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

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

:root {
    /* Color Palette - Matching App Design */
    --primary-purple: #673AB7;
    --primary-purple-light: #9C27B0;
    --primary-purple-dark: #512DA8;
    --background-light: #F8F8F8;
    --background-white: #FFFFFF;
    --text-dark: #212121;
    --text-medium: #757575;
    --text-light: #9E9E9E;
    --success-green: #4CAF50;
    --success-green-light: #E8F5E9;
    --warning-orange: #FFC107;
    --warning-orange-light: #FFFDE7;
    --error-red: #F44336;
    --border-light: #E0E0E0;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
    --shadow-heavy: rgba(0, 0, 0, 0.25);
    
    /* Typography */
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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;
    
    /* 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: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Header */
.header {
    background: var(--background-white);
    box-shadow: 0 2px 8px var(--shadow-light);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: 0 4px 16px var(--shadow-medium);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
}

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

.logo-image {
    width: 56px;
    height: 56px;
    transition: all var(--transition-normal);
}

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

.app-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-dark);
}

.nav {
    display: flex;
    gap: var(--spacing-xl);
}

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

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

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

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

/* Hero Section */
.hero {
    padding: 120px 0 var(--spacing-3xl);
    background: var(--background-white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(103, 58, 183, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(156, 39, 176, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

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

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--primary-purple);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

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

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

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-purple);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-medium);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
}

.phone-mockup {
    position: relative;
    max-width: 300px;
    margin: 0 auto;
    animation: phoneFloat 4s ease-in-out infinite;
}

.phone-mockup:hover {
    transform: translateY(-8px) scale(1.02);
}

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

.app-screenshot {
    width: 100%;
    height: auto;
    display: block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
}

.btn-primary {
    background: var(--primary-purple);
    color: var(--background-white);
    box-shadow: 0 4px 12px rgba(103, 58, 183, 0.3);
    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 ease;
}

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

.btn-primary:hover {
    background: var(--primary-purple-dark);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(103, 58, 183, 0.5);
}

.btn-secondary {
    background: var(--background-white);
    color: var(--primary-purple);
    border: 2px solid var(--primary-purple);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--primary-purple);
    transition: width 0.3s ease;
    z-index: -1;
}

.btn-secondary:hover::before {
    width: 100%;
}

.btn-secondary:hover {
    color: var(--background-white);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(103, 58, 183, 0.3);
}

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

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

/* Sections */
.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

/* Features Section */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--background-light);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(103, 58, 183, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(156, 39, 176, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

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

.feature-card {
    background: var(--background-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px var(--shadow-light);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(103, 58, 183, 0.1), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 30px var(--shadow-medium);
    border-color: var(--primary-purple);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--text-medium);
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: var(--spacing-3xl) 0;
    background: var(--background-white);
}

.screenshots-container {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
}

.screenshots-carousel {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.screenshots-carousel::-webkit-scrollbar {
    display: none;
}

.screenshots-carousel.active {
    cursor: grabbing;
}

.screenshots-carousel {
    cursor: grab;
}

.screenshot-item {
    background: transparent;
    border-radius: var(--radius-lg);
    overflow: visible;
    box-shadow: none;
    transition: all var(--transition-normal);
    position: relative;
    flex: 0 0 300px;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.screenshot-item:hover {
    transform: translateY(-8px) scale(1.05);
}

.screenshot-image {
    width: 100%;
    max-width: 280px;
    height: auto;
    object-fit: contain;
    display: block;
    transition: all var(--transition-normal);
}

.screenshot-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-dark);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
    margin: 0;
    text-align: center;
}

.screenshot-description {
    color: var(--text-medium);
    padding: 0;
    margin: 0;
    line-height: 1.5;
    text-align: center;
    max-width: 280px;
}

/* Desktop grid fallback */
@media (min-width: 1024px) {
    .screenshots-carousel {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        overflow-x: visible;
        scroll-snap-type: none;
        gap: var(--spacing-xl);
    }
    
    .screenshot-item {
        flex: none;
    }
}

/* Download Section */
.download {
    padding: var(--spacing-3xl) 0;
    background: var(--background-light);
}

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

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

.download-details {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    font-weight: 500;
    color: var(--text-medium);
}

.detail-value {
    font-weight: 600;
    color: var(--text-dark);
}

.download-actions {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.download-warning {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    background: var(--warning-orange-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--warning-orange);
}

.warning-icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.warning-text {
    color: var(--text-dark);
    margin: 0;
    line-height: 1.5;
}

.download-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.download-image .app-screenshot {
    max-width: 300px;
    width: 100%;
    height: auto;
}

/* Tutorial Section */
.tutorial {
    padding: var(--spacing-3xl) 0;
    background: var(--background-white);
}

