* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #007AFF;
    --secondary-color: #5AC8FA;
    --accent-color: #FF3B30;
    --text-primary: #1C1C1E;
    --text-secondary: #8E8E93;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F2F2F7;
    --border-color: #E5E5EA;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
}

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

a:focus-visible,
button:focus-visible {
    outline: 3px solid rgba(0, 122, 255, 0.34);
    outline-offset: 3px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}


.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-right: 10px;
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.lang-switch {
    background: var(--bg-secondary);
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

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


.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-wrap: balance;
    overflow-wrap: anywhere;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 14px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.phone-mockup {
    position: relative;
    max-width: 350px;
    margin: 0 auto;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    inset: -20px;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.1), rgba(90, 200, 250, 0.1));
    border-radius: 40px;
    z-index: -1;
}

.app-screenshot {
    width: 100%;
    height: auto;
    aspect-ratio: 323 / 700;
    object-fit: contain;
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
}


.features {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}


.screenshots {
    padding: 80px 0;
}

.screenshots-carousel {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    padding: 2rem 0;
    scroll-snap-type: x mandatory;
}

.screenshot-item {
    flex: 0 0 280px;
    scroll-snap-align: center;
    text-align: center;
}

.screenshot-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 258 / 560;
    object-fit: cover;
    object-position: top;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 1rem;
}

.screenshot-item p {
    font-weight: 600;
    color: var(--text-primary);
}


.how-it-works {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.steps {
    display: flex;
    justify-content: space-around;
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
    flex: 1;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
    line-height: 1.8;
}


.download {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.support-link {
    min-width: 180px;
}

.app-store-badge img {
    height: 60px;
    width: auto;
}

.privacy-links {
    margin-top: 3rem;
}

.privacy-links a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.privacy-links a:hover {
    opacity: 1;
    text-decoration: underline;
}


.footer {
    padding: 2rem 0;
    background: var(--text-primary);
    color: white;
    text-align: center;
}


@media (max-width: 768px) {
    .nav-content {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .logo {
        width: 100%;
    }

    .nav-links {
        width: 100%;
        gap: 1rem;
        font-size: 0.9rem;
        overflow-x: auto;
        padding-bottom: 4px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
        line-height: 1.15;
        margin-inline: auto;
    }
    
    .hero-image {
        order: -1;
    }
    
    .phone-mockup {
        max-width: 250px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .steps {
        flex-direction: column;
        gap: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 14px;
    }

    .hero {
        padding: 144px 0 56px;
    }

    .nav-links {
        gap: 0.85rem;
    }

    .nav-links a,
    .lang-switch {
        flex: 0 0 auto;
        font-size: 0.88rem;
    }
    
    .hero-text h1 {
        width: 100%;
        max-width: none;
        font-size: clamp(1.45rem, 6.1vw, 1.72rem);
        white-space: normal;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.screenshot-item,
.step {
    animation: fadeIn 0.6s ease-out;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition: none !important;
        animation: none !important;
    }
}