.nav {
    background-color: #f4f4f4;
    padding: 10px;
    text-align: center;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav a {
    margin: 0 15px;
    text-decoration: none;
    color: #333;
    font-weight: bold;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f0f0f0;
    line-height: 1.6;
}

header {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
    height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

header h1 {
    font-size: 4rem;
    margin: 0;
    font-weight: bold;
    letter-spacing: 3px;
    text-transform: uppercase;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.7);
    padding-top: 70px;
}

@media (max-width: 1200px) {
    header h1 {
        font-size: 3.5rem;
    }
}

@media (max-width: 992px) {
    header h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    header h1 {
        font-size: 2rem;
    }
}

header p {
    font-size: 1.7rem;
    margin-top: 10px;
    color: #ddd;
}

section {
    padding: 70px 20px 50px;
    max-width: 1100px;
    margin: 0 auto;
    background-color: #fff;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    section {
        padding: 50px 15px 30px;
    }
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

a {
    color: #ff5722;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #ff784e;
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .nav {
        padding: 10px 5px;
    }

    .nav a {
        margin: 0 10px;
    }
}