:root{--accent:#3b82f6;--accent-light:#60a5fa;--accent-dark:#2563eb;--dark:#1a1a1a;--darker:#111;--card:#242424;--card2:#2e2e2e;--border:#3a3a3a;--text:#f0f0f0;--muted:#888;--danger:#ef4444;--success:#22c55e;--warning:#f59e0b;--info:#3b82f6;--sidebar-width:240px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--darker);color:var(--text);min-height:100vh;font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:14px}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;font-family:inherit;font-size:14px}input,select,textarea{font-family:inherit;font-size:14px}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--dark)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.app-layout{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--dark);border-right:1px solid var(--border);z-index:100;flex-direction:column;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-logo{border-bottom:1px solid var(--border);padding:20px 16px}.sidebar-logo h1{color:var(--accent);font-size:18px;font-weight:700}.sidebar-logo p{color:var(--muted);margin-top:2px;font-size:11px}.sidebar-nav{flex:1;padding:12px 0;overflow-y:auto}.nav-item{color:var(--muted);cursor:pointer;border-left:3px solid #0000;align-items:center;gap:10px;padding:10px 16px;font-size:14px;text-decoration:none;transition:all .15s;display:flex}.nav-item:hover{background:var(--card);color:var(--text)}.nav-item.active{color:var(--accent);border-left-color:var(--accent);background:#3b82f61a}.nav-item .nav-icon{font-size:16px}.sidebar-bottom{border-top:1px solid var(--border);padding:12px 16px}.user-info{margin-bottom:10px}.user-info .user-name{color:var(--text);font-size:13px;font-weight:600}.user-info .user-role{color:var(--muted);font-size:11px}.main-content{margin-left:var(--sidebar-width);min-height:100vh;max-width:calc(100vw - var(--sidebar-width));flex:1;padding:24px}.page-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.page-title{color:var(--text);font-size:22px;font-weight:700}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px;display:grid}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:10px;flex-direction:column;gap:8px;padding:20px;display:flex}.stat-label{color:var(--muted);text-transform:uppercase;letter-spacing:.5px;font-size:12px}.stat-value{color:var(--accent);font-size:28px;font-weight:700}.stat-sub{color:var(--muted);font-size:12px}.table-wrapper{border:1px solid var(--border);border-radius:10px;overflow-x:auto}table{border-collapse:collapse;width:100%}thead th{background:var(--card);text-align:left;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);border-bottom:1px solid var(--border);white-space:nowrap;padding:12px 16px;font-size:11px}tbody tr{border-bottom:1px solid var(--border);transition:background .1s}tbody tr:last-child{border-bottom:none}tbody tr:hover{background:var(--card2)}tbody td{color:var(--text);vertical-align:middle;padding:12px 16px}.btn{white-space:nowrap;border-radius:6px;align-items:center;gap:6px;padding:8px 16px;font-weight:500;transition:all .15s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-dark)}.btn-secondary{background:var(--card2);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.btn-danger{color:var(--danger);background:#ef444426;border:1px solid #ef44444d}.btn-danger:hover{background:#ef444440}.btn-success{color:var(--success);background:#22c55e26;border:1px solid #22c55e4d}.btn-success:hover{background:#22c55e40}.btn-warning{color:var(--warning);background:#f59e0b26;border:1px solid #f59e0b4d}.btn-warning:hover{background:#f59e0b40}.btn-info{color:var(--accent-light);background:#3b82f626;border:1px solid #3b82f64d}.btn-info:hover{background:#3b82f640}.btn-sm{padding:5px 10px;font-size:12px}.btn-icon{color:var(--muted);background:0 0;border-radius:6px;padding:6px;transition:all .15s}.btn-icon:hover{background:var(--card2);color:var(--text)}.btn-logout{width:100%;color:var(--danger);background:#ef44441a;border:1px solid #ef444433;border-radius:6px;padding:8px;font-weight:500;transition:all .15s}.btn-logout:hover{background:#ef444433}.form-group{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}.form-label{color:var(--muted);font-size:13px;font-weight:500}.form-control{background:var(--darker);border:1px solid var(--border);color:var(--text);border-radius:6px;outline:none;width:100%;padding:9px 12px;transition:border-color .15s}.form-control:focus{border-color:var(--accent)}.form-control option{background:var(--darker)}textarea.form-control{resize:vertical;min-height:80px}.modal-overlay{z-index:1000;background:#000000b3;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:var(--card);border:1px solid