/* =========================================================================
   maestro web — design system
   Register: product (a tool; design serves the task).
   Identity: precise, calm, alive. Monospace-as-UI; graphite chrome where the
   activity colours (green = alive) are the only hue on screen.
   Theme: dark (default) + light, all via OKLCH custom-property tokens.
   Palette: `data-palette` on <html> swaps the accent + base tint (see the
   "palettes" section at the end of the token area); graphite is the bare
   document.
   ========================================================================= */

:root {
  /* ---- type ---- */
  --font-mono:
    "JetBrains Mono", ui-monospace, "SF Mono", "SFMono-Regular", "Cascadia Code",
    "Roboto Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --font-sans:
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;

  --fs-11: 0.6875rem;
  --fs-12: 0.75rem;
  --fs-13: 0.8125rem;
  --fs-14: 0.875rem;
  --fs-15: 0.9375rem;
  --fs-17: 1.0625rem;
  --fs-20: 1.25rem;

  /* ---- spacing ---- */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;

  /* ---- radii ----
     Terminal-native: crisp, near-square corners. Round dots (status, brand)
     use border-radius:50% directly and are unaffected; these tokens govern
     rectangles (buttons, inputs, cards, tags) and stay sharp on purpose. */
  --r-1: 2px;
  --r-2: 3px;
  --r-3: 4px;
  --r-pill: 3px;

  /* ---- sizing ---- */
  --row-h: 46px;
  --control-h: 30px;
  --tap: 40px;
  /* Height of the two top-of-pane bars (sidebar search + attach header) — shared
     so they line up across the split. */
  --bar-h: 34px;

  /* ---- motion ---- */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 120ms;
  --dur: 180ms;
  --dur-slow: 240ms;

  /* ---- z-index scale ---- */
  --z-sticky: 10;
  --z-backdrop: 40;
  --z-modal: 50;
  --z-toast: 60;

  /* ---- color: dark (default) ---- */
  color-scheme: dark;

  --bg: oklch(0.172 0.006 256);
  --bg-grid: oklch(0.21 0.007 256);
  --surface: oklch(0.208 0.007 256);
  --surface-2: oklch(0.246 0.008 256);
  --surface-3: oklch(0.286 0.009 256);
  --border: oklch(0.312 0.01 256);
  --border-strong: oklch(0.395 0.012 256);

  --ink: oklch(0.945 0.004 256);
  --muted: oklch(0.72 0.008 256);
  --faint: oklch(0.58 0.008 256);

  /* graphite: the accent is ink itself — primary action, focus, selection.
     The activity colours below stay the only hue on screen. */
  --accent: oklch(0.92 0.005 256);
  --accent-strong: oklch(0.97 0.003 256);
  --accent-ink: oklch(0.2 0.012 256);
  --accent-tint: oklch(0.92 0.005 256 / 0.1);
  --accent-ring: oklch(0.92 0.005 256 / 0.5);

  /* preview (docs/PREVIEW.md): a provisional view needs a colour that is not
     the accent, because the accent is what says "this is the one you picked".
     Defined once, off a single hue variable, so a palette whose accent already
     sits on that hue can move it (see periwinkle/orchid below); `light-dark()`
     keeps the light pair here instead of in all eighteen theme blocks. */
  --preview-h: 305;
  --preview: light-dark(
    oklch(0.55 0.16 var(--preview-h)),
    oklch(0.78 0.14 var(--preview-h))
  );
  --preview-ink: light-dark(
    oklch(0.99 0.005 var(--preview-h)),
    oklch(0.19 0.045 var(--preview-h))
  );
  /* Opaque, not a wash: session rows read as fills, and a fill has to land on
     the same colour whatever tier the row was already painted. `--accent-fill`
     is the same recipe on the accent, so the two tiers differ by hue alone. */
  --preview-tint: color-mix(in oklab, var(--preview) 30%, var(--surface-2));
  --accent-fill: color-mix(in oklab, var(--accent) 30%, var(--surface-2));
  --preview-ring: light-dark(
    oklch(0.55 0.16 var(--preview-h) / 0.5),
    oklch(0.78 0.14 var(--preview-h) / 0.6)
  );

  --live: oklch(0.84 0.17 152);
  --live-glow: oklch(0.84 0.17 152 / 0.55);

  --danger: oklch(0.72 0.18 25);
  --danger-tint: oklch(0.72 0.18 25 / 0.14);
  --warn: oklch(0.82 0.14 85);

  --shadow-1: 0 1px 2px oklch(0 0 0 / 0.4);
  --shadow-2:
    0 12px 28px -8px oklch(0 0 0 / 0.6), 0 2px 8px oklch(0 0 0 / 0.4);
  --term-bg: oklch(0.155 0.006 256);
}

:root[data-theme="light"],
:root[data-theme="light"] body {
  color-scheme: light;

  --bg: oklch(0.985 0.002 256);
  --bg-grid: oklch(0.93 0.004 256);
  --surface: oklch(1 0 0);
  --surface-2: oklch(0.965 0.003 256);
  --surface-3: oklch(0.93 0.004 256);
  --border: oklch(0.892 0.005 256);
  --border-strong: oklch(0.82 0.008 256);

  --ink: oklch(0.26 0.012 256);
  --muted: oklch(0.47 0.012 256);
  --faint: oklch(0.62 0.012 256);

  --accent: oklch(0.27 0.01 256);
  --accent-strong: oklch(0.2 0.01 256);
  --accent-ink: oklch(0.985 0.002 256);
  --accent-tint: oklch(0.27 0.01 256 / 0.1);
  --accent-ring: oklch(0.27 0.01 256 / 0.45);

  --live: oklch(0.6 0.16 151);
  --live-glow: oklch(0.6 0.16 151 / 0.45);

  --danger: oklch(0.55 0.21 27);
  --danger-tint: oklch(0.55 0.21 27 / 0.1);
  --warn: oklch(0.66 0.15 75);

  --shadow-1: 0 1px 2px oklch(0.5 0.02 256 / 0.12);
  --shadow-2:
    0 16px 36px -12px oklch(0.4 0.03 256 / 0.28),
    0 2px 8px oklch(0.5 0.02 256 / 0.1);
  --term-bg: oklch(0.165 0.012 256);
}

/* Follow the OS when the user hasn't pinned a theme. */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;

    --bg: oklch(0.985 0.002 256);
    --bg-grid: oklch(0.93 0.004 256);
    --surface: oklch(1 0 0);
    --surface-2: oklch(0.965 0.003 256);
    --surface-3: oklch(0.93 0.004 256);
    --border: oklch(0.892 0.005 256);
    --border-strong: oklch(0.82 0.008 256);

    --ink: oklch(0.26 0.012 256);
    --muted: oklch(0.47 0.012 256);
    --faint: oklch(0.62 0.012 256);

    --accent: oklch(0.27 0.01 256);
    --accent-strong: oklch(0.2 0.01 256);
    --accent-ink: oklch(0.985 0.002 256);
    --accent-tint: oklch(0.27 0.01 256 / 0.1);
    --accent-ring: oklch(0.27 0.01 256 / 0.45);

    --live: oklch(0.6 0.16 151);
    --live-glow: oklch(0.6 0.16 151 / 0.45);

    --danger: oklch(0.55 0.21 27);
    --danger-tint: oklch(0.55 0.21 27 / 0.1);
    --warn: oklch(0.66 0.15 75);

    --shadow-1: 0 1px 2px oklch(0.5 0.02 256 / 0.12);
    --shadow-2:
      0 16px 36px -12px oklch(0.4 0.03 256 / 0.28),
      0 2px 8px oklch(0.5 0.02 256 / 0.1);
    --term-bg: oklch(0.165 0.012 256);
  }
}

/* ---- palettes ----
   `data-palette` on <html> recolours the accent + base tint on top of the
   light/dark machinery above. Graphite (the default) is the bare document.
   Each palette ships a dark block, a pinned-light block, and a system-light
   block; `--live`/`--danger`/`--warn` stay semantic and are not redefined
   (except amber-phosphor, whose accent would collide with the stock warn). */

