body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
margin: 0;
padding: 0;
background: linear-gradient(135deg, #003366, #004080);
color: white;
text-align: center;
}

nav {
background-color: transparent;
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
padding: 15px 30px;
transition: linear 0.5s;
background: transparent;
}

.logo {
font-size: 24px;
font-weight: bold;
}

nav ul {
list-style: none;
display: flex;
margin: 0;
}

nav ul li {
margin: 0 15px;
}

nav ul li a {
color: white;
text-decoration: none;
font-weight: 500;
}

#nav-toggle {
display: none;
}

.icon-burger {
display: none;
font-size: 28px;
color: white;
cursor: pointer;
}

@media (max-width: 768px) {
.icon-burger {
display: block;
}

nav ul {  
    display: none;  
    width: 100%;  
    flex-direction: column;  
    margin-top: 10px;  
}  

#nav-toggle:checked + ul {  
    display: flex;  
}  

nav ul li {  
    margin: 10px 0;  
}  

nav ul li a {  
    font-size: 20px;  
}

}

section {
padding: 50px 20px;
}

h1 {
font-size: 2.5em;
}

h2 {
font-size: 2em;
margin-bottom: 20px;
}

p {
text-align: center;
}

.container {
display: flex;
justify-content: center;
flex-wrap: wrap;
gap: 20px;
}

.control {
width: 200px;
display: flex;
}

button {
background-color: #0066cc;
color: #fff;
padding: 15px 20px;

margin: 10px 0;  
cursor: pointer;  
border: none;  
border-radius: 10px;  
width: 100%;  
font-size: 16px;  

transition: background-color 0.3s, transform 0.3s;  
display: flex;  
flex-direction: column;  
align-items: center;  
justify-content: center;

}
button img {
margin-bottom: 10px;
}

button span {
font-size: 18px;
}

button:hover {
background-color: #005bb5;
transform: translateY(-5px);
}

#about p {
margin:0 auto;
text-align: centre;
}

@media (max-width: 768px) {
h1 {
font-size: 2em;
}

h2 {  
    font-size: 1.5em;  
}  

button {  
    font-size: 14px;  
}

/* Centered authentication container */
.auth-container {
    width: 90%;
    max-width: 400px;
    margin: 50px auto;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
    text-align: center;
}

/* Form input fields */
.auth-container input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: none;
    border-radius: 5px;
    font-size: 16px;
}

/* Button styling */
.auth-container button {
    background-color: #0066cc;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    font-size: 16px;
    transition: background 0.3s ease-in-out;
}

.auth-container button:hover {
    background-color: #005bb5;
}

/* Links */
.auth-container p {
    margin-top: 15px;
}

.auth-container a {
    color: #00bfff;
    text-decoration: none;
}

.auth-container a:hover {
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .auth-container {
        padding: 20px;
    }

    .auth-container input,
    .auth-container button {
        font-size: 14px;
    }
}

/* Style for login and signup buttons */
.auth-btn {
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
    transition: background 0.3s;
}

.auth-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.signup-btn {
    background-color: #00bfff;
    color: white;
    padding: 8px 15px;
    border-radius: 5px;
}

.signup-btn:hover {
    background-color: #008cba;
}

/* Responsive navigation for mobile */
@media (max-width: 768px) {
    nav ul {
        display: none;
        width: 100%;
        flex-direction: column;
        margin-top: 10px;
    }

    #nav-toggle:checked + ul {
        display: flex;
    }

    nav ul li {
        margin: 10px 0;
        text-align: center;
    }

    nav ul li a {
        font-size: 18px;
        padding: 10px;
        display: block;
    }

    .auth-btn {
        width: 100%;
        text-align: center;
    }
}