*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #f0f2f7;--surface: #ffffff;--surface-raised: #fafbfc;--border: #e2e5ec;--border-light: #eef0f4;--text: #111827;--text-secondary: #374151;--text-muted: #6b7280;--primary: #4f46e5;--primary-hover: #4338ca;--primary-light: #eef2ff;--primary-glow: rgba(79, 70, 229, .15);--danger: #ef4444;--danger-hover: #dc2626;--danger-light: #fef2f2;--success: #10b981;--success-light: #ecfdf5;--warn: #f59e0b;--warn-light: #fffbeb;--radius: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06), 0 1px 3px rgba(0, 0, 0, .06);--shadow-lg: 0 12px 48px rgba(0, 0, 0, .12), 0 2px 8px rgba(0, 0, 0, .08)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased}.container{max-width:960px;margin:0 auto;padding:24px 20px 60px}.navbar{background:linear-gradient(135deg,#111827,#1e1b4b);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 28px;height:60px;position:sticky;top:0;z-index:100;box-shadow:0 2px 12px #00000026}.navbar-brand{font-weight:800;font-size:19px;letter-spacing:1px;background:linear-gradient(135deg,#818cf8,#a5b4fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.navbar-links{display:flex;gap:4px}.navbar-links a{color:#ffffffa6;text-decoration:none;padding:8px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;transition:all .2s}.navbar-links a:hover{background:#ffffff14;color:#fff}.navbar-links a.active{background:var(--primary);color:#fff;box-shadow:0 2px 8px #4f46e566}.page h1{font-size:24px;font-weight:700;margin-bottom:24px}.page h2{font-size:18px;font-weight:600;margin-bottom:12px}.form-group{margin-bottom:18px}.form-group label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.6px;margin-bottom:6px}input,select,textarea{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:inherit;background:var(--surface);color:var(--text);transition:border-color .2s,box-shadow .2s}input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.input-sm{max-width:220px}.input-qty{width:64px;text-align:center}.select-row{display:flex;gap:8px;align-items:center}.select-row select{flex:1}.inline-form{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}.inline-form input{flex:1;min-width:140px}.hint{display:block;font-size:12px;color:var(--text-muted);margin-top:4px}hr{border:none;border-top:1px solid var(--border);margin:24px 0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:14px;font-weight:500;font-family:inherit;background:var(--surface);color:var(--text);cursor:pointer;transition:all .2s}.btn:hover{background:var(--bg);border-color:#cdd1d9}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 2px 6px #4f46e540}.btn-primary:hover:not(:disabled){background:var(--primary-hover);box-shadow:0 4px 12px #4f46e559;transform:translateY(-1px)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-sm{padding:6px 12px;font-size:13px}.btn-lg{padding:14px 28px;font-size:16px;font-weight:600}.btn-block{width:100%}.btn-icon{background:none;border:none;font-size:20px;cursor:pointer;color:var(--text-muted);padding:4px 8px;border-radius:var(--radius);line-height:1}.btn-icon:hover{background:var(--bg)}.btn-icon.btn-danger{color:var(--danger);background:none}.btn-icon.btn-danger:hover{background:#ef44441a}.sale-header{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:8px}.sale-actions{display:flex;justify-content:space-between;align-items:center;margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}.product-list{margin-top:8px;max-height:260px;overflow-y:auto;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface)}.product-item{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;cursor:pointer;transition:all .15s;border-bottom:1px solid var(--border-light)}.product-item:last-child{border-bottom:none}.product-item:hover{background:var(--primary-light)}.product-item:active{transform:scale(.995)}.product-info{display:flex;flex-direction:column}.product-sku{font-size:12px;color:var(--text-muted);font-family:monospace}.product-meta{text-align:right;display:flex;flex-direction:column}.product-price{font-weight:600}.product-stock{font-size:12px;color:var(--text-muted)}.cart{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-top:8px;box-shadow:var(--shadow)}.cart-empty{text-align:center;padding:48px 24px;color:var(--text-muted);background:var(--surface);border:2px dashed var(--border);border-radius:var(--radius-lg);margin-top:8px}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;padding:10px 14px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);background:var(--bg);border-bottom:1px solid var(--border)}td{padding:10px 14px;border-bottom:1px solid var(--border)}.mono{font-family:SF Mono,Monaco,Consolas,monospace;font-size:13px}.bold{font-weight:600}.cart-totals{padding:16px;border-top:2px solid var(--border);background:var(--bg)}.cart-row{display:flex;justify-content:space-between;padding:4px 0;font-size:14px}.cart-total{font-size:18px;font-weight:700;padding-top:8px;margin-top:8px;border-top:1px solid var(--border)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:200;animation:fadeIn .2s}.modal{background:var(--surface);border-radius:var(--radius-xl);width:100%;max-width:440px;box-shadow:var(--shadow-lg);animation:slideUp .25s cubic-bezier(.16,1,.3,1);overflow:hidden}.modal-payment{max-width:460px}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;border-bottom:1px solid var(--border-light);background:var(--surface-raised)}.modal-header