:root {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial
}

body {
    margin: 0;
    padding: 16px;
    background: #f5f7fb
}

.container {
    max-width: 1100px;
    margin: 0 auto
}

.grid {
    display: grid;
    grid-template-columns:repeat(3, 1fr);
    gap: 12px
}

.card {
    background: white;
    padding: 12px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06)
}

.card.wide {
    grid-column: 1/4
}

.log {
    height: 220px;
    overflow: auto;
    background: #111;
    color: #0f0;
    padding: 8px;
    font-family: monospace
}

.buttons {
    margin-top: 8px
}

label {
    display: block;
    margin: 6px 0
}

input, select {
    width: 100%;
    padding: 6px;
    margin-top: 4px
}