:root {
    color-scheme: light dark;
    --bg: #f5f5f5;
    --fg: #1a1a1a;
    --border: #ccc;
    --card: #fff;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #181818;
        --fg: #eee;
        --border: #444;
        --card: #242424;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, sans-serif;
    background: var(--bg);
    color: var(--fg);
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

h1 {
    font-size: 1.25rem;
    margin: 0;
}

#controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

main {
    max-width: 720px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.readout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.cell {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    text-align: center;
}

.cell-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--border);
    margin-bottom: 0.5rem;
}

.cell-value {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
}

#recording-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
}