:root{--bg: #f4f6f8;--card: #ffffff;--ink: #1e293b;--muted: #64748b;--line: #e2e8f0;--accent: #1d4ed8;--accent-soft: #eff6ff;--danger: #b91c1c;--ok: #047857;--warn: #b45309;font-family:Segoe UI,Tahoma,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:var(--bg);color:var(--ink)}button,input,select{font:inherit}a{color:inherit}.app-shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#e2e8f0;padding:20px 14px;display:flex;flex-direction:column;gap:8px}.brand{font-size:20px;font-weight:700;color:#fff;margin:0 0 4px}.brand-sub{font-size:12px;color:#94a3b8;margin-bottom:16px}.nav-btn{background:transparent;border:0;color:#cbd5e1;text-align:start;padding:10px 12px;border-radius:8px;cursor:pointer}.nav-btn:hover,.nav-btn.active{background:#1e293b;color:#fff}.logout{margin-top:auto}.main{padding:24px}.top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:20px;gap:12px}h1{margin:0;font-size:22px}.muted{color:var(--muted);font-size:13px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:20px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}.card h2{margin:0 0 12px;font-size:15px}.stat{font-size:22px;font-weight:700}.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{padding:8px 6px;border-bottom:1px solid var(--line);text-align:start}.badge{font-size:11px;padding:2px 8px;border-radius:999px}.paid{background:#dcfce7;color:var(--ok)}.pending{background:#fef3c7;color:var(--warn)}.voided{background:#fee2e2;color:var(--danger)}.partial{background:#dbeafe;color:var(--accent)}.toolbar{display:flex;gap:8px;margin-bottom:12px}input.search,.login input{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff}.login{min-height:100vh;display:grid;place-items:center;padding:24px}.login .card{width:min(420px,100%)}.login button,.primary{background:var(--accent);color:#fff;border:0;border-radius:8px;padding:10px 16px;cursor:pointer;width:100%}.linkish{background:none;border:0;color:var(--accent);cursor:pointer;padding:0}.error{color:var(--danger);font-size:13px;margin:8px 0 0}.low{color:var(--danger);font-weight:600}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:8px 0}.form-grid label,form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.form-grid input,.form-grid select,textarea,.card select{border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff;color:var(--ink)}textarea{width:100%;min-height:72px;resize:vertical}.void-box{margin-top:12px;display:grid;gap:8px}.danger{background:var(--danger);color:#fff;border:0;border-radius:8px;padding:10px 16px;cursor:pointer;width:auto}@media(max-width:800px){.app-shell{grid-template-columns:1fr}.sidebar{flex-direction:row;flex-wrap:wrap}.logout{margin-top:0}}