body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f0f0f0;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border: 2px solid #666;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 10px;
}

.room-selection {
    background-color: #ffffcc;
    border: 1px solid #ccc;
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
}

.room-input {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    margin: 15px 0;
}

.instructions {
    background-color: #e6f3ff;
    border: 1px solid #ccc;
    padding: 15px;
    margin-bottom: 20px;
}

.chat-area {
    border: 2px solid #999;
    background-color: #fafafa;
    padding: 15px;
    margin-bottom: 20px;
}

.messages {
    height: 400px;
    overflow-y: auto;
    border: 2px inset #c0c0c0;
    padding: 15px;
    background-color: white;
    margin-bottom: 15px;
    font-family: "MS Sans Serif", sans-serif;
    font-size: 11px;
}

.message-item {
    margin-bottom: 15px;
    padding: 8px;
    border: 1px solid #808080;
    max-width: 80%;
    background-color: #f0f0f0;
}

.message-item.own {
    background-color: #4d79a4;
    color: white;
    margin-left: auto;
    text-align: right;
}

.message-item.other {
    background-color: #f0f0f0;
    color: black;
    margin-right: auto;
    text-align: left;
}

.message-time {
    font-size: 9px;
    color: #808080;
    margin-bottom: 5px;
}

.message-item.own .message-time {
    color: #c0c0c0;
}

.message-sender {
    font-weight: bold;
    margin-bottom: 3px;
    font-size: 10px;
}

.message-content {
    font-size: 11px;
    line-height: 1.3;
}

.panels {
    display: flex;
    gap: 20px;
}

.panel {
    flex: 1;
    border: 2px solid #999;
    padding: 15px;
    background-color: #fafafa;
}

.panel h2 {
    margin-top: 0;
    color: #444;
    border-bottom: 1px solid #ccc;
    padding-bottom: 5px;
}

textarea {
    width: 100%;
    box-sizing: border-box;
    font-family: monospace;
    font-size: 12px;
    border: 1px solid #999;
    padding: 5px;
    margin-bottom: 10px;
    resize: vertical;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    box-sizing: border-box;
    font-size: 12px;
    border: 1px solid #999;
    padding: 5px;
    margin-bottom: 10px;
}

.message-input {
    height: 80px;
    font-family: Arial, sans-serif;
    font-size: 14px;
}

.key-input {
    height: 100px;
}

button {
    background-color: #ddd;
    border: 2px outset #ddd;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    margin-bottom: 10px;
    margin-right: 10px;
}

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

button:active {
    border: 2px inset #ddd;
}

button:disabled {
    background-color: #f5f5f5;
    color: #999;
    cursor: not-allowed;
}

.error {
    color: red;
    background-color: #ffe6e6;
    border: 1px solid red;
    padding: 10px;
    margin-top: 10px;
}

.success {
    color: green;
    background-color: #e6ffe6;
    border: 1px solid green;
    padding: 10px;
    margin-top: 10px;
}

label {
    font-weight: bold;
    display: block;
    margin-top: 10px;
    margin-bottom: 5px;
}

.footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ccc;
    color: #666;
    font-size: 12px;
}

.hidden {
    display: none;
}

.loading {
    color: #666;
    font-style: italic;
}

.setup-complete {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.setup-complete button {
    margin: 0;
    padding: 4px 8px;
    font-size: 11px;
    background-color: #c3e6cb;
    border: 1px solid #b0d4b8;
}

.setup-complete button:hover {
    background-color: #b0d4b8;
}

@media (max-width: 768px) {
    .panels {
        flex-direction: column;
    }

    .room-input {
        flex-direction: column;
    }

    .message-item {
        max-width: 95%;
    }
}

.privacy-info {
    background-color: #f0f8ff;
    border: 1px solid #b0c4de;
    padding: 15px;
    margin: 15px 0;
    border-radius: 4px;
    text-align: left;
}

.privacy-info h3 {
    margin-top: 0;
    margin-bottom: 10px;
    color: #2c3e50;
    font-size: 16px;
}

.privacy-info p {
    margin: 8px 0;
    font-size: 14px;
    line-height: 1.4;
}