:root[data-theme=dark]{--bg: #0b1220;--text: #e5e7eb;--accent: #22d3ee;--card: #111827;--muted: #9ca3af;--surface: #1f2937;--surface-hover: #243144;--border: #334155;--modal: #0b1220}:root[data-theme=light]{--bg: #f8fafc;--text: #0f172a;--accent: #0ea5e9;--card: #ffffff;--muted: #475569;--surface: #e2e8f0;--surface-hover: #cbd5e1;--border: #cbd5e1;--modal: #ffffff}:root{--bg: #0b1220;--text: #e5e7eb;--accent: #22d3ee;--card: #111827;--muted: #9ca3af;--surface: #1f2937;--surface-hover: #243144;--border: #334155;--modal: #0b1220}*,*:before,*:after{box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,Arial,Noto Sans,"Apple Color Emoji","Segoe UI Emoji";margin:0}img{max-width:100%}button{background:var(--surface);color:var(--text);border:0;border-radius:8px;padding:8px 12px;cursor:pointer}input,select,textarea{background:var(--modal);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px;width:100%;text-transform:uppercase}label{display:block;font-size:12px;color:#9ca3af;margin-bottom:6px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--surface);color:var(--text);border:0;border-radius:8px;cursor:pointer}.icon-btn:hover{background:var(--surface-hover)}.icon-btn:focus{outline:2px solid #22d3ee55;outline-offset:2px}.icon-btn svg{width:20px;height:20px}.icon-btn.danger{background:#ef4444;color:#fff}.icon-btn.danger:hover{background:#dc2626}.icon-btn.primary{background:var(--accent);color:#052b35}.icon-btn.primary:hover{background:#1acde0}.primary-btn{background:#16a34a;color:#fff}.primary-btn:hover{background:#15803d}.primary-btn:focus{outline:2px solid #22d3ee55;outline-offset:2px}input[type=file]{background:var(--modal);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px}input[type=file]::file-selector-button{margin-right:12px;border:0;background:var(--surface);color:var(--text);padding:8px 12px;border-radius:8px;cursor:pointer}input[type=file]::file-selector-button:hover{background:var(--surface-hover)}input[type=file]:focus{outline:2px solid #22d3ee55;outline-offset:2px}.file-name{font-size:12px;color:var(--muted);margin-top:6px}.error{color:#ef4444;margin-top:6px;font-size:14px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px}.card .value{font-size:24px;margin-top:8px;color:var(--accent)}.login{display:grid;place-items:center;height:100vh;padding:16px}.login-card{width:360px;max-width:92vw;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:24px}.danger-btn{background:#ef4444;color:#fff}.danger-btn:hover{background:#dc2626}.danger-btn:disabled{opacity:.5;cursor:not-allowed}.secondary-btn{background:var(--surface);color:var(--text)}.secondary-btn:hover{background:var(--surface-hover)}.app{display:flex;flex-direction:column;min-height:100vh}.header{width:100%;background:var(--card);border-bottom:1px solid var(--border);display:flex;flex-direction:row;align-items:center;padding:0 16px;flex-shrink:0;height:60px;box-sizing:border-box;position:sticky;top:0;z-index:100}.main{flex:1;overflow-y:auto;background:var(--bg);height:calc(100vh - 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60px)}}@media (max-width: 768px){.header{align-items:center;justify-content:space-between}.brand div small,.nav-desktop,.user{display:none}.header-actions{margin-left:auto}.view-toggle{display:none}.mobile-menu-btn{display:inline-flex;align-items:center;justify-content:center}.mobile-menu{display:none;flex-direction:column;gap:14px;padding:14px 16px 18px;background:var(--card);border-bottom:1px solid var(--border)}.mobile-menu.open{display:flex}.mobile-menu-section{display:flex;flex-direction:column;gap:8px}.mobile-menu-title{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.mobile-menu a,.mobile-menu button,.mobile-menu-user{width:100%;text-align:left;border-radius:10px;border:1px solid var(--border);background:var(--modal);color:var(--text);padding:10px 12px;text-decoration:none}.page-shell{padding:14px}.page-toolbar{flex-direction:column;align-items:stretch}.page-toolbar-actions,.filters-row{width:100%}.page-toolbar-actions>*{flex:1 1 180px}.filters-row>div{flex:1 1 180px;min-width:0}.responsive-two-col,.responsive-form-grid,.responsive-three-col,.responsive-category-grid,.responsive-stats-grid{grid-template-columns:1fr}.responsive-modal,.responsive-detail-modal{width:min(96vw,720px);padding:16px;border-radius:18px}.pos-container{flex-direction:column;height:auto;padding:74px 14px 14px}.pos-floating-actions{left:12px;right:12px;top:12px;justify-content:flex-end}.pos-left-panel{min-height:auto}.pos-filters{gap:10px;padding:14px}.pos-filters>div,.pos-filters>button{flex:1 1 100%}.pos-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));grid-auto-rows:auto;overflow-y:visible;padding-right:0}.pos-cart{width:100%}.products-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.table-scroll table,.products-list table{min-width:720px}}@media (max-width: 480px){.brand strong{font-size:13px}.page-shell{padding:12px}.products-grid,.pos-grid{grid-template-columns:1fr}.pos-floating-actions{gap:8px}.pos-floating-actions button{padding:9px 12px}.mobile-menu a,.mobile-menu button,.mobile-menu-user{font-size:14px}}