:root {
  --app-sidebar-width: 248px;
  --app-sidebar-collapsed-width: 88px;
  --app-sidebar-header-height: var(--shell-header-height, var(--app-shell-header-height, 58px));
}

.layout {
  display: grid;
  grid-template-columns: var(--app-sidebar-width) minmax(0, 1fr);
  align-items: start;
  min-height: calc(100vh - var(--app-sidebar-header-height));
  transition: grid-template-columns 180ms ease;
  overflow-x: clip;
}

.layout.sidebar-collapsed,
.sidebar-collapsed-pref .layout {
  grid-template-columns: var(--app-sidebar-collapsed-width) minmax(0, 1fr);
}

.left {
  background:
    radial-gradient(680px 360px at -10% -8%, rgba(71, 202, 255, 0.28), transparent 44%),
    radial-gradient(540px 280px at 104% 14%, rgba(120, 176, 255, 0.2), transparent 42%),
    linear-gradient(180deg, #183b95 0%, #2445ab 38%, #2d4fbc 100%);
  color: #f5fbff;
  padding: 10px 14px 18px;
  border-right: 1px solid rgba(173, 216, 255, 0.14);
  box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: sticky;
  top: var(--app-sidebar-header-height);
  height: calc(100vh - var(--app-sidebar-header-height));
  max-height: calc(100vh - var(--app-sidebar-header-height));
  overflow: visible;
  z-index: 1200;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 auto;
  min-height: 0;
  border: 0;
  box-shadow: none;
  overflow-y: auto;
  overflow-x: visible;
  padding-right: 2px;
  scrollbar-width: thin;
  scrollbar-color: rgba(219, 234, 254, 0.5) transparent;
}

.side-nav::-webkit-scrollbar {
  width: 6px;
}

.side-nav::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(219, 234, 254, 0.45);
}

.left .tab-btn {
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 22px;
  padding: 11px 14px;
  margin: 0;
  color: #edf7ff;
  background: transparent;
  text-decoration: none;
  transition: transform 120ms ease, background 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.left .tab-btn:hover {
  transform: translateX(2px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.08);
}

.left .tab-btn.sidebar-management-link {
  margin-top: auto;
}

.left .tab-btn.active {
  position: relative;
  background: #f8fbff;
  border-color: rgba(191, 219, 254, 0.95);
  color: #123a7a;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.left .tab-btn.active .tab-icon,
.left .tab-btn.active .tab-label {
  color: #123a7a;
}

.left .tab-btn.active .tab-icon {
  background: #e4efff;
  border-radius: 14px;
  box-shadow: inset 0 0 0 1px rgba(23, 70, 162, 0.08);
}

.left .tab-icon {
  width: 30px;
  height: 30px;
  min-width: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #f3faff;
}

.left .tab-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.left .tab-label {
  white-space: nowrap;
}

.sidebar-head {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-top: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  flex: 0 0 auto;
}

.sidebar-collapse {
  width: 28px;
  min-width: 28px;
  height: 28px;
  min-height: 28px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(248, 251, 255, 0.9);
  box-shadow: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 140ms ease, color 140ms ease;
}

.sidebar-collapse:hover {
  transform: translateY(-1px);
  color: #ffffff;
}

.sidebar-collapse:active {
  transform: translateY(0) scale(0.97);
}

.sidebar-collapse:focus-visible {
  outline: none;
  color: #ffffff;
}

.sidebar-collapse svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 2.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 180ms ease;
}

.layout.sidebar-collapsed .sidebar-collapse svg,
.sidebar-collapsed-pref .layout .sidebar-collapse svg {
  transform: rotate(180deg);
}

.layout.sidebar-collapsed .tab-btn,
.sidebar-collapsed-pref .layout .tab-btn {
  position: relative;
  justify-content: center;
  min-height: 52px;
  padding: 11px 8px;
  border-radius: 18px;
}

.layout.sidebar-collapsed .tab-icon,
.sidebar-collapsed-pref .layout .tab-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
}

.layout.sidebar-collapsed .tab-btn.active .tab-icon,
.sidebar-collapsed-pref .layout .tab-btn.active .tab-icon {
  background: transparent;
  box-shadow: none;
}

.layout.sidebar-collapsed .tab-icon svg,
.sidebar-collapsed-pref .layout .tab-icon svg {
  width: 30px;
  height: 30px;
}

.layout.sidebar-collapsed .tab-label,
.sidebar-collapsed-pref .layout .tab-label {
  display: none;
}

.layout.sidebar-collapsed .tab-btn::after,
.sidebar-collapsed-pref .layout .tab-btn::after {
  display: none;
}

.layout.sidebar-collapsed .sidebar-head,
.sidebar-collapsed-pref .layout .sidebar-head {
  justify-content: center;
}

@media (max-width: 900px) {
  .layout,
  .layout.sidebar-collapsed,
  .sidebar-collapsed-pref .layout {
    grid-template-columns: 1fr;
  }

  .left {
    position: static;
    display: block;
    height: auto;
    max-height: none;
    overflow: visible;
  }

  .side-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
  }

  .layout.sidebar-collapsed .tab-btn,
  .sidebar-collapsed-pref .layout .tab-btn {
    justify-content: flex-start;
    min-height: 0;
    padding: 11px 14px;
  }

  .layout.sidebar-collapsed .tab-icon,
  .sidebar-collapsed-pref .layout .tab-icon {
    width: 30px;
    height: 30px;
    min-width: 30px;
  }

  .layout.sidebar-collapsed .tab-icon svg,
  .sidebar-collapsed-pref .layout .tab-icon svg {
    width: 24px;
    height: 24px;
  }

  .layout.sidebar-collapsed .tab-label,
  .sidebar-collapsed-pref .layout .tab-label {
    display: inline;
  }

  .layout.sidebar-collapsed .tab-btn::after,
  .sidebar-collapsed-pref .layout .tab-btn::after {
    display: none;
  }
}