:root{--bg: #f4f6f8;--surface: #ffffff;--border: #e5e7eb;--text: #1f2937;--muted: #6b7280;--primary: #2563eb;--primary-hover: #1d4ed8;--error: #dc2626;--success: #16a34a;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Yu Gothic,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;min-height:100vh}body{background:var(--bg);color:var(--text)}a{color:var(--primary)}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:16px}.sidebar h1{font-size:16px;margin:0 0 16px}.sidebar nav a{display:block;padding:10px 12px;border-radius:8px;text-decoration:none;color:var(--text);margin-bottom:4px}.sidebar nav a.active{background:#eff6ff;color:var(--primary);font-weight:600}.sidebar-footer{font-size:12px;color:var(--muted);margin-top:24px}.main{padding:24px 32px;max-width:1400px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h2{margin:0;font-size:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:20px;margin-bottom:16px}table{width:100%;border-collapse:collapse;background:var(--surface)}th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}th{background:#f9fafb;font-weight:600}tr:last-child td{border-bottom:none}.btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;border-radius:6px;font-size:14px;font-weight:500;border:1px solid var(--border);background:#fff;cursor:pointer;text-decoration:none;color:var(--text)}.btn:hover{background:#f3f4f6}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{color:var(--error);border-color:#fecaca}.btn-sm{padding:4px 10px;font-size:13px}label{display:block;margin:12px 0 4px;font-size:14px;font-weight:500}input,textarea,select{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;font-family:inherit;background:#fff}input[type=checkbox]{width:auto}.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.toolbar{display:flex;gap:8px;margin-bottom:16px}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}.metric{background:var(--surface);padding:16px;border-radius:8px;border:1px solid var(--border)}.metric-label{font-size:13px;color:var(--muted)}.metric-value{font-size:28px;font-weight:700;margin-top:4px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:50}.modal{background:#fff;border-radius:12px;padding:24px;width:100%;max-width:600px;max-height:90vh;overflow:auto}.modal h3{margin:0 0 16px}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:20px}.error-text{color:var(--error);font-size:14px}.muted{color:var(--muted)}.center{text-align:center}.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#e5e7eb;color:var(--text)}.tag.green{background:#dcfce7;color:#166534}.tag.gray{background:#f3f4f6;color:var(--muted)}.tag.red{background:#fee2e2;color:var(--error)}.qr-modal-canvas{width:240px;height:240px;margin:0 auto;display:block}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px}.login-card{width:100%;max-width:400px}