.notification{position:fixed;top:20px;right:20px;padding:15px 20px;border-radius:8px;color:#fff;font-weight:500;box-shadow:0 4px 12px #00000026;display:flex;align-items:center;justify-content:space-between;min-width:300px;z-index:1000;animation:slideIn .3s ease-out}.notification.success{background-color:#28a745}.notification.error{background-color:#dc3545}.close-btn{background:none;border:none;color:#fff;font-size:1.5rem;line-height:1;cursor:pointer;margin-left:15px;padding:0}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.invoice-detail-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid var(--brand-primary)}.invoice-detail-header h1{margin:0;color:var(--brand-dark)}.controls{display:flex;gap:1rem}.print-button,.back-button,.edit-button{padding:10px 20px;border:none;border-radius:6px;cursor:pointer;font-weight:600;text-decoration:none;font-size:1rem;font-family:Poppins,sans-serif;border:1px solid;transition:all .2s}.print-button{background-color:var(--brand-primary);border-color:var(--brand-primary);color:var(--brand-dark)}.print-button:hover{background-color:#b98b3f;border-color:#b98b3f}.back-button{background-color:var(--brand-white);border-color:var(--brand-dark);color:var(--brand-dark)}.back-button:hover{background-color:var(--brand-light)}.edit-button{background-color:var(--brand-white);border-color:var(--brand-primary);color:var(--brand-primary)}.edit-button:hover{background-color:var(--brand-light);color:var(--brand-dark);border-color:var(--brand-dark)}.page-preview{display:flex;flex-direction:column;gap:1.5rem}.preview-card{background:var(--brand-white);padding:1.5rem;border-radius:var(--radius);border:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.preview-card h4{margin-top:0;margin-bottom:1rem;color:var(--brand-dark);font-size:1.2rem;border-bottom:1px solid var(--border-color);padding-bottom:.5rem}.preview-card p{margin:0 0 .5rem;line-height:1.6}:root{--brand-primary: #CE9D49;--brand-dark: #1C3B4A;--brand-light: #F9F4EA;--brand-white: #F8F8F7;--text-light: #ffffff;--text-dark: #1C3B4A;--border-color: #DEE2E6;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--radius: 8px;font-family:Poppins,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--brand-light);color:var(--text-dark)}body{margin:0}.container{width:100%;max-width:1000px;margin:2rem auto;padding:0 1rem;box-sizing:border-box}header h1{text-align:center;color:var(--brand-dark);margin-bottom:2rem;font-weight:600;font-size:2rem}form{display:flex;flex-direction:column;gap:1.5rem}fieldset{border:1px solid var(--border-color);border-radius:var(--radius);padding:1.5rem;background:var(--brand-white);box-shadow:var(--shadow-sm)}legend{font-weight:600;padding:0 .5rem;font-size:1.1rem;color:var(--brand-dark)}input,select,textarea{width:100%;padding:10px 14px;border:1px solid var(--border-color);border-radius:6px;box-sizing:border-box;transition:border-color .2s,box-shadow .2s;font-size:1rem;font-family:Poppins,sans-serif}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand-primary);box-shadow:0 0 0 3px #ce9d4940}textarea{min-height:100px;resize:vertical}label{display:block;margin-bottom:.25rem;font-weight:500}.grid-container{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.item-row-simple{display:grid;grid-template-columns:1fr 120px 100px;gap:.75rem;align-items:center;margin-bottom:.75rem}.total-row{display:flex;justify-content:space-between;align-items:center;padding:.75rem 0;border-bottom:1px solid var(--border-color)}.total-row:last-child{border-bottom:none}.total-row label{font-weight:600;font-size:1.1rem;margin:0}.total-row input{max-width:150px;text-align:right;background-color:var(--brand-light);font-weight:600;font-size:1.1rem}.total-row span{font-weight:600;font-size:1.1rem;color:var(--brand-dark)}button{padding:10px 15px;border:none;border-radius:6px;cursor:pointer;font-weight:500;transition:all .2s;font-family:Poppins,sans-serif;font-size:1rem}button.remove-btn{background-color:#fee2e2;color:#ef4444}button.remove-btn:hover{background-color:#fecaca;color:#b91c1c}button.add-btn{background-color:#ebf5ff;color:#007bff;font-weight:600;width:fit-content}button.add-btn:hover{background-color:#d6efff}button.submit-btn{background-color:var(--brand-primary);color:var(--brand-dark);padding:14px 24px;font-size:1.1rem;margin-top:1rem;font-weight:600}button.submit-btn:hover{background-color:#b98b3f;box-shadow:var(--shadow-md)}.main-nav{background-color:var(--brand-dark);padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;color:var(--text-light);box-shadow:var(--shadow-md);position:relative}.main-nav a{color:var(--text-light);text-decoration:none;font-weight:500}.nav-links{display:flex;align-items:center}.nav-link{margin-left:1.5rem;padding:.5rem 1rem;border-radius:6px;transition:background-color .2s}.nav-link:hover,.nav-link.active{background-color:#3a5b6a}.logo-link{font-size:1.5rem;font-weight:700;letter-spacing:-1px}.menu-toggle{display:none}.invoice-list-container{padding:2rem;background:var(--brand-white);border-radius:var(--radius);box-shadow:var(--shadow-md)}.list-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;flex-wrap:wrap;gap:1rem}.list-header h2{margin:0;font-size:1.8rem;color:var(--brand-dark)}.search-input{width:100%;max-width:320px}.invoice-list-container table{width:100%;border-collapse:collapse;margin-top:1rem}.invoice-list-container th,.invoice-list-container td{border-bottom:1px solid var(--border-color);padding:12px 15px;text-align:left}.invoice-list-container th{background-color:var(--brand-light);font-weight:600;color:var(--brand-dark);border-top:1px solid var(--border-color)}th.sortable{cursor:pointer;-webkit-user-select:none;user-select:none}th.sortable:hover{background-color:#f1e9da}.action-buttons{display:flex;gap:.5rem}.action-buttons a,.action-buttons button{padding:6px 12px;text-decoration:none;border-radius:5px;font-weight:500;font-size:.875rem;border:1px solid transparent;cursor:pointer;transition:all .2s}.view-button{background-color:var(--brand-light);color:var(--brand-dark);border-color:var(--brand-dark)}.view-button:hover{background-color:var(--brand-dark);color:var(--brand-white)}.edit-button{background-color:var(--brand-light);color:var(--brand-primary);border-color:var(--brand-primary)}.edit-button:hover{background-color:var(--brand-primary);color:var(--brand-dark)}.delete-button{background-color:#fee2e2;color:#b91c1c}.delete-button:hover{background-color:#fecaca}.tabs{display:flex;margin-bottom:1.5rem;border-bottom:2px solid var(--border-color)}.tabs button{padding:1rem 1.5rem;border:none;background-color:transparent;cursor:pointer;font-size:1rem;font-weight:500;color:#6c757d;position:relative;top:2px;border-bottom:2px solid transparent}.tabs button.active{color:var(--brand-primary);font-weight:600;border-bottom:2px solid var(--brand-primary)}@media(max-width:768px){.container{padding:0 .5rem;margin:1rem auto}.grid-container,.item-row-simple{grid-template-columns:1fr}.item-row-simple input,.item-row-simple button{margin-bottom:.5rem}.menu-toggle{display:block;background:none;border:none;color:#fff;font-size:2rem}.nav-links{display:none;position:absolute;top:100%;right:0;background-color:var(--brand-dark);width:100%;flex-direction:column;align-items:stretch;padding:0}.nav-links.active{display:flex}.nav-link{margin:0;text-align:center;padding:1rem;border-top:1px solid #3a5b6a}.invoice-list-container table{border:0}.invoice-list-container thead{display:none}.invoice-list-container tr{display:block;margin-bottom:1rem;border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.invoice-list-container td{display:block;text-align:right;border:none;border-bottom:1px solid var(--border-color);padding-left:50%;position:relative}.invoice-list-container td:before{content:attr(data-label);position:absolute;left:15px;width:calc(50% - 30px);text-align:left;font-weight:700;color:var(--brand-dark)}.invoice-list-container td:last-child{border-bottom:none}.action-buttons{justify-content:flex-end}}