:root{--brand: #d40b0b;--brand-dark: #a80808;--bg: #f4f5f7;--surface: #ffffff;--border: #e2e4e8;--text: #1f2328;--text-muted: #6b7280;--success: #1a7f37;--danger: #d40b0b;font-family:-apple-system,Segoe UI,PingFang TC,Microsoft JhengHei,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 24px;display:flex;align-items:center;justify-content:space-between}.topbar .brand{font-weight:700;color:var(--brand);font-size:18px;text-decoration:none}.topbar nav{display:flex;gap:16px;align-items:center}.topbar nav a{color:var(--text);text-decoration:none;font-size:14px}.topbar nav a:hover{color:var(--brand)}.main{flex:1;padding:24px;max-width:960px;width:100%;margin:0 auto}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:24px;margin-bottom:20px}.card h2{margin-top:0;font-size:18px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.field{display:flex;flex-direction:column;gap:4px}.field label{font-size:13px;color:var(--text-muted)}.field input,.field select,.field textarea{padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px;font-family:inherit}.field textarea{resize:vertical}.region-picker{display:flex;flex-wrap:wrap;gap:8px}.region-chip{padding:8px 16px;border:1px solid var(--border);border-radius:999px;cursor:pointer;font-size:14px;background:var(--surface)}.region-chip.selected{background:var(--brand);border-color:var(--brand);color:#fff}table{width:100%;border-collapse:collapse;font-size:13px}th,td{border:1px solid var(--border);padding:8px;text-align:left;vertical-align:top}th{background:#f9fafb;font-weight:600}.sortable-th{cursor:pointer;-webkit-user-select:none;user-select:none;white-space:nowrap}.sortable-th:hover{background:#f1f2f4;color:var(--brand)}.items-table input[type=text],.items-table input[type=number],.items-table textarea{width:100%;border:1px solid transparent;padding:4px;font-size:13px;font-family:inherit;background:transparent}.items-table textarea{resize:vertical;min-height:40px;line-height:1.4}.items-table input:focus,.items-table textarea:focus{border-color:var(--brand);outline:none;background:#fff}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:6px;border:1px solid var(--border);background:var(--surface);cursor:pointer;font-size:14px;color:var(--text)}.btn:hover{border-color:var(--brand)}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn.primary:hover{background:var(--brand-dark)}.btn.small{padding:5px 10px;font-size:12px}.btn:disabled{opacity:.5;cursor:not-allowed}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#eef2ff;color:#3730a3}.badge.admin{background:#fee2e2;color:var(--brand-dark)}.msg{padding:10px 14px;border-radius:6px;font-size:14px;margin-bottom:14px}.msg.error{background:#fef2f2;color:var(--danger);border:1px solid #fecaca}.msg.success{background:#f0fdf4;color:var(--success);border:1px solid #bbf7d0}.login-wrap{max-width:360px;margin:80px auto}.totals-row{display:flex;gap:24px;justify-content:flex-end;margin-top:12px;font-size:14px}.totals-row strong{font-size:16px}.center-note{text-align:center;color:var(--text-muted);padding:40px 0}