/* Exchango FX Index Page - Comprehensive Styling System */
/* Mobile-first responsive design with modern aesthetic */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Colors - Dark Theme with Blue Accent */
    --primary-blue: #007AFF;
    --primary-blue-dark: #0056CC;
    --primary-blue-light: #4DA3FF;
    --accent-orange: #FF9500;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-tertiary: rgba(255, 255, 255, 0.6);
    --background-primary: #000000;
    --background-secondary: #1C1C1E;
    --background-tertiary: #2C2C2E;
    --background-card: rgba(28, 28, 30, 0.8);
    --background-glass: rgba(255, 255, 255, 0.1);
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow-light: rgba(0, 122, 255, 0.2);
    --shadow-dark: rgba(0, 0, 0, 0.3);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-heavy: 800;
    
    /* Spacing */
    --space-xs: clamp(4px, 1vw, 8px);
    --space-sm: clamp(8px, 2vw, 16px);
    --space-md: clamp(16px, 4vw, 32px);
    --space-lg: clamp(32px, 6vw, 64px);
    --space-xl: clamp(64px, 10vw, 120px);
    --space-2xl: clamp(120px, 15vw, 200px);
    
    /* Border Radius */
    --radius-sm: clamp(8px, 2vw, 12px);
    --radius-md: clamp(12px, 3vw, 20px);
    --radius-lg: clamp(20px, 4vw, 32px);
    --radius-xl: clamp(32px, 5vw, 48px);
    
    /* Container */
    --container-max-width: min(95vw, 1200px);
    --container-padding: clamp(20px, 5vw, 40px);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.5;
    overscroll-behavior: none;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    background: linear-gradient(180deg, var(--background-primary) 0%, var(--background-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    overscroll-behavior: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    touch-action: manipulation;
    position: relative;
}

/* ===== ACCESSIBILITY ===== */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-blue);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: var(--radius-sm);
    z-index: 1000;
    transition: var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* Focus states */
*:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: var(--font-weight-heavy);
    letter-spacing: clamp(-1px, -0.2vw, -2px);
}

h2 {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: var(--font-weight-semibold);
}

h4 {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: var(--font-weight-semibold);
}

p {
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

/* ===== LAYOUT COMPONENTS ===== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

.section-subtitle {
    font-size: clamp(1rem, 3vw, 1.3rem);
    color: var(--text-secondary);
    font-weight: var(--font-weight-normal);
    max-width: 70ch;
    margin: 0 auto;
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--space-xl) 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Language Selector Dropdown */
.language-selector-dropdown {
    position: absolute;
    top: calc(var(--space-md) + var(--space-sm));
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
}

.language-dropdown-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: clamp(10px, 2.5vw, 14px) clamp(14px, 3.5vw, 18px);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: clamp(20px, 4vw, 30px);
    color: white;
    font-size: clamp(0.85rem, 2.2vw, 0.95rem);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    white-space: nowrap;
    min-width: clamp(120px, 25vw, 160px);
}

.language-dropdown-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-1px);
}

.language-dropdown-btn.active {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-blue);
    border-color: rgba(255, 255, 255, 0.8);
}

.current-language {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex: 1;
}

.language-icon {
    width: clamp(16px, 4vw, 18px);
    height: clamp(16px, 4vw, 18px);
}

.dropdown-arrow {
    width: clamp(14px, 3.5vw, 16px);
    height: clamp(14px, 3.5vw, 16px);
    transition: transform var(--transition-normal);
}

.language-dropdown-btn[aria-expanded="true"] .dropdown-arrow {
    transform: rotate(180deg);
}

.language-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: rgba(28, 28, 30, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: clamp(12px, 3vw, 16px);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    min-width: clamp(180px, 35vw, 220px);
    overflow: hidden;
    outline: none; /* 포커스 아웃라인 제거 */
}

.language-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: clamp(8px, 2vw, 12px);
    padding: clamp(12px, 3vw, 16px) clamp(16px, 4vw, 20px);
    color: white;
    text-decoration: none;
    font-size: clamp(0.9rem, 2.2vw, 1rem);
    font-weight: var(--font-weight-normal);
    transition: background-color var(--transition-fast);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    outline: none; /* 포커스 아웃라인 제거 */
}

