@layer base {
  :root {
    /* Catppuccin Latte (mauve accent) */
    --radius: 0.625rem;
    --background: 220 23.08% 94.9%;
    --foreground: 234 16.02% 35.49%;
    --card: 220 23.08% 94.9%;
    --card-foreground: 234 16.02% 35.49%;
    --popover: 220 23.08% 94.9%;
    --popover-foreground: 234 16.02% 35.49%;
    --primary: 266 85.05% 58.04%;
    --primary-foreground: 220 23.08% 94.9%;
    --secondary: 223 15.91% 82.75%;
    --secondary-foreground: 234 16.02% 35.49%;
    --muted: 223 15.91% 82.75%;
    --muted-foreground: 233 12.8% 41.37%;
    --huddle-drawer-surface: 0 0% 0%;
    --huddle-control-surface: 0 0% 20%;
    --huddle-control-hover-surface: 0 0% 24%;
    --huddle-control-chevron-surface: 0 0% 16%;
    --huddle-control-chevron-hover-surface: 0 0% 22%;
    --huddle-control-foreground: 0 0% 98%;
    --huddle-popover-surface: 0 0% 16%;
    --huddle-popover-border: 0 0% 24%;
    --huddle-tooltip-surface: 0 0% 20%;
    --huddle-tooltip-foreground: 0 0% 98%;
    --accent: 223 15.91% 82.75%;
    --accent-foreground: 234 16.02% 35.49%;
    --destructive: 347 86.67% 44.12%;
    --destructive-foreground: 220 23.08% 94.9%;
    --border: 225 13.56% 76.86%;
    --input: 225 13.56% 76.86%;
    --ring: 234 16.02% 35.49%;
    --chart-1: 345 57.65% 74.12%;
    --chart-2: 185 37.25% 70.59%;
    --chart-3: 219 81.96% 78.43%;
    --chart-4: 35 61.18% 76.86%;
    --chart-5: 113 32.94% 73.33%;
    --sidebar: 218 25.1% 93.73%;
    --sidebar-background: 218 25.1% 93.73%;
    --sidebar-foreground: 234 16.02% 35.49%;
    --sidebar-primary: 266 85.05% 58.04%;
    --sidebar-primary-foreground: 220 23.08% 94.9%;
    --sidebar-active: var(--sidebar-primary);
    --sidebar-active-foreground: var(--sidebar-primary-foreground);
    --sidebar-accent: 220 23.08% 94.9%;
    --sidebar-accent-foreground: 234 16.02% 35.49%;
    --sidebar-border: 225 13.56% 76.86%;
    --sidebar-ring: 225 13.56% 76.86%;
    /* Exact Buzz palette tokens; components consume these semantically. */
    --buzz-gradient-light-top: #e6e6b6;
    --buzz-gradient-light-bottom: #c4d0da;
    --buzz-gradient-dark-top: #4a4616;
    --buzz-gradient-dark-bottom: #0a1423;
    --buzz-content-dark: 0 0% 10.1960784314%;
    /* Hosted-community onboarding intentionally keeps this light palette in
       both app themes; semantic tokens keep component code color-agnostic. */
    --buzz-hosted-community-surface-fg: 23 23 23;
    --buzz-hosted-community-divider-border: 150 150 10;
    --buzz-hosted-community-action-bg: 240 240 205;
    --buzz-hosted-community-action-bg-hover: 232 232 188;
    --buzz-hosted-community-input-bg: 255 255 255;
    --buzz-hosted-community-modal-action-fg: 255 255 255;
    --buzz-hosted-community-modal-overlay-bg: 0 0 0;
    --buzz-hosted-community-identity-bg: 255 255 255;
  }

