.language-switcher{display:flex;gap:.5rem;align-items:center}.lang-button{display:flex;align-items:center;gap:.25rem;padding:.375rem .75rem;border:2px solid var(--border-color, #e5e7eb);border-radius:.5rem;background:var(--bg-color, #ffffff);color:var(--text-color, #374151);cursor:pointer;transition:all .2s ease;font-size:.875rem;font-weight:500;line-height:1}.lang-button:hover{border-color:var(--primary-color, #3b82f6);background:var(--hover-bg, #f3f4f6);transform:translateY(-1px)}.lang-button:active{transform:translateY(0)}.lang-button.active{border-color:var(--primary-color, #3b82f6);background:var(--primary-color, #3b82f6);color:#fff}.lang-button.active:hover{background:var(--primary-dark, #2563eb);border-color:var(--primary-dark, #2563eb)}.lang-button .flag{font-size:1.25rem;line-height:1}.lang-button .lang-code{font-size:.75rem;font-weight:600;letter-spacing:.025em}[data-theme=dark] .lang-button{--border-color: #4b5563;--bg-color: #374151;--text-color: #f9fafb;--hover-bg: #4b5563;--primary-color: #60a5fa;--primary-dark: #3b82f6}.lang-button:focus-visible{outline:2px solid var(--primary-color, #3b82f6);outline-offset:2px}@media(max-width:640px){.lang-button{padding:.25rem .5rem}.lang-button .flag{font-size:1rem}.lang-button .lang-code{display:none}}.transaction-tracker{max-width:1200px;margin:0 auto;padding:2rem;min-height:100vh}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid var(--border-color)}.header h1{font-size:2rem;font-weight:700;color:var(--text-primary);margin:0}.header-controls{display:flex;align-items:center;gap:1rem}.theme-toggle{background:var(--card-bg);border:2px solid var(--border-color);border-radius:.5rem;padding:.75rem 1rem;font-size:1.5rem;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.theme-toggle:hover{transform:scale(1.1);border-color:var(--primary-color)}.theme-toggle:active{transform:scale(.95)}.content{display:flex;flex-direction:column;gap:2rem}.input-section{display:flex;flex-direction:column;gap:.75rem}.input-label{font-weight:600;color:var(--text-primary);font-size:1.1rem}.transaction-input{width:100%;padding:1rem;border:2px solid var(--border-color);border-radius:.5rem;background:var(--card-bg);color:var(--text-primary);font-family:Courier New,monospace;font-size:.95rem;line-height:1.6;resize:vertical;transition:border-color .2s ease}.transaction-input:focus{outline:none;border-color:var(--primary-color)}.transaction-input::placeholder{color:var(--text-secondary);opacity:.6}.input-hint{color:var(--text-secondary);font-size:.9rem;font-style:italic;margin:0}.summary-section{margin-top:1rem}.summary-card{background:var(--card-bg);border:2px solid var(--border-color);border-radius:.75rem;padding:1.5rem}.summary-card h2{margin:0 0 1.5rem;color:var(--text-primary);font-size:1.5rem;font-weight:600}.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.summary-item{display:flex;flex-direction:column;gap:.5rem}.summary-label{color:var(--text-secondary);font-size:.9rem;font-weight:500}.summary-value{color:var(--text-primary);font-size:1.75rem;font-weight:700;font-family:Courier New,monospace}.summary-value.total{color:var(--success-color)}.transactions-section h2{margin:0 0 1rem;color:var(--text-primary);font-size:1.5rem;font-weight:600}.transactions-table-wrapper{overflow-x:auto;border-radius:.75rem;border:2px solid var(--border-color)}.transactions-table{width:100%;border-collapse:collapse;background:var(--card-bg)}.transactions-table thead{background:var(--table-header-bg);border-bottom:2px solid var(--border-color)}.transactions-table th{padding:1rem;text-align:left;font-weight:600;color:var(--text-primary);font-size:.95rem;text-transform:uppercase;letter-spacing:.5px}.transactions-table th.amount-col{text-align:right}.transactions-table th.highlight{color:var(--success-color)}.transactions-table tbody tr{border-bottom:1px solid var(--border-color);transition:background-color .15s ease}.transactions-table tbody tr:hover{background:var(--row-hover-bg)}.transactions-table tbody tr:last-child{border-bottom:none}.transactions-table td{padding:1rem;color:var(--text-primary)}.transactions-table td.amount-col{text-align:right;font-family:Courier New,monospace;font-weight:500}.transactions-table td.amount-col.highlight{color:var(--success-color);font-weight:700}.date-cell{display:flex;flex-direction:column;gap:.25rem}.date-cell .date{font-weight:600;color:var(--text-primary)}.date-cell .time{font-size:.85rem;color:var(--text-secondary)}.action-cell{color:var(--text-secondary)}.transactions-table tfoot{border-top:2px solid var(--border-color);background:var(--table-footer-bg)}.transactions-table tfoot td{padding:1rem;font-weight:700}.total-label{text-align:right;color:var(--text-primary);font-size:1.1rem}.total-value{color:var(--success-color);font-size:1.25rem}.empty-state{padding:3rem;text-align:center;background:var(--card-bg);border:2px dashed var(--border-color);border-radius:.75rem;color:var(--text-secondary)}.empty-state p{margin:0;font-size:1.1rem}@media(max-width:768px){.transaction-tracker{padding:1rem}.header{flex-direction:column;gap:1rem;align-items:flex-start}.header h1{font-size:1.5rem}.header-controls{width:100%;justify-content:space-between}.summary-grid{grid-template-columns:1fr}.transactions-table th,.transactions-table td{padding:.75rem .5rem;font-size:.9rem}.summary-value{font-size:1.5rem}}:root[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--card-bg: #ffffff;--text-primary: #1a1a1a;--text-secondary: #6c757d;--border-color: #dee2e6;--primary-color: #0066cc;--success-color: #28a745;--table-header-bg: #f8f9fa;--table-footer-bg: #f8f9fa;--row-hover-bg: #f1f3f5}:root[data-theme=dark]{--bg-primary: #1a1a1a;--bg-secondary: #2d2d2d;--card-bg: #2d2d2d;--text-primary: #f8f9fa;--text-secondary: #adb5bd;--border-color: #495057;--primary-color: #4d9fff;--success-color: #51cf66;--table-header-bg: #343a40;--table-footer-bg: #343a40;--row-hover-bg: #383838}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;transition:background-color .3s ease,color .3s ease;min-height:100vh}h1,h2,h3,h4,h5,h6{line-height:1.2;font-weight:600}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit;font-size:inherit}:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px}html{scroll-behavior:smooth}::selection{background-color:var(--primary-color);color:#fff}button{background:none;border:none;padding:0;font:inherit;cursor:pointer}#root{min-height:100vh}