:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --text-color: #333;
    --background-color: #f4f4f4;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

header {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

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

nav ul li {
    margin-left: 1.5rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.hero-content {
    max-width: 800px;
    padding: 2rem;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: rgba(255,255,255,0.9);
}

.cta-button {
    display: inline-block;
    background-color: white;
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
    transform: translateY(0);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.cta-button:hover {
    background-color: #f4f4f4;
    transform: translateY(-3px);
    box-shadow: 0 6px 8px rgba(0,0,0,0.15);
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.social-links a {
    color: white;
    margin: 0 0.5rem;
    text-decoration: none;
}

@media screen and (max-width: 768px) {
    nav {
        flex-direction: column;
    }

    nav ul {
        margin-top: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav ul li {
        margin: 0.5rem;
    }

    .hero {
        padding: 2rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .footer-content {
        flex-direction: column;
    }

    .social-links {
        margin-top: 1rem;
    }
}

.cta-button.clicked {
    transform: scale(0.95);
    opacity: 0.8;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    max-width: 400px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.close-modal {
    margin-top: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
}

.feature {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.feature.visible {
    opacity: 1;
    transform: translateY(0);
}