  .dark {
    /* Catppuccin Macchiato (mauve accent) */
    --radius: 0.625rem;
    --background: 232 23.4% 18.43%;
    --foreground: 227 68.25% 87.65%;
    --card: 232 23.4% 18.43%;
    --card-foreground: 227 68.25% 87.65%;
    --popover: 232 23.4% 18.43%;
    --popover-foreground: 227 68.25% 87.65%;
    --primary: 267 82.69% 79.61%;
    --primary-foreground: 232 23.4% 18.43%;
    --secondary: 230 18.8% 26.08%;
    --secondary-foreground: 227 68.25% 87.65%;
    --muted: 230 18.8% 26.08%;
    --muted-foreground: 228 39.22% 80%;
    --huddle-drawer-surface: 230 18.8% 26.08%;
    --huddle-control-surface: 231 15.61% 33.92%;
    --huddle-control-hover-surface: 231 15.61% 38%;
    --huddle-control-chevron-surface: 231 13.16% 29.8%;
    --huddle-control-chevron-hover-surface: 231 15.61% 33.92%;
    --huddle-control-foreground: 227 68.25% 87.65%;
    --huddle-popover-surface: 231 13.16% 29.8%;
    --huddle-popover-border: 231 15.61% 38%;
    --huddle-tooltip-surface: 231 15.61% 33.92%;
    --huddle-tooltip-foreground: 227 68.25% 87.65%;
    --accent: 230 18.8% 26.08%;
    --accent-foreground: 227 68.25% 87.65%;
    --destructive: 351 73.91% 72.94%;
    --destructive-foreground: 232 23.4% 18.43%;
    --border: 231 15.61% 33.92%;
    --input: 231 15.61% 33.92%;
    --ring: 227 68.25% 87.65%;
    --chart-1: 333 20.78% 38.04%;
    --chart-2: 193 19.61% 38.04%;
    --chart-3: 224 26.67% 41.18%;
    --chart-4: 30 8.24% 42.35%;
    --chart-5: 139 10.98% 38.82%;
    --sidebar: 234 22.75% 17.25%;
    --sidebar-background: 234 22.75% 17.25%;
    --sidebar-foreground: 227 68.25% 87.65%;
    --sidebar-primary: 267 82.69% 79.61%;
    --sidebar-primary-foreground: 232 23.4% 18.43%;
    --sidebar-active: var(--sidebar-primary);
    --sidebar-active-foreground: var(--sidebar-primary-foreground);
    --sidebar-accent: 232 23.4% 18.43%;
    --sidebar-accent-foreground: 227 68.25% 87.65%;
    --sidebar-border: 231 15.61% 33.92%;
    --sidebar-ring: 231 15.61% 33.92%;
  }

  * {
    @apply border-border;
  }

  html,
  body,
  #root {
    height: 100%;
    min-height: 100%;
    width: 100%;
  }

  /*
   * The app is a fixed-height shell — the document itself must never scroll
   * or rubber-band. `overscroll-behavior: none` stops scroll chaining from
   * inner containers reaching the viewport on both axes (the Magic Mouse
   * horizontal pan escaped through here), and `overflow: hidden` removes any
   * document-level scrollability. useWebviewScrollBoundaryLock handles the
   * wheel-event side; this is the CSS backstop.
   */
  html,
  body {
    overflow: hidden;
    overscroll-behavior: none;
  }

  mark {
    background-color: transparent;
    color: inherit;
  }

  html.dark {
    color-scheme: dark;
  }

  body {
    @apply bg-background text-foreground antialiased;
    font-family: "Inter Variable", Inter, "Avenir Next", "Segoe UI", sans-serif;
  }

  /*
   * Tailwind v4's preflight no longer sets `cursor: pointer` on buttons.
   * Restore it for clearly actionable elements so hover affordance is
   * consistent across the app. Disabled / aria-disabled elements keep
   * the default cursor; explicit `cursor-*` utility classes still win
   * because utilities are in a later layer than base.
   */
  button:not(:disabled),
  a[href],
  summary,
  [role="button"]:not([aria-disabled="true"]),
  [role="menuitem"]:not([aria-disabled="true"]),
  [role="menuitemcheckbox"]:not([aria-disabled="true"]),
  [role="menuitemradio"]:not([aria-disabled="true"]),
  [role="tab"]:not([aria-disabled="true"]),
  [role="link"] {
    cursor: pointer;
  }

  button:disabled,
  [aria-disabled="true"] {
    cursor: default;
  }
}

/*
 * Keep Buzz's established production selected tint available independently
 * from the optional prominent treatment.
 */
:root {
  --sidebar-row-subtle-active-surface: rgb(0 0 0 / 7%);
}

