*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans SC,PingFang SC,sans-serif;font-size:14px;color:#1a1a2e;background:#f0f2f5}a{text-decoration:none;color:inherit}input,select,button{font-family:inherit;font-size:inherit}.layout{display:flex;min-height:100vh}.sidebar{width:200px;background:#1a1a2e;color:#e0e0e0;display:flex;flex-direction:column;padding:20px 0;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-header{padding:0 16px 20px;border-bottom:1px solid #2d2d4a}.sidebar-header h2{font-size:16px;color:#fff;margin-bottom:4px}.user-info{font-size:12px;color:#89a}.nav{flex:1;padding:12px 0}.nav-link{display:block;padding:10px 16px;color:#b0b8c8;font-size:14px;transition:background .15s,color .15s}.nav-link:hover{background:#2d2d4a;color:#fff}.nav-link.active{background:#3a3a5c;color:#fff;border-left:3px solid #4fc3f7}.btn-logout{margin:8px 16px;padding:8px;background:transparent;border:1px solid #4a4a6a;color:#b0b8c8;border-radius:4px;cursor:pointer;font-size:13px}.btn-logout:hover{background:#3a3a5c;color:#fff}.main{margin-left:200px;flex:1;padding:24px;max-width:1100px}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:#1a1a2e}.login-form{background:#fff;padding:40px;border-radius:8px;width:360px}.login-form h1{font-size:20px;text-align:center;margin-bottom:4px}.login-subtitle{text-align:center;color:#888;font-size:13px;margin-bottom:24px}.login-form label{display:block;margin-bottom:16px;font-size:13px;color:#555}.login-form input{display:block;width:100%;padding:10px 12px;margin-top:4px;border:1px solid #d0d5dd;border-radius:6px;font-size:14px}.login-form button{width:100%;padding:10px;background:#1a1a2e;color:#fff;border:none;border-radius:6px;font-size:15px;cursor:pointer}.login-form button:disabled{opacity:.6}.page h2{font-size:18px;margin-bottom:16px}.card{background:#fff;border-radius:8px;padding:20px;margin-bottom:16px;box-shadow:0 1px 3px #00000014}.card h3{font-size:15px;margin-bottom:12px}.toolbar{display:flex;gap:8px;align-items:center;margin-bottom:16px;flex-wrap:wrap}.toolbar select{padding:6px 10px;border:1px solid #d0d5dd;border-radius:6px;background:#fff}.form-row{display:flex;gap:16px;align-items:flex-end;flex-wrap:wrap;margin-bottom:12px}.form-row label{font-size:13px;color:#555}.form-row input,.form-row select{display:block;margin-top:4px;padding:8px 10px;border:1px solid #d0d5dd;border-radius:6px;background:#fff;min-width:120px}.form-actions{display:flex;gap:8px;align-items:center;margin-top:12px}.elevator-checkboxes{display:flex;gap:12px;margin-top:4px}.checkbox-label{display:flex;align-items:center;gap:4px;cursor:pointer;font-size:14px;color:#333}.btn-primary{padding:8px 16px;background:#1a1a2e;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:13px;white-space:nowrap}.btn-primary:hover{background:#2d2d4a}.btn-primary:disabled{opacity:.6;cursor:default}.btn-secondary{padding:8px 16px;background:#fff;color:#333;border:1px solid #d0d5dd;border-radius:6px;cursor:pointer;font-size:13px;white-space:nowrap}.btn-secondary:hover{background:#f5f5f5}.btn-sm{padding:4px 10px;background:#f0f2f5;border:1px solid #d0d5dd;border-radius:4px;cursor:pointer;font-size:12px}.btn-sm:hover{background:#e0e2e6}.btn-danger{color:#d32f2f;border-color:#f5c6cb}.btn-danger:hover{background:#ffe0e0}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 3px #00000014}.table th{background:#f5f6f8;padding:10px 12px;text-align:left;font-weight:600;font-size:13px;color:#555;border-bottom:1px solid #e0e2e6}.table td{padding:10px 12px;border-bottom:1px solid #f0f2f5;font-size:13px}.table tr:last-child td{border-bottom:none}.table .empty{text-align:center;color:#999;padding:32px}.table .actions{display:flex;gap:4px}.table .cost{font-weight:600;font-variant-numeric:tabular-nums}.total-row td{font-weight:700;background:#fafbfc;border-top:2px solid #d0d5dd}.meter-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.meter-group{background:#fff;border-radius:8px;padding:20px;box-shadow:0 1px 3px #00000014}.meter-group h3{font-size:15px;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid #f0f2f5}.meter-input{display:flex;align-items:center;gap:12px;margin-bottom:10px}.meter-input span{width:32px;font-weight:600;font-size:14px}.meter-input input{flex:1;padding:8px 10px;border:1px solid #d0d5dd;border-radius:6px;font-size:14px}.meter-input input:focus{outline:none;border-color:#4fc3f7;box-shadow:0 0 0 2px #4fc3f726}.bills-section{margin-top:16px}.bill-group{margin-bottom:24px}.bill-group h3{font-size:15px;margin-bottom:8px}.error-msg{padding:10px 14px;background:#fff0f0;color:#d32f2f;border:1px solid #f5c6cb;border-radius:6px;font-size:13px;margin-bottom:12px}.success{font-size:13px;color:#2e7d32}.empty{text-align:center;color:#999;padding:48px}.loading{display:flex;align-items:center;justify-content:center;min-height:100vh;color:#888}@media print{.sidebar,.toolbar,.btn-primary,.btn-secondary,.btn-logout,.card:not(.bill-group .card){display:none!important}.main{margin-left:0;padding:0}.layout{display:block}.page{padding:0}body{background:#fff}.table{box-shadow:none}.bill-group{page-break-inside:avoid}}