/* ice-cyan: signal-cyan accent on the slate base. */
:root[data-palette="ice-cyan"] {
  --bg: oklch(0.178 0.012 256);
  --bg-grid: oklch(0.215 0.014 256);
  --surface: oklch(0.214 0.014 256);
  --surface-2: oklch(0.252 0.016 256);
  --surface-3: oklch(0.292 0.018 256);
  --border: oklch(0.318 0.018 256);
  --border-strong: oklch(0.4 0.022 256);
  --ink: oklch(0.945 0.006 256);
  --muted: oklch(0.722 0.014 256);
  --faint: oklch(0.58 0.014 256);
  --accent: oklch(0.85 0.115 205);
  --accent-strong: oklch(0.89 0.12 205);
  --accent-ink: oklch(0.24 0.03 230);
  --accent-tint: oklch(0.85 0.115 205 / 0.12);
  --accent-ring: oklch(0.85 0.115 205 / 0.55);
  --term-bg: oklch(0.158 0.012 256);
}
:root[data-palette="ice-cyan"][data-theme="light"],
:root[data-palette="ice-cyan"][data-theme="light"] body {
  --bg: oklch(0.985 0.003 256);
  --bg-grid: oklch(0.93 0.006 256);
  --surface: oklch(1 0 0);
  --surface-2: oklch(0.965 0.004 256);
  --surface-3: oklch(0.93 0.006 256);
  --border: oklch(0.892 0.008 256);
  --border-strong: oklch(0.82 0.012 256);
  --ink: oklch(0.26 0.014 256);
  --muted: oklch(0.47 0.016 256);
  --faint: oklch(0.62 0.016 256);
  --accent: oklch(0.52 0.1 220);
  --accent-strong: oklch(0.47 0.11 220);
  --accent-ink: oklch(0.99 0.005 220);
  --accent-tint: oklch(0.52 0.1 220 / 0.12);
  --accent-ring: oklch(0.52 0.1 220 / 0.5);
  --term-bg: oklch(0.165 0.012 256);
}
@media (prefers-color-scheme: light) {
  :root[data-palette="ice-cyan"]:not([data-theme]) {
    --bg: oklch(0.985 0.003 256);
    --bg-grid: oklch(0.93 0.006 256);
    --surface: oklch(1 0 0);
    --surface-2: oklch(0.965 0.004 256);
    --surface-3: oklch(0.93 0.006 256);
    --border: oklch(0.892 0.008 256);
    --border-strong: oklch(0.82 0.012 256);
    --ink: oklch(0.26 0.014 256);
    --muted: oklch(0.47 0.016 256);
    --faint: oklch(0.62 0.016 256);
    --accent: oklch(0.52 0.1 220);
    --accent-strong: oklch(0.47 0.11 220);
    --accent-ink: oklch(0.99 0.005 220);
    --accent-tint: oklch(0.52 0.1 220 / 0.12);
    --accent-ring: oklch(0.52 0.1 220 / 0.5);
    --term-bg: oklch(0.165 0.012 256);
  }
}
/* periwinkle: indigo base, blue-violet accent. */
:root[data-palette="periwinkle"] {
  --bg: oklch(0.175 0.018 278);
  --bg-grid: oklch(0.212 0.021 278);
  --surface: oklch(0.212 0.021 278);
  --surface-2: oklch(0.25 0.024 278);
  --surface-3: oklch(0.29 0.026 278);
  --border: oklch(0.318 0.026 278);
  --border-strong: oklch(0.4 0.028 278);
  --ink: oklch(0.93 0.012 278);
  --muted: oklch(0.71 0.02 278);
  --faint: oklch(0.57 0.022 278);
  --accent: oklch(0.75 0.125 275);
  --accent-strong: oklch(0.79 0.13 275);
  --accent-ink: oklch(0.18 0.04 278);
  --accent-tint: oklch(0.75 0.125 275 / 0.14);
  --accent-ring: oklch(0.75 0.125 275 / 0.55);
  /* This accent is already violet, so preview moves to cyan to stay legible
     as "not the accent". Set once here: the light blocks below don't touch it. */
  --preview-h: 195;
  --term-bg: oklch(0.155 0.018 278);
}
:root[data-palette="periwinkle"][data-theme="light"],
:root[data-palette="periwinkle"][data-theme="light"] body {
  --bg: oklch(0.982 0.004 278);
  --bg-grid: oklch(0.93 0.008 278);
  --surface: oklch(1 0 0);
  --surface-2: oklch(0.96 0.006 278);
  --surface-3: oklch(0.93 0.008 278);
  --border: oklch(0.885 0.01 278);
  --border-strong: oklch(0.82 0.014 278);
  --ink: oklch(0.27 0.02 278);
  --muted: oklch(0.47 0.02 278);
  --faint: oklch(0.62 0.02 278);
  --accent: oklch(0.5 0.17 272);
  --accent-strong: oklch(0.45 0.17 272);
  --accent-ink: oklch(0.99 0.005 272);
  --accent-tint: oklch(0.5 0.17 272 / 0.12);
  --accent-ring: oklch(0.5 0.17 272 / 0.5);
  --term-bg: oklch(0.165 0.018 278);
}
@media (prefers-color-scheme: light) {
  :root[data-palette="periwinkle"]:not([data-theme]) {
    --bg: oklch(0.982 0.004 278);
    --bg-grid: oklch(0.93 0.008 278);
    --surface: oklch(1 0 0);
    --surface-2: oklch(0.96 0.006 278);
    --surface-3: oklch(0.93 0.008 278);
    --border: oklch(0.885 0.01 278);
    --border-strong: oklch(0.82 0.014 278);
    --ink: oklch(0.27 0.02 278);
    --muted: oklch(0.47 0.02 278);
    --faint: oklch(0.62 0.02 278);
    --accent: oklch(0.5 0.17 272);
    --accent-strong: oklch(0.45 0.17 272);
    --accent-ink: oklch(0.99 0.005 272);
    --accent-tint: oklch(0.5 0.17 272 / 0.12);
    --accent-ring: oklch(0.5 0.17 272 / 0.5);
    --term-bg: oklch(0.165 0.018 278);
  }
}

/* amber-phosphor: CRT amber on warm graphite. `--warn` shifts orange so the
   awaiting colour stays distinct from the accent. */
:root[data-palette="amber-phosphor"] {
  --bg: oklch(0.178 0.008 70);
  --bg-grid: oklch(0.214 0.01 70);
  --surface: oklch(0.214 0.01 70);
  --surface-2: oklch(0.252 0.012 70);
  --surface-3: oklch(0.292 0.013 70);
  --border: oklch(0.318 0.014 70);
  --border-strong: oklch(0.4 0.016 70);
  --ink: oklch(0.94 0.008 78);
  --muted: oklch(0.72 0.014 75);
  --faint: oklch(0.58 0.014 75);
  --accent: oklch(0.83 0.14 78);
  --accent-strong: oklch(0.87 0.145 78);
  --accent-ink: oklch(0.25 0.05 78);
  --accent-tint: oklch(0.83 0.14 78 / 0.13);
  --accent-ring: oklch(0.83 0.14 78 / 0.55);
  --warn: oklch(0.76 0.15 55);
  --term-bg: oklch(0.158 0.008 70);
}
:root[data-palette="amber-phosphor"][data-theme="light"],
:root[data-palette="amber-phosphor"][data-theme="light"] body {
  --bg: oklch(0.983 0.004 78);
  --bg-grid: oklch(0.93 0.007 78);
  --surface: oklch(1 0 0);
  --surface-2: oklch(0.962 0.005 78);
  --surface-3: oklch(0.93 0.007 78);
  --border: oklch(0.888 0.01 78);
  --border-strong: oklch(0.82 0.012 78);
  --ink: oklch(0.27 0.015 70);
  --muted: oklch(0.47 0.016 70);
  --faint: oklch(0.62 0.016 70);
  --accent: oklch(0.6 0.13 70);
  --accent-strong: oklch(0.55 0.13 70);
  --accent-ink: oklch(0.99 0.01 78);
  --accent-tint: oklch(0.6 0.13 70 / 0.12);
  --accent-ring: oklch(0.6 0.13 70 / 0.5);
  --warn: oklch(0.58 0.14 50);
  --term-bg: oklch(0.165 0.008 70);
}
@media (prefers-color-scheme: light) {
  :root[data-palette="amber-phosphor"]:not([data-theme]) {
    --bg: oklch(0.983 0.004 78);
    --bg-grid: oklch(0.93 0.007 78);
    --surface: oklch(1 0 0);
    --surface-2: oklch(0.962 0.005 78);
    --surface-3: oklch(0.93 0.007 78);
    --border: oklch(0.888 0.01 78);
    --border-strong: oklch(0.82 0.012 78);
    --ink: oklch(0.27 0.015 70);
    --muted: oklch(0.47 0.016 70);
    --faint: oklch(0.62 0.016 70);
    --accent: oklch(0.6 0.13 70);
    --accent-strong: oklch(0.55 0.13 70);
    --accent-ink: oklch(0.99 0.01 78);
    --accent-tint: oklch(0.6 0.13 70 / 0.12);
    --accent-ring: oklch(0.6 0.13 70 / 0.5);
    --warn: oklch(0.58 0.14 50);
    --term-bg: oklch(0.165 0.008 70);
  }
}

/* ember: warm orange-red accent. */
:root[data-palette="ember"] {
  --bg: oklch(0.18 0.009 50);
  --bg-grid: oklch(0.216 0.011 50);
  --surface: oklch(0.216 0.011 50);
  --surface-2: oklch(0.254 0.013 50);
  --surface-3: oklch(0.294 0.014 50);
  --border: oklch(0.32 0.015 50);
  --border-strong: oklch(0.4 0.017 50);
  --ink: oklch(0.94 0.007 50);
  --muted: oklch(0.72 0.013 50);
  --faint: oklch(0.58 0.013 50);
  --accent: oklch(0.74 0.15 45);
  --accent-strong: oklch(0.78 0.155 45);
  --accent-ink: oklch(0.2 0.04 45);
  --accent-tint: oklch(0.74 0.15 45 / 0.14);
  --accent-ring: oklch(0.74 0.15 45 / 0.55);
  --term-bg: oklch(0.158 0.009 50);
}
:root[data-palette="ember"][data-theme="light"],
:root[data-palette="ember"][data-theme="light"] body {
  --bg: oklch(0.983 0.004 50);
  --bg-grid: oklch(0.93 0.006 50);
  --surface: oklch(1 0 0);
  --surface-2: oklch(0.962 0.005 50);
  --surface-3: oklch(0.93 0.006 50);
  --border: oklch(0.888 0.009 50);
  --border-strong: oklch(0.82 0.012 50);
  --ink: oklch(0.27 0.014 50);
  --muted: oklch(0.47 0.015 50);
  --faint: oklch(0.62 0.015 50);
  --accent: oklch(0.58 0.17 40);
  --accent-strong: oklch(0.53 0.17 40);
  --accent-ink: oklch(0.99 0.008 40);
  --accent-tint: oklch(0.58 0.17 40 / 0.11);
  --accent-ring: oklch(0.58 0.17 40 / 0.5);
  --term-bg: oklch(0.165 0.009 50);
}
@media (prefers-color-scheme: light) {
  :root[data-palette="ember"]:not([data-theme]) {
    --bg: oklch(0.983 0.004 50);
    --bg-grid: oklch(0.93 0.006 50);
    --surface: oklch(1 0 0);
    --surface-2: oklch(0.962 0.005 50);
    --surface-3: oklch(0.93 0.006 50);
    --border: oklch(0.888 0.009 50);
    --border-strong: oklch(0.82 0.012 50);
    --ink: oklch(0.27 0.014 50);
    --muted: oklch(0.47 0.015 50);
    --faint: oklch(0.62 0.015 50);
    --accent: oklch(0.58 0.17 40);
    --accent-strong: oklch(0.53 0.17 40);
    --accent-ink: oklch(0.99 0.008 40);
    --accent-tint: oklch(0.58 0.17 40 / 0.11);
    --accent-ring: oklch(0.58 0.17 40 / 0.5);
    --term-bg: oklch(0.165 0.009 50);
  }
}