:root.dark {
  --sidebar-row-subtle-active-surface: rgb(255 255 255 / 16%);
}

/* The prominent treatment is exclusive to Buzz's painted gradient. */
:root[data-buzz-sidebar] {
  --sidebar-row-active-surface: rgb(255 255 255 / 82%);
}

:root[data-buzz-sidebar].dark {
  --sidebar-row-active-surface: rgb(255 255 255 / 18%);
}

/*
 * Buzz theme - sidebar gradient.
 *
 * Buzz reuses the GitHub Light palette for every base color; its one
 * distinguishing feature is this gradient painted across the sidebar/nav
 * canvas, replacing GitHub Light's flat grey. ThemeProvider toggles the
 * `data-buzz-sidebar` attribute on <html> when the Buzz theme is active.
 *
 * These rules are intentionally UNLAYERED: the `bg-sidebar` background-color
 * lives in Tailwind's `utilities` layer, and unlayered declarations win over
 * any layered ones, so this reliably overrides it without an `!important`.
 *
 * The gradient is painted once on the full app surface. Child chrome canvases
 * stay transparent so the sidebar, rail, top chrome, inset margin, and Settings
 * all reveal the same continuous ramp. Keeping one non-fixed background avoids
 * WKWebView's stale fixed-background raster when the app changes appearance
 * without a page reload. The portaled mobile sidebar is the sole separate
 * paint because it lives outside the app surface.
 *
 * Small transient `bg-sidebar` chips inside the shell that are NOT canvas
 * surfaces (the drag-overlay pills) opt out via `[data-buzz-flat]` - a
 * floating chip should retain its own fill rather than becoming transparent
 * over the full-app gradient.
 *
 * Shared row state colors are applied below so Buzz and flat themes use the
 * same hover/selection hierarchy.
 */
:root[data-buzz-sidebar] {
  --buzz-gradient-top: var(--buzz-gradient-light-top);
  --buzz-gradient-bottom: var(--buzz-gradient-light-bottom);
  --buzz-muted-foreground: rgb(0 0 0 / 40%);
  --buzz-search-surface: rgb(0 0 0 / 4%);
  --buzz-chrome-foreground: rgb(0 0 0 / 50%);
  --buzz-channel-fg: inherit;
  --buzz-dm-fg: inherit;
  --buzz-nav-fg: inherit;
  --buzz-hover-surface: rgb(0 0 0 / 4%);
  --buzz-sidebar-scrollbar-thumb: var(--buzz-hover-surface);
  --buzz-active-fill: 0 0% 0%;
  --buzz-active-foreground: var(--foreground);
}

/*
 * Dark variant (Buzz Dark). Reuses the GitHub Dark base palette; only the
 * Buzz color tokens change, so every downstream rule (gradient fill, hover,
 * search box, muted labels, active pill) adapts automatically. The `.dark`
 * class is set on the document root whenever a dark theme is active.
 */
:root[data-buzz-sidebar].dark {
  --buzz-gradient-top: var(--buzz-gradient-dark-top);
  --buzz-gradient-bottom: var(--buzz-gradient-dark-bottom);
  --buzz-muted-foreground: rgb(255 255 255 / 40%);
  --buzz-search-surface: rgb(255 255 255 / 4%);
  --buzz-chrome-foreground: rgb(255 255 255 / 50%);
  --buzz-hover-surface: rgb(255 255 255 / 4%);
  --buzz-active-fill: 0 0% 100%;
  --buzz-active-foreground: 0 0% 100%;
}

/*
 * Use the Buzz primary color for the floating selection-formatting tray.
 * Other themes retain the standard popover treatment.
 */
:root[data-buzz-sidebar] [data-buzz-selection-formatting-tray] {
  border-color: hsl(var(--primary-foreground) / 0.18);
  background-color: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

:root[data-buzz-sidebar] [data-buzz-selection-formatting-tray] button {
  color: hsl(var(--primary-foreground));
}

:root[data-buzz-sidebar] [data-buzz-selection-formatting-tray] button:hover,
:root[data-buzz-sidebar]
  [data-buzz-selection-formatting-tray]
  button[aria-pressed="true"] {
  background-color: hsl(var(--primary-foreground) / 0.16);
  color: hsl(var(--primary-foreground));
}

