:root{--bg-color: #f9fafb;--sidebar-bg: #ffffff;--text-main: #111827;--text-muted: #6b7280;--accent-color: #0ea5e9;--border-color: #e5e7eb}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased}.erp-container{display:flex;height:100vh;overflow:hidden;position:relative}.sidebar{width:260px;background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);display:flex;flex-direction:column;z-index:50;transition:all .3s ease;flex-shrink:0}@media(min-width:769px){.sidebar.sidebar-closed{margin-left:-260px}}.logo-container{display:flex;align-items:center;gap:12px;padding:24px 20px;border-bottom:1px solid var(--border-color)}.logo-icon{color:var(--accent-color)}.logo-container h2{margin:0;font-size:1.1rem;font-weight:700;letter-spacing:-.5px;white-space:nowrap}.btn-close-sidebar{background:none;border:none;padding:4px;color:var(--text-muted);cursor:pointer;margin-left:auto}.nav-menu{flex:1;padding:20px 12px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}.nav-group{display:flex;flex-direction:column}.nav-group-title{font-size:.7rem;font-weight:700;color:#9ca3af;text-transform:uppercase;letter-spacing:.05em;padding:12px 12px 4px}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;text-decoration:none;color:var(--text-muted);font-weight:500;transition:all .2s ease;white-space:nowrap}.nav-item:hover{background-color:#f3f4f6;color:var(--text-main)}.router-link-exact-active{background-color:#eff6ff;color:var(--accent-color);font-weight:600}.nav-item-parent{display:flex;align-items:center;justify-content:space-between;border-radius:8px;transition:all .2s ease}.nav-item-parent:hover{background-color:#f3f4f6}.nav-item-link{display:flex;align-items:center;gap:12px;padding:10px 12px;text-decoration:none;color:var(--text-muted);font-weight:500;flex:1;white-space:nowrap}.nav-item-link:hover{color:var(--text-main)}.active-parent{color:var(--accent-color);font-weight:600}.btn-toggle-menu{background:none;border:none;padding:10px;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center}.btn-toggle-menu:hover{color:var(--text-main)}.nav-submenu{display:flex;flex-direction:column;gap:4px;padding-left:36px;margin-top:4px}.nav-subitem{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;text-decoration:none;color:#6b7280;font-size:.9rem;font-weight:500;transition:.2s;white-space:nowrap}.nav-subitem:hover{background-color:#f3f4f6;color:var(--text-main)}.nav-submenu .router-link-exact-active{background-color:transparent;color:var(--accent-color);font-weight:600}.nav-footer{padding:20px 12px;border-top:1px solid var(--border-color)}.main-content{flex:1;display:flex;flex-direction:column;background-color:var(--bg-color);min-width:0;transition:width .3s ease}.topbar{height:64px;background-color:var(--sidebar-bg);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 24px}.btn-hamburger{display:flex;background:none;border:none;padding:8px;color:var(--text-main);cursor:pointer;border-radius:6px;transition:.2s}.btn-hamburger:hover{background:#f3f4f6}.user-profile{display:flex;align-items:center;gap:12px;font-weight:500}.avatar{width:32px;height:32px;background-color:var(--accent-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}.page-container{padding:32px;overflow-y:auto;flex:1}@media(max-width:768px){.sidebar{position:fixed;top:0;left:0;height:100vh;transform:translate(-100%);margin-left:0}.sidebar.sidebar-open{transform:translate(0);box-shadow:4px 0 15px #0000001a}.desktop-only{display:none}.topbar{padding:0 16px}.page-container{padding:16px}.sidebar-overlay{position:fixed;inset:0;background:#11182766;z-index:40;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:fadeIn .3s ease}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}