/* Modern minimalist design inspired by Grok and Apple */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5f7;
    color: #1d1d1f;
    line-height: 1.6;
}

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

header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: #1d1d1f;
    transition: color 0.3s;
}

nav a:hover {
    color: #007aff;
}

.hero {
    text-align: center;
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 20px;
    margin: 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: #007aff;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    transition: transform 0.3s;
}

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

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.feature {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
}

form {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    margin: 2rem auto;
}

input {
    width: 100%;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid #d1d1d6;
    border-radius: 10px;
    font-size: 1rem;
}

button {
    width: 100%;
    padding: 1rem;
    background: #007aff;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #0056cc;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #86868b;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
}