/* Keep the subtle content-card lift in Buzz Light only. */
:root[data-buzz-sidebar]:not(.dark)
  [data-buzz-content-surface]:not([data-buzz-content-unframed]) {
  box-shadow:
    -1px -1px 0 0 hsl(var(--sidebar-border) / 0.45),
    0 0 4px 0 rgb(0 0 0 / 7%);
}

/* Let the content card's shadow feather into the surrounding gradient. */
:root[data-buzz-sidebar]:not(.dark) [data-buzz-shadow-viewport] {
  overflow: visible;
}

/*
 * Buzz Dark uses a warmer neutral for the inset main/settings content canvas.
 * Override `--background` locally as well as the surface fill so descendant
 * headers and panes using `bg-background` remain visually continuous.
 */
:root[data-buzz-sidebar].dark [data-buzz-content-surface] {
  --background: var(--buzz-content-dark);
  background-color: hsl(var(--background));
}

:root[data-buzz-sidebar] .buzz-huddle-app-surface {
  background-color: transparent;
  background-image: none;
  isolation: isolate;
}

/* The Buzz theme uses a translucent color wash. Back it with an opaque copy
 * of the same gradient by default so its color remains stable over every app
 * surface, including a lifted huddle. */
:root[data-buzz-sidebar] .buzz-theme-gradient-underlay {
  background-image: linear-gradient(
    to bottom,
    var(--buzz-gradient-top),
    var(--buzz-gradient-bottom)
  );
  background-repeat: no-repeat;
  background-size: 100vw 100vh;
}

/*
 * Keep both Buzz gradients painted and switch only which layer is visible.
 * WKWebView can retain the old raster when `background-image` is replaced on
 * a translucent surface. The center content already follows `.dark`, so using
 * that same state for layer visibility keeps both surfaces in lockstep.
 */
:root[data-buzz-sidebar] .buzz-theme-gradient-layer-light {
  background-image: linear-gradient(
    to bottom,
    var(--buzz-gradient-light-top),
    var(--buzz-gradient-light-bottom)
  );
  background-size: 100vw 100vh;
  background-repeat: no-repeat;
}

:root[data-buzz-sidebar] .buzz-theme-gradient-layer-dark {
  background-image: linear-gradient(
    to bottom,
    var(--buzz-gradient-dark-top),
    var(--buzz-gradient-dark-bottom)
  );
  background-size: 100vw 100vh;
  background-repeat: no-repeat;
}

:root[data-buzz-sidebar]:not(.dark) .buzz-theme-gradient-layer-light,
:root[data-buzz-sidebar].dark .buzz-theme-gradient-layer-dark {
  opacity: 1;
}

/* The mobile sidebar is portaled outside the app surface. */
:root[data-buzz-sidebar]:not(.dark)
  [data-sidebar="sidebar"][data-mobile="true"].bg-sidebar {
  background-color: transparent;
  background-image: linear-gradient(
    to bottom,
    var(--buzz-gradient-light-top),
    var(--buzz-gradient-light-bottom)
  );
  background-size: 100vw 100vh;
  background-repeat: no-repeat;
}

:root[data-buzz-sidebar].dark
  [data-sidebar="sidebar"][data-mobile="true"].bg-sidebar {
  background-color: transparent;
  background-image: linear-gradient(
    to bottom,
    var(--buzz-gradient-dark-top),
    var(--buzz-gradient-dark-bottom)
  );
  background-size: 100vw 100vh;
  background-repeat: no-repeat;
}

/* All in-shell chrome reveals the single gradient painted above. */
:root[data-buzz-sidebar] .group\/sidebar-wrapper,
:root[data-buzz-sidebar] [data-testid="app-sidebar"],
:root[data-buzz-sidebar] [data-buzz-glass-inset],
:root[data-buzz-sidebar] [data-buzz-glass-footer-wrap],
:root[data-buzz-sidebar]
  .group\/sidebar-wrapper
  .bg-sidebar:not([data-buzz-flat]),
:root[data-buzz-sidebar] [data-testid="community-rail"].bg-sidebar,
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="sidebar-pinned-header"],
:root[data-buzz-sidebar] [data-testid="app-sidebar"] [data-sidebar="footer"] {
  background-color: transparent;
  background-image: none;
}

:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="sidebar-pinned-header"]::before,
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-sidebar="footer"]::before {
  background: none;
}

/*
 * Active nav item. The accent system (`applyAccentColor` in ThemeProvider)
 * sets `--sidebar-active` to the theme foreground as an INLINE style on
 * :root, which renders the selected page as a solid black pill under GitHub
 * Light. For the Buzz theme we want a subtle theme-specific tint instead.
 * Override the two active tokens on the sidebar element itself; element-local
 * custom properties win over the inherited inline values from :root. Text
 * uses the theme foreground, and the derived
 * `bg-sidebar-active-foreground/20` badge follows automatically.
 *
 * SCOPED to the app sidebar container, NOT :root - the `bg-sidebar-active` /
 * `text-sidebar-active-foreground` tokens are also consumed by non-sidebar
 * controls (avatar edit buttons in ProfileSettingsCard / AgentCreationPreview,
 * the selected persona row in PersonaCatalogDialog). A root-level override
 * turned those white (white-on-white under Buzz Dark); scoping keeps them on
 * the normal accent-driven active colors.
 */
:root[data-buzz-sidebar] [data-testid="app-sidebar"],
:root[data-buzz-sidebar] [data-testid="settings-sidebar"] {
  --sidebar-active: var(--buzz-active-fill);
  --sidebar-active-foreground: var(--buzz-active-foreground);
}

/*
 * Dark variant: keep the active-pill foreground white on the dark gradient.
 * (The pill itself is repainted to a translucent tint by the rule below.)
 */
:root[data-buzz-sidebar].dark [data-testid="app-sidebar"],
:root[data-buzz-sidebar].dark [data-testid="settings-sidebar"] {
  --sidebar-active: var(--buzz-active-fill);
  --sidebar-active-foreground: var(--buzz-active-foreground);
}

/*
 * By default, selected navigation uses a darker version of the hover tint,
 * matching Buzz's established production treatment. The optional prominent
 * preference repaints that same row with the higher-contrast tab surface.
 */
:root[data-buzz-sidebar] [data-testid="app-sidebar"] [data-active="true"],
:root[data-buzz-sidebar] [data-testid="settings-sidebar"] [data-active="true"] {
  background-color: var(--sidebar-row-subtle-active-surface);
  box-shadow: none;
}

:root[data-buzz-sidebar][data-prominent-active-tab]
  [data-testid="app-sidebar"]
  [data-active="true"],
:root[data-buzz-sidebar][data-prominent-active-tab]
  [data-testid="settings-sidebar"]
  [data-active="true"] {
  --sidebar-active-foreground: var(--sidebar-foreground);
  background-color: var(--sidebar-row-active-surface);
  box-shadow: none;
}

/*
 * Hover on non-active Buzz nav items uses the established 4% theme-specific
 * tint. Active items are excluded so they retain the selected surface. Covers
 * both top-level menu buttons and channel sub-buttons in app and Settings nav.
 */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-sidebar="menu-button"]:not([data-active="true"]):hover,
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-sidebar="menu-sub-button"]:not([data-active="true"]):hover,
:root[data-buzz-sidebar]
  [data-testid="settings-sidebar"]
  [data-sidebar="menu-button"]:not([data-active="true"]):hover,
:root[data-buzz-sidebar]
  [data-testid="settings-sidebar"]
  [data-sidebar="menu-sub-button"]:not([data-active="true"]):hover {
  background-color: var(--buzz-hover-surface);
}

/*
 * Row actions such as the DM close button are siblings of the menu button.
 * Hovering them still activates the row's Tailwind `group-hover` treatment,
 * so cover the whole menu item to keep that sibling-hover path on the same
 * neutral surface instead of falling back to the legacy accent.
 */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  :where([data-sidebar="menu-item"]:hover)
  > [data-sidebar="menu-button"]:not([data-active="true"]) {
  background-color: var(--buzz-hover-surface);
}