var(--border);border-radius:12px;flex-direction:column;width:100%;max-width:600px;max-height:90vh;display:flex;overflow-y:auto}.modal-lg{max-width:960px}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px 24px 16px;display:flex}.modal-title{font-size:17px;font-weight:600}.modal-body{flex:1;padding:20px 24px}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:10px;padding:16px 24px 20px;display:flex}.search-bar{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px;display:flex}.search-input{background:var(--card);border:1px solid var(--border);max-width:320px;color:var(--text);border-radius:6px;outline:none;flex:1;padding:8px 12px}.search-input:focus{border-color:var(--accent)}.badge{text-transform:uppercase;letter-spacing:.3px;border-radius:20px;align-items:center;padding:3px 10px;font-size:11px;font-weight:600;display:inline-flex}.badge-draft{color:var(--muted);background:#88888826;border:1px solid #8888884d}.badge-sent{color:var(--accent-light);background:#3b82f626;border:1px solid #3b82f64d}.badge-paid{color:var(--success);background:#22c55e26;border:1px solid #22c55e4d}.badge-cancelled{color:var(--danger);background:#ef444426;border:1px solid #ef44444d}.login-wrapper{background:var(--darker);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{background:var(--card);border:1px solid var(--border);border-radius:12px;width:100%;max-width:400px;padding:40px}.login-logo{text-align:center;margin-bottom:32px}.login-logo h1{color:var(--accent);font-size:24px;font-weight:700}.login-logo p{color:var(--muted);margin-top:4px;font-size:13px}.alert{border-radius:6px;margin-bottom:16px;padding:10px 14px;font-size:13px}.alert-error{color:#fca5a5;background:#ef44441a;border:1px solid #ef44444d}.alert-success{color:#86efac;background:#22c55e1a;border:1px solid #22c55e4d}.actions{align-items:center;gap:6px;display:flex}.item-row{background:var(--card2);border:1px solid var(--border);border-radius:8px;grid-template-columns:2fr 70px 90px 100px 90px 36px;align-items:end;gap:8px;margin-bottom:10px;padding:12px;display:grid}.pagination{justify-content:center;align-items:center;gap:8px;margin-top:20px;display:flex}.empty-state{text-align:center;color:var(--muted);padding:48px 20px}.empty-state p{margin-bottom:4px;font-size:15px}.empty-state span{font-size:13px}.form-grid-2{grid-template-columns:1fr 1fr;gap:0 16px;display:grid}.section-title{color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-top:20px;margin-bottom:12px;font-size:13px;font-weight:600}.total-row{border-top:1px solid var(--border);justify-content:flex-end;align-items:center;gap:16px;margin-top:12px;padding:12px 0;display:flex}.total-label{color:var(--muted);font-size:14px}.total-value{color:var(--accent);font-size:20px;font-weight:700}.filter-tabs{flex-wrap:wrap;gap:6px;margin-bottom:16px;display:flex}.filter-tab{border:1px solid var(--border);color:var(--muted);cursor:pointer;background:0 0;border-radius:20px;padding:6px 14px;font-size:13px;transition:all .15s}.filter-tab:hover{background:var(--card2);color:var(--text)}.filter-tab.active{color:var(--accent);background:#3b82f626;border-color:#3b82f666}.spinner{border:2px solid #3b82f64d;border-top-color:var(--accent);border-radius:50%;width:20px;height:20px;animation:.7s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.loading-center{justify-content:center;align-items:center;padding:60px;display:flex}.detail-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:20px;display:grid}.detail-item label{color:var(--muted);text-transform:uppercase;letter-spacing:.4px;margin-bottom:4px;font-size:11px;display:block}.detail-item span{color:var(--text);font-size:14px;font-weight:500}.item-header{grid-template-columns:2fr 70px 90px 100px 90px 36px;gap:8px;margin-bottom:4px;display:grid}.item-header span{color:var(--muted);text-transform:uppercase;letter-spacing:.3px;font-size:11px}input[type=checkbox]{accent-color:var(--accent)}.inner-table{border-collapse:collapse;width:100%;margin-top:8px}.inner-table th{color:var(--muted);text-transform:uppercase;letter-spacing:.3px;text-align:left;border-bottom:1px solid var(--border);background:var(--darker);padding:8px 12px;font-size:11px}.inner-table td{border-bottom:1px solid var(--border);padding:8px 12px;font-size:13px}.inner-table tr:last-child td{border-bottom:none}.gap-8{align-items:center;gap:8px;display:flex}.text-right{text-align:right}.text-muted{color:var(--muted)}.fw-600{font-weight:600}.mt-8{margin-top:8px}.mb-16{margin-bottom:16px}@media print{.sidebar,.print-controls,.app-layout>.sidebar{display:none!important}.main-content{max-width:100%!important;margin-left:0!important;padding:0!important}body{color:#111!important;background:#fff!important}.print-wrapper{box-shadow:none!important}}