/* Broker-inspired workspace navigation, adapted for ViaMax BusinessBook. */
.app-shell{grid-template-columns:278px minmax(0,1fr);background:linear-gradient(135deg,#07111f 0%,#0a1726 52%,#0d1c2b 100%)}
.sidebar{position:sticky;top:0;height:100vh;overflow:hidden;padding:18px 14px;background:rgba(7,17,31,.94);border-right:1px solid rgba(148,163,184,.14);box-shadow:12px 0 38px rgba(0,0,0,.16);backdrop-filter:blur(18px)}
.brand{min-height:68px;padding:8px 10px 18px;border-bottom:1px solid rgba(148,163,184,.14);gap:12px}.brand img{width:94px;max-height:38px;object-fit:contain;object-position:left center}.brand strong{font-size:13px;letter-spacing:.01em}.brand small{font-size:10px;letter-spacing:.04em;color:#6f879d}
#nav{display:flex;flex:1;flex-direction:column;gap:4px;overflow-y:auto;overflow-x:hidden;padding:16px 0;scrollbar-width:thin}.nav-label{padding:10px 12px 5px;color:#6e8499;font-size:9px;letter-spacing:.16em}.nav-item{display:flex;align-items:center;gap:0;width:48px;min-height:42px;padding:7px;border:1px solid transparent;border-radius:12px;background:transparent;color:#91a5b8;transition:width .18s ease,background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;overflow:hidden;text-align:left;flex:0 0 auto}.nav-item:hover,.nav-item:focus-visible,.nav-item.active{width:100%;gap:10px;color:#f4f7fb;background:linear-gradient(90deg,rgba(81,197,201,.16),rgba(81,197,201,.04));border-color:rgba(81,197,201,.24);box-shadow:inset 3px 0 0 var(--accent)}.nav-item-icon{display:grid;place-items:center;width:32px;height:32px;flex:0 0 32px;border:1px solid rgba(148,163,184,.16);border-radius:10px;background:rgba(255,255,255,.04);font-size:16px;color:#9db3c6}.nav-item:hover .nav-item-icon,.nav-item.active .nav-item-icon{color:#baf4f0;border-color:rgba(81,197,201,.38);background:rgba(81,197,201,.12)}.nav-copy{display:grid;min-width:0;gap:1px;white-space:nowrap}.nav-item-label{font-size:12px;font-weight:650}.nav-hint{font-size:9px;color:#6f879d;text-transform:capitalize}.nav-logout{margin:0;padding:12px 10px;border:1px solid rgba(148,163,184,.14);border-radius:10px;color:#91a5b8}.nav-logout:hover{color:#fff;background:#172d42;border-color:#31526d}
.topbar{height:86px;padding:0 36px;background:rgba(9,22,36,.78);border-bottom:1px solid rgba(148,163,184,.14);box-shadow:0 8px 28px rgba(0,0,0,.12)}.topbar h2{font-size:27px;letter-spacing:-.02em}.main{background:radial-gradient(circle at 88% 8%,rgba(81,197,201,.08),transparent 26%)}.notice{border-radius:12px;box-shadow:0 12px 28px rgba(0,0,0,.12)}.card,.kpi{border-color:rgba(148,163,184,.15);box-shadow:0 16px 34px rgba(0,0,0,.14),inset 0 1px 0 rgba(255,255,255,.025)}
@media(max-width:900px){.app-shell{display:block}.sidebar{position:sticky;height:auto;z-index:4;padding:12px;border-right:0;border-bottom:1px solid rgba(148,163,184,.14);box-shadow:0 10px 28px rgba(0,0,0,.18)}.brand{justify-content:flex-start;padding:4px 8px 12px}.brand img{width:84px}#nav{display:flex;flex-direction:row;gap:5px;overflow-x:auto;overflow-y:hidden;padding:10px 0 4px}.nav-label{display:none}.nav-item,.nav-item:hover,.nav-item:focus-visible,.nav-item.active{width:auto;min-width:max-content;gap:8px;box-shadow:none}.nav-copy{display:grid}.nav-item-icon{width:28px;height:28px;flex-basis:28px;font-size:14px}.nav-logout{position:absolute;right:14px;top:12px;width:auto;margin:0;padding:8px 10px}.topbar{padding:0 18px}}
@media(max-width:520px){.brand strong{font-size:12px}.brand small{font-size:9px}.nav-item-label{font-size:11px}.nav-hint{display:none}.topbar h2{font-size:22px}}