:root{--primary:#e1aa2a;--bg-light:#f8f9fa;--bg-dark:#1d1d3c;--bg-table-head:#f8f8f8;--text-light:#333;--text-dark:#f9fafb;--text-muted:#999;--hover-bg:#f1f1f1;--box-shadow:0 2px 5px #0000001a}body{background-color:var(--bg-light);color:var(--text-light);margin:1rem;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}h1{text-align:center;margin-bottom:1rem;font-size:2.5rem;font-weight:700}table{border-collapse:collapse;background:#fff;border:1px solid #ccc;width:100%;margin-top:1rem}th,td{text-align:left;border:1px solid #ddd;padding:.75rem}th{background:var(--bg-table-head)}.error-message{color:red;text-align:center}.container{max-width:900px;margin:auto}.app-footer{text-align:center;color:#777;background-color:#f9f9f9;width:100vw;font-size:12px;position:fixed;bottom:0;left:0;box-shadow:0 -1px 5px #0000001a}.app-footer a{color:inherit}.btn-container{align-items:center;gap:.5rem;display:flex}.btn{cursor:pointer;border:none;border-radius:4px;align-items:center;gap:.25rem;padding:.5rem 1rem;display:inline-flex}.btn.primary{background-color:var(--primary);color:var(--text-light)}.btn.secondary{background-color:var(--bg-table-head);color:var(--text-muted)}.btn.secondary:not(:disabled){color:var(--text-light)}.btn.secondary:not(:disabled):hover{color:var(--primary)}.btn:disabled{opacity:.6;cursor:not-allowed}button:disabled,.icon-btn:disabled{opacity:.6;cursor:not-allowed!important}.icon-btn{cursor:pointer;color:var(--primary);background:0 0;border:none;padding:.25rem}.icon-btn:hover{color:#e65c00}.required{color:red;margin-left:.25rem}.tabs{gap:1rem;margin-bottom:2rem;display:flex}.tab{color:var(--text-light);border-bottom:2px solid #0000;align-items:center;padding:.5rem 1rem;text-decoration:none;display:flex}.tab-icon{margin-right:6px}.tab.active{border-color:var(--primary);color:var(--primary);font-weight:700}.expenses-data-container{-webkit-overflow-scrolling:touch;width:100%;overflow-x:auto}.expense-table{border-collapse:collapse;width:100%;margin-top:1rem}.expense-table th,.expense-table td{text-align:left;border:1px solid #ddd;padding:.5rem}.expense-table th{background:var(--bg-table-head);cursor:pointer}.sort-indicator{margin-left:4px}.dialog-overlay{z-index:1000;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.dialog{background:#fff;border-radius:8px;width:100%;max-width:500px;padding:1.5rem}.dialog h3{margin-top:0}.dialog form .field{margin-bottom:1rem}.dialog form .field label{margin-bottom:.25rem;display:block}.dialog form .field input{border:1px solid #ccc;border-radius:4px;width:100%;padding:.5rem}.dialog-actions{justify-content:flex-end;gap:.5rem;display:flex}.input-full-width{width:100%}.expense-filters{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.expense-filters-row1{align-items:center;gap:8px;width:100%;margin-bottom:8px;display:flex}.expense-filters-row2{align-items:center;gap:8px;width:100%;display:flex}.expense-filters-row2 select{box-sizing:border-box;flex:1 1 0;width:100%;min-width:0;max-width:100%}.expense-filters-reset{align-items:center;margin-left:auto;display:flex}.expense-header-row{justify-content:space-between;align-items:center;gap:8px;margin-bottom:16px;display:flex;position:relative}.expense-add-btn{z-index:1;position:absolute;left:50%;transform:translate(-50%)}.expense-header-row .expense-filters-toggle{margin-left:auto;position:static}.demo-mode-banner{color:#333;text-align:center;background:#ffe066;border-radius:6px;justify-content:center;align-items:center;gap:.5rem;margin-bottom:16px;padding:.75rem 1rem;font-weight:500;display:flex}.app-header-row{justify-content:space-between;align-items:center;margin-bottom:1rem;display:flex}.app-header-actions{align-items:center;gap:.5rem;display:flex}.app-title-row{justify-content:center;align-items:center;gap:1rem;margin-bottom:1rem;display:flex}.app-title{align-items:center;gap:1rem;margin:0;display:flex}.app-title-logo{vertical-align:middle;width:auto;height:2em;display:inline-block}.language-switch-btn{cursor:pointer;vertical-align:middle;background:0 0;border:none;align-items:center;padding:0;font-size:2rem;display:inline-flex}@media (width<=700px){.expense-header-row{flex-direction:column;align-items:stretch;gap:8px;position:static}.expense-filters-row1{flex-direction:column;align-items:stretch;gap:8px;display:flex}.expense-filters-row1 .expense-filters-reset{order:-1;align-self:center;width:auto;margin:0 0 8px}.expense-filters-row2{flex-direction:column;align-items:stretch;gap:8px}.expense-filters-row2 select{width:100%;min-width:0;max-width:100%}.expense-filters-reset{justify-content:flex-end;width:100%;margin-left:0}}.pagination-controls{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-top:1rem;display:flex}.page-select,.page-size-select select,.expense-filters select{border:1px solid