.language-option:last-child {
    border-bottom: none;
}

.language-option:hover {
    background: rgba(255, 255, 255, 0.1);
}

.language-option.active {
    background: rgba(0, 122, 255, 0.2);
    color: var(--primary-blue-light);
    font-weight: var(--font-weight-medium);
}

.language-option .flag {
    font-size: clamp(16px, 4vw, 18px);
    line-height: 1;
}

.language-option .native {
    font-size: clamp(0.75rem, 1.8vw, 0.85rem);
    color: rgba(255, 255, 255, 0.7);
    margin-left: auto;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .language-selector-dropdown {
        top: calc(var(--space-sm) + var(--space-xs));
        left: 50%;
        transform: translateX(-50%);
    }
    
    .language-dropdown-btn {
        padding: 8px 12px;
        min-width: 100px;
        font-size: 0.8rem;
    }
    
    .language-dropdown-menu {
        min-width: 160px;
    }
    
    .language-option {
        padding: 10px 14px;
        font-size: 0.85rem;
    }
    
    .language-option .native {
        font-size: 0.7rem;
    }
}

/* Desktop optimizations */
@media (min-width: 1200px) {
    .language-dropdown-btn {
        padding: 14px 20px;
        min-width: 180px;
        font-size: 1rem;
    }
    
    .language-dropdown-menu {
        min-width: 240px;
    }
    
    .language-option {
        padding: 16px 22px;
        font-size: 1rem;
    }
}

/* Hero Content */
.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: min(90vw, 1000px);
    margin: 0 auto 20px;
}

.app-icon {
    width: clamp(80px, 15vw, 120px);
    height: clamp(80px, 15vw, 120px);
    margin: clamp(60px, 12vw, 100px) auto clamp(8px, 2vw, 16px);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-icon-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: clamp(18px, 4vw, 28px);
    transition: var(--transition-normal);
}

.app-icon-image:hover {
    transform: translateY(-4px) scale(1.02);
}

.hero h1 {
    color: white;
    margin: var(--space-sm) 0;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-tagline {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    color: rgba(255, 255, 255, 0.95);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-sm);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.3rem);
    color: rgba(255, 255, 255, 0.85);
    font-weight: var(--font-weight-normal);
    line-height: 1.5;
    margin-bottom: var(--space-lg);
    max-width: 80%;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(140px, 25vw, 180px), 1fr));
    gap: var(--space-md);
    margin: var(--space-xl) 0;
    max-width: min(90vw, 800px);
    margin-left: auto;
    margin-right: auto;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    text-align: center;
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 122, 255, 0.2);
    background: rgba(255, 255, 255, 0.15);
}

.stat-icon {
    width: clamp(40px, 8vw, 56px);
    height: clamp(40px, 8vw, 56px);
    background: linear-gradient(135deg, var(--accent-orange) 0%, #FF7A00 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
    color: white;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
}

.stat-number {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: var(--font-weight-heavy);
    color: white;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    color: rgba(255, 255, 255, 0.8);
    font-weight: var(--font-weight-medium);
}

/* Hero CTAs */
.hero-ctas {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-xl);
}

.cta-btn {
    padding: clamp(12px, 3vw, 18px) clamp(24px, 6vw, 36px);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: clamp(140px, 30vw, 200px);
}

.cta-btn.primary {
    background: white;
    color: var(--primary-blue);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

.cta-btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.3);
    background: #f8f9fa;
}

.cta-btn.secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.cta-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-3px);
}

/* ===== MAIN SECTIONS ===== */
section {
    padding: var(--space-2xl) 0;
}

/* Features Section */
.features {
    background: rgba(29, 29, 30, 1);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: var(--space-xl);
}

.feature-card {
    background: var(--background-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px var(--shadow-light);
    border-color: rgba(0, 122, 255, 0.4);
}

.feature-image {
    text-align: center;
    padding: var(--space-lg) var(--space-md) 0;
    position: relative;
}

