:root{--primary: #6366f1;--primary-hover: #4f46e5;--primary-light: #e0e7ff;--primary-dark: #3730a3;--primary-rgb: 99, 102, 241;--secondary: #8b5cf6;--secondary-hover: #7c3aed;--accent: #06b6d4;--accent-hover: #0891b2;--success: #10b981;--success-light: #d1fae5;--success-dark: #059669;--warning: #f59e0b;--warning-light: #fef3c7;--warning-dark: #d97706;--danger: #ef4444;--danger-light: #fee2e2;--danger-dark: #dc2626;--info: #3b82f6;--info-light: #dbeafe;--info-dark: #2563eb;--bg-primary: #f8fafc;--bg-secondary: #ffffff;--bg-tertiary: #f1f5f9;--bg-hover: #e2e8f0;--bg-sidebar: #0f172a;--bg-sidebar-hover: #1e293b;--bg-card: #ffffff;--bg-input: #ffffff;--bg-modal: #ffffff;--bg-tooltip: #1e293b;--text-primary: #0f172a;--text-secondary: #475569;--text-tertiary: #94a3b8;--text-inverse: #ffffff;--text-sidebar: #cbd5e1;--text-sidebar-active: #ffffff;--text-link: #6366f1;--border: #e2e8f0;--border-light: #f1f5f9;--border-focus: #6366f1;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px -1px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 8px 10px -6px rgba(0, 0, 0, .1);--sidebar-width: 260px;--sidebar-collapsed-width: 70px;--header-height: 64px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-xs: .75rem;--font-sm: .875rem;--font-base: 1rem;--font-lg: 1.125rem;--font-xl: 1.25rem;--font-2xl: 1.5rem;--font-3xl: 1.875rem;--radius-sm: .375rem;--radius: .5rem;--radius-md: .625rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--transition-fast: .15s ease;--transition: .2s ease;--transition-slow: .3s ease}[data-theme=dark]{--primary: #818cf8;--primary-hover: #6366f1;--primary-light: #1e1b4b;--primary-dark: #a5b4fc;--success-light: #064e3b;--warning-light: #78350f;--danger-light: #7f1d1d;--info-light: #1e3a5f;--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #0f172a;--bg-hover: #334155;--bg-sidebar: #020617;--bg-sidebar-hover: #0f172a;--bg-card: #1e293b;--bg-input: #0f172a;--bg-modal: #1e293b;--bg-tooltip: #f1f5f9;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-tertiary: #64748b;--text-inverse: #0f172a;--text-sidebar: #94a3b8;--text-sidebar-active: #ffffff;--text-link: #818cf8;--border: #334155;--border-light: #1e293b;--border-focus: #818cf8;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow: 0 1px 3px 0 rgba(0, 0, 0, .4), 0 1px 2px -1px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4), 0 2px 4px -2px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5), 0 4px 6px -4px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .5), 0 8px 10px -6px rgba(0, 0, 0, .4)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}body{font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;transition:background-color var(--transition),color var(--transition)}a{color:var(--text-link);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--primary-hover)}img{max-width:100%;height:auto}input,select,textarea,button{font-family:inherit;font-size:inherit}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-sidebar);height:100vh;position:fixed;top:0;left:0;z-index:100;display:flex;flex-direction:column;transition:transform var(--transition-slow),width var(--transition-slow);overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--bg-sidebar-hover) transparent}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-thumb{background:var(--bg-sidebar-hover);border-radius:var(--radius-full)}.sidebar-header{padding:1.25rem 1rem;display:flex;align-items:center;gap:.75rem;border-bottom:1px solid rgba(255,255,255,.08);min-height:var(--header-height)}.sidebar-logo{width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:var(--font-lg);flex-shrink:0}.sidebar-brand{color:#fff;font-weight:700;font-size:var(--font-lg);white-space:nowrap}.sidebar-brand small{display:block;font-size:var(--font-xs);color:var(--text-sidebar);font-weight:400}.sidebar-nav{padding:.75rem 0;flex:1}.nav-section{padding:.5rem 1rem;margin-top:.25rem}.nav-section-title{text-transform:uppercase;font-size:.65rem;font-weight:600;color:var(--text-tertiary);letter-spacing:.08em;padding:.5rem 0}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.6rem 1rem;margin:.125rem .6rem;color:var(--text-sidebar);border-radius:var(--radius);cursor:pointer;transition:all var(--transition-fast);font-size:var(--font-sm);font-weight:500;text-decoration:none;position:relative;white-space:nowrap}.nav-item:hover{background:var(--bg-sidebar-hover);color:var(--text-sidebar-active)}.nav-item.active{background:rgba(var(--primary-rgb),.15);color:var(--primary)}.nav-item.active:before{content:"";position:absolute;left:-.6rem;top:50%;transform:translateY(-50%);width:3px;height:60%;background:var(--primary);border-radius:var(--radius-full)}.nav-icon{width:20px;height:20px;flex-shrink:0;opacity:.7}.nav-item.active .nav-icon,.nav-item:hover .nav-icon{opacity:1}.nav-badge{margin-left:auto;background:var(--danger);color:#fff;font-size:.65rem;padding:.1rem .4rem;border-radius:var(--radius-full);font-weight:600;min-width:18px;text-align:center}.nav-group-toggle{cursor:pointer;-webkit-user-select:none;user-select:none}.nav-group-toggle .nav-chevron{margin-left:auto;transition:transform var(--transition-fast);width:16px;height:16px}.nav-group-toggle.open .nav-chevron{transform:rotate(90deg)}.nav-group-items{overflow:hidden;max-height:0;transition:max-height var(--transition-slow)}.nav-group-items.open{max-height:500px}.nav-group-items .nav-item{padding-left:2.75rem;font-size:.8rem}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh;transition:margin-left var(--transition-slow)}.header{height:var(--header-height);background:var(--bg-secondary);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 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rgba(var(--primary-rgb),.1)}.search-icon{width:16px;height:16px;color:var(--text-tertiary);flex-shrink:0}.search-input{border:none;background:none;outline:none;color:var(--text-primary);width:100%;font-size:var(--font-sm)}.search-input::placeholder{color:var(--text-tertiary)}.header-right{display:flex;align-items:center;gap:.5rem}.header-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:.5rem;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);position:relative}.header-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.header-btn svg{width:20px;height:20px}.header-btn .notification-dot{position:absolute;top:6px;right:6px;width:8px;height:8px;background:var(--danger);border-radius:50%;border:2px solid var(--bg-secondary)}.dropdown{position:relative}.dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);min-width:200px;padding:.5rem;z-index:200;animation:dropdown-in .15s ease}@keyframes dropdown-in{0%{opacity:0;transform:translateY(-8px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.dropdown-item{display:flex;align-items:center;gap:.75rem;padding:.6rem .75rem;color:var(--text-secondary);border-radius:var(--radius);cursor:pointer;font-size:var(--font-sm);transition:all var(--transition-fast);border:none;background:none;width:100%;text-align:left}.dropdown-item:hover{background:var(--bg-hover);color:var(--text-primary)}.dropdown-divider{border-top:1px solid var(--border);margin:.25rem 0}.user-avatar{width:34px;height:34px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:var(--font-sm);cursor:pointer;transition:box-shadow var(--transition-fast)}.user-avatar:hover{box-shadow:0 0 0 3px rgba(var(--primary-rgb),.2)}.page-content{padding:1.5rem}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;flex-wrap:wrap;gap:1rem}.page-title{font-size:var(--font-2xl);font-weight:700;color:var(--text-primary)}.page-subtitle{font-size:var(--font-sm);color:var(--text-secondary);margin-top:.25rem}.breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:var(--font-sm);color:var(--text-tertiary)}.breadcrumb a{color:var(--text-link)}.breadcrumb .separator{color:var(--text-tertiary)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition),border-color var(--transition)}.card:hover{box-shadow:var(--shadow)}.card-header{padding:1rem 1.25rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:1rem}.card-title{font-weight:600;font-size:var(--font-base);color:var(--text-primary)}.card-body{padding:1.25rem}.card-footer{padding:1rem 1.25rem;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:flex-end;gap:.5rem}.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin-bottom:1.5rem}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem;display:flex;align-items:flex-start;justify-content:space-between;transition:all var(--transition-fast);position:relative;overflow:hidden}.stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.stat-card.stat-sales:before{background:linear-gradient(90deg,var(--primary),var(--secondary))}.stat-card.stat-purchase:before{background:linear-gradient(90deg,var(--info),var(--accent))}.stat-card.stat-expense:before{background:linear-gradient(90deg,var(--warning),#f97316)}.stat-card.stat-profit:before{background:linear-gradient(90deg,var(--success),#34d399)}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.stat-info h3{font-size:var(--font-sm);font-weight:500;color:var(--text-secondary);margin-bottom:.5rem}.stat-value{font-size:var(--font-2xl);font-weight:700;color:var(--text-primary)}.stat-change{font-size:var(--font-xs);font-weight:500;margin-top:.5rem;display:flex;align-items:center;gap:.25rem}.stat-change.up{color:var(--success)}.stat-change.down{color:var(--danger)}.stat-icon{width:44px;height:44px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;flex-shrink:0}.stat-icon.sales{background:var(--primary-light);color:var(--primary)}.stat-icon.purchase{background:var(--info-light);color:var(--info)}.stat-icon.expense{background:var(--warning-light);color:var(--warning)}.stat-icon.profit{background:var(--success-light);color:var(--success)}.stat-icon svg{width:22px;height:22px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.5rem 1rem;border:1px solid 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svg{width:16px;height:16px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover{background:var(--bg-hover)}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:var(--success-dark)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-dark)}.btn-warning{background:var(--warning);color:#fff}.btn-warning:hover{background:var(--warning-dark)}.