body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f0f7f0;
}

.App {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #85bb65;
    color: #ffffff;
    padding: 1rem;
    text-align: center;
}

.site-title {
    font-family: 'Georgia', serif;
    font-size: 2.5rem;
    margin: 0;
    padding: 1rem 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

nav {
    background-color: #004d00;
    padding: 0.5rem;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav ul li {
    margin: 0.5rem 15px;
}

nav ul li a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #85bb65;
}

main {
    flex-grow: 1;
    padding: 2rem;
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 2rem;
}

.content {
    flex: 1 1 60%;
    max-width: 60%;
}

.register-form {
    flex: 0 0 35%;
    max-width: 350px;
    background-color: #ffffff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    align-self: flex-start;
}

.sign-in-container, .hub-container, .about {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1, h2, h3 {
    color: #004d00;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.hero p {
    font-size: 1.2rem;
    color: #4a4a4a;
}

.features ul {
    list-style-type: none;
    padding: 0;
}

.features li {
    margin-bottom: 1rem;
    padding-left: 30px;
    position: relative;
}

.features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #85bb65;
}

form {
    display: grid;
    gap: 1rem;
}

input, select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    background-color: #004d00;
    color: white;
    padding: 0.75rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #006400;
}

footer {
    background-color: #85bb65;
    color: #ffffff;
    text-align: center;
    padding: 1rem;
    margin-top: auto;
}

.error-message {
    color: #d32f2f;
    background-color: #ffcdd2;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.success-message {
    color: #388e3c;
    background-color: #c8e6c9;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

@media (max-width: 968px) {
    main {
        flex-direction: column;
    }
    
    .content, .register-form {
        max-width: 100%;
    }

    .site-title {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 0.5rem 0;
    }
}