.device-screenshot {
    max-width: clamp(200px, 40vw, 280px);
    height: auto;
    border-radius: clamp(20px, 4vw, 32px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    transition: var(--transition-normal);
}

.feature-card:hover .device-screenshot {
    transform: scale(1.02);
}

/* Feature Gallery Styles */
.feature-gallery {
    text-align: center;
    padding: var(--space-lg) var(--space-md) 0;
    position: relative;
}

.gallery-container {
    position: relative;
    display: inline-block;
    max-width: clamp(200px, 40vw, 280px);
    border-radius: clamp(20px, 4vw, 32px);
    overflow: hidden;
}

.gallery-track {
    display: flex;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
}

.gallery-item {
    flex: 0 0 100%;
    width: 100%;
}

.gallery-item .device-screenshot {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0;
    box-shadow: none;
    transition: var(--transition-normal);
}

/* Prevent gallery images from scaling on hover */
.feature-gallery .gallery-container:hover .device-screenshot,
.gallery-item:hover .device-screenshot {
    transform: none;
    box-shadow: none;
}

/* Prevent feature card hover effects from affecting gallery images */
.feature-card:hover .feature-gallery .device-screenshot {
    transform: none;
    box-shadow: none;
}

.gallery-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    transform: translateY(-50%);
    padding: 0 var(--space-xs);
}

.gallery-btn {
    width: clamp(36px, 8vw, 48px);
    height: clamp(36px, 8vw, 48px);
    background: rgba(0, 122, 255, 0.9);
    backdrop-filter: blur(15px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    transition: var(--transition-fast);
    pointer-events: all;
    opacity: 0.8;
    transform: scale(1);
    box-shadow: 0 4px 20px rgba(0, 122, 255, 0.3);
}

.gallery-container:hover .gallery-btn {
    opacity: 1;
    transform: scale(1.05);
}

.gallery-btn:hover {
    background: rgba(0, 122, 255, 1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.15);
    box-shadow: 0 6px 25px rgba(0, 122, 255, 0.5);
}

.gallery-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: scale(0.9);
    background: rgba(100, 100, 100, 0.5);
    box-shadow: none;
}

/* Gallery Button Direction Colors */
.gallery-btn.prev {
    background: rgba(0, 122, 255, 0.9); /* Blue for previous */
    box-shadow: 0 4px 20px rgba(0, 122, 255, 0.3);
}

.gallery-btn.next {
    background: rgba(0, 122, 255, 0.9); /* Blue for next */
    box-shadow: 0 4px 20px rgba(0, 122, 255, 0.3);
}

.gallery-btn.prev:hover {
    background: rgba(0, 122, 255, 1);
    box-shadow: 0 6px 25px rgba(0, 122, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.5);
}

.gallery-btn.next:hover {
    background: rgba(0, 122, 255, 1);
    box-shadow: 0 6px 25px rgba(0, 122, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.5);
}

.gallery-indicators {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) 0;
    position: absolute;
    bottom: var(--space-sm);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: var(--space-xs) var(--space-sm);
}

.indicator {
    width: clamp(6px, 1.5vw, 8px);
    height: clamp(6px, 1.5vw, 8px);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition-fast);
}

.indicator.active {
    background: white;
    transform: scale(1.2);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

/* Touch-friendly gallery controls for mobile */
@media (max-width: 768px) {
    .gallery-btn {
        opacity: 1;
        transform: scale(1);
    }
    
    .gallery-btn.prev {
        background: rgba(0, 122, 255, 0.8);
    }
    
    .gallery-btn.next {
        background: rgba(0, 122, 255, 0.8);
    }
    
    .gallery-btn.prev:hover {
        background: rgba(0, 122, 255, 0.9);
    }
    
    .gallery-btn.next:hover {
        background: rgba(0, 122, 255, 0.9);
    }
    
    .gallery-controls {
        padding: 0 var(--space-sm);
    }
    
    .gallery-indicators {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        background: transparent;
        backdrop-filter: none;
        padding: var(--space-sm) 0 0;
    }
}