/*
 * Navigation clicks stay spatially still. The subtle compression begins only
 * after the sidebar's drag sensor crosses its reorder threshold and is removed
 * entirely when the user prefers reduced motion.
 */
@media (prefers-reduced-motion: no-preference) {
  :where([data-sidebar-drag-state="dragging"], [data-sidebar-drag-overlay]) {
    transform: scale(0.985);
  }
}

/*
 * Search box: use a neutral 7% tint instead of the grey
 * `bg-sidebar-border/35` fill. Its label, shortcut, and magnifying glass share
 * the 40% muted foreground at rest and on hover/focus.
 */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="open-search"],
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="open-search"]:hover,
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="open-search"]:focus-visible {
  background-color: var(--buzz-search-surface);
  color: var(--buzz-muted-foreground);
}

:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="open-search"]
  > * {
  color: var(--buzz-muted-foreground);
}

/* Match the hover treatment used by inactive channel rows. */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="sidebar-profile-card"]:hover {
  background-color: var(--buzz-hover-surface);
}

/*
 * App and settings sidebar section headings plus secondary footer text use the
 * same tint. Navigation rows keep their normal foreground in both sidebars.
 */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-sidebar="group-label"],
:root[data-buzz-sidebar]
  [data-testid="settings-sidebar"]
  [data-sidebar="group-label"],
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-buzz-sidebar-secondary],
:root[data-buzz-sidebar]
  [data-testid="settings-sidebar"]
  [data-buzz-sidebar-secondary] {
  color: var(--buzz-muted-foreground);
}

/* Sidebar toggle plus back/forward navigation controls in the top chrome. */
:root[data-buzz-sidebar]
  [data-testid="app-top-chrome"]
  :is(
    [data-sidebar="trigger"],
    [data-testid="global-back"],
    [data-testid="global-forward"]
  ) {
  color: var(--buzz-chrome-foreground);
}

/*
 * Section action buttons (the "+" and "..." at the right edge of each sidebar
 * section header): match the same translucent white fill (see
 * `--buzz-hover-surface`) on hover/focus instead of the grey
 * `bg-sidebar-border/35` fill. Unlayered + `[data-buzz-sidebar]` prefix beats
 * the Tailwind utility so it only applies under the Buzz theme.
 */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  .sidebar-section-action:hover,
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  .sidebar-section-action:focus-visible {
  background-color: var(--buzz-hover-surface);
}

/*
 * Per-row-type text colors (Buzz theme).
 *
 * By default the whole sidebar inherits a single `--sidebar-foreground`, so
 * channels, direct messages, and the Inbox/Agents nav rows all share one text
 * color. These variables let each row type carry its own foreground while
 * keeping the default value unchanged.
 *
 * Each var defaults to `inherit`, so with nothing set the sidebar looks
 * exactly as before. Scoped to the Buzz sidebar container so other themes are
 * untouched.
 */
/* Channels: rows live inside the `stream-list` / `starred-list` menus. */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="stream-list"]
  [data-sidebar="menu-button"]:not([data-active="true"]),
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="stream-list"]
  [data-sidebar="menu-sub-button"]:not([data-active="true"]),
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="starred-list"]
  [data-sidebar="menu-button"]:not([data-active="true"]),
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="starred-list"]
  [data-sidebar="menu-sub-button"]:not([data-active="true"]) {
  color: var(--buzz-channel-fg);
}

/* Direct messages: rows live inside the `dm-list` menu. */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="dm-list"]
  [data-sidebar="menu-button"]:not([data-active="true"]),
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="dm-list"]
  [data-sidebar="menu-sub-button"]:not([data-active="true"]) {
  color: var(--buzz-dm-fg);
}

/*
 * Inbox + Agents nav rows: the primary app nav buttons (Inbox, Pulse,
 * Projects, Agents, Workflows). Excludes the active row so the active-pill
 * foreground still wins.
 */
:root[data-buzz-sidebar]
  [data-testid="app-sidebar"]
  [data-testid="sidebar-primary-menu"]
  [data-sidebar="menu-button"]:not([data-active="true"]) {
  color: var(--buzz-nav-fg);
}

/* Follow Buzz's selected appearance, independent of the OS color scheme. */
.dark .sidebar-muted-content {
  opacity: 0.45;
}

