mockup {
        max-width: 250px;
    }
    
    .floating-card {
        display: none;
    }
    
    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card.featured {
        transform: scale(1);
    }
}

/* ===== Performance Optimizations ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}
/* ===== Early Access Form Styles ===== */
.early-access-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.early-access-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

@media (min-width: 768px) {
    .early-access-form {
        flex-direction: row;
        align-items: center;
    }
}

.early-access-input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border: 2px solid rgba(91, 158, 247, 0.3);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--gray-900);
    transition: all 0.3s ease;
}

.early-access-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(91, 158, 247, 0.1);
}

.early-access-input::placeholder {
    color: var(--gray-400);
}

.form-note {
    text-align: center;
    color: var(--gray-300);
    font-size: 0.875rem;
    margin-top: 1rem;
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Success Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 15% auto;
    padding: 3rem;
    border-radius: 20px;
    max-width: 500px;
    text-align: center;
    color: white;
    animation: modalFadeIn 0.5s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    color: white;
    cursor: pointer;
    background: none;
    border: none;
}

.modal-close:hover {
    transform: scale(1.1);
}