body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #0D1117;
    color: #C9D1D9;
    margin: 0;
    padding: 1rem;
}
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background-color: #161B22;
}
.header h1 {
    font-size: 1.5rem;
    margin: 0;
}
.back-link, a {
    color: #58A6FF;
    text-decoration: none;
    font-size: 1.2rem;
}
.airport-section {
    margin-top: 2rem;
}
.airport-title, h1 {
    font-size: 1.75rem;
    font-weight: bold;
    color: #58A6FF;
    border-bottom: 1px solid #30363D;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}
th, td {
    border: 1px solid #30363D;
    padding: 0.75rem;
    text-align: left;
}
th {
    background-color: #161B22;
    font-weight: bold;
}
tbody tr:nth-child(odd) {
    background-color: #161B22;
}
tbody tr:hover {
    background-color: #222b38;
}
small {
    font-size: 0.8rem;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
}
.container {
    background-color: #161B22;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    text-align: center;
    max-width: 500px;
    margin: 2rem auto; /* Center the container */
}
textarea {
    width: calc(100% - 1rem); /* Account for padding */
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid #30363D;
    background-color: #0D1117;
    color: #C9D1D9;
    margin-bottom: 1rem;
    min-height: 80px;
    resize: vertical;
    text-transform: uppercase;
}
button {
    background-color: #238636; /* GitHub green */
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}
button:hover {
    background-color: #2ea043;
}
nav {
    padding: 1rem;
    background-color: #161B22;
}
nav a {
    margin-right: 1rem;
}