:root {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --accent-color: #bb86fc;
    --secondary-bg: #1e1e1e;
    --border-color: #333;
    --success-color: #03dac6;
    --error-color: #cf6679;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 1rem;
}

header {
    margin-bottom: 2rem;
    text-align: center;
}

h1 {
    color: var(--accent-color);
    font-size: 1.5rem;
}

section {
    margin-bottom: 2rem;
    background-color: var(--secondary-bg);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

h2 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

#device-list, #message-log {
    min-height: 50px;
}

#message-log {
    max-height: 300px;
    overflow-y: auto;
    font-family: monospace;
    font-size: 0.85rem;
}

.log-entry {
    border-bottom: 1px solid var(--border-color);
    padding: 0.25rem 0;
    display: flex;
    justify-content: space-between;
}

.log-entry .timestamp {
    color: #888;
    margin-right: 0.5rem;
}

.device-item {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
}

.device-item:last-child {
    border-bottom: none;
}

.device-status {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 10px;
    background-color: #555;
}

.device-status.connected {
    background-color: var(--success-color);
}

@media (min-width: 768px) {
    main {
        max-width: 800px;
        margin: 0 auto;
    }
}