:root {
    --bg: #ffffff;
    --fg: #1a1a1a;
    --accent: #0066cc;
    --border: #e0e0e0;
    --card-bg: #f9f9f9;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #121212;
        --fg: #e0e0e0;
        --border: #333333;
        --card-bg: #1e1e1e;
    }
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--fg);
    margin: 0;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

header {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.controls {
    margin-bottom: 2rem;
}

input[type="text"] {
    width: 100%;
    box-sizing: border-box;
    padding: 0.8rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--fg);
    font-size: 1.1rem;
}

.options {
    display: flex;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: #666;
    margin-top: 0.8rem;
}

.options label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem;
}

.card-header {
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.preview {
    font-size: 1.4rem;
    line-height: 1.2;
    word-break: break-all;
}

.stats {
    font-variant-numeric: tabular-nums;
    font-weight: bold;
}