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

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

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

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

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);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #2980b9;
}

.features {
    padding: 4rem 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature {
    text-align: center;
    padding: 2rem;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.feature h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about, .contact {
    padding: 4rem 0;
    text-align: center;
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.contact-form button {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background-color: #27ae60;
}

footer {
    background-color: var(--text-color);
    color: white;
    text-align: center;
    padding: 1rem;
}

@media screen and (max-width: 768px) {
    .menu-toggle {
        display: block;
        cursor: pointer;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 60px;
        left: 0;
        background-color: white;
        padding: 1rem;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        margin: 0.5rem 0;
        text-align: center;
    }

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    width: 25px;
}

.menu-toggle span {
    height: 3px;
    width: 100%;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: 0.4s;
}

.feature-icon {
    width: 50px;
    height: 50px;
    stroke: var(--primary-color);
    margin-bottom: 1rem;
}

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

.feature {
    animation: fadeIn 0.5s ease-out;
}

.feature:nth-child(2) {
    animation-delay: 0.2s;
}

.feature:nth-child(3) {
    animation-delay: 0.4s;
}