/* orchid: muted violet accent on a faintly violet base. */
:root[data-palette="orchid"] {
  --bg: oklch(0.177 0.014 305);
  --bg-grid: oklch(0.213 0.017 305);
  --surface: oklch(0.213 0.017 305);
  --surface-2: oklch(0.251 0.02 305);
  --surface-3: oklch(0.291 0.021 305);
  --border: oklch(0.318 0.022 305);
  --border-strong: oklch(0.4 0.024 305);
  --ink: oklch(0.935 0.01 305);
  --muted: oklch(0.715 0.018 305);
  --faint: oklch(0.575 0.018 305);
  --accent: oklch(0.78 0.13 310);
  --accent-strong: oklch(0.82 0.135 310);
  --accent-ink: oklch(0.22 0.05 310);
  --accent-tint: oklch(0.78 0.13 310 / 0.14);
  --accent-ring: oklch(0.78 0.13 310 / 0.55);
  /* Same collision as periwinkle: an orchid accent needs a non-purple preview. */
  --preview-h: 195;
  --term-bg: oklch(0.155 0.014 305);
}
:root[data-palette="orchid"][data-theme="light"],
:root[data-palette="orchid"][data-theme="light"] body {
  --bg: oklch(0.983 0.004 305);
  --bg-grid: oklch(0.93 0.007 305);
  --surface: oklch(1 0 0);
  --surface-2: oklch(0.961 0.005 305);
  --surface-3: oklch(0.93 0.007 305);
  --border: oklch(0.886 0.01 305);
  --border-strong: oklch(0.82 0.013 305);
  --ink: oklch(0.27 0.018 305);
  --muted: oklch(0.47 0.018 305);
  --faint: oklch(0.62 0.018 305);
  --accent: oklch(0.5 0.17 308);
  --accent-strong: oklch(0.45 0.17 308);
  --accent-ink: oklch(0.99 0.005 308);
  --accent-tint: oklch(0.5 0.17 308 / 0.11);
  --accent-ring: oklch(0.5 0.17 308 / 0.5);
  --term-bg: oklch(0.165 0.014 305);
}
@media (prefers-color-scheme: light) {
  :root[data-palette="orchid"]:not([data-theme]) {
    --bg: oklch(0.983 0.004 305);
    --bg-grid: oklch(0.93 0.007 305);
    --surface: oklch(1 0 0);
    --surface-2: oklch(0.961 0.005 305);
    --surface-3: oklch(0.93 0.007 305);
    --border: oklch(0.886 0.01 305);
    --border-strong: oklch(0.82 0.013 305);
    --ink: oklch(0.27 0.018 305);
    --muted: oklch(0.47 0.018 305);
    --faint: oklch(0.62 0.018 305);
    --accent: oklch(0.5 0.17 308);
    --accent-strong: oklch(0.45 0.17 308);
    --accent-ink: oklch(0.99 0.005 308);
    --accent-tint: oklch(0.5 0.17 308 / 0.11);
    --accent-ring: oklch(0.5 0.17 308 / 0.5);
    --term-bg: oklch(0.165 0.014 305);
  }
}

/* ---------- reset / base ---------- */

* {
  box-sizing: border-box;
}

*:focus {
  outline: none;
}

html,
body {
  height: 100%;
  margin: 0;
  /* No pull-to-refresh / scroll chaining — terminal scroll wins on touch. */
  overscroll-behavior: none;
}

body {
  overflow-x: hidden;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  line-height: 1.45;
  font-feature-settings: "ss01", "cv01";
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* faint structural grid — terminal texture, not a CRT costume */
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 100% 64px, 64px 100%;
  background-position: center top;
  /* dim the grid via opacity on a fixed overlay would cost a node; bake it low instead */
}

#root {
  /* `--app-vh` tracks the *visual* viewport (set by useViewport) so
     the shell stays above the mobile soft keyboard; falls back to the layout
     viewport where `visualViewport` is unavailable. `--app-top` follows the
     layout viewport's scroll under the keyboard so the shell stays pinned to
     the visible region instead of drifting to the top. */
  height: var(--app-vh, 100%);
  transform: translateY(var(--app-top, 0px));
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 1px 5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
}

::selection {
  background: var(--accent-tint);
  color: var(--ink);
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::placeholder {
  color: var(--faint);
  opacity: 1;
}

:focus-visible {
  outline: 2px solid var(--accent-ring);
  outline-offset: 2px;
  border-radius: var(--r-1);
}

/* ---------- buttons ----------
   Terminal-native: the brackets are the chrome. Default + primary wear
   [ brackets ]; ghost/icon drop them for quieter nav and single glyphs. */

.btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink);
  padding: 0 var(--sp-1);
  height: var(--control-h);
  min-height: var(--control-h);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  font-weight: 500;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  white-space: nowrap;
  transition:
    color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}

.btn::before {
  content: "[";
  color: var(--faint);
}

.btn::after {
  content: "]";
  color: var(--faint);
}

.btn:hover {
  color: var(--accent);
}

.btn:hover::before,
.btn:hover::after {
  color: var(--accent);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  color: var(--accent);
  font-weight: 600;
}

.btn-primary::before,
.btn-primary::after {
  color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-tint);
}

/* Ghost: no brackets — quiet nav (back, disconnect, theme, kit) and icons. */
.btn-ghost {
  color: var(--muted);
}

.btn-ghost::before,
.btn-ghost::after {
  content: none;
}

.btn-ghost:hover {
  color: var(--ink);
  background: var(--surface-2);
}

.btn-icon {
  width: var(--control-h);
  padding: 0;
  font-size: var(--fs-15);
}

.btn-icon::before,
.btn-icon::after {
  content: none;
}

.btn-icon:hover {
  background: var(--surface-2);
}

/* ---------- app shell: sidebar + content ---------- */

.app-shell {
  flex: 1 1 auto;
  min-height: 0;
}

/* Desktop: persistent two-pane split. Sidebar holds the session list; the
   content pane shows the welcome state or the attached terminal. */
@media (min-width: 860px) {
  .app-shell {
    display: grid;
    grid-template-columns:
      var(--sidebar-w, clamp(220px, 22vw, 320px)) minmax(0, 1fr);
  }
}

.sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  position: relative;
  background: color-mix(in oklab, var(--surface) 26%, var(--bg));
  border-right: 1px solid var(--border);
}

/* Drag-to-resize grip on the sidebar's right edge (desktop split only). */
.sidebar-resize {
  position: absolute;
  top: 0;
  right: -3px;
  width: 6px;
  height: 100%;
  cursor: col-resize;
  z-index: var(--z-sticky);
  touch-action: none;
}

.sidebar-resize:hover,
.sidebar-resize:active {
  background: var(--accent-ring);
}

@media (max-width: 859px) {
  .sidebar-resize {
    display: none;
  }
}

/* Sidebar's own slim header: just the session search. */
/* The search input IS the header — it spans edge to edge, flush, with just a
   bottom rule for separation. No wrapper padding, no boxed border/radius. */
.sidebar-search {
  flex: 0 0 auto;
}

/* App-level actions (help, theme, spawn), pinned to the sidebar's foot. */
.sidebar-footer {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex: 0 0 auto;
  padding: var(--sp-2) var(--sp-3);
  border-top: 1px solid var(--border);
}

.sidebar-footer .spawn-btn {
  flex: 1 1 auto;
}

/* Palette picker: a ghost-button-shaped <select>. */
.palette-select {
  appearance: none;
  height: var(--control-h);
  padding: 0 var(--sp-2);
  border: 1px solid transparent;
  border-radius: var(--r-2);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  cursor: pointer;
  max-width: 9ch;
  text-overflow: ellipsis;
  transition:
    color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.palette-select:hover {
  color: var(--ink);
  border-color: var(--border-strong);
}

.palette-select:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
}

/* ---------- daemon status dot ---------- */

/* Colour is the link state; the tooltip names the release the daemon is
   running. The chip is a button so the keyboard reaches the tooltip too. */
.status-chip {
  position: relative;
  flex: 0 0 auto;
  overflow: visible;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 3px transparent;
  transition:
    background var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}

.status-chip[data-state="online"] .status-dot {
  background: var(--live);
}

.status-chip[data-state="connecting"] .status-dot,
.status-chip[data-state="reconnecting"] .status-dot {
  background: var(--warn);
  animation: pulse 1.1s var(--ease-out) infinite;
}

.status-chip[data-state="down"] .status-dot,
.status-chip[data-state="updating"] .status-dot {
  background: var(--danger);
  animation: pulse 1.1s var(--ease-out) infinite;
}

.status-tip {
  position: absolute;
  bottom: calc(100% + var(--sp-2));
  left: 0;
  z-index: var(--z-sticky);
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 180px;
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  background: var(--surface-2);
  box-shadow: var(--shadow-2);
  font-size: var(--fs-11);
  text-align: left;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--dur-fast) var(--ease-out),
    visibility var(--dur-fast) var(--ease-out);
}

