:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-bg: #f1f5f9;--color-surface: #ffffff;--color-text: #1e293b;--color-text-muted: #64748b;--color-border: #e2e8f0;--color-success: #16a34a;--color-error: #dc2626;--sidebar-width: 240px;--header-height: 56px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--color-text);color:#fff;position:fixed;top:0;left:0;bottom:0;display:flex;flex-direction:column}.sidebar-brand{padding:20px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-brand h2{font-size:16px;font-weight:600}.sidebar-nav{display:flex;flex-direction:column;padding:12px 0}.sidebar-link{display:block;padding:10px 20px;color:#ffffffb3;text-decoration:none;font-size:14px;transition:background .15s,color .15s}.sidebar-link:hover{background:#ffffff14;color:#fff}.sidebar-link.active{background:var(--color-primary);color:#fff}.main-content{margin-left:var(--sidebar-width);flex:1;display:flex;flex-direction:column}.header{height:var(--header-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:10}.header-title{font-size:14px;font-weight:500;color:var(--color-text-muted)}.header-user{display:flex;align-items:center;gap:12px;font-size:14px}.page-content{padding:24px;flex:1}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}h1{font-size:24px;font-weight:600;margin-bottom:20px}.page-header h1{margin-bottom:0}h2{font-size:16px;font-weight:600;margin-bottom:12px}.card{background:var(--color-surface);border-radius:8px;border:1px solid var(--color-border);padding:20px;margin-bottom:16px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:20px}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:20px;text-align:center}.stat-value{font-size:32px;font-weight:700;color:var(--color-primary)}.stat-label{font-size:13px;color:var(--color-text-muted);margin-top:4px}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--color-border);font-size:14px}.table th{font-weight:600;color:var(--color-text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em}.table tr:last-child td{border-bottom:none}.table a{color:var(--color-primary);text-decoration:none}.table a:hover{text-decoration:underline}.btn{display:inline-flex;align-items:center;padding:8px 16px;border-radius:6px;font-size:14px;font-weight:500;border:none;cursor:pointer;transition:background .15s}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-secondary{background:var(--color-border);color:var(--color-text)}.btn-secondary:hover:not(:disabled){background:#cbd5e1}.form{display:flex;flex-direction:column;gap:14px;max-width:480px}.form-group{display:flex;flex-direction:column;gap:4px}.form-group label{font-size:13px;font-weight:500;color:var(--color-text-muted)}.form-group input,.form-group select{padding:8px 12px;border:1px solid var(--color-border);border-radius:6px;font-size:14px;outline:none;transition:border-color .15s}.form-group input:focus,.form-group select:focus{border-color:var(--color-primary)}.form-inline{display:flex;gap:8px;align-items:flex-end}.form-inline input{padding:8px 12px;border:1px solid var(--color-border);border-radius:6px;font-size:14px}.search-input{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:6px;font-size:14px;margin-bottom:16px;outline:none}.search-input:focus{border-color:var(--color-primary)}.filters{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:12px;font-weight:500}.badge-success{background:#dcfce7;color:var(--color-success)}.badge-muted{background:#f1f5f9;color:var(--color-text-muted)}.alert{padding:10px 14px;border-radius:6px;font-size:14px;margin-bottom:12px;background:#dbeafe;color:var(--color-primary)}.alert-error{background:#fee2e2;color:var(--color-error)}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;font-size:14px}code{background:#f1f5f9;padding:2px 6px;border-radius:4px;font-size:13px}.text-muted{color:var(--color-text-muted);font-size:14px}.loading-spinner{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:200px;gap:12px}.spinner{width:32px;height:32px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.sidebar{display:none}.main-content{margin-left:0}.stats-grid{grid-template-columns:1fr}.filters{flex-direction:column}.detail-grid{grid-template-columns:1fr}}