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

:root {
    --black: #000000;
    --dark-gray: #0a0a0a;
    --gray: #1a1a1a;
    --light-gray: #333333;
    --white: #ffffff;
    --accent: #ffffff;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--black);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    background-color: var(--dark-gray);
    border-bottom: 1px solid var(--light-gray);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(10, 10, 10, 0.8);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: var(--text-secondary);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 80px 0 120px;
    min-height: calc(100vh - 72px);
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    max-width: 540px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--white);
    letter-spacing: -0.02em;
}

.hero-description {
    font-size: 20px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.app-store-btn {
    display: inline-block;
    transition: transform 0.2s ease;
}

.app-store-btn:hover {
    transform: translateY(-2px);
}

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

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

.screenshot {
    max-width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* Footer */
.footer {
    background-color: var(--dark-gray);
    border-top: 1px solid var(--light-gray);
    padding: 48px 0;
    margin-top: 80px;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 16px;
    transition: color 0.2s ease;
}

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

.footer-copyright {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-description {
        font-size: 18px;
    }

    .hero-image {
        order: -1;
    }
}

@media (max-width: 640px) {
    .nav-container {
        height: 64px;
    }

    .logo-text {
        font-size: 20px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .hero {
        padding: 48px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-description {
        font-size: 16px;
        margin-bottom: 32px;
    }

    .app-store-badge {
        height: 48px;
    }

    .footer-links {
        gap: 24px;
        flex-wrap: wrap;
    }

    .footer {
        margin-top: 60px;
        padding: 32px 0;
    }
}