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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #0f0f0f;
    color: #e0e0e0;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
    font-weight: 700;
}

.tagline {
    font-size: 1.25rem;
    color: #b0b0b0;
    font-weight: 500;
}

main {
    max-width: 800px;
    margin: 0 auto;
}

.description {
    margin-bottom: 2.5rem;
}

.description p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: #d0d0d0;
}

.features {
    background-color: #1a1a1a;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.features h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: #ffffff;
}

.features ul {
    list-style: none;
    padding-left: 0;
}

.features li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1.1rem;
    color: #d0d0d0;
}

.features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4caf50;
    font-weight: bold;
    font-size: 1.2rem;
}

.motto {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 600;
    margin: 2.5rem 0;
    color: #ffffff;
}

.screenshots {
    margin: 3rem 0;
}

.screenshots h2 {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 2rem;
    color: #ffffff;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.screenshot-grid img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid #2a2a2a;
    margin-top: 3rem;
}

footer a {
    color: #4caf50;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #66bb6a;
    text-decoration: underline;
}

footer .divider {
    color: #4a4a4a;
    margin: 0 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.1rem;
    }

    .app-icon {
        width: 100px;
        height: 100px;
        border-radius: 20px;
    }

    .description p,
    .features li {
        font-size: 1rem;
    }

    .features {
        padding: 1.5rem;
    }

    .motto {
        font-size: 1.1rem;
    }

    .screenshot-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .app-icon {
        width: 80px;
        height: 80px;
        border-radius: 16px;
    }

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