.feature-content {
    padding: var(--space-lg);
}

.feature-icon {
    width: clamp(48px, 10vw, 64px);
    height: clamp(48px, 10vw, 64px);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    margin-bottom: var(--space-md);
}

.feature-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: clamp(1.3rem, 3.5vw, 1.6rem);
}

.feature-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    color: var(--text-secondary);
    padding: var(--space-xs) 0;
    position: relative;
    padding-left: var(--space-md);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: var(--font-weight-bold);
}

/* Technical Excellence Section */
.tech-excellence {
    background: var(--background-primary);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    max-width: min(90vw, 800px);
    margin: 0 auto;
}

.tech-card {
    background: var(--background-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: var(--transition-normal);
}

.tech-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px var(--shadow-light);
    background: rgba(28, 28, 30, 0.9);
}

.tech-icon {
    width: clamp(56px, 12vw, 72px);
    height: clamp(56px, 12vw, 72px);
    background: linear-gradient(135deg, var(--accent-orange) 0%, #FF7A00 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin: 0 auto var(--space-md);
    transition: var(--transition-normal);
}

.tech-card:hover .tech-icon {
    transform: scale(1.1) rotate(5deg);
}

.tech-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: clamp(1.2rem, 3vw, 1.4rem);
}

.tech-card p {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Benefits Section */
.benefits {
    background: linear-gradient(180deg, var(--background-tertiary) 0%, var(--background-secondary) 100%);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: var(--space-lg);
}

.benefit-card {
    background: var(--background-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: var(--transition-normal);
}

.benefit-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px var(--shadow-light);
    border-color: var(--primary-blue);
}

.benefit-icon {
    width: clamp(56px, 12vw, 72px);
    height: clamp(56px, 12vw, 72px);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin: 0 auto var(--space-md);
}

.benefit-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: clamp(1.2rem, 3vw, 1.4rem);
}

.benefit-card p {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Download Section */
.download-section {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    position: relative;
    overflow: hidden;
}

.download-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.download-text {
    text-align: center;
}

.download-text h2 {
    color: white;
    margin-bottom: var(--space-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.download-subtitle {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-md);
}

.download-desc {
    font-size: clamp(1rem, 3vw, 1.2rem);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
    max-width: 60ch;
    margin-left: auto;
    margin-right: auto;
}

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

/* Store Badge Styles */
.store-badge {
    display: inline-block;
    text-decoration: none;
    transition: all 0.3s ease;
    margin: 0 var(--space-sm);
}

.store-badge-img {
    height: 60px;
    width: 180px;
    display: block;
    transition: all 0.3s ease;
    border-radius: 8px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
    object-fit: contain;
}

.store-badge:hover {
    transform: translateY(-3px) scale(1.02);
}

.store-badge:hover .store-badge-img {
    filter: brightness(1.05) drop-shadow(0 6px 16px rgba(0, 0, 0, 0.25));
}

.store-badge:active {
    transform: translateY(-1px) scale(1.01);
    transition: all 0.1s ease;
}

/* Legacy download-btn styles for compatibility */
.download-btn {
    display: inline-block;
}

.platform-icon {
    width: clamp(24px, 5vw, 32px);
    height: clamp(24px, 5vw, 32px);
    flex-shrink: 0;
}

.download-visual {
    text-align: center;
}

.phone-mockup {
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.phone-carousel {
    position: relative;
    width: clamp(200px, 50vw, 320px);
    height: auto;
}

.phone-carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.phone-screenshot {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    border-radius: clamp(25px, 5vw, 40px);
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    /*box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);*/
}

.phone-screenshot.active {
    opacity: 1;
    transform: translateX(0);
}

.phone-screenshot.prev {
    opacity: 0;
    transform: translateX(-100%);
}

.phone-screenshot:first-child {
    position: relative;
}

.phone-mockup:hover .phone-screenshot.active {
    transform: translateX(0) scale(1.05) rotateY(5deg);
    /*box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5);*/
}

