.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

.sidebar {
  background: linear-gradient(180deg, #0f172a 0%, #0b1220 100%);
  color: var(--nav-text);
  border-right: 1px solid var(--nav-border);
  display: flex;
  flex-direction: column;
  padding: var(--space-5) var(--space-4);
  gap: var(--space-5);
  box-shadow: var(--shadow-nav);
  height: 100vh;
  position: sticky;
  top: 0;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.sidebar__logo {
  height: 28px;
}


.sidebar__nav {
  display: grid;
  gap: var(--space-4);
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px 12px;
  border-radius: var(--radius-control);
  color: var(--nav-muted);
  background: transparent;
  border: 1px solid transparent;
}

.sidebar__link:hover,
.sidebar__link.is-active {
  background: var(--nav-surface);
  color: var(--nav-text);
  border-color: var(--nav-border);
}

.sidebar__group {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--nav-border);
}

.sidebar__group-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 10px 12px;
  border-radius: var(--radius-control);
  background: var(--nav-surface-2);
  border: 1px solid var(--nav-border);
  color: var(--nav-text);
  font-weight: 600;
  cursor: pointer;
  position: relative;
}

.sidebar__group-link {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 10px 12px;
  border-radius: var(--radius-control);
  background: var(--nav-surface-2);
  border: 1px solid var(--nav-border);
  color: var(--nav-text);
  font-weight: 600;
  text-decoration: none;
  position: relative;
}

.sidebar__group-link:hover {
  background: var(--nav-surface);
}

.sidebar__group-link.is-active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.sidebar__group-link.is-active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 10px;
  bottom: 10px;
  width: 4px;
  border-radius: 999px;
  background: var(--primary);
}

.sidebar__group-toggle span {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #d7dcef;
}

.sidebar__chevron {
  transition: transform 140ms ease;
  color: var(--nav-muted);
}

.sidebar__group-title {
  font-size: 11px;
  font-weight: 700;
  color: #e2e8f0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0 6px 4px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}

.sidebar__subnav {
  display: grid;
  gap: 6px;
  padding-left: 0;
}

.sidebar__subgroup {
  display: grid;
  gap: 6px;
}

.sidebar__subtoggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 8px 10px 8px 14px;
  border-radius: var(--radius-control);
  color: var(--nav-text);
  background: var(--nav-surface-2);
  border: 1px solid var(--nav-border);
  font-size: 14px;
  cursor: pointer;
}

.nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: rgba(226, 232, 240, 0.1);
  border: 1px solid rgba(226, 232, 240, 0.12);
  color: #e2e8f0;
  font-size: 12px;
}

.sidebar__group.is-active .sidebar__group-toggle {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.sidebar__group.is-active .sidebar__group-toggle::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 10px;
  bottom: 10px;
  width: 4px;
  border-radius: 999px;
  background: var(--primary);
}

.sidebar__subtoggle .sidebar__chevron {
  color: var(--nav-muted);
}

.sidebar__subsubnav {
  display: grid;
  gap: 6px;
  padding-left: 12px;
}

.sidebar__sublink {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 8px 10px 8px 14px;
  border-radius: var(--radius-control);
  color: var(--nav-muted);
  font-size: 14px;
  position: relative;
}

.sidebar__sublink::before {
  content: "";
  position: absolute;
  left: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.sidebar__sublink:hover,
.sidebar__sublink.is-active {
  background: var(--nav-surface);
  color: var(--nav-text);
}

.sidebar__sublink.is-active::before {
  background: var(--primary);
}

.sidebar__sublink.is-active {
  border: 1px solid rgba(37, 99, 235, 0.35);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

.sidebar__footer {
  margin-top: auto;
  padding: var(--space-4) var(--space-4);
  border-top: 1px solid var(--nav-border);
}

.sidebar__footer .btn {
  width: 100%;
  justify-content: flex-start;
  background: var(--nav-surface-2);
  color: var(--nav-text);
  border-color: var(--nav-border);
}

.sidebar__footer .btn:hover {
  background: var(--nav-surface);
}

.sidebar__group.is-collapsed .sidebar__subnav {
  display: none;
}

.sidebar__group.is-collapsed .sidebar__chevron {
  transform: rotate(-90deg);
}

.sidebar__subgroup.is-collapsed .sidebar__subsubnav {
  display: none;
}

.main {
  display: grid;
  grid-template-rows: var(--topbar-h) 1fr;
  min-width: 0;
}

.topbar {
  height: var(--topbar-h);
  background: linear-gradient(90deg, #0f172a 0%, #111b2f 100%);
  color: var(--nav-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--nav-border);
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar__menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-control);
  background: var(--nav-surface);
  border: 1px solid var(--nav-border);
  color: var(--nav-text);
  cursor: pointer;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.content {
  padding: var(--space-6) var(--space-6);
  overflow-wrap: anywhere;
}

.content__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.content__grid {
  display: grid;
  gap: var(--space-5);
}

.content__grid--tight {
  gap: var(--space-4);
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-2-1 { grid-template-columns: 2fr 1fr; }

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .topbar__menu-btn {
    display: inline-flex;
  }

  .sidebar {
    position: fixed;
    inset: 0;
    transform: translateX(-100%);
    transition: transform 180ms ease;
    z-index: 20;
    overflow-y: auto;
    height: 100dvh;
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 22, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
    z-index: 10;
  }

  .sidebar-overlay.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  body.nav-open {
    overflow: hidden;
  }

  .content {
    padding: var(--space-4);
  }
}

.app-shell--auth {
  grid-template-columns: 1fr;
}

.main--auth {
  grid-template-rows: var(--topbar-h) 1fr;
}

.topbar--auth {
  justify-content: flex-start;
}