/*
 * Glass background.
 *
 * ThemeProvider installs native macOS vibrancy before toggling
 * `data-glass-background`. Keep the frosted layer on the outer canvases only;
 * nested sidebar/header/footer surfaces pass through so the navigation reads
 * as one continuous pane while the center content surface remains opaque.
 */
:root[data-glass-background] {
  --glass-sidebar-surface: hsl(
    var(--sidebar-background) /
    var(--glass-background-opacity, 65%)
  );
  --buzz-translucency-gradient-alpha: var(--glass-background-opacity, 65%);
  --buzz-translucency-wash-alpha: 2.4%;
}

/* The regular Buzz theme keeps an opaque copy of the gradient beneath its
 * color layers. Remove that backing while glass is enabled so the translucent
 * wash can reveal the native macOS vibrancy view. */
:root[data-glass-background] .buzz-theme-gradient-underlay {
  background: transparent;
}

/* Non-Buzz themes use their existing sidebar color as the glass tint. */
:root[data-glass-background]:not([data-buzz-sidebar])
  .buzz-theme-gradient-layer {
  background-color: var(--glass-sidebar-surface);
}

:root[data-glass-background] .buzz-theme-gradient-layer-light {
  /* Buzz color wash above a neutral frost wash. */
  background-image:
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        var(--buzz-gradient-light-top)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      ),
      color-mix(
        in srgb,
        var(--buzz-gradient-light-bottom)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      )
    ),
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        #ffffff var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      ),
      color-mix(
        in srgb,
        #ffffff var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      )
    );
  background-size:
    100vw 100vh,
    100vw 100vh;
  background-repeat: no-repeat, no-repeat;
}

:root[data-glass-background] .buzz-theme-gradient-layer-dark {
  background-image:
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        var(--buzz-gradient-dark-top)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      ),
      color-mix(
        in srgb,
        var(--buzz-gradient-dark-bottom)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      )
    ),
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        #12161d var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      ),
      color-mix(
        in srgb,
        #12161d var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      )
    );
  background-size:
    100vw 100vh,
    100vw 100vh;
  background-repeat: no-repeat, no-repeat;
}

:root[data-glass-background][data-buzz-sidebar]:not(.dark)
  [data-sidebar="sidebar"][data-mobile="true"].bg-sidebar {
  background-color: transparent;
  background-image:
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        var(--buzz-gradient-light-top)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      ),
      color-mix(
        in srgb,
        var(--buzz-gradient-light-bottom)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      )
    ),
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        #ffffff var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      ),
      color-mix(
        in srgb,
        #ffffff var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      )
    );
  background-size:
    100vw 100vh,
    100vw 100vh;
  background-repeat: no-repeat, no-repeat;
}

:root[data-glass-background][data-buzz-sidebar].dark
  [data-sidebar="sidebar"][data-mobile="true"].bg-sidebar {
  background-color: transparent;
  background-image:
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        var(--buzz-gradient-dark-top)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      ),
      color-mix(
        in srgb,
        var(--buzz-gradient-dark-bottom)
          var(--buzz-translucency-gradient-alpha, 70%),
        transparent
      )
    ),
    linear-gradient(
      to bottom,
      color-mix(
        in srgb,
        #12161d var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      ),
      color-mix(
        in srgb,
        #12161d var(--buzz-translucency-wash-alpha, 2.4%),
        transparent
      )
    );
  background-size:
    100vw 100vh,
    100vw 100vh;
  background-repeat: no-repeat, no-repeat;
}

:root[data-glass-background]:not([data-buzz-sidebar])
  [data-sidebar="sidebar"][data-mobile="true"].bg-sidebar {
  background-color: var(--glass-sidebar-surface);
  background-image: none;
}

:root[data-glass-background] .group\/sidebar-wrapper,
:root[data-glass-background] [data-testid="app-sidebar"],
:root[data-glass-background] [data-testid="settings-sidebar"],
:root[data-glass-background] [data-buzz-glass-inset],
:root[data-glass-background] [data-buzz-glass-footer-wrap],
:root[data-glass-background]
  .group\/sidebar-wrapper
  .bg-sidebar:not([data-buzz-flat]),
:root[data-glass-background]
  [data-testid="app-sidebar"]
  [data-testid="sidebar-pinned-header"],
:root[data-glass-background]
  [data-testid="app-sidebar"]
  [data-sidebar="footer"] {
  background-color: transparent;
  background-image: none;
}