/* ===== FOOTER ===== */
.footer {
    background: var(--background-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.footer-logo-image {
    width: clamp(40px, 8vw, 56px);
    height: clamp(40px, 8vw, 56px);
    border-radius: clamp(8px, 2vw, 12px);
}

.footer-brand-name {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: clamp(0.9rem, 2.5vw, 1rem);
}

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

.footer-section h4 {
    color: var(--text-primary);
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    margin-bottom: var(--space-md);
    font-weight: var(--font-weight-semibold);
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

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

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: clamp(0.9rem, 2vw, 1rem);
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.copyright {
    color: var(--text-tertiary);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
}

.footer-language {
    display: flex;
    gap: var(--space-sm);
}

.footer-lang-btn {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.footer-lang-btn:hover {
    color: var(--primary-blue);
    background: rgba(0, 122, 255, 0.1);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: clamp(48px, 10vw, 56px);
    height: clamp(48px, 10vw, 56px);
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px var(--shadow-light);
    transition: var(--transition-normal);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px var(--shadow-light);
}

.back-to-top:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.3);
}

.back-to-top:active {
    transform: translateY(-1px) scale(1.02);
    background: var(--primary-blue-dark);
    box-shadow: 0 5px 15px var(--shadow-light);
}

.back-to-top:focus:not(:focus-visible) {
    outline: none;
    box-shadow: 0 8px 25px var(--shadow-light);
}

/* ===== RESPONSIVE DESIGN ENHANCEMENTS ===== */
@media (min-width: 768px) {
    .download-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .download-text {
        text-align: left;
    }
    
    .download-buttons {
        justify-content: flex-start;
    }
    
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-ctas {
        gap: var(--space-lg);
    }
    
    .download-buttons {
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    .tech-grid {
        grid-template-columns: 1fr;
        max-width: min(90vw, 500px);
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
        max-width: min(90vw, 300px);
    }
    
    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-btn {
        width: 100%;
        max-width: 280px;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .store-badge {
        margin: var(--space-sm) 0;
        width: 100%;
        max-width: 240px;
    }
    
    .store-badge-img {
        height: 56px;
        width: 168px;
        margin: 0 auto;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
        max-width: min(90vw, 400px);
    }
    
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

/* Price loading spinner */
.price-loading {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.spin-icon {
    animation: spin 1s linear infinite;
    opacity: 0.7;
}

.hero-content {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    animation-fill-mode: backwards;
    animation-delay: 0.2s;
}

.stat-card:hover .stat-icon {
    animation: pulse 0.6s ease-in-out;
}

/* ===== SCROLL ANIMATION IMPROVEMENTS ===== */
/* Improved animation classes for smoother scroll animations */
.animate-in {
    /* Animation handled by JavaScript for better performance */
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Enhanced will-change for smooth animations */
.feature-card,
.tech-card,
.benefit-card,
.stat-card,
.section-header {
    will-change: transform, opacity;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .feature-card,
    .tech-card,
    .benefit-card,
    .stat-card,
    .section-header {
        transition: none !important;
        animation: none !important;
        transform: none !important;
        opacity: 1 !important;
    }
    
    .animate-in {
        animation: none !important;
    }
}

/* Performance optimization for animations */
.feature-card,
.tech-card,
.benefit-card,
.stat-card {
    transform: translateZ(0); /* Force hardware acceleration */
    backface-visibility: hidden;
}

/* ===== COMING SOON OVERLAY ===== */
.store-badge.coming-soon {
    position: relative;
    cursor: not-allowed;
    display: inline-block;
}

.store-badge.coming-soon .store-badge-img {
    opacity: 0.5;
    filter: grayscale(100%);
}

.store-badge.coming-soon .coming-soon-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--accent-orange);
    color: white;
    padding: 3px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(255, 149, 0, 0.3);
    outline: solid 1px darkred;
}

/* ===== PRINT STYLES ===== */
@media print {
    .language-selector,
    .hero-ctas,
    .download-buttons,
    .back-to-top {
        display: none;
    }
    
    .hero {
        background: white;
        color: black;
        min-height: auto;
        padding: 2rem 0;
    }
    
    body {
        background: white;
        color: black;
    }
}