h2{margin:0;font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px;color:var(--text)}.modal-header-icon{display:flex;align-items:center;color:var(--primary)}.modal-close{background:none;border:none;cursor:pointer;color:var(--text-muted);padding:6px;border-radius:var(--radius);display:flex;align-items:center;transition:all .15s}.modal-close:hover{background:var(--bg);color:var(--text)}.modal-body{padding:24px}.payment-summary{background:linear-gradient(135deg,#f8f9fc,#eef0f7);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:16px 20px;margin-bottom:24px}.payment-summary-row{display:flex;justify-content:space-between;align-items:center;padding:4px 0}.payment-summary-total{padding-top:10px;margin-top:8px;border-top:1px solid var(--border)}.payment-label{font-size:14px;color:var(--text-muted);font-weight:500}.payment-value{font-size:14px;font-weight:500;color:var(--text-secondary)}.payment-total{font-size:28px;font-weight:800;color:var(--text);letter-spacing:-.5px}.card-section{margin-bottom:20px}.card-section-header{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}.card-section-header svg{color:var(--success)}.card-fields{min-height:140px;border:2px solid var(--border);border-radius:var(--radius-lg);padding:16px;background:var(--surface);transition:border-color .2s,box-shadow .2s}.card-fields:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-glow)}.card-fields-loading{min-height:140px;border:2px dashed var(--border);border-radius:var(--radius-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-muted);font-size:13px;background:var(--surface-raised)}.btn-pay{width:100%;padding:14px 24px;font-size:16px;font-weight:700;font-family:inherit;border:none;border-radius:var(--radius-lg);background:linear-gradient(135deg,#4f46e5,#6366f1);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:all .2s;box-shadow:0 4px 14px #4f46e559}.btn-pay:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #4f46e573}.btn-pay:active:not(:disabled){transform:translateY(0)}.btn-pay:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}.payment-secured{text-align:center;margin-top:14px;font-size:11px;color:var(--text-muted);display:flex;align-items:center;justify-content:center;gap:5px;font-weight:500;letter-spacing:.3px}.payment-secured svg{color:var(--success)}.spinner{width:24px;height:24px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .6s linear infinite}.spinner-sm{width:16px;height:16px;border-width:2px}.spinner-white{border-color:#ffffff4d;border-top-color:#fff}.payment-success{text-align:center;padding:36px 0 20px}.success-icon{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,#10b981,#34d399);color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;box-shadow:0 6px 20px #10b9814d;animation:successPop .4s cubic-bezier(.16,1,.3,1)}.payment-success h3{font-size:20px;font-weight:700;color:var(--text);margin-bottom:6px}.success-sale{font-size:14px;color:var(--text-muted);font-weight:500}.success-amount{font-size:32px;font-weight:800;color:var(--success);margin-top:8px;letter-spacing:-.5px}.alert{padding:12px 16px;border-radius:var(--radius);font-size:14px;margin-bottom:16px;display:flex;align-items:center;gap:10px}.alert-error{background:var(--danger-light);color:#991b1b;border:1px solid #fecaca}.alert-error svg{flex-shrink:0;color:var(--danger)}.alert-warn{background:#fffbeb;color:#92400e;border:1px solid #fde68a}.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.4px}.badge-paid{background:#dcfce7;color:#15803d}.badge-pending{background:#fef3c7;color:#a16207}.badge-failed{background:#fee2e2;color:#dc2626}.badge-refunded{background:#e0e7ff;color:#4338ca}.filters{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.filters select,.filters input{width:auto;min-width:160px}.table-full{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}.clickable{cursor:pointer;transition:background .1s}.clickable:hover{background:#fafafe}.detail-row td{padding:0;background:var(--bg)}.sale-detail{padding:16px 20px}.detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;margin-bottom:16px;font-size:14px}.table-inner{background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}.settings-form{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:28px;max-width:600px;box-shadow:var(--shadow)}.toast{position:fixed;bottom:24px;right:24px;padding:14px 22px;border-radius:var(--radius-lg);display:flex;align-items:center;gap:12px;font-size:14px;font-weight:500;z-index:300;box-shadow:0 12px 40px #0003}.toast-success{background:linear-gradient(135deg,#166534,#15803d);color:#fff}.toast-error{background:linear-gradient(135deg,#991b1b,#dc2626);color:#fff}.toast-close{background:none;border:none;color:inherit;font-size:18px;cursor:pointer;opacity:.7}.toast-close:hover{opacity:1}.toast-enter{animation:slideUp .2s}.toast-exit{animation:fadeOut .2s forwards}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes successPop{0%{transform:scale(0);opacity:0}60%{transform:scale(1.12)}to{transform:scale(1);opacity:1}}@media(max-width:640px){.sale-header{grid-template-columns:1fr}.select-row{flex-wrap:wrap}.filters{flex-direction:column}.filters select,.filters input{width:100%}}.error-boundary{text-align:center;padding:80px 24px;max-width:480px;margin:0 auto}.error-boundary h2{font-size:24px;font-weight:700;margin-bottom:12px;color:var(--danger)}.error-boundary p{color:var(--text-muted);margin-bottom:24px}.not-found{text-align:center;padding:80px 24px}.not-found h1{font-size:72px;font-weight:800;color:var(--text-muted);margin-bottom:8px}.not-found p{font-size:18px;color:var(--text-muted);margin-bottom:24px}