:root {
  --rail-w: 256px;
}

.sidebar {
  width: var(--rail-w);
  z-index: 45;
  overflow-x: hidden;
  transition: width 200ms ease-in-out;
}

.sidebar-toggle-row {
  display: flex;
  height: 64px;
  flex: 0 0 64px;
  align-items: center;
  justify-content: flex-end;
  padding: 0 12px;
}

.sidebar-toggle {
  display: grid;
  width: 34px;
  height: 34px;
  cursor: pointer;
  place-items: center;
  border: 1px solid var(--prizm-color-border);
  border-radius: 8px;
  background: var(--prizm-color-surface);
  color: var(--prizm-color-fg-muted);
  transition: background-color 120ms ease, color 120ms ease;
}

.sidebar-toggle:hover {
  background: var(--prizm-color-bg-subtle);
  color: var(--prizm-color-fg);
}

.sidebar-toggle svg {
  width: 18px;
  height: 18px;
}

.primary-nav {
  display: flex;
  width: 100%;
  flex: 1;
  flex-direction: column;
  overflow-y: auto;
  padding: 8px 0;
}

.primary-nav .nav-item {
  position: relative;
  display: flex;
  min-height: 44px;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  margin: 0 12px 4px;
  padding: 10px 12px;
  border: 0;
  border-radius: 8px;
  color: var(--prizm-color-fg);
  text-align: left;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  transition: background-color 100ms ease, color 100ms ease;
}

.primary-nav .nav-item svg {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  color: currentColor;
}

.primary-nav .nav-item:hover {
  background: var(--prizm-color-bg-muted);
  color: var(--prizm-color-fg);
}

.primary-nav .nav-item.active {
  border: 0;
  background: color-mix(in srgb, var(--prizm-color-accent) 9%, var(--prizm-color-surface));
  color: var(--prizm-color-accent);
  font-weight: 700;
}

.primary-nav .nav-item.active::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 3px;
  height: 24px;
  border-radius: 0 3px 3px 0;
  background: var(--prizm-color-accent);
  content: "";
  transform: translateY(-50%);
}

.sidebar-collapsed {
  --rail-w: 68px;
}

.sidebar-collapsed .sidebar-toggle-row {
  justify-content: center;
  padding: 0;
}

.sidebar-collapsed .primary-nav .nav-item {
  width: 44px;
  height: 44px;
  min-height: 44px;
  justify-content: center;
  gap: 0;
  margin: 0 auto 4px;
  padding: 10px;
}

.sidebar-collapsed .primary-nav .nav-item span {
  display: none;
}

.sidebar-collapsed .primary-nav .nav-item.active::before {
  display: none;
}

.sidebar-collapsed .primary-nav .nav-item:hover,
.sidebar-collapsed .primary-nav .nav-item:focus-visible {
  background: var(--prizm-color-bg-muted);
  color: var(--prizm-color-accent);
  outline: none;
}

.b3-nav-tooltip {
  position: fixed;
  z-index: 1300;
  max-width: 220px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--prizm-color-fg, #101c31);
  color: var(--prizm-color-surface, #fff);
  box-shadow: 0 8px 24px rgb(9 25 45 / 20%);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-4px);
  transition: opacity 100ms ease, transform 100ms ease;
  white-space: nowrap;
}

.b3-nav-tooltip.visible {
  opacity: 1;
  transform: translateX(0);
}

.app-nav-panel {
  position: fixed;
  z-index: 44;
  top: var(--header-h, 64px);
  bottom: 0;
  left: var(--rail-w);
  width: 320px;
  overflow: hidden auto;
  border-right: 1px solid var(--prizm-color-border);
  background: var(--prizm-color-surface);
  box-shadow: 12px 0 28px rgb(9 25 45 / 12%);
  transition: left 200ms ease-in-out;
}

.app-nav-panel-head {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--prizm-color-border);
}

