body {
    font-family: Arial, sans-serif;
    text-align: center;
}

h1, h2 {
    color: #333;
}

#rent-bed-section, #available-passengers-section, #not-available-passengers-section {
    margin: 20px;
    padding: 10px;
    border: 1px solid #333;
}

button {
    background-color: #333;
    color: #fff;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    margin: 10px 0;
}

/* Responsive Navigation Styles */
nav {
    background-color: #006d77;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

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

nav ul li {
    margin: 0 0.7rem;
}

nav ul li a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 12px 18px;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s ease;
    user-select: none;
}

nav ul li a:hover,
nav ul li a:focus {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    outline: none;
    transform: translateY(-2px);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    nav ul {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
    }

    nav ul li {
        margin: 0.25rem;
    }

    nav ul li a {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    nav ul {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.25rem;
    }

    nav ul li a {
        padding: 0.6rem 0.8rem;
        font-size: 0.8rem;
    }
}