:root {
    --bg: #0f1115;
    --fg: #e6e6e6;
    --muted: #8a8a8a;
    --accent: #c8a96a;
    --panel: #1a1d24;
    --border: #2a2f3a;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
}

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

header h1 {
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: 0.1em;
    color: var(--accent);
}

header .tagline {
    margin: 0.25rem 0 0;
    color: var(--muted);
}

main {
    max-width: 640px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

section, form {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

select, input[type="text"], input[type="number"] {
    width: 100%;
    padding: 0.5rem;
    background: var(--bg);
    color: var(--fg);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
}

.tag-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.25rem 0.75rem;
    margin-top: 0.5rem;
}

.tag-grid label {
    font-weight: normal;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin: 0;
}

button {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
}

button.link {
    background: none;
    color: var(--accent);
    padding: 0;
    width: auto;
    font-size: 0.85rem;
    text-decoration: underline;
}

#result {
    font-size: 2rem;
    color: var(--accent);
    margin: 0 0 0.5rem;
}

.explanation { margin: 0 0 0.75rem; }
.muted { color: var(--muted); font-size: 0.9rem; }

pre {
    background: var(--bg);
    padding: 0.75rem;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.85rem;
}

.field { margin-bottom: 0.75rem; }