html {
    overflow-y: scroll;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: 
        url('images/clouds.jpg'),
        linear-gradient(to bottom right, #e6f7ff, #fff5e6);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding-bottom: 80px;
}


header {
    background-color: transparent;
    padding: 0;
    text-align: center;
}

header img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 800px;
    object-fit: cover;
    -webkit-object-fit: cover; 
    -moz-object-fit: cover; 
    margin: 0 auto;
}

nav {
    background-color: #b3d9ff;
    padding: 10px 0;
    text-align: center;
}

nav a {
    color: #333;
    text-decoration: none;
    padding: 12px 20px;
    font-size: 18px;
    margin: 0 10px;
    transition: background-color 0.3s ease;
}

nav a:hover {
    background-color: #a3cbe3;
    border-radius: 5px;
}

.nav-links {
  text-align: center;
  overflow: hidden; 
  position: relative; 
}

.nav-links a {
  display: inline-block;
  padding: 14px 16px;
  text-decoration: none;
}

.nav-links .icon {
  display: none;
}

@media screen and (max-width: 600px) {
    
    .nav-links {
    text-align: center;
  }

    .nav-links a:not(:first-child) {
    display: none;
  }
  
    .nav-links a.icon {
    display: block;
    position: absolute;
    right: 0;
    top: 0;
  }

    .nav-links.responsive {
    text-align: center; 
  }

    .nav-links.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }

    .nav-links.responsive a {
    display: block;
    float: none;
    text-align: center;
  }
}

main {
    max-width: 800px;
    margin: 40px auto;
    padding: 3rem;
    text-align: left;
    background: rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
    flex: 1;
    width: 90%;
    box-sizing: border-box;  
}    

h1, h2, h3 {
    color: #2d4f68;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: 1.2rem;
}

section {
    margin: 2rem 0;
}

.download-btn {
    display: inline-block;
    background-color: #5fa8d3;
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    font-size: 18px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.download-btn:hover {
    background-color: #468bb0;
}

form {
    max-width: 600px;
    margin: 0 auto;
    text-align: left;
}

label {
    display: block;
    margin-top: 1rem;
    font-weight: bold;
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin-top: 0.5rem;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
    background-color: #f9f9f9;
    resize: vertical;
}

button[type="submit"] {
    margin-top: 1rem;
    background-color: #5fa8d3;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button[type="submit"]:hover {
    background-color: #468bb0;
}

.contact-form {
    max-width: 600px;
    margin: 2rem auto;
    text-align: left;
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.contact-intro {
    text-align: center;
    margin-bottom: 2rem;
}

.external-links a {
    color: #2d4f68;
    text-decoration: none;
    font-size: 18px;
    margin-right: 20px;
}

.external-links a:hover {
    text-decoration: underline;
}

footer {
    box-sizing: border-box;
    background-color: #b3d9ff;
    color: #333;
    text-align: center;
    padding: 1.5rem;
    width: 100%;
    font-size: 14px;
    position: fixed;
    bottom: 0;
    left: 0;
    z-index: 1000;
}

footer p {
    margin: 0;
}