.tutorial-description {
    font-size: var(--font-size-lg);
    color: var(--text-medium);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.tutorial-steps {
    max-width: 800px;
    margin: 0 auto;
}

.tutorial-step {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
    align-items: flex-start;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--primary-purple);
    color: var(--background-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.step-description {
    color: var(--text-medium);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.step-image {
    background: var(--background-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 16px var(--shadow-light);
}

.placeholder-image {
    width: 200px;
    height: 150px;
    background: var(--background-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-light);
}

.placeholder-text {
    color: var(--text-light);
    font-style: italic;
}

.video-container {
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.video-wrapper {
    background: var(--background-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px var(--shadow-medium);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.video-credits {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--background-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.credits-text {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-medium);
}

.credits-label {
    font-weight: 500;
    color: var(--text-dark);
}

.credits-link {
    color: var(--primary-purple);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.credits-link:hover {
    color: var(--primary-purple-dark);
    text-decoration: underline;
}

.credits-separator {
    margin: 0 var(--spacing-sm);
    color: var(--text-light);
}

.tutorial-tips {
    background: var(--background-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px var(--shadow-light);
    margin-top: var(--spacing-3xl);
}

.tips-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
}

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

.tips-list li {
    padding: var(--spacing-sm) 0;
    color: var(--text-medium);
    position: relative;
    padding-left: var(--spacing-lg);
}

.tips-list li::before {
    content: '•';
    color: var(--primary-purple);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Privacy Section */
.privacy {
    padding: var(--spacing-3xl) 0;
    background: var(--background-light);
}

.privacy-content {
    display: block;
}

.privacy-card {
    background: var(--background-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.privacy-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.privacy-description {
    color: var(--text-medium);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

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

.privacy-list li {
    padding: var(--spacing-sm) 0;
    color: var(--text-medium);
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--background-white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-logo-image {
    width: 40px;
    height: 40px;
    transition: all var(--transition-normal);
}

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

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.footer-description {
    color: var(--text-light);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-link {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid #424242;
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-copyright {
    color: var(--text-light);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        gap: var(--spacing-3xl);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .download-content {
        gap: var(--spacing-2xl);
    }
    
    .tutorial-grid {
        gap: var(--spacing-xl);
    }
    
    .privacy-content {
        gap: var(--spacing-2xl);
    }
    
    .screenshot-item {
        flex: 0 0 260px;
    }
    
    .screenshot-image {
        max-width: 260px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .header .container {
        padding: var(--spacing-md);
    }
    
    .hero {
        padding: 120px 0 var(--spacing-2xl);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-image .app-screenshot {
        max-width: 280px;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .download-actions {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .download-image {
        order: -1;
    }
    
    .download-image .app-screenshot {
        max-width: 250px;
    }
    
    .tutorial-step {
        flex-direction: column;
        text-align: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .tutorial-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .video-container {
        max-width: 100%;
        margin: 0 auto var(--spacing-2xl);
    }
    
    .video-wrapper {
        margin-bottom: var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .privacy-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .screenshots-carousel {
        gap: var(--spacing-md);
        padding: var(--spacing-md) 0;
    }
    
    .screenshot-item {
        flex: 0 0 250px;
    }
    
    .screenshot-image {
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header .container {
        padding: var(--spacing-sm);
    }
    
    .nav {
        width: calc(100vw - 2rem);
        max-width: 260px;
        right: 1rem;
    }
    
    .nav-link {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .hamburger {
        width: 36px;
        height: 36px;
    }
    
    .hamburger-line {
        width: 18px;
    }
    
    .hero {
        padding: 80px 0 var(--spacing-xl);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-md);
    }
    
    .hero-description {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }
    
    .hero-image {
        margin-top: var(--spacing-xl);
    }
    
    .phone-mockup {
        max-width: 280px;
        margin: 0 auto;
    }
    
    .app-screenshot {
        max-width: 100%;
        height: auto;
        border-radius: 20px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .screenshots-carousel {
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) 0;
    }
    
    .screenshot-item {
        flex: 0 0 220px;
    }
    
    .screenshot-image {
        max-width: 220px;
    }
    
    .screenshot-title {
        font-size: var(--font-size-md);
        padding: var(--spacing-md) 0 var(--spacing-xs);
    }
    
    .screenshot-description {
        font-size: var(--font-size-sm);
        max-width: 220px;
    }
    
    .download-image .app-screenshot {
        max-width: 200px;
    }
    
    .download-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .tutorial-step {
        gap: var(--spacing-lg);
    }
    