.status-chip:hover .status-tip,
.status-chip:focus-visible .status-tip {
  opacity: 1;
  visibility: visible;
}

.status-tip-state {
  color: var(--fg);
}

.status-tip-release {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- restart overlay ---------- */

/* Up while the daemon is unreachable or being replaced. Nothing to dismiss:
   it clears itself when the link is back (docs/RESTART.md). */
.restart-modal {
  max-width: 380px;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
}

.restart-modal h2 {
  font-size: var(--fs-15);
  margin: 0;
}

.restart-detail {
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-13);
}

.restart-release {
  margin: 0;
  color: var(--faint);
  font-size: var(--fs-11);
  font-variant-numeric: tabular-nums;
}

.restart-spinner {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  animation: spin 900ms linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .restart-spinner,
  .status-dot {
    animation: none;
  }
}

.sidebar-search .search {
  width: 100%;
  max-width: none;
  height: var(--bar-h);
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
}

.sidebar-search .search:hover {
  background: var(--surface-2);
  border-bottom-color: var(--border-strong);
}

.sidebar-search .search:focus {
  background: var(--surface-2);
  border-bottom-color: var(--accent);
  box-shadow: none;
}

.content {
  min-width: 0;
  min-height: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}

.content-welcome {
  margin: auto;
  max-width: 48ch;
}

/* Off-screen home for parked-but-connected terminals. Kept in the DOM (not
   display:none) so the live WS keeps buffering into each terminal; on
   re-mount we fit + the scrollback is already there, so switching is instant. */
.conn-cache {
  position: fixed;
  left: -99999px;
  top: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- catalog ---------- */

.catalog {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}

.catalog-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 82%, transparent);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-right: auto;
}

.brand-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 4px var(--live-glow);
  flex: 0 0 auto;
  animation: pulse 2.4s var(--ease-out) infinite;
}

.brand h1 {
  margin: 0;
  font-size: var(--fs-17);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand .blink {
  color: var(--accent);
  font-weight: 400;
  animation: blink 1.2s steps(1) infinite;
}

.catalog-actions {
  display: flex;
  flex: 1 1 280px;
  gap: var(--sp-2);
  align-items: center;
  justify-content: flex-end;
}

.search {
  flex: 1 1 200px;
  max-width: 340px;
  height: var(--control-h);
  padding: 0 var(--sp-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  color: var(--ink);
  transition:
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.search:hover {
  border-color: var(--border-strong);
}

.search:focus {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--accent-tint);
}

/* ---------- session tree ---------- */

.tree {
  flex: 1 1 auto;
  overflow: auto;
  padding: var(--sp-1) 0 var(--sp-4);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.tree-folder {
  display: flex;
  flex-direction: column;
}

.tree-folder-header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  background: transparent;
  border: 0;
  width: 100%;
  text-align: left;
  height: 38px;
  padding-right: var(--sp-4);
  color: var(--muted);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
}

.tree-folder-header:hover {
  color: var(--ink);
}

.tree-folder-header .chevron {
  width: 16px;
  text-align: center;
  color: var(--faint);
  font-size: var(--fs-11);
  /* The rotation is the collapse animation and stays; the hover colour is
     immediate, like the row's own hover. */
  transition: transform var(--dur) var(--ease-out);
}

.tree-folder-header[aria-expanded="false"] .chevron {
  transform: rotate(-90deg);
}

.tree-folder-header:hover .chevron {
  color: var(--accent);
}

.folder-name {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--ink);
  font-size: var(--fs-14);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Earlier path segments collapse to their initial; the trailing segment (the
   one that actually names the dir) stays full. Dim the collapsed prefix. */
.folder-name .folder-stem {
  color: var(--faint);
}

.tree-leaf {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 1px 0;
  padding: 4px var(--sp-3);
  border-radius: var(--r-1);
  color: var(--ink);
  position: relative;
  /* No transition on `background`: it is what hover, the keyboard cursor and
     the preview all paint, and easing it puts a visible delay between the input
     landing on a row and the row admitting it. `.is-active`'s ring still eases
     — being open in a pane is a state, not a response to the pointer. */
  transition: box-shadow var(--dur-fast) var(--ease-out);
}

/* Session-row tiers (docs/SIDEBAR.md). A row is usually several of these at
   once, so every qualifier below sits in `:where()`: each rule is worth the
   same specificity and the ladder is decided purely by the order they appear
   in, latest wins. Add a tier where it belongs in that order, not by piling on
   another class to out-weigh the rule above it. Each tier paints a background
   and nothing else — the list says all of this with fill, never an edge. */

/* 1. Alive. A faint wash on the row itself — no per-row status icon. */
.tree-leaf:where([data-status="running"]) {
  background: color-mix(in oklab, var(--accent) 6%, transparent);
}

/* 2. Under the pointer, or under the keyboard walk. Both are what previews a
   row (docs/PREVIEW.md), so both read in the preview hue — never the accent,
   which belongs to the row actually open. */
.tree-leaf:where(:hover, .is-highlighted) {
  background: color-mix(in oklab, var(--preview) 12%, var(--surface-2));
}

.tree-leaf:where([data-status="running"]):where(:hover, .is-highlighted) {
  background: color-mix(in oklab, var(--preview) 18%, var(--surface-2));
}

.tree-leaf:where(:focus-visible) {
  outline: none;
  background: color-mix(in oklab, var(--accent) 16%, var(--surface-2));
}

/* A folder row previews nothing, so its cursor stays a ring. */
.tree-folder-header.is-highlighted {
  box-shadow: inset 0 0 0 2px var(--accent-ring);
}

.tree {
  outline: none;
}

/* 3. Open in some pane, but not the focused one (issue #33). */
.tree-leaf:where(.is-open) {
  background: color-mix(in oklab, var(--accent) 6%, transparent);
}

/* 4. The session currently mounted in the content pane. */
.tree-leaf:where(.is-active) {
  background: var(--accent-fill);
}

.tree-leaf.is-active .leaf-name {
  color: var(--ink);
}

/* 5. The row the content pane is previewing right now. Last, so previewing a
   session that is already open still reads as provisional — except the session
   already mounted in the pane (tier 4). Previewing that one changes nothing on
   screen, so its accent stays put instead of blinking out under the pointer. */
.tree-leaf:where(.is-previewing):where(:not(.is-active)) {
  background: var(--preview-tint);
}

/* Exited sessions recede: dimmed name + an "exited" badge carry status, so it's
   never the running tint's absence alone doing the work. */
.tree-leaf[data-status="dead"] {
  color: var(--muted);
}

.tree-leaf[data-status="dead"] .leaf-name {
  color: var(--muted);
  font-weight: 400;
}

/* #120: every session card has two lines, so its row height is stable. */
.tree-leaf.session-card {
  flex-direction: column;
  align-items: stretch;
  gap: 1px;
  /* 24px action row + 16px meta row + 1px gap + 8px vertical padding. */
  height: 49px;
}

.card-line1 {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  min-width: 0;
}

.leaf-name {
  font-weight: 500;
  font-size: var(--fs-13);
  /* Grows to push the actions to the right edge but shrinks first, so the name
     truncates before it can ever reach them — overlap is a defect (#107). */
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* #131: a name the daemon generated at spawn is provisional — the first prompt
   may replace it — so it reads as placeholder text rather than a chosen name.
   A session that never prompts simply keeps it, dimmed; that is accurate. */
.leaf-name.is-provisional {
  color: var(--muted);
  font-weight: 400;
}

/* Inline rename field (#125): sits exactly where the name it replaces did, so
   the card does not jump when the edit starts. */
input.leaf-rename {
  font: inherit;
  font-weight: 500;
  font-size: var(--fs-13);
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--accent-ring);
  border-radius: var(--r-2);
  padding: 0 var(--sp-1);
  min-width: 0;
}

input.leaf-rename:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-tint);
}

/* Right-click menu on a session card (#125). Positioned from the click point,
   so it is fixed to the viewport rather than to the scrolling sidebar. */
.context-menu {
  position: fixed;
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  min-width: 168px;
  padding: var(--sp-1);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-2);
}

.context-menu-item {
  appearance: none;
  background: none;
  border: 0;
  border-radius: var(--r-2);
  color: var(--ink);
  font: inherit;
  font-size: var(--fs-13);
  text-align: left;
  padding: var(--sp-1) var(--sp-2);
  cursor: pointer;
}

.context-menu-item:hover,
.context-menu-item:focus-visible {
  background: var(--surface-3);
  outline: none;
}

.context-menu-item.is-danger {
  color: var(--danger);
}

.context-menu-item.is-danger:hover,
.context-menu-item.is-danger:focus-visible {
  background: var(--danger-tint);
}

/* ---------- help overlay (`?`) ---------- */
.help-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--sp-4);
  background: oklch(0 0 0 / 0.5);
  backdrop-filter: blur(4px);
}

.help-panel {
  width: min(440px, 100%);
  max-height: min(80vh, 640px);
  overflow-y: auto;
  padding: var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-2);
}

.help-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.help-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  color: var(--ink);
}

.help-close {
  appearance: none;
  background: none;
  border: 0;
  border-radius: var(--r-2);
  color: var(--muted);
  font: inherit;
  line-height: 1;
  padding: var(--sp-1) var(--sp-2);
  cursor: pointer;
}

.help-close:hover,
.help-close:focus-visible {
  background: var(--surface-3);
  color: var(--ink);
  outline: none;
}

.help-group + .help-group {
  margin-top: var(--sp-4);
}

.help-group-title {
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-11);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}

.help-list {
  margin: 0;
}

/* Keycaps in a fixed column so the descriptions line up down the list. */
.help-row {
  display: grid;
  grid-template-columns: 14ch 1fr;
  align-items: baseline;
  gap: var(--sp-3);
  padding: var(--sp-1) 0;
}

