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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Navbar */
nav {
    position: sticky;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    z-index: 1000;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #007bff;
}

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

.nav-links a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #007bff;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: url('https://via.placeholder.com/1920x1080') no-repeat center center/cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 0 5%;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero h1 {
    font-size: 3.5rem;
    z-index: 1;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.5rem;
    z-index: 1;
    margin-bottom: 2rem;
}

.cta-button {
    z-index: 1;
    padding: 1rem 2rem;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: background 0.3s;
}

.cta-button:hover {
    background-color: #0056b3;
}

/* Services Section */
.services {
    padding: 4rem 5%;
    text-align: center;
    background-color: #f9f9f9;
}

.services h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card img {
    width: 60px;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Clients Section */
.clients {
    padding: 4rem 5%;
    text-align: center;
}

.clients h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.clients-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.clients-grid img {
    width: 100px;
    filter: grayscale(100%);
    transition: filter 0.3s;
}

.clients-grid img:hover {
    filter: grayscale(0%);
}

/* Testimonials Section */
.testimonials {
    padding: 4rem 5%;
    background-color: #f9f9f9;
    text-align: center;
}

.testimonials h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.testimonial-card {
    max-width: 600px;
    margin: 0 auto 2rem;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Footer */
footer {
    padding: 3rem 5%;
    background-color: #333;
    color: white;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
}

footer h3 {
    margin-bottom: 1rem;
}

footer ul {
    list-style: none;
}

footer ul li {
    margin-bottom: 0.5rem;
}

footer a {
    color: #ccc;
    text-decoration: none;
}

footer a:hover {
    color: #007bff;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: #fff;
        padding: 1rem;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

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

    .hamburger {
        display: block;
    }

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

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

    footer {
        flex-direction: column;
        text-align: center;
    }
}