    .step-content {
        text-align: left;
    }
    
    .step-title {
        font-size: var(--font-size-lg);
    }
    
    .step-description {
        font-size: var(--font-size-sm);
    }
    
    .privacy-content {
        grid-template-columns: 1fr;
    }
    
    .privacy-card {
        padding: var(--spacing-lg);
    }
    
    .footer-content {
        text-align: center;
    }
    
    .footer-links {
        text-align: center;
    }
}

@media (max-width: 375px) and (min-width: 321px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header .container {
        padding: var(--spacing-sm);
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .nav {
        width: 90%;
        max-width: 260px;
        padding: 60px var(--spacing-sm) var(--spacing-lg);
    }
    
    .nav-link {
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs) 0;
    }
    
    .hero {
        padding: 70px 0 var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-md);
    }
    
    .hero-description {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }
    
    .hero-image {
        margin-top: var(--spacing-lg);
    }
    
    .phone-mockup {
        max-width: 260px;
        margin: 0 auto;
    }
    
    .app-screenshot {
        max-width: 100%;
        height: auto;
        border-radius: 18px;
        box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
    }
}

@media (max-width: 320px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .header .container {
        padding: var(--spacing-xs);
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .nav {
        width: 95%;
        max-width: 240px;
        padding: 50px var(--spacing-xs) var(--spacing-md);
    }
    
    .nav-link {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) 0;
    }
    
    .hero {
        padding: 60px 0 var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
    }
    
    .phone-mockup {
        max-width: 250px;
    }
    
    .app-screenshot {
        border-radius: 15px;
    }
    
    .hero-description {
        font-size: var(--font-size-xs);
    }
    
    .screenshot-item {
        flex: 0 0 200px;
    }
    
    .screenshot-image {
        max-width: 200px;
    }
    
    .screenshot-title {
        font-size: var(--font-size-sm);
    }
    
    .screenshot-description {
        font-size: var(--font-size-xs);
        max-width: 200px;
    }
    
    .download-image .app-screenshot {
        max-width: 180px;
    }
    
    .feature-card {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}

/* Privacy Policy Page Styles */
.privacy-policy {
    padding: 120px 0 var(--spacing-2xl);
    min-height: 100vh;
    background: var(--background-light);
}

.privacy-article {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    padding: var(--spacing-3xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-lg);
    line-height: 1.8;
}

.privacy-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 2px solid var(--primary-light);
}

.privacy-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: #333;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.privacy-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    color: #666;
    font-size: var(--font-size-base);
}

.privacy-date {
    font-weight: 600;
    color: var(--primary);
}

.privacy-separator {
    color: #ccc;
}

.privacy-version {
    background: var(--primary-light);
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.privacy-content {
    color: #444;
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.privacy-content h2 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #333;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    text-align: left;
    width: 100%;
}

.privacy-content h2:first-child {
    margin-top: 0;
}

.privacy-content p {
    margin-bottom: var(--spacing-md);
    color: #444;
    text-align: left;
    width: 100%;
}

.privacy-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    text-align: left;
    width: 100%;
}

.privacy-content li {
    margin-bottom: var(--spacing-xs);
    color: #444;
}

.contact-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

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

.privacy-footer {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-2xl);
    text-align: center;
    border: 1px solid #eee;
}

.privacy-footer p {
    margin: 0;
    color: #666;
    font-size: var(--font-size-sm);
}

.privacy-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-3xl);
    flex-wrap: wrap;
    padding-top: var(--spacing-2xl);
    border-top: 2px solid var(--primary-light);
}

/* Privacy Summary Styles */
.privacy-summary {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

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

.privacy-highlights {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    text-align: left;
}

.privacy-highlight {
    background: var(--background-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.privacy-actions {
    margin-top: var(--spacing-xl);
}

/* Privacy Policy Responsive */
@media (max-width: 768px) {
    .privacy-policy {
        padding: 100px 0 var(--spacing-xl);
    }
    
    .privacy-article {
        padding: var(--spacing-xl);
        margin: 0 var(--spacing-md);
    }
    
    .privacy-title {
        font-size: var(--font-size-3xl);
    }
    
    .privacy-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .privacy-intro {
        font-size: var(--font-size-base);
        padding: var(--spacing-md);
    }
    
    .privacy-section-title {
        font-size: var(--font-size-lg);
    }
    
    .privacy-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .privacy-highlights {
        text-align: center;
    }
    
    .privacy-highlight {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .privacy-article {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-sm);
    }
    
    .privacy-title {
        font-size: var(--font-size-2xl);
    }
    
    .privacy-intro {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm);
    }
    
    .privacy-content {
        font-size: var(--font-size-sm);
    }
    
    .privacy-section-title {
        font-size: var(--font-size-base);
    }
    
    .privacy-footer {
        padding: var(--spacing-md);
    }
}

/* Transparency Section Styles */
.transparency {
    padding: var(--spacing-3xl) 0;
    background: var(--background-white);
}