.help-keys {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--sp-1);
  margin: 0;
}

.help-keys kbd {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: var(--r-1);
  padding: 1px 6px;
  color: var(--ink);
}

.help-desc {
  margin: 0;
  font-size: var(--fs-13);
  color: var(--muted);
}

/* ---------- command bar (Ctrl+K) — docs/COMMAND-BAR.md ---------- */
/* Same family of surface as the spawn modal and the help overlay: the overlay
   tokens below are theirs, not a third set. */
.cmdbar-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  grid-template-rows: 12vh auto 1fr;
  justify-items: center;
  padding: var(--sp-4);
  background: oklch(0 0 0 / 0.5);
  backdrop-filter: blur(4px);
}

.cmdbar-panel {
  grid-row: 2;
  display: flex;
  flex-direction: column;
  width: min(560px, 100%);
  max-height: min(60vh, 520px);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-2);
}

.cmdbar-input {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  padding: var(--sp-3) var(--sp-4);
}

.cmdbar-input:focus-visible {
  outline: none;
}

.cmdbar-results {
  overflow-y: auto;
  padding: var(--sp-2) 0;
}

/* The action page's header (#151): names the session being acted on, so the
   target of kill/rename/spawn-similar is never ambiguous. */
.cmdbar-page-header {
  padding: var(--sp-2) var(--sp-4);
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-12);
  color: var(--muted);
}

.cmdbar-group-title {
  padding: var(--sp-2) var(--sp-4) var(--sp-1);
  font-size: var(--fs-11);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}

.cmdbar-row {
  display: flex;
  align-items: baseline;
  gap: var(--sp-3);
  padding: var(--sp-1) var(--sp-4);
  cursor: pointer;
}

.cmdbar-row.is-active {
  background: var(--surface-3);
}

.cmdbar-row-name {
  font-size: var(--fs-13);
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* A dead session still lists — it just is not where you just were. */
.cmdbar-row.is-dead .cmdbar-row-name {
  color: var(--muted);
}

.cmdbar-row-meta {
  flex: 1 1 auto;
  min-width: 0;
  font-size: var(--fs-11);
  color: var(--faint);
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* A command row's chord, shown so the bar teaches the keymap. */
.cmdbar-row-keys {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-1);
  min-width: 0;
}

.cmdbar-row-keys kbd {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  padding: 0 var(--sp-1);
}

.cmdbar-hit {
  background: none;
  color: var(--accent);
  font-weight: 600;
}

.cmdbar-empty {
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--fs-13);
  color: var(--muted);
}

/* Phone: the bottom-sheet treatment the spawn modal already uses. */
/* Bottom sheet at phone width, the same treatment (and the same 599px break)
   the spawn modal uses: the bar is reached by thumb here, through the sidebar's
   search field (#157), so it rides the bottom of the screen. */
@media (max-width: 599px) {
  .cmdbar-overlay {
    grid-template-rows: 1fr auto;
    padding: 0;
  }

  .cmdbar-panel {
    grid-row: 2;
    width: 100%;
    max-height: 70dvh;
    border-radius: var(--r-3) var(--r-3) 0 0;
    border-bottom: 0;
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }

  /* Thumb-sized rows and a field that clears the on-screen keyboard's
     zoom-on-focus threshold (16px). */
  .cmdbar-input {
    font-size: var(--fs-17);
    min-height: 44px;
  }

  .cmdbar-row {
    min-height: 44px;
  }
}

/* Line 2 — dot + duration in the state's colour, then muted fragments. The
   state word itself is never spelled out here; the colour carries it. */
.card-line2 {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-11);
  min-width: 0;
  color: var(--muted);
}

.card-line2[data-activity="active"] {
  color: var(--live);
}
.card-line2[data-activity="idle"] {
  color: var(--muted);
}
.card-line2[data-activity="awaiting-input"] {
  color: var(--warn);
}
.card-line2[data-activity="error"] {
  color: var(--danger);
}

/* docs/SIDEBAR.md: the activity rail replaces the old inline dot. It is
   pinned to the row's own left edge, full height, square corners — see
   catalog.ts. Idle stays solid and still on purpose: motion is reserved for
   states that need attention (DESIGN.md's "living signals" rule). */
.activity-rail {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 7px;
  background: currentColor;
}

.activity-rail[data-activity="active"] {
  color: var(--live);
}
.activity-rail[data-activity="idle"] {
  color: var(--border-strong);
}
.activity-rail[data-activity="awaiting-input"] {
  color: var(--warn);
  animation: blink 1.2s steps(1) infinite;
}
.activity-rail[data-activity="error"] {
  color: var(--danger);
  animation: rail-flash 1.4s ease-out infinite;
}

.activity-duration {
  color: inherit;
  flex: 0 0 auto;
}

/* Agent-reported detail (#112): sits after the duration, shrinks with an
   ellipsis so it never pushes the trailing fragments off the line. */
.activity-detail {
  color: var(--faint);
  /* Consume only the space left after the trailing status + command. */
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Blocked-work / exited / command fragments recede: the ⚠ glyph already
   signals severity and "exited" dims with the row. */
.card-flag {
  color: var(--faint);
  flex: 0 0 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Status fragments stay intact. The unconditional command is the final
   truncation target when even the complete trailing set cannot fit. */
.leaf-cmd {
  flex: 0 1 auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
}

/* The tool's mark stands in for the program the command line starts with
   (docs/SIDEBAR.md). It keeps its own colours where the tool has brand
   colours, and inherits the muted fragment colour where it does not. */
.tool-icon {
  flex: 0 0 auto;
  opacity: 0.9;
}

.leaf-cmd-rest {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Blocked work as diff notation: `+124 -18 ?3 ↑2` (docs/SIDEBAR.md). The
   spelled-out breakdown is the tooltip; only the additions and deletions take
   colour, so the ⚠-less fragment still reads as a diff and not as an alarm. */
.leaf-blocked {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-variant-numeric: tabular-nums;
}

.blocked-stat[data-stat="add"] {
  color: var(--live);
}
.blocked-stat[data-stat="del"] {
  color: var(--danger);
}
.blocked-stat[data-stat="files"],
.blocked-stat[data-stat="untracked"],
.blocked-stat[data-stat="unpushed"] {
  color: var(--faint);
}

/* Actions live in line 1's flow at its right edge — never overlaid on the
   name (#107). They reserve their width even while hover-faded. */
.leaf-actions {
  flex: 0 0 auto;
  margin-left: auto;
  display: inline-flex;
  gap: 2px;
}

.leaf-act {
  background: var(--surface-3);
  color: var(--faint);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  width: 24px;
  height: 24px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-12);
  transition:
    color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

@media (hover: hover) {
  .leaf-actions {
    opacity: 0;
    transition: opacity var(--dur-fast) var(--ease-out);
  }
  .tree-leaf:hover .leaf-actions,
  .tree-leaf:focus-within .leaf-actions {
    opacity: 1;
  }
}

.leaf-clone:hover {
  color: var(--accent);
  background: var(--accent-tint);
  border-color: color-mix(in oklab, var(--accent) 40%, transparent);
}

.leaf-kill:hover {
  color: var(--danger);
  background: var(--danger-tint);
  border-color: color-mix(in oklab, var(--danger) 40%, transparent);
}

/* ---------- forced-kill prompt (#81) ---------- */
.kill-dialog {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--sp-4);
  background: oklch(0 0 0 / 0.5);
  backdrop-filter: blur(4px);
}

.kill-dialog-panel {
  width: min(400px, 100%);
  padding: var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-2);
}

.kill-dialog-title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  color: var(--ink);
}

.kill-dialog-body {
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-13);
  line-height: 1.5;
}

.kill-dialog-error {
  margin: var(--sp-2) 0 0;
  color: var(--danger);
  font-size: var(--fs-13);
}

.kill-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.btn-danger {
  color: var(--danger);
  border-color: color-mix(in oklab, var(--danger) 40%, transparent);
}

.btn-danger:hover {
  background: var(--danger-tint);
  border-color: var(--danger);
}

/* ---------- empty / loading ---------- */

.empty {
  padding: var(--sp-5) var(--sp-4);
  color: var(--muted);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-sans);
}

.empty-glyph {
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: var(--surface);
}

.empty-title {
  color: var(--ink);
  font-size: var(--fs-15);
  font-family: var(--font-mono);
}

.empty-hint {
  font-size: var(--fs-13);
  max-width: 42ch;
}

.empty-hint kbd {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: var(--r-1);
  padding: 1px 6px;
  color: var(--ink);
}

.empty-actions {
  display: flex;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

/* ---------- attach view ---------- */

.attach {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--bg);
}

.attach-header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  height: var(--bar-h);
  flex: 0 0 var(--bar-h);
  padding: 0 var(--sp-2);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

/* Compact controls so the bar hugs the title — no tall buttons. */
.attach-header .btn {
  height: 26px;
  min-height: 26px;
}

.attach-header .btn-icon {
  width: 26px;
}

/* Opens the off-canvas session drawer. Desktop keeps the sidebar permanently in
   view, so it is mobile-only — same rule as the welcome state's ☰. */
.attach-header .sessions-btn {
  font-size: var(--fs-15);
  width: 28px;
  height: 26px;
}

@media (min-width: 860px) {
  .attach-header .sessions-btn,
  .welcome-sessions {
    display: none;
  }
}

.attach-header .disconnect {
  color: var(--faint);
}

.attach-header .disconnect:hover {
  color: var(--danger);
  background: var(--danger-tint);
  border-color: color-mix(in oklab, var(--danger) 40%, transparent);
}

.attach-title {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 auto;
}

.attach-title .sid {
  color: var(--muted);
}

.attach-title .at-name {
  color: var(--ink);
  font-weight: 500;
}

.attach-title .at-cmd {
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.attach-title .at-cmd::before {
  content: "·";
  margin: 0 6px;
  color: var(--faint);
}

