:root {
    --primary-color: #007AFF;
    --secondary-color: #1c1c1e;
    --background-color: #f5f5f7;
    --text-color: #1d1d1f;
    --text-light: #86868b;
    --white: #ffffff;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-color);
    background-color: var(--white);
    line-height: 1.5;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    background-color: #000;
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.hero-content .subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

.hero-content .description {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 40px;
    color: #d2d2d7;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #005bb5;
}

.hero-image {
    margin-top: 50px;
}

.hero-image img {
    max-width: 300px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    border: 4px solid #333;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: var(--background-color);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

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

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-light);
}

/* Gallery Section */
.gallery {
    padding: 80px 0;
}

.gallery h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.screenshot-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
}

.screenshot {
    text-align: center;
    max-width: 300px;
}

.screenshot img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border: 1px solid #eee;
    margin-bottom: 15px;
}

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

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--text-light);
    padding: 40px 0;
    text-align: center;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}