:root{--primary:#3b82f6;--primary-hover:#2563eb;--bg-app:#f9fafb;--bg-sidebar:#fff;--text-sidebar:#4b5563;--text-sidebar-hover:#111827;--bg-content:#fff;--text-main:#1f2937;--text-muted:#6b7280;--border-color:#f3f4f6;--purchase-header:#fffbeb;--purchase-border:#fcd34d;--sales-header:#f0fdf4;--sales-border:#86efac;--foreign-header:#f3e8ff;--foreign-border:#c084fc;--danger:#ef4444;--success:#10b981}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-app);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6;overflow:hidden}.app-layout{height:100vh;display:flex}.sidebar{background-color:var(--bg-sidebar);width:280px;color:var(--text-sidebar);border-right:1px solid var(--border-color);z-index:20;flex-direction:column;flex-shrink:0;display:flex;box-shadow:1px 0 15px #00000005}.logo{color:var(--text-main);letter-spacing:-.02em;align-items:center;gap:.75rem;padding:2rem 1.5rem;font-size:1.25rem;font-weight:700;display:flex}.logo svg{color:var(--primary)}.sidebar-section{flex-grow:1;padding:0 1.5rem 1.5rem;overflow-y:auto}.sidebar-section h3{text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:1rem;font-size:.7rem;font-weight:600}.month-list{flex-direction:column;gap:.25rem;margin-bottom:2rem;list-style:none;display:flex}.month-list li{cursor:pointer;color:var(--text-sidebar);border-radius:.5rem;justify-content:space-between;align-items:center;padding:.75rem 1rem;font-size:.9rem;font-weight:500;transition:all .2s;display:flex}.month-list li:hover{background-color:var(--bg-app);color:var(--text-sidebar-hover)}.month-list li.active{color:var(--primary);background-color:#eff6ff;font-weight:600}.sidebar-btn{background:var(--bg-app);width:100%;color:var(--text-main);cursor:pointer;border:1px dashed #d1d5db;border-radius:.5rem;justify-content:center;align-items:center;gap:.5rem;padding:.75rem;font-family:inherit;font-size:.875rem;font-weight:500;transition:all .2s;display:flex}.sidebar-btn:hover{background:#f3f4f6;border-color:#9ca3af}.sidebar-footer{border-top:1px solid var(--border-color);padding:1.5rem}.sidebar-btn.outline{border:1px solid var(--border-color);color:var(--text-muted);background:0 0}.sidebar-btn.outline:hover{background:var(--bg-app);color:var(--text-main)}.login-overlay{z-index:100;background:#fffffff2;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.login-box{border:1px solid var(--border-color);background:#fff;border-radius:1.25rem;width:100%;max-width:400px;padding:2.5rem;box-shadow:0 20px 25px -5px #0000001a}.main-content{background-color:var(--bg-app);flex-direction:column;flex-grow:1;min-width:0;display:flex}.topbar{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:10;background-color:#fffc;border-bottom:1px solid #0000000a;justify-content:space-between;align-items:center;height:80px;padding:0 2.5rem;display:flex}.topbar h1{letter-spacing:-.02em;font-size:1.5rem;font-weight:600}.topbar-right{align-items:center;gap:2rem;display:flex}.input-mode-wrapper{border:1px solid var(--border-color);background:#fff;border-radius:2rem;align-items:center;gap:.75rem;padding:.5rem 1.25rem;display:flex;box-shadow:0 2px 5px #00000005}.input-mode-wrapper label{color:var(--text-muted);font-size:.8rem;font-weight:500}.input-mode-wrapper select{color:var(--primary);cursor:pointer;background:0 0;border:none;outline:none;font-family:inherit;font-size:.875rem;font-weight:600}.save-status{color:var(--text-muted);align-items:center;gap:.5rem;font-size:.8rem;font-weight:500;display:flex}.save-status .dot{background-color:var(--success);border-radius:50%;width:6px;height:6px}.save-status.saving .dot{background-color:#f59e0b;animation:1s infinite alternate pulse}@keyframes pulse{0%{opacity:.4}to{opacity:1}}.scrollable-content{flex-grow:1;padding:2.5rem;overflow-y:auto}.tables-grid{grid-template-columns:1fr;gap:3rem;margin-bottom:3rem;display:grid}.panel{background:var(--bg-content);border:1px solid #00000005;border-radius:1.25rem;flex-direction:column;display:flex;overflow:hidden;box-shadow:0 10px 30px #00000008}.panel-header{background:var(--bg-content);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1.5rem 2rem;display:flex}.purchase-header h2{color:#d97706}.sales-header h2{color:#059669}.foreign-header{background-color:var(--foreign-header);border-bottom-color:var(--foreign-border)}.foreign-header h2{color:#7e22ce}.panel-header h2{letter-spacing:-.01em;font-size:1.1rem;font-weight:600}.add-row-btn{color:var(--text-main);border:1px solid var(--border-color);cursor:pointer;background:#fff;border-radius:2rem;padding:.5rem 1.25rem;font-family:inherit;font-size:.8rem;font-weight:500;transition:all .2s;box-shadow:0 1px 2px #00000005}.add-row-btn:hover{background:var(--bg-app);transform:translateY(-1px);box-shadow:0 4px 6px #0000000a}.table-container{padding:0 1rem;overflow-x:auto}table{border-collapse:separate;border-spacing:0;width:100%;min-width:800px;font-size:.875rem}th,td{border-bottom:1px solid var(--border-color);text-align:left;padding:.75rem .5rem}th{background-color:var(--bg-content);color:var(--text-muted);text-align:center;white-space:nowrap;letter-spacing:.05em;border-bottom:2px solid var(--border-color);padding:1rem .5rem;font-size:.75rem;font-weight:500}td.text-right{text-align:right;color:var(--text-muted);padding-right:1.5rem;font-weight:500}input{width:100%;color:var(--text-main);background-color:#f9fafb;border:1px solid #0000;border-radius:.5rem;padding:.6rem .75rem;font-family:inherit;font-size:.875rem;transition:all .2s}input:hover{background-color:#f3f4f6}input:focus{border-color:var(--primary);background-color:#fff;outline:none;box-shadow:0 0 0 3px #3b82f61a}input[type=number]{text-align:right;font-variant-numeric:tabular-nums}input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield}tfoot{background-color:var(--bg-content)}.footer-row td{text-align:right;padding:1rem .5rem}.genel-toplam td{border-top:2px solid var(--border-color)}.matrah td{color:var(--text-muted)}.kdv td{color:var(--primary);font-weight:600}.total-cell{background-color:#f8fafc;border-radius:.5rem;font-weight:600}.delete-btn{color:#d1d5db;cursor:pointer;background:0 0;border:none;border-radius:.5rem;justify-content:center;align-items:center;width:100%;padding:.4rem;transition:all .2s;display:flex}.delete-btn:hover{color:var(--danger);background-color:#fee2e2}.results-panel{grid-template-columns:repeat(4,1fr);gap:1.5rem;margin-top:1rem;display:grid}.result-card{background:var(--bg-content);text-align:center;border:1px solid #00000005;border-radius:1.5rem;flex-direction:column;justify-content:center;padding:2.5rem 2rem;transition:transform .3s;display:flex;box-shadow:0 10px 40px #0000000a}.result-card:hover{transform:translateY(-5px)}.result-card h3{text-transform:uppercase;color:var(--text-muted);letter-spacing:.1em;margin-bottom:1rem;font-size:.8rem;font-weight:600}.result-card .amount{color:var(--text-main);font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-size:2rem;font-weight:700}.result-card.highlight{background:var(--bg-content);border:2px solid var(--border-color)}.result-card:first-child{border-top-color:var(--purchase-border)}.result-card:nth-child(2){border-top-color:var(--sales-border)}.result-card:nth-child(3){border-top-color:var(--foreign-border)}.result-card.highlight .amount{color:var(--text-main)}.result-card.danger{background:#fff1f2;border:1px solid #ffe4e6}.result-card.danger h3{color:#be123c}.result-card.danger .amount{color:#9f1239}.result-card.success{background:#ecfdf5;border:1px solid #d1fae5}.result-card.success h3{color:#047857}.result-card.success .amount{color:#065f46}.modal{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100;background:#11182766;justify-content:center;align-items:center;width:100%;height:100%;display:none;position:fixed;top:0;left:0}.modal.active{animation:.2s fadeIn;display:flex}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--bg-content);border-radius:1.5rem;width:100%;max-width:400px;padding:2.5rem;box-shadow:0 25px 50px -12px #00000026}.modal-content h2{letter-spacing:-.01em;margin-bottom:2rem;font-size:1.25rem;font-weight:600}.form-group{margin-bottom:1.5rem}.form-group label{color:var(--text-muted);margin-bottom:.5rem;font-size:.875rem;font-weight:500;display:block}.form-group input,.form-group select{border:1px solid var(--border-color);background:var(--bg-app);border-radius:.75rem;width:100%;padding:.875rem;font-size:.95rem}.modal-actions{justify-content:flex-end;gap:1rem;margin-top:2.5rem;display:flex}.btn{cursor:pointer;border:none;border-radius:.75rem;padding:.75rem 1.5rem;font-family:inherit;font-size:.9rem;font-weight:500;transition:all .2s}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-hover)}.btn.outline{border:1px solid var(--border-color);color:var(--text-main);background:0 0}.btn.outline:hover{background:var(--bg-app)}.login-header{text-align:center;margin-bottom:2rem}.login-header h2{color:var(--text-main);margin-bottom:.25rem;font-size:1.75rem;font-weight:700}.login-header p{color:var(--text-muted);font-size:.9rem}.login-error{color:var(--danger);text-align:center;min-height:1.2rem;margin-top:-.5rem;margin-bottom:1rem;font-size:.85rem}