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-sm{padding:.35rem .75rem;font-size:var(--font-xs)}.btn-lg{padding:.65rem 1.5rem;font-size:var(--font-base)}.btn-icon{padding:.5rem}.form-group{margin-bottom:1rem}.form-label{display:block;font-size:var(--font-sm);font-weight:500;color:var(--text-primary);margin-bottom:.375rem}.form-label .required{color:var(--danger);margin-left:.125rem}.form-control{width:100%;padding:.55rem .85rem;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:var(--font-sm);transition:all var(--transition-fast);outline:none}.form-control:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.1)}.form-control::placeholder{color:var(--text-tertiary)}.form-control.is-invalid{border-color:var(--danger)}.form-error{color:var(--danger);font-size:var(--font-xs);margin-top:.25rem}.form-hint{color:var(--text-tertiary);font-size:var(--font-xs);margin-top:.25rem}select.form-control{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8.825L.35 3.175l.7-.7L6 7.425l4.95-4.95.7.7z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .75rem center;padding-right:2.5rem}textarea.form-control{resize:vertical;min-height:80px}.form-check{display:flex;align-items:center;gap:.5rem;cursor:pointer}.form-check input[type=checkbox],.form-check input[type=radio]{width:16px;height:16px;accent-color:var(--primary);cursor:pointer}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.table-container{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-lg)}.table{width:100%;border-collapse:collapse;font-size:var(--font-sm)}.table thead{background:var(--bg-tertiary)}.table th{padding:.75rem 1rem;text-align:left;font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border);white-space:nowrap;font-size:var(--font-xs);text-transform:uppercase;letter-spacing:.05em}.table td{padding:.75rem 1rem;border-bottom:1px solid var(--border-light);color:var(--text-primary);vertical-align:middle}.table tbody tr{transition:background var(--transition-fast)}.table tbody tr:hover{background:var(--bg-hover)}.table tbody tr:last-child td{border-bottom:none}.badge{display:inline-flex;align-items:center;padding:.2rem .6rem;font-size:var(--font-xs);font-weight:600;border-radius:var(--radius-full);white-space:nowrap}.badge-primary{background:var(--primary-light);color:var(--primary)}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:300;display:flex;align-items:center;justify-content:center;padding:1rem;animation:fade-in .15s ease}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-modal);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:100%;max-width:600px;max-height:90vh;overflow-y:auto;animation:modal-in .2s ease}@keyframes modal-in{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.modal-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.modal-title{font-weight:600;font-size:var(--font-lg);color:var(--text-primary)}.modal-body{padding:1.5rem}.modal-footer{padding:1rem 1.5rem;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:.5rem}.alert{padding:.75rem 1rem;border-radius:var(--radius);border:1px solid;font-size:var(--font-sm);display:flex;align-items:center;gap:.75rem;margin-bottom:1rem;animation:slide-in .3s ease}@keyframes slide-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.alert-success{background:var(--success-light);border-color:var(--success);color:var(--success-dark)}.alert-warning{background:var(--warning-light);border-color:var(--warning);color:var(--warning-dark)}.alert-danger{background:var(--danger-light);border-color:var(--danger);color:var(--danger-dark)}.alert-info{background:var(--info-light);border-color:var(--info);color:var(--info-dark)}.toast-container{position:fixed;top:1rem;right:1rem;z-index:500;display:flex;flex-direction:column;gap:.5rem}.toast{padding:.75rem 1rem;border-radius:var(--radius);box-shadow:var(--shadow-lg);font-size:var(--font-sm);display:flex;align-items:center;gap:.5rem;min-width:280px;animation:toast-in .3s ease}@keyframes toast-in{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.pagination{display:flex;align-items:center;gap:.25rem;justify-content:center;padding:1rem 0}.pagination-btn{padding:.4rem .7rem;border:1px solid var(--border);background:var(--bg-secondary);color:var(--text-secondary);border-radius:var(--radius);cursor:pointer;font-size:var(--font-sm);transition:all var(--transition-fast)}.pagination-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.pagination-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.pagination-btn:disabled{opacity:.4;cursor:not-allowed}.pos-layout{display:grid;grid-template-columns:1fr 380px;gap:1rem;height:calc(100vh - var(--header-height) - 3rem)}.pos-products{display:flex;flex-direction:column;gap:1rem;overflow:hidden}.pos-product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:.75rem;overflow-y:auto;flex:1;padding:.25rem}.pos-product-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:.75rem;cursor:pointer;text-align:center;transition:all var(--transition-fast)}.pos-product-item:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.pos-product-item .product-name{font-size:var(--font-sm);font-weight:500;color:var(--text-primary);margin-top:.5rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pos-product-item .product-price{font-size:var(--font-xs);color:var(--primary);font-weight:600;margin-top:.25rem}.pos-cart{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);display:flex;flex-direction:column;overflow:hidden}.pos-cart-header{padding:1rem;border-bottom:1px solid var(--border);font-weight:600}.pos-cart-items{flex:1;overflow-y:auto;padding:.5rem}.pos-cart-item{display:flex;align-items:center;gap:.75rem;padding:.5rem;border-bottom:1px solid var(--border-light)}.pos-cart-footer{padding:1rem;border-top:1px solid 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