.transparency-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.transparency-description {
    font-size: var(--font-size-lg);
    color: var(--text-medium);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.transparency-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.transparency-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--background-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-purple);
}

.transparency-feature .feature-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
    margin-top: var(--spacing-xs);
}

.transparency-feature .feature-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.transparency-feature .feature-content p {
    color: var(--text-medium);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.transparency-note {
    background: var(--warning-orange-light);
    border: 1px solid var(--warning-orange);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.transparency-note p {
    color: var(--text-dark);
    font-size: var(--font-size-sm);
    margin: 0;
    line-height: 1.5;
}

.transparency-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.btn-github {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: #24292e;
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(36, 41, 46, 0.3);
    border: none;
    cursor: pointer;
    min-width: 200px;
    justify-content: center;
}

.btn-github:hover {
    background: #1a1e22;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(36, 41, 46, 0.4);
}

.github-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.github-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
}

.github-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--background-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--text-medium);
}

.github-stat .stat-icon {
    font-size: var(--font-size-base);
}

.github-stat .stat-text {
    font-weight: 500;
}

/* Tech Icons */
.android-icon {
    width: 20px;
    height: 20px;
    fill: #3DDC84;
}

.kotlin-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}


/* Button Icons */
.btn-icon.android-icon {
    width: 20px;
    height: 20px;
    fill: white;
}

/* Responsive Design for Transparency Section */
@media (max-width: 1024px) {
    .transparency-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .transparency-actions {
        align-items: stretch;
    }
    
    .btn-github {
        min-width: auto;
    }
}

@media (max-width: 768px) {
    .transparency {
        padding: var(--spacing-2xl) 0;
    }
    
    .transparency-content {
        gap: var(--spacing-xl);
    }
    
    .transparency-description {
        font-size: var(--font-size-base);
    }
    
    .transparency-feature {
        padding: var(--spacing-md);
    }
    
    .transparency-feature .feature-content h3 {
        font-size: var(--font-size-base);
    }
    
    .transparency-feature .feature-content p {
        font-size: var(--font-size-xs);
    }
    
    .btn-github {
        font-size: var(--font-size-base);
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .github-stats {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .github-stat {
        flex: 1;
        min-width: 120px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .transparency-features {
        gap: var(--spacing-md);
    }
    
    .transparency-feature {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .transparency-feature .feature-icon {
        margin-top: 0;
    }
    
    .transparency-note {
        padding: var(--spacing-md);
    }
    
    .github-stats {
        flex-direction: column;
    }
    
    .github-stat {
        min-width: auto;
    }
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: var(--background-light);
    border: 2px solid var(--primary-purple);
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    transition: all 0.3s ease;
}

.hamburger:hover {
    background: var(--primary-purple);
    transform: scale(1.05);
}

.hamburger:hover .hamburger-line {
    background: white;
}

/* Show hamburger on mobile devices */
@media (max-width: 1024px) {
    .hamburger {
        display: flex;
    }
    
    .header .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        position: relative;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        right: 0;
        width: 280px;
        background: var(--background-white);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
        border-radius: 12px;
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-sm);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        z-index: 1000;
        margin-top: var(--spacing-sm);
    }
    
    .nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-link {
        font-size: var(--font-size-md);
        padding: var(--spacing-sm) var(--spacing-md);
        width: 100%;
        text-align: left;
        border-radius: 8px;
        transition: background-color 0.2s ease;
    }
    
    .nav-link:hover {
        background: var(--background-light);
    }
    
    .language-switcher {
        margin-left: 0;
        margin-top: var(--spacing-md);
        justify-content: center;
        padding-top: var(--spacing-md);
        border-top: 1px solid var(--border-light);
    }
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background: var(--primary-purple);
    margin: 2px 0;
    transition: all 0.3s ease;
    border-radius: 1px;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Body scroll lock when menu is open - not needed for dropdown */
body.nav-open {
    overflow: auto;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-lg);
}

.lang-btn {
    background: transparent;
    border: 2px solid var(--primary-purple);
    color: var(--primary-purple);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 40px;
}

.lang-btn:hover {
    background: var(--primary-purple);
    color: white;
}

.lang-btn.active {
    background: var(--primary-purple);
    color: white;
}

@media (max-width: 768px) {
    .language-switcher {
        margin-left: var(--spacing-sm);
        margin-top: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .language-switcher {
        margin-left: 0;
        margin-top: var(--spacing-sm);
        justify-content: center;
        width: 100%;
    }
    
    .lang-btn {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
        min-width: 35px;
    }
}

@media (max-width: 375px) {
    .language-switcher {
        gap: var(--spacing-xs);
    }
    
    .lang-btn {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
        min-width: 32px;
    }
}