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

body {
font-family: Arial, sans-serif;
line-height: 1.6;
color: #222;
}

nav {
position: sticky;
top: 0;
z-index: 1000;
background-color: #111827;
padding: 1rem 2rem;
}

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

nav a {
color: white;
text-decoration: none;
font-weight: bold;
}

nav a:hover {
color: #60a5fa;
}

.hero {
position: relative;
width: 100%;
}

.hero img {
position: static;
display: block;
width: 100%;
height: 100vh;
object-fit: cover;
}

.hero-text {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
color: white;
text-align: center;
background-color: rgba(0, 0, 0, 0.55);
padding: 2rem 3rem;
border-radius: 12px;
width: 80%;
max-width: 700px;
}

.hero-text h1 {
font-size: 4rem;
margin-bottom: 1rem;
}

.hero-text p {
font-size: 1.2rem;
}

.content {
min-height: 100vh;
padding: 5rem 10%;
background-color: #f3f4f6;
}

.content h2 {
margin-bottom: 1rem;
font-size: 2.5rem;
}

.content p {
max-width: 800px;
margin-bottom: 1.5rem;
font-size: 1.1rem;
}

footer {
position: relative;
padding: 2rem;
background-color: #111827;
color: white;
text-align: left;
}

.back-to-top {
position: fixed;
right: 20px;
bottom: 20px;
z-index: 2000;
padding: 0.8rem 1.2rem;
background-color: #2563eb;
color: white;
text-decoration: none;
border-radius: 8px;
}

.back-to-top:hover {
background-color: #1d4ed8;
}