:root{color-scheme:dark light;--bg: #0f1419;--fg: #e7e9ea;--muted: #8b98a5;--card: #1a2332;--accent: #1d9bf0;--danger: #f4212e;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body{margin:0;background:var(--bg);color:var(--fg);line-height:1.5}#app{max-width:960px;margin:0 auto;padding:1.5rem}.card{background:var(--card);border-radius:12px;padding:1.5rem 2rem;max-width:32rem;margin:3rem auto}.card.error{border:1px solid var(--danger)}h1{font-size:1.5rem;margin:0 0 .5rem}h2{font-size:1.2rem;margin:2rem 0 .75rem}h3{font-size:1rem;margin:1.25rem 0 .5rem;color:var(--muted)}.muted{color:var(--muted);font-size:.9rem}.note{margin:0 0 1.5rem}button{cursor:pointer;border:none;border-radius:8px;padding:.5rem 1rem;font-size:1rem;background:#38444d;color:var(--fg)}button.primary{background:var(--accent);color:#fff}.top{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:1rem}.controls{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}.signin-error-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1rem}.controls input[type=month]{margin-left:.35rem;padding:.35rem;border-radius:6px;border:1px solid #38444d;background:var(--card);color:var(--fg)}.customer{margin-bottom:2.5rem;padding-bottom:2rem;border-bottom:1px solid #38444d}.customer:last-child{border-bottom:none}.totals{display:flex;flex-wrap:wrap;gap:1.5rem;margin:1rem 0}.totals .label{display:block;color:var(--muted);font-size:.85rem}.totals strong{font-size:1.25rem}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{text-align:left;padding:.5rem .75rem;border-bottom:1px solid #38444d}th{color:var(--muted);font-weight:600}.error{color:var(--danger)}code{font-size:.85em}