:root[data-glass-background]
  [data-testid="settings-sidebar"]
  [data-sidebar="sidebar"] {
  background-color: transparent;
  background-image: none;
}

/* Remove edge fades and stacking contexts that made header/footer look separate. */
:root[data-glass-background]
  [data-testid="app-sidebar"]
  [data-testid="sidebar-pinned-header"],
:root[data-glass-background] [data-buzz-glass-inset],
:root[data-glass-background]
  [data-testid="app-sidebar"]
  [data-buzz-glass-footer-wrap],
:root[data-glass-background]
  [data-testid="app-sidebar"]
  [data-sidebar="footer"] {
  isolation: auto;
  z-index: auto;
}

:root[data-glass-background]
  [data-testid="app-sidebar"]
  [data-testid="sidebar-pinned-header"]::before,
:root[data-glass-background]
  [data-testid="app-sidebar"]
  [data-sidebar="footer"]::before {
  background: none;
}

/* Let the native transparent window show through behind the sidebar glass. */
:root[data-glass-background],
:root[data-glass-background] body,
:root[data-glass-background] #root {
  /* WebKit otherwise paints an opaque page canvas above native vibrancy. */
  background: transparent;
}

/* The outer shell stays clear; the app surface owns the translucent tint. */
:root[data-glass-background] .buzz-huddle-shell {
  background: transparent;
}

:root[data-glass-background] .buzz-huddle-app-surface {
  background-color: transparent;
  background-image: none;
  isolation: isolate;
}

:root[data-glass-background] .buzz-huddle-app-surface::after {
  background: transparent;
}

:root[data-glass-background]
  .buzz-huddle-shell[data-huddle-window="true"]
  .buzz-huddle-app-surface-open::after {
  background: hsl(var(--buzz-huddle-drawer-surface));
}

/* Keep the Buzz gradient in the lifted app surface. The shell beneath it is
 * strictly the huddle drawer, so its dark surface is revealed at the rounded
 * lower corners instead of the theme gradient bleeding through there. */
:root[data-buzz-sidebar] .buzz-huddle-shell[data-huddle-open="true"] {
  background-color: hsl(var(--buzz-huddle-drawer-surface));
  background-image: none;
}

:root[data-buzz-sidebar][data-glass-background]
  .buzz-huddle-shell[data-huddle-window="false"][data-huddle-open="true"] {
  background-color: transparent;
  background-image: none;
}

/* Keep an explicit black base at z-0 while the lifted app surface (and its
 * two gradient layers) sits above it. This prevents the default gradient
 * backing from ever replacing the huddle drawer at the exposed corners. */
:root[data-buzz-sidebar] .buzz-huddle-shell[data-huddle-open="true"]::before {
  background: hsl(var(--buzz-huddle-drawer-surface));
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 0;
}

/* In the main glass window, let vibrancy continue around the Huddle controls
 * and present the tray as an inset four-corner surface. The dedicated Huddle
 * window keeps the full-width dark control dock above. */
:root[data-glass-background]
  .buzz-huddle-shell[data-huddle-window="false"]
  .buzz-huddle-drawer-backdrop {
  background: transparent;
}

:root[data-buzz-sidebar][data-glass-background]
  .buzz-huddle-shell[data-huddle-window="false"][data-huddle-open="true"]::before {
  content: none;
}

:root[data-glass-background]
  .buzz-huddle-shell[data-huddle-window="false"]
  .buzz-huddle-drawer-slot {
  padding: var(--buzz-huddle-drawer-inset);
}

:root[data-glass-background]
  .buzz-huddle-shell[data-huddle-window="false"]
  .buzz-huddle-drawer-slot
  > .buzz-huddle-drawer {
  border-radius: calc(
    var(--buzz-huddle-drawer-radius) -
    var(--buzz-huddle-drawer-inset)
  );
  height: 100%;
  padding-block: var(--buzz-huddle-drawer-inset);
  padding-inline: var(--buzz-huddle-drawer-inset);
}