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

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

header {
    background-color: #222;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 3px 6px rgba(0,0,0,0.2);
}

#header-img {
    width: 120px;
    height: 70px;
}

#nav-bar {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: #61DAFB;
}

section {
    padding: 120px 20px 60px;
    max-width: 900px;
    margin: 0 auto;
}

h2 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 2rem;
}

p {
    text-align: center;
    font-size: 1.1rem;
}

.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.feature-box {
    flex: 1 1 250px;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.feature-box span {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

#video {
    display: block;
    margin: 2rem auto;
    width: 100%;
    max-width: 720px;
    border-radius: 10px;
}

form {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 2rem;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

#email {
    padding: 0.7rem;
    width: 100%;
    max-width: 400px;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#submit {
    padding: 0.7rem 1.5rem;
    background-color: #61DAFB;
    color: white;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

#submit:hover {
    background-color: #35b5d9;
                        
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: #ddd;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    #nav-bar {
        flex-direction: column;
        align-items: flex-end;
        gap: 0;
    } 
    .features {
        flex-direction: column;
        align-items: center;
    }
}