.app-bar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 8px;
  height: var(--header-h);
  padding: 0 16px;
  background: var(--bg);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-right: 24px;
  flex: none;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-accent {
  color: var(--brand-mark);
}

.brand-tag {
  align-self: center;
  margin-left: 6px;
  padding: 1px 7px;
  border: 1px solid var(--border);
  border-radius: var(--pill);
  color: var(--text-2);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0;
}

.search {
  display: flex;
  flex: 1;
  max-width: 640px;
  height: 40px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--pill);
  background: var(--bg-subtle);
}

.search:focus-within {
  border-color: var(--brand);
  background: var(--bg);
}

.search input {
  flex: 1;
  min-width: 0;
  padding: 0 16px;
  border: 0;
  outline: none;
  background: transparent;
  font-size: 15px;
}

.search input::-webkit-search-cancel-button {
  display: none;
}

.search-kbd {
  align-self: center;
  margin-right: 10px;
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text-3);
  font-family: var(--font);
  font-size: 12px;
  line-height: 1.4;
  pointer-events: none;
}

.search:focus-within .search-kbd {
  display: none;
}

.search-clear {
  align-self: center;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-right: 4px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text-2);
  font-size: 18px;
  line-height: 1;
}

.search-clear:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.search-btn {
  display: grid;
  place-items: center;
  width: 64px;
  border: 0;
  border-left: 1px solid var(--border);
  background: var(--bg-chip);
  color: var(--text-2);
}

.search-btn:hover {
  background: #e9e9e9;
  color: var(--text);
}

.app-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex: none;
}

.shell {
  padding-top: var(--header-h);
}

.sidebar {
  position: fixed;
  top: var(--header-h);
  bottom: 0;
  left: 0;
  z-index: 40;
  width: var(--sidebar-w);
  padding: 12px;
  overflow-y: auto;
  background: var(--bg);
  scrollbar-width: thin;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 12px;
  border-radius: 10px;
  font-size: 14px;
}

.nav-item:hover {
  background: var(--bg-hover);
}

.nav-item[aria-current="page"] {
  background: var(--bg-chip);
  font-weight: 600;
}

.nav-heading {
  padding: 10px 12px 4px;
  font-size: 13px;
  font-weight: 600;
}

.nav-group {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.nav-sub {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  height: 36px;
  padding: 0 12px;
  border-radius: 10px;
  color: var(--text-2);
  font-size: 13px;
}

.nav-sub:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.nav-sub[aria-current="page"] {
  background: var(--bg-chip);
  color: var(--text);
  font-weight: 600;
}

.nav-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-count {
  color: var(--text-3);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.nav-divider {
  margin: 10px 4px;
  border: 0;
  border-top: 1px solid var(--border);
}

.nav-note {
  padding: 4px 12px 20px;
  color: var(--text-3);
  font-size: 12px;
  line-height: 1.65;
}

.nav-note a {
  color: var(--text-2);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.view {
  margin-left: var(--sidebar-w);
  min-width: 0;
  min-height: calc(100vh - var(--header-h));
}

body.nav-collapsed .sidebar {
  display: none;
}

body.nav-collapsed .view {
  margin-left: 0;
}

.scrim {
  display: none;
}

@media (max-width: 1000px) {
  .sidebar {
    width: min(300px, 86vw);
    transform: translateX(-100%);
    transition: transform 0.2s var(--ease);
    box-shadow: 0 0 24px rgba(0, 0, 0, 0.18);
  }

  .sidebar.open {
    transform: none;
  }

  .view {
    margin-left: 0;
  }

  body.nav-collapsed .sidebar {
    display: block;
  }

  .scrim {
    display: block;
    position: fixed;
    inset: var(--header-h) 0 0;
    z-index: 35;
    background: rgba(0, 0, 0, 0.4);
  }

  .scrim[hidden] {
    display: none;
  }

  body.drawer-open {
    overflow: hidden;
  }
}

@media (max-width: 640px) {
  .app-bar {
    gap: 4px;
    padding: 0 8px;
  }

  .brand {
    margin-right: 4px;
    font-size: 17px;
  }

  .brand-tag {
    display: none;
  }

  .search {
    height: 38px;
  }

  .search input {
    padding: 0 12px;
    font-size: 14px;
  }

  .search-kbd {
    display: none;
  }

  .search-btn {
    width: 48px;
  }

  .app-actions .icon-btn {
    width: 36px;
  }
}