.attach-title .at-host {
  color: var(--faint);
  margin-left: 6px;
}

.attach-title .at-host::before {
  content: "@";
  opacity: 0.6;
}

.attach-state {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-12);
  padding: 2px var(--sp-2);
  border-radius: var(--r-pill);
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.attach-state::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.attach-state[data-state="connecting"] {
  color: var(--warn);
}

.attach-state[data-state="connecting"]::before {
  animation: pulse 1.2s var(--ease-out) infinite;
}

.attach-state[data-state="open"] {
  color: var(--accent);
}

.attach-state[data-state="open"]::before {
  box-shadow: 0 0 6px var(--live-glow);
}

.attach-state[data-state="closed"],
.attach-state[data-state="error"] {
  color: var(--danger);
}

.attach-body {
  flex: 1 1 auto;
  min-height: 0;
  padding: var(--sp-2);
  display: flex;
  overflow: hidden;
  background: var(--term-bg);
}

.attach-body .xterm {
  width: 100%;
  height: 100%;
}

/* xterm hard-codes overflow-y: scroll on its viewport — an always-on bar that
   (a) shows even with no scrollback and (b) makes FitAddon subtract its width,
   costing a column. Hide it entirely: scroll still works via wheel/touch/keys,
   and fit reclaims the full width. */
/* Higher specificity than xterm's own `.xterm .xterm-viewport` (which loads
   after this and would otherwise win the tie) so the always-on scrollbar
   reservation actually goes away. */
.attach-body .xterm .xterm-viewport {
  overflow-y: auto;
  scrollbar-width: none;
}

/* Maestro drives scrollback from touchmove (see attach.ts), so the browser must
   not claim the gesture. On `.xterm`, not the viewport: `.xterm-screen` paints
   over the viewport and is what a finger lands on. */
.attach-body .xterm {
  touch-action: none;
}

.attach-body .xterm .xterm-viewport::-webkit-scrollbar {
  width: 0;
  height: 0;
}

/* Mobile: full-bleed terminal — the desktop frame padding wastes space and the
   sub-cell remainder it left was triggering a stray scrollbar. */
@media (max-width: 859px) {
  .attach-body {
    padding: 0;
  }
}

.attach-status {
  margin: var(--sp-4);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-2);
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: var(--fs-14);
  color: var(--muted);
}

.attach-status.status-error {
  border-color: color-mix(in oklab, var(--danger) 50%, var(--border));
  color: var(--danger);
}

/* ---------- mobile special-key bar (Termux-style) ---------- */

/* Two compact rows (Termux layout) in an 8-column grid the 16 keys flow into:
   Esc/Tab + Ctrl/Alt on the left, cursor keys as a real-keyboard inverted-T in
   the middle (Home/End fill the top corners), then PgUp/PgDn and the shell
   symbols. Columns never shrink below a thumb's width — on a narrow phone the
   bar scrolls sideways instead. Layout is always defined; only *visibility* is
   gated: hidden on precise-pointer devices (a physical keyboard already has
   these keys), shown on touch where the soft keyboard omits them. The shell
   tracks the visual viewport (see `#root`), so it lands above it. */
.attach-keybar {
  display: none;
  grid-template-columns: repeat(8, minmax(2.5rem, 1fr));
  gap: var(--sp-1);
  padding: var(--sp-1) var(--sp-2);
  padding-bottom: calc(var(--sp-1) + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border);
  background: var(--surface);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.attach-keybar::-webkit-scrollbar {
  display: none;
}

/* Shown on touch only while *this* terminal is focused (`keybar-active`, toggled
   on textarea focus/blur in attach.ts) AND the soft keyboard is actually up
   (`html.kb-open`, detected from the visual-viewport shrink in viewport.ts).
   Both are needed: dismissing the keyboard doesn't blur the terminal, so focus
   alone would leave the bar lingering. */
@media (pointer: coarse) {
  html.kb-open .attach-keybar.keybar-active {
    display: grid;
  }
}

.attach-keybar .keycap {
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  cursor: pointer;
  transition:
    background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.attach-keybar .keycap:active {
  background: var(--surface-3);
  border-color: var(--border-strong);
}

/* Explicit press feedback: `pointerdown` preventDefault (kept for terminal
   focus) suppresses native `:active` on touch, so flash a quick spring. */
@keyframes keycap-press {
  0% {
    transform: scale(0.92);
    background: var(--accent-tint);
    border-color: var(--accent);
  }
  100% {
    transform: scale(1);
  }
}

.attach-keybar .keycap.is-pressed {
  animation: keycap-press 200ms var(--ease-out);
}

/* Armed sticky modifier (Ctrl/Alt): lit in signal-green until it folds into the
   next key. */
.attach-keybar .keycap-mod[aria-pressed="true"] {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: var(--accent-strong);
}

/* ---------- structured view (#140) ----------
   `.attach.structured` reuses `.attach`'s flex column, `.attach-header` and
   `.attach-state` verbatim (attach.ts and structured.ts share paneTitle.ts's
   header markup) — only the body differs: a transcript and composer instead
   of an xterm surface. Hierarchy is deliberate: the approval is the
   only lifted, card-like element on the page; everything else is either a
   tinted block (user), plain text (agent), or a thin bordered row (tool). */

.structured-config {
  position: relative;
  flex: 0 0 40px;
}

.structured-config-trigger {
  width: 40px;
  height: 40px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0;
  border: 0;
  border-radius: var(--r-2);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.structured-config-trigger svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
}

.structured-config-trigger:hover,
.structured-config-trigger[aria-expanded="true"] {
  color: var(--ink);
  background: var(--surface-3);
}

.structured-config-trigger:focus-visible,
.structured-config-select:focus-visible,
.structured-config-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.structured-config-menu {
  position: absolute;
  z-index: 20;
  bottom: calc(100% + var(--sp-2));
  right: 0;
  width: min(320px, 86vw);
  padding: var(--sp-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  background: var(--surface);
  box-shadow: var(--shadow-2);
}

.structured-config-row {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) minmax(0, 1.6fr);
  align-items: center;
  gap: var(--sp-3);
  min-height: 34px;
  padding: var(--sp-1) var(--sp-2);
  color: var(--ink);
  font-size: var(--fs-12);
}

.structured-config-row + .structured-config-row {
  border-top: 1px solid var(--border);
}

.structured-config-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.structured-config-select {
  min-width: 0;
  height: 28px;
  padding: 0 var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  background: var(--surface-2);
  color: var(--ink);
  font: inherit;
}

.structured-config-toggle {
  justify-self: end;
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
}

.structured-body {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
}

.attach.structured,
.attach.structured .attach-title,
.structured-input {
  font-family: var(--font-sans);
}

.st-row-agent code,
.st-tool-text,
.st-tool-detail pre,
.st-diff,
.st-approval-path {
  font-family: var(--font-mono);
}

.structured-main {
  min-width: 0;
  min-height: 0;
  max-width: 820px;
  margin-inline: auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
}

.structured-scroll {
  flex: 1 1 auto;
  min-height: 0;
  min-width: 0;
  overflow-y: auto;
}

.structured-rows {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.structured-activity {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  min-height: 30px;
  padding: var(--sp-1) var(--sp-3);
  color: var(--muted);
  font-size: var(--fs-11);
  font-variant-numeric: tabular-nums;
}

.structured-activity[hidden] {
  display: none;
}

.structured-activity-pulse {
  position: relative;
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 0 var(--live-glow);
  animation: structured-thinking 1.6s ease-out infinite;
}

@keyframes structured-thinking {
  50% {
    box-shadow: 0 0 0 5px transparent;
  }
}

/* every transcript row carries its own layout; none of them are cards */
.st-row {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-3);
  min-width: 0;
}

.st-body {
  flex: 1 1 auto;
  min-width: 0;
}

/* User turns read as compact chat bubbles while the padded row remains the
   full hover/copy target. */
.st-row-user {
  justify-content: flex-end;
}

.st-row-user .st-body {
  flex: 0 1 auto;
  max-width: min(86%, 72ch);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-2);
  background: var(--surface-3);
}

.st-row-user:hover {
  background: var(--surface-2);
}

/* Queued messages: optimistic user bubbles, not yet sent. */
.st-row-queued {
  justify-content: flex-end;
  pointer-events: none;
}

.st-row-queued .st-body {
  flex: 0 1 auto;
  max-width: min(86%, 72ch);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-2);
  background: var(--surface-3);
  opacity: 0.45;
  filter: blur(0.5px);
}

.st-user-text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.st-user-image {
  display: block;
  max-width: min(100%, 480px);
  max-height: 360px;
  margin-top: var(--sp-2);
  border-radius: var(--r-1);
  object-fit: contain;
}

/* agent prose: no card, no background — plain text is the point */
.st-row-agent .st-body p {
  margin: 0 0 var(--sp-2);
  overflow-wrap: anywhere;
}

.st-row-agent .st-body p:last-child {
  margin-bottom: 0;
}

.st-row-agent .st-body > :first-child {
  margin-top: 0;
}

.st-row-agent .st-body > :last-child {
  margin-bottom: 0;
}

.st-row-agent .st-body h1,
.st-row-agent .st-body h2,
.st-row-agent .st-body h3,
.st-row-agent .st-body h4 {
  margin: var(--sp-4) 0 var(--sp-2);
  color: var(--ink);
  font-size: var(--fs-14);
  line-height: 1.35;
}

.st-row-agent .st-body ul,
.st-row-agent .st-body ol {
  margin: var(--sp-2) 0;
  padding-left: var(--sp-5);
}

