.app-shell { min-height: 100vh; display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); transition: grid-template-columns 210ms ease; }
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 0%, rgba(20,100,244,.25), transparent 25%),
    linear-gradient(180deg, #0d1522 0%, #09111d 100%);
  color: #fff;
  padding: 22px 16px 18px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid rgba(255,255,255,.055);
}
.sidebar::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .15; background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px); background-size: 28px 28px; mask-image: linear-gradient(to bottom, #000, transparent 72%); }
.sidebar > * { position: relative; z-index: 1; }
.sidebar-brand { display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: 12px; padding: 2px 7px 24px; }
.sidebar-brand-copy { min-width: 0; }
.sidebar-brand strong { display: block; font-size: 16px; letter-spacing: -.02em; }
.sidebar-brand span { display: block; margin-top: 2px; color: #8f9bad; font-size: 12px; }
.sidebar-toggle { width: 31px; height: 31px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.09); border-radius: 9px; background: rgba(255,255,255,.045); color: #8fa0b5; transition: background var(--transition), color var(--transition), border-color var(--transition), transform 210ms ease; }
.sidebar-toggle:hover { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.15); }
.sidebar-toggle svg { width: 16px; height: 16px; transition: transform 210ms ease; }
.nav-section { margin: 15px 8px 7px; color: #5f6d82; font-size: 10px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.sidebar nav { display: grid; gap: 4px; flex: 1 1 auto; min-height: 0; overflow-y: auto; overflow-x: hidden; padding-right: 2px; scrollbar-width: thin; }
.nav-item { width: 100%; min-height: 43px; display: flex; align-items: center; gap: 11px; border: 1px solid transparent; border-radius: 11px; padding: 10px 11px; text-align: left; color: #a9b4c4; background: transparent; font-size: 13px; font-weight: 760; transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition); }
.nav-item .nav-icon { width: 18px; height: 18px; opacity: .82; }
.nav-item:hover { color: #fff; background: rgba(255,255,255,.055); transform: translateX(2px); }
.nav-item.active { color: #fff; border-color: rgba(36,118,255,.30); background: linear-gradient(90deg, rgba(20,100,244,.24), rgba(20,100,244,.075)); box-shadow: inset 3px 0 0 #2e7cff; }
.nav-item.active .nav-icon { color: #62a0ff; opacity: 1; }
.sidebar-footer { margin-top: auto; padding-top: 16px; }
.sidebar-user { margin-bottom: 10px; padding: 12px; border: 1px solid rgba(255,255,255,.07); border-radius: 13px; background: rgba(255,255,255,.035); }
.sidebar-user-name { color: #f7f9fc; font-size: 13px; font-weight: 800; }
.sidebar-user-role { margin-top: 2px; color: #748399; font-size: 11px; }
.sidebar .btn-secondary { border-color: rgba(255,255,255,.08); background: rgba(255,255,255,.045); color: #c7d0dc; box-shadow: none; }
.sidebar .btn-secondary:hover { background: rgba(255,255,255,.08); color: #fff; }

@media (min-width: 981px) {
  body.sidebar-collapsed .app-shell { grid-template-columns: 84px minmax(0, 1fr); }
  body.sidebar-collapsed .sidebar { padding-left: 12px; padding-right: 12px; }
  body.sidebar-collapsed .sidebar-brand { grid-template-columns: 1fr; justify-items: center; gap: 9px; padding-left: 0; padding-right: 0; }
  body.sidebar-collapsed .sidebar-brand-copy { display: none; }
  body.sidebar-collapsed .sidebar-toggle svg { transform: rotate(180deg); }
  body.sidebar-collapsed .nav-section { height: 1px; margin: 13px 7px 8px; overflow: hidden; background: rgba(255,255,255,.065); color: transparent; font-size: 0; }
  body.sidebar-collapsed .nav-item { justify-content: center; gap: 0; padding-left: 0; padding-right: 0; }
  body.sidebar-collapsed .nav-item:hover { transform: none; }
  body.sidebar-collapsed .nav-label { display: none; }
  body.sidebar-collapsed .sidebar-user { display: none; }
  body.sidebar-collapsed .sidebar-footer { display: grid; justify-items: center; }
  body.sidebar-collapsed #logout-btn { width: 44px; padding-left: 0; padding-right: 0; }
  body.sidebar-collapsed #logout-btn .btn-label { display: none; }
}

.main-area { min-width: 0; min-height: 100vh; background: var(--bg); }
.topbar { min-height: 82px; padding: 16px 30px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border-bottom: 1px solid rgba(203,213,225,.82); background: rgba(248,250,252,.91); backdrop-filter: blur(14px); position: sticky; top: 0; z-index: 30; }
.topbar-title { display: flex; align-items: center; gap: 14px; }
.topbar-title h1 { margin: 0; color: var(--text-strong); font-size: 25px; }
.topbar-title p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.status-pill { display: inline-flex; align-items: center; gap: 7px; height: 35px; padding: 0 11px; border: 1px solid var(--border); border-radius: 999px; background: rgba(255,255,255,.9); color: var(--muted); font-size: 11px; font-weight: 800; box-shadow: var(--shadow-sm); }
.status-dot { width: 7px; height: 7px; border-radius: 999px; background: var(--success); box-shadow: 0 0 0 4px rgba(19,138,91,.10); }
.user-chip { display: flex; align-items: center; gap: 9px; padding: 6px 9px 6px 7px; border: 1px solid var(--border); border-radius: 999px; background: rgba(255,255,255,.92); box-shadow: var(--shadow-sm); }
.user-avatar { width: 29px; height: 29px; display: grid; place-items: center; border-radius: 999px; background: linear-gradient(145deg, var(--primary), var(--system)); color: white; font-size: 11px; font-weight: 900; }
.user-chip span { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; font-weight: 750; }
.view-container { width: min(1580px, 100%); margin: 0 auto; padding: 26px 30px 42px; }

.mobile-menu { display: none; }
@media (max-width: 980px) {
  .sidebar-toggle { display: none; }
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 80; width: min(290px, 84vw); transform: translateX(-105%); transition: transform 220ms ease; box-shadow: var(--shadow-lg); }
  body.sidebar-open .sidebar { transform: translateX(0); }
  body.sidebar-open::after { content: ""; position: fixed; inset: 0; z-index: 70; background: rgba(5,14,27,.48); backdrop-filter: blur(2px); }
  .mobile-menu { display: inline-flex; }
  .topbar { padding: 14px 18px; }
  .topbar-title h1 { font-size: 22px; }
  .status-pill { display: none; }
  .view-container { padding: 20px 16px 34px; }
}
@media (max-width: 560px) {
  .user-chip span { display: none; }
  .topbar-title p { display: none; }
}