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

:root {
    --primary-color: #6C5CE7;
    --secondary-color: #A29BFE;
    --accent-color: #FD79A8;
    --text-dark: #2D3436;
    --text-light: #636E72;
    --background: #FAFAFA;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    color: var(--text-dark);
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    min-height: 100vh;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.1);
}

header {
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    color: white;
}

.logo {
    margin-bottom: 20px;
}

#app-logo {
    width: 120px;
    height: 120px;
    border-radius: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    object-fit: cover;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.tagline {
    font-size: 1.3rem;
    opacity: 0.95;
    font-weight: 300;
}

main {
    padding: 40px 20px;
}

.hero {
    text-align: center;
    margin-bottom: 60px;
}

.description {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.download {
    text-align: center;
    margin-bottom: 80px;
    padding: 40px 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 20px;
}

.download h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.store-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.store-button {
    display: inline-block;
    transition: transform 0.3s ease;
}

.store-button:hover {
    transform: translateY(-5px);
}

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

.features {
    margin-bottom: 60px;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--text-dark);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 0 20px;
}

.feature {
    text-align: center;
    padding: 30px 20px;
    border-radius: 15px;
    background: var(--background);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 15px;
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.feature p {
    color: var(--text-light);
    font-size: 1rem;
}

footer {
    background: var(--text-dark);
    color: white;
    text-align: center;
    padding: 40px 20px;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s ease;
}

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

.footer-links span {
    opacity: 0.5;
}

.copyright {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.1rem;
    }

    #app-logo {
        width: 100px;
        height: 100px;
    }

    .description {
        font-size: 1.1rem;
    }

    .download h2 {
        font-size: 1.5rem;
    }

    .store-buttons {
        flex-direction: column;
        align-items: center;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}