.st-row-agent .st-body li + li {
  margin-top: var(--sp-1);
}

.st-row-agent .st-body pre {
  margin: var(--sp-2) 0;
  padding: var(--sp-3);
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  background: var(--surface-2);
}

.st-row-agent .st-body pre code {
  padding: 0;
  border: 0;
  background: transparent;
}

.st-row-agent .st-body a {
  color: var(--ink);
  text-decoration-color: var(--border-strong);
  text-underline-offset: 2px;
}

.st-markdown-table-wrap {
  max-width: 100%;
  margin: var(--sp-2) 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
}

.st-row-agent table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-12);
}

.st-row-agent th,
.st-row-agent td {
  padding: var(--sp-2) var(--sp-3);
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}

.st-row-agent th {
  color: var(--ink);
  background: var(--surface-2);
  font-weight: 600;
}

.st-row-agent tr:last-child td {
  border-bottom: 0;
}

.st-row-agent code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  padding: 0 3px;
  font-size: 0.92em;
}

.st-row-thought {
  color: var(--faint);
  font-size: var(--fs-12);
  line-height: 1.4;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.st-row-notice {
  color: var(--faint);
  font-size: var(--fs-12);
}

.st-turn-meta {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0 var(--sp-3) var(--sp-2);
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--r-1);
  color: var(--faint);
  font-size: var(--fs-11);
  font-variant-numeric: tabular-nums;
}

.st-turn-meta:hover {
  background: var(--surface-2);
  color: var(--muted);
}

.st-turn-meta-dot {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--live);
}

.st-turn-meta-cancelled .st-turn-meta-dot {
  background: var(--warn);
}

.st-turn-meta-failed .st-turn-meta-dot {
  background: var(--danger);
}

.st-copyable {
  position: relative;
  border-radius: var(--r-1);
  cursor: copy;
  transition: background var(--dur-fast) var(--ease-out);
}

.st-copyable::after {
  content: none;
  position: absolute;
  top: var(--sp-1);
  right: var(--sp-1);
  padding: 1px var(--sp-1);
  border-radius: var(--r-1);
  background: var(--surface-3);
  color: var(--faint);
  font-size: var(--fs-11);
  font-style: normal;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.st-copyable:focus-visible {
  background: var(--surface-2);
  outline: none;
}

@media (hover: hover) {
  .st-copyable:hover {
    background: var(--surface-2);
  }

  .st-copyable:hover::after {
    content: "copy";
    opacity: 1;
  }

  .st-copyable[data-copy-state="copied"]:hover::after {
    content: "copied";
    color: var(--live);
  }

  .st-copyable[data-copy-state="error"]:hover::after {
    content: "copy failed";
    color: var(--danger);
  }
}

/* tool rows: bordered, compact, deliberately not lifted */
.st-tool {
  flex: 1 1 auto;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  min-width: 0;
}

.st-tool-head {
  appearance: none;
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  min-width: 0;
  transition: background var(--dur-fast) var(--ease-out);
}

.st-tool-head:hover {
  background: var(--surface-2);
}

.st-row-tool:hover,
.st-row-approval:hover {
  background: var(--surface-2);
}

.st-tool-glyph {
  width: 16px;
  flex: 0 0 auto;
  text-align: center;
  color: var(--faint);
}

.st-tool-name {
  font-weight: 500;
  flex: 0 0 auto;
}

.st-tool-arg {
  flex: 1 1 0;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  text-align: left;
}

.st-tool-meta {
  margin-left: auto;
  flex: 0 0 auto;
  font-size: var(--fs-11);
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.st-tool-meta-running {
  color: var(--live);
}

.st-tool-meta-failed {
  color: var(--danger);
}

.st-tool-out {
  border-top: 1px solid transparent;
}

.st-disclosure {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition:
    grid-template-rows var(--dur) var(--ease-out),
    opacity var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.st-disclosure.is-expanded {
  grid-template-rows: 1fr;
  opacity: 1;
}

.st-disclosure-clip {
  min-height: 0;
  overflow: hidden;
}

.st-tool-out.is-expanded {
  border-top-color: var(--border);
}

.st-tool-out .st-disclosure-inner {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
}

/* `display: flex` above outranks the UA sheet's `[hidden]` (same pitfall as
   `.wt-step`/`.raw-wrap`) — restate it explicitly. */
.st-tool-out[hidden] {
  display: none;
}

.st-tool-text {
  font-size: var(--fs-12);
  color: var(--muted);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow-x: auto;
}

.st-tool-detail {
  min-width: 0;
}

.st-tool-detail-label {
  margin-bottom: var(--sp-1);
  color: var(--faint);
  font-size: var(--fs-11);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.st-tool-detail pre {
  margin: 0;
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  background: var(--bg);
  color: var(--muted);
  font: inherit;
  font-size: var(--fs-12);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow-x: auto;
}

.st-tool-fact {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  color: var(--faint);
  font-size: var(--fs-11);
}

.st-tool-fact code {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.st-tool-exit-ok {
  color: var(--live);
}

.st-tool-exit-failed {
  color: var(--danger);
}

.st-tool-image {
  display: block;
  width: auto;
  max-width: min(100%, 720px);
  max-height: 480px;
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  object-fit: contain;
}

.st-tool-audio {
  display: block;
  width: min(100%, 480px);
  min-height: var(--control-h);
}

.st-tool-resource {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: var(--sp-1) var(--sp-2);
  min-width: 0;
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  background: var(--bg);
  font-size: var(--fs-12);
}

.st-tool-resource-name {
  color: var(--ink);
  font-weight: 500;
}

.st-tool-resource-uri {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--muted);
}

.st-tool-resource-description {
  grid-column: 1 / -1;
  color: var(--muted);
}

.st-tool-terminal {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
}

.st-tool-raw {
  color: var(--faint);
  font-size: var(--fs-11);
}

.st-tool-raw summary {
  width: fit-content;
  padding-block: var(--sp-1);
  cursor: pointer;
  user-select: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.st-tool-raw summary:hover,
.st-tool-raw summary:focus-visible {
  color: var(--ink);
}

.st-tool-raw summary:focus-visible {
  border-radius: var(--r-1);
  outline: 2px solid var(--accent-ring);
  outline-offset: 2px;
}

.st-tool-raw-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding-top: var(--sp-1);
}

.st-tool-group {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  background: color-mix(in oklab, var(--surface-2) 55%, transparent);
  padding: var(--sp-1) var(--sp-2);
  transition: background var(--dur-fast) var(--ease-out);
}

.st-tool-group:hover {
  background: color-mix(in oklab, var(--surface-2) 70%, transparent);
}

.st-tool-group-head {
  appearance: none;
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0;
  min-width: 0;
  transition: color var(--dur-fast) var(--ease-out);
}

.st-tool-group-head:hover {
  background: var(--surface-2);
}

.st-tool-group-glyph {
  color: var(--faint);
  transition: transform var(--dur-fast) var(--ease-out);
}

.st-tool-group-head[aria-expanded="true"] .st-tool-group-glyph {
  transform: rotate(90deg);
}

.st-tool-group-title {
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}

.st-tool-group-body {
  padding-top: 0;
}

.st-tool-group-body .st-disclosure-inner {
  display: flex;
  flex-direction: column;
  padding-top: var(--sp-1);
}

.st-tool-group-body .st-disclosure-inner > .st-row-tool {
  padding: 0;
}

/* inside a group, tool cards lose their border and background —
   the group container already provides the visual boundary. */
.st-tool-group-body .st-tool {
  border: 0;
}

.st-tool-group-body .st-tool-head {
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--r-1);
}

/* intermediate agent text inside a tool group — subdued so the final
   answer outside the group stays the prominent one. */
.st-tool-group-body .st-row-agent {
  color: var(--muted);
  font-size: var(--fs-12);
  padding: var(--sp-1) var(--sp-2);
}

.st-tool-group-body .st-row-agent .st-body > :first-child {
  margin-top: 0;
}

.st-tool-group-body .st-row-agent .st-body > :last-child {
  margin-bottom: 0;
}

.st-tool-group-body .st-row-thought {
  padding: var(--sp-1) var(--sp-2);
}

.st-tool-group-body[hidden] {
  display: none;
}

/* Live transcript rows resolve into the stream through a short occlusion,
   matching data becoming concrete without replaying on token patches. */
.st-row-enter {
  animation: structured-row-enter var(--dur) var(--ease-out) both;
}

@keyframes structured-row-enter {
  from {
    opacity: 0.2;
    transform: translateY(3px);
    clip-path: inset(0 0 18% 0);
    filter: blur(1px);
  }
}

.st-diff-block {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.st-diff-path {
  font-size: var(--fs-11);
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* the diff gets its own horizontal scroller, independent of the page */
.st-diff {
  font-size: var(--fs-12);
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-1);
}

.st-diff pre {
  margin: 0;
}

.st-ln {
  display: block;
  white-space: pre;
  padding: 0 var(--sp-3);
  line-height: 1.4;
}

.st-ln-add {
  background: color-mix(in oklab, var(--live) 14%, transparent);
}

.st-ln-del {
  background: var(--danger-tint);
}

.st-ln-ctx {
  color: var(--muted);
}

.st-ln-hunk {
  color: var(--faint);
  background: var(--surface-2);
}

.st-ln-eof {
  color: var(--faint);
  font-style: italic;
}

/* the one lifted, card-like element on the surface: the only thing the
   operator owes a decision on */
.st-approval {
  border: 1px solid var(--warn);
  border-radius: var(--r-2);
  background: color-mix(in oklab, var(--warn) 12%, var(--surface));
  box-shadow: var(--shadow-1);
  padding: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  min-width: 0;
}

.st-approval-title {
  color: var(--warn);
  font-size: var(--fs-11);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.st-approval-what {
  color: var(--ink);
}