var(--text-muted);background-color:var(--bg-light);color:var(--text-light);cursor:pointer;border-radius:4px;padding:.4rem .75rem;font-size:1rem}.page-select:focus,.page-size-select select:focus,.expense-filters select:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 2px #007bff40}.page-size-select label{color:var(--text-light);margin-right:.5rem;font-weight:500}.page-select-wrapper{color:var(--text-light);align-items:center;gap:.25rem;margin:0 .5rem;display:flex}.page-total{color:#666;font-size:.9rem}.login-form{flex-direction:column;gap:1rem;max-width:300px;margin:2rem auto;display:flex}.empty-state{text-align:center;color:var(--text-muted);padding:1rem}.spinner-container{flex-direction:column;justify-content:center;align-items:center;margin:2rem 0;display:flex}.spinner{border:4px solid #f3f3f3;border-top:4px solid var(--primary);border-radius:50%;width:40px;height:40px;margin-bottom:1rem;animation:1s linear infinite spin}.filters{flex-wrap:wrap;align-items:flex-end;gap:1rem;margin-bottom:1rem;display:flex}.filters label{flex-direction:column;font-size:.9rem;font-weight:500;display:flex}.filters input[type=date],.expense-filters input[type=date]{border:1px solid #ccc;border-radius:4px;padding:.5rem}.form-field{margin-bottom:1rem}.form-hint{color:var(--text-muted);margin-top:-.5rem;margin-bottom:1rem;font-size:.85rem}.pivot-overview{width:100%;font-size:14px}.pivot-group{border-bottom:1px solid #ddd;margin-bottom:8px}.pivot-group-header{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;padding:8px 4px;display:flex}.pivot-group-series{-webkit-user-select:none;user-select:none;align-items:center;padding:8px 4px;display:flex}.pivot-toggle{text-align:center;width:20px;font-weight:700}.pivot-title{flex:1;margin-left:8px;font-weight:600}.pivot-total{margin-left:auto;font-weight:500}.pivot-subgroup{max-height:0;padding:0;transition:max-height .3s,padding .3s;overflow:hidden}.pivot-subgroup.open{max-height:1000px;padding:8px 0 8px 28px}.pivot-item{justify-content:space-between;padding:2px 0;display:flex}.pivot-item-amount{margin-left:auto}.pivot-grand-total{text-align:right;margin-top:20px;font-size:16px;font-weight:700}.diagonal-flag-emoji{vertical-align:middle;width:2em;height:2em;font-size:2rem;display:inline-block;position:relative}.diagonal-flag-emoji .flag-left,.diagonal-flag-emoji .flag-right{-webkit-user-select:none;user-select:none;pointer-events:none;justify-content:center;align-items:center;width:2em;height:2em;display:flex;position:absolute;top:0;left:0}.diagonal-flag-emoji .flag-left{clip-path:polygon(0 0,100% 0,0 100%)}.diagonal-flag-emoji .flag-right{clip-path:polygon(100% 0,100% 100%,0 100%)}.dark-mode-toggle{justify-content:center;align-items:center;gap:.5rem;display:flex}.dark-mode-icon-btn{cursor:pointer;color:var(--text-light);background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:.4rem;transition:background-color .3s;display:flex}.dark-mode-icon-btn:hover{color:var(--primary)}.btn-spinner{border:2px solid #fff;border-top-color:#0000;border-radius:50%;width:1rem;height:1rem;animation:.8s linear infinite btn-spin;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes btn-spin{to{transform:rotate(360deg)}}body.dark{background-color:var(--bg-dark);color:var(--text-muted)}body.dark h1{color:var(--primary)}body.dark h2{color:var(--text-dark)}body.dark .error-message{color:red!important}body.dark .expense-table th,body.dark .expense-table td{background-color:var(--bg-dark);border-color:var(--text-muted);color:var(--text-dark)}body.dark .btn.secondary{background-color:var(--bg-dark);color:var(--text-muted)}body.dark .btn.secondary:not(:disabled){color:var(--text-dark)}body.dark .btn.secondary:not(:disabled):hover{color:var(--primary)}body.dark .tabs .tab{color:var(--text-muted)}body.dark .tabs .tab.active{border-color:var(--primary);color:var(--primary)}body.dark .page-size-select label,body.dark .page-select,body.dark .page-size-select select,body.dark .expense-filters select,body.dark .page-select-wrapper{background-color:var(--bg-dark);color:var(--text-muted)}body.dark .dark-mode-icon-btn{color:var(--text-muted)}body.dark .dark-mode-icon-btn:hover{color:var(--primary)}body.dark .dialog{background-color:var(--bg-dark);color:var(--text-dark)}body.dark .pivot-title,body.dark .pivot-total,body.dark .pivot-grand-total{color:var(--text-dark)}.piechart-container{padding:1rem}.piechart-controls{justify-content:flex-end;align-items:center;gap:1rem;min-height:40px;margin-bottom:1.5rem;display:flex}.piechart-controls .pivot-grand-total{margin:0}.piechart-total{text-align:center;background-color:var(--bg-table-head);color:var(--text-light);border-radius:8px;margin-top:2rem;padding:1rem;font-size:1.25rem;font-weight:700}body.dark .piechart-total{background-color:var(--bg-dark);color:var(--text-dark)}