body {
    background-color: #121212;
    color: #ffffff;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 800px;
}

h1, h2 {
    color: #e0e0e0;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
    background-color: #1e1e1e;
    color: #fff;
    border: 1px solid #333;
}

button {
    background-color: #6200ea;
    color: white;
    padding: 10px 15px;
    border: none;
    cursor: pointer;
    width: 100%;
}

button:hover {
    background-color: #3700b3;
}

.helper-link {
    display: inline-block;
    margin-bottom: 10px;
    color: #bb86fc;
    text-decoration: none;
}

.rooms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.room-card {
    background-color: #1e1e1e;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #333;
}

.room-card h3 {
    margin-top: 0;
}

.join-btn {
    background-color: #03dac6;
    color: #000;
    text-align: center;
    display: block;
    text-decoration: none;
    margin-top: 10px;
}

.join-btn:hover {
    background-color: #018786;
}

.join-btn.disabled {
    background-color: #555;
    pointer-events: none;
    color: #888;
}

.error {
    color: #cf6679;
    margin-bottom: 15px;
}