.app-nav-panel-head div { display: grid; gap: 2px; }
.app-nav-panel-head span { color: var(--prizm-color-fg-subtle, var(--prizm-color-fg-muted)); font-size: 10px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.app-nav-panel-head strong { font-size: 18px; }
.app-nav-panel-close { width: 34px; height: 34px; display: grid; place-items: center; padding: 0; border: 1px solid var(--prizm-color-border); border-radius: var(--prizm-radius-md); background: var(--prizm-color-surface); color: var(--prizm-color-fg-muted); font-size: 21px; cursor: pointer; }
.app-nav-panel-close:hover { background: var(--prizm-color-bg-muted); color: var(--prizm-color-fg); }
.app-nav-panel-body { padding: 18px 16px; }
.app-nav-create { min-height: 46px; display: flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid var(--prizm-color-border-strong); border-radius: var(--prizm-radius-md); background: var(--prizm-color-surface); color: var(--prizm-color-fg); font-weight: 700; text-decoration: none; }
.app-nav-create:hover { background: var(--prizm-color-bg-muted); }
.app-nav-create span { font-size: 21px; font-weight: 400; }
.app-nav-divider { height: 1px; margin: 20px 0 14px; background: var(--prizm-color-border); }
.app-nav-row { min-height: 48px; display: grid; grid-template-columns: 24px minmax(0,1fr) auto; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--prizm-radius-sm); color: var(--prizm-color-fg); text-decoration: none; }
.app-nav-row:hover { background: var(--prizm-color-bg-muted); }
.app-nav-row-all { grid-template-columns: 24px minmax(0,1fr) auto auto; border: 1px solid var(--prizm-color-border); background: var(--prizm-color-bg-subtle); }
.app-nav-row-icon { color: var(--prizm-color-fg-muted); font-size: 18px; text-align: center; }
.app-nav-count { min-width: 30px; padding: 3px 7px; border-radius: 999px; background: var(--prizm-color-bg-muted); color: var(--prizm-color-fg-muted); font-size: 11px; text-align: center; }
.app-nav-select { display: grid; gap: 4px; margin-top: 8px; }
.app-nav-select > span { padding: 0 10px; color: var(--prizm-color-fg-subtle, var(--prizm-color-fg-muted)); font-size: 10px; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.app-nav-select select { width: 100%; min-height: 46px; padding: 8px 34px 8px 10px; border: 1px solid transparent; border-radius: var(--prizm-radius-sm); background-color: var(--prizm-color-surface); color: var(--prizm-color-fg); font: inherit; font-weight: 700; cursor: pointer; }
.app-nav-select select:hover { border-color: var(--prizm-color-border); background-color: var(--prizm-color-bg-muted); }
.app-nav-programme-context { margin-top: 2px; }
.app-nav-intake-select { margin: 0; padding-left: 10px; }
.app-nav-intake-select select { color: var(--prizm-color-fg-muted); font-weight: 600; }
.app-nav-submenu { display: grid; padding: 4px 0 8px 28px; }
.app-nav-submenu-programme { padding: 2px 0 4px 18px; }
.app-nav-submenu a { position: relative; min-height: 38px; display: flex; align-items: center; padding: 7px 10px 7px 18px; border-radius: var(--prizm-radius-sm); color: var(--prizm-color-fg); text-decoration: none; }
.app-nav-submenu a::before { position: absolute; left: 4px; content: "•"; }
.app-nav-submenu a:hover { background: var(--prizm-color-bg-muted); color: var(--prizm-color-accent); }
.app-nav-panel-copy { margin: 0 0 14px; color: var(--prizm-color-fg-muted); font-size: 12px; line-height: 1.5; }
.app-nav-project-links { display: grid; gap: 4px; }
.app-nav-panel :is(a,button,select):focus-visible { outline: 2px solid var(--prizm-color-focus); outline-offset: 2px; }
.toa-admin-panel[hidden] { display:none; }
.toa-admin-setting { display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px;border:1px solid var(--prizm-color-border);border-radius:var(--prizm-radius-md);cursor:pointer; }
.toa-admin-setting > span { display:grid;gap:5px; }
.toa-admin-setting strong { color:var(--prizm-color-fg);font-size:14px; }
.toa-admin-setting small { color:var(--prizm-color-fg-muted);font-size:12px;line-height:1.4; }
.toa-admin-setting input { appearance:none;position:relative;flex:0 0 38px;width:38px;height:22px;margin:0;border:1px solid var(--prizm-color-border-strong);border-radius:999px;background:var(--prizm-color-bg-muted);cursor:pointer; }
.toa-admin-setting input::after { position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--prizm-color-surface);box-shadow:0 1px 3px rgb(0 0 0 / 15%);content:"";transition:transform 120ms ease; }
.toa-admin-setting input:checked { border-color:var(--prizm-color-accent);background:var(--prizm-color-accent); }
.toa-admin-setting input:checked::after { transform:translateX(16px); }
.toa-admin-setting input:focus-visible { outline:2px solid var(--prizm-color-focus);outline-offset:3px; }

.app-main {
  transition: padding-left 200ms ease-in-out;
}

@media (max-width: 900px) {
  :root {
    --rail-w: 0px;
  }

  .sidebar,
  .sidebar-toggle-row,
  .app-nav-panel {
    display: none !important;
  }
}

/* Shared-menu hosts provide their own shell; no page-specific sidebar CSS required. */
.sidebar[data-primary-nav] {
  position: fixed;
  left: 0;
  top: var(--header-h, 64px);
  bottom: 0;
  background: var(--prizm-color-surface);
  border-right: 1px solid var(--prizm-color-border);
}
.sidebar[data-primary-nav] :is(.nav-item, .sidebar-toggle):focus-visible {
  outline: 2px solid var(--prizm-color-focus);
  outline-offset: 2px;
}