.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 280px;
  padding: 1.4rem;
  background: rgba(21, 24, 27, 0.64);
  border-right: 1px solid rgba(217, 220, 223, 0.14);
  backdrop-filter: blur(22px) saturate(140%);
  z-index: 30;
  transition: width .22s ease, transform .25s ease, padding .22s ease;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding-bottom: 1.4rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.brand-logo {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--lime-primary);
  color: var(--lime-primary);
  border-radius: 14px;
  box-shadow: 0 0 24px var(--lime-muted);
  overflow: hidden;
}
.brand-logo img { width: 100%; height: 100%; object-fit: cover; }
.sidebar-brand strong { display: block; color: var(--soft-gray-100); font-size: 1.25rem; }
.sidebar-brand small { display: block; margin-top: 0.12rem; }
.sidebar-nav { display: grid; gap: 0.4rem; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 44px;
  padding: 0.72rem 0.85rem;
  color: var(--soft-gray-300);
  border-left: 3px solid transparent;
  border-radius: 12px;
  transition: border-color .2s, color .2s, background .2s, transform .2s;
}
.sidebar-nav a:hover, .sidebar-nav a.active {
  color: var(--lime-primary);
  background: var(--lime-muted);
  border-left-color: var(--lime-primary);
}
.app-main { margin-left: 280px; min-height: 100vh; transition: margin-left .22s ease; }
.nav-collapsed .sidebar {
  width: 84px;
  padding: 1rem 0.75rem;
}
.nav-collapsed .sidebar-brand span:last-child,
.nav-collapsed .sidebar-nav a {
  font-size: 0;
}
.nav-collapsed .sidebar-brand {
  justify-content: center;
}
.nav-collapsed .sidebar-nav a {
  justify-content: center;
  padding-inline: 0.65rem;
}
.nav-collapsed .sidebar-nav a .svg-icon {
  width: 22px;
  height: 22px;
}
.nav-collapsed .app-main {
  margin-left: 84px;
}
.topbar {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 2rem;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 17, 19, 0.54);
  backdrop-filter: blur(22px) saturate(140%);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-logo {
  width: min(360px, 34vw);
  height: 72px;
  object-fit: contain;
  opacity: 0.9;
}
.content-shell { padding: 2rem; display: grid; gap: 1.6rem; }
.user-menu { display: flex; align-items: center; gap: 0.65rem; color: var(--soft-gray-200); }
.user-avatar {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--lime-primary);
}
.mobile-menu-button { display: grid; }
.sidebar-backdrop { display: none; }
.dashboard-grid, .scan-layout, .settings-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 1.4rem;
}