.st-approval-path {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  padding: var(--sp-2);
  font-size: var(--fs-12);
  overflow-x: auto;
  white-space: pre;
}

.st-approval-acts {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.st-approval-resolved {
  font-size: var(--fs-11);
  color: var(--faint);
}

/* compact resolved approval inside a tool group — same muted treatment
   as intermediate agent text so the audit trail is preserved without
   drawing attention to itself. */
.st-approval-compact {
  color: var(--muted);
  font-size: var(--fs-12);
  padding: var(--sp-1) var(--sp-2);
  font-style: italic;
}

.act {
  appearance: none;
  font: inherit;
  font-size: var(--fs-12);
  height: 26px;
  padding: 0 var(--sp-3);
  border-radius: var(--r-2);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.act:hover {
  background: var(--surface-3);
}

.act:active {
  transform: translateY(1px);
}

.act:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.act.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 500;
}

.act.deny {
  color: var(--danger);
  border-color: color-mix(in oklab, var(--danger) 40%, transparent);
}

.act.deny:hover {
  background: var(--danger-tint);
  border-color: var(--danger);
}

/* The composer is a sibling of the scrolling transcript, not part of it: it
   stays reachable at the pane edge without changing transcript scroll math.
   It is a flush band at the foot of the pane rather than a floating card: its
   own `--surface` fill is what separates it from the transcript, over a
   hairline that doubles as the focus indicator. Inner metrics line the draft
   up with the transcript's own 12px gutter. */
.structured-composer {
  position: relative;
  flex: 0 0 auto;
  padding: var(--sp-1) var(--sp-1) max(var(--sp-1), env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: flex-end;
  gap: var(--sp-1);
  transition: border-color var(--dur-fast) var(--ease-out);
}


.structured-composer:focus-within {
  border-top-color: var(--border);
}

.structured-input-wrap {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
}

.structured-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
  padding: var(--sp-1);
}

.structured-attachments[hidden] { display: none; }

.structured-attachment {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  max-width: 100%;
  padding-left: var(--sp-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  font-size: var(--fs-11);
}

.structured-attachment > span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.structured-attachment button {
  flex-shrink: 0;
  min-width: var(--tap);
  min-height: var(--tap);
  border: 0;
  background: transparent;
  color: var(--muted);
}

.structured-attachment button:hover { color: var(--ink); }
.structured-attachment button:disabled { opacity: 0.5; }

.structured-input {
  display: block;
  width: 100%;
  min-width: 0;
  max-height: 160px;
  min-height: 40px;
  resize: none;
  overflow-y: hidden;
  padding: 10px var(--sp-2);
  border: 0;
  border-radius: var(--r-2);
  background: transparent;
  color: var(--ink);
  font-size: var(--fs-13);
  line-height: 20px;
}

.structured-input:focus-visible {
  outline: none;
}

.structured-composer .structured-send,
.structured-composer .structured-cancel {
  height: 40px;
  min-height: 40px;
  border-radius: var(--r-2);
  font-family: var(--font-sans);
}

.structured-composer .structured-send {
  gap: 6px;
  padding: 0 var(--sp-3);
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 650;
  box-shadow: inset 0 1px 0 color-mix(in oklab, white 24%, transparent);
}

.structured-composer .structured-send::before,
.structured-composer .structured-send::after,
.structured-composer .structured-cancel::before,
.structured-composer .structured-cancel::after {
  content: none;
}

.structured-composer .structured-send svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--dur-fast) var(--ease-out);
}

.structured-composer .structured-send:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--accent-ink);
}

.structured-composer .structured-send:hover svg {
  transform: translateX(2px);
}

.structured-composer .structured-cancel {
  position: relative;
  width: 40px;
  padding: 0;
  border-color: color-mix(in oklab, var(--danger) 35%, var(--border));
  color: var(--danger);
}

.structured-composer .structured-cancel:hover {
  background: var(--danger-tint);
}

.structured-cancel-stop {
  width: 16px;
  height: 16px;
}

.structured-cancel-spinner {
  position: absolute;
  inset: 4px;
  width: auto;
  height: auto;
  animation: cancel-spin 0.8s linear infinite;
}

@keyframes cancel-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 520px) {
  /* One row cannot hold a draft plus three controls at phone width — the
     draft gets a line of its own and the controls drop below it. */
  .structured-composer {
    flex-wrap: wrap;
    justify-content: flex-end;
    padding-left: var(--sp-2);
    padding-right: var(--sp-2);
  }

  /* `order` keeps the draft on the first line: without it the attach button,
     which precedes it in the DOM, wraps onto a line of its own. */
  .structured-input-wrap {
    flex: 1 1 100%;
    order: -1;
  }

  .structured-composer .structured-config {
    margin-right: auto;
  }

  .structured-config-menu {
    left: 0;
    right: auto;
  }
}

.structured-command-menu {
  position: absolute;
  z-index: var(--z-sticky);
  right: 0;
  bottom: calc(100% + var(--sp-2));
  left: 0;
  max-height: min(42vh, 320px);
  overflow-y: auto;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  background: var(--surface);
  box-shadow: var(--shadow-2);
}

.structured-command-menu[hidden] {
  display: none;
}

.structured-command-option {
  min-height: var(--tap);
  padding: var(--sp-2) var(--sp-3);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.structured-command-option:last-child {
  border-bottom: 0;
}

.structured-command-option:hover,
.structured-command-option[aria-selected="true"] {
  background: var(--accent-tint);
}

.structured-command-title {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  min-width: 0;
}

.structured-command-name {
  flex: 0 0 auto;
  color: var(--ink);
  font-weight: 600;
}

.structured-command-hint,
.structured-command-description {
  overflow: hidden;
  color: var(--muted);
  font-size: var(--fs-11);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.structured-command-hint {
  min-width: 0;
}

.structured-command-description {
  margin-top: var(--sp-1);
}

.structured-input:focus {
  outline: none;
  box-shadow: none;
}

.structured-input:disabled {
  color: var(--faint);
  background: transparent;
}

/* `.btn` sets `display: inline-flex`, which outranks the UA sheet's
   `[hidden]` — restate it explicitly (same pitfall as `.st-tool-out`). */
.structured-cancel[hidden] {
  display: none;
}

.structured-send[hidden] {
  display: none;
}

.structured-error {
  margin: 0 var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  background: var(--danger-tint);
  color: var(--danger);
  font-size: var(--fs-12);
  border-radius: var(--r-2);
}

@media (prefers-reduced-motion: reduce) {
  .act,
  .st-copyable,
  .st-copyable::after,
  .st-disclosure,
  .st-tool-head,
  .st-tool-group-glyph {
    transition-duration: 0.01ms;
  }

  .st-row-enter {
    animation: none;
  }

  .structured-activity-pulse {
    animation: none;
  }
}

/* ---------- modal ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: oklch(0.12 0.01 256 / 0.6);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
  z-index: var(--z-modal);
  animation: fade var(--dur) var(--ease-out);
}

@media (min-width: 600px) {
  .modal-backdrop {
    align-items: center;
    padding: var(--sp-6);
  }
}

.modal {
  background: var(--surface);
  border-radius: var(--r-3) var(--r-3) 0 0;
  border: 1px solid var(--border);
  width: 100%;
  max-width: 560px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-2);
  animation: sheet-up var(--dur-slow) var(--ease-out);
}

@media (min-width: 600px) {
  .modal {
    border-radius: var(--r-3);
    animation: pop var(--dur) var(--ease-out);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3);
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin: 0;
  font-size: var(--fs-15);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.modal-header h2::before {
  content: "+";
  color: var(--accent);
  font-weight: 700;
}

/* The form is the modal's scrolling body: it must be allowed to shrink below
   its content height for `max-height` on the dialog to bite. */
.modal .spawn-form {
  min-height: 0;
}

/* Mobile: the spawn form is the tallest dialog we have, so it takes the whole
   screen and lays out as one flex column — header, scrolling body, actions
   pinned to the bottom edge. Below the fold is where the Submit button used to
   hide. */
@media (max-width: 599px) {
  .modal.spawn-modal {
    height: 100dvh;
    max-height: none;
    border: 0;
    border-radius: 0;
  }

  .spawn-modal .spawn-form {
    flex: 1 1 auto;
    padding-bottom: 0;
  }

  /* One scroll box, not four: the pickers' own caps stack scrollable regions
     inside a screen that is already short. Let them grow and let the form
     scroll. */
  .spawn-modal .picker,
  .spawn-modal .picker.projects,
  .spawn-modal .picker.wt-choices {
    max-height: none;
    overflow-y: visible;
  }

  .spawn-modal .form-actions {
    margin-top: auto;
    padding-bottom: calc(var(--sp-2) + env(safe-area-inset-bottom, 0px));
    box-shadow: 0 -8px 12px -8px oklch(0 0 0 / 0.5);
  }

  .spawn-modal .form-actions .btn {
    flex: 1 1 0;
    justify-content: center;
    min-height: 44px;
  }
}

/* ---------- forms ---------- */

.spawn-form {
  width: 100%;
  max-width: 60ch;
  margin: 0 auto;
  padding: var(--sp-3);
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.spawn-form label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: var(--fs-12);
  color: var(--muted);
  letter-spacing: 0.01em;
}

.spawn-form label.row-inline {
  flex-direction: row;
  align-items: center;
  gap: var(--sp-2);
  color: var(--ink);
  font-size: var(--fs-14);
  cursor: pointer;
}

.spawn-form input[type="text"],
.spawn-form input[type="search"],
.spawn-form select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  padding: 10px var(--sp-3);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  width: 100%;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.spawn-form input[type="text"]:hover,
.spawn-form select:hover {
  border-color: var(--border-strong);
}

.spawn-form input[type="text"]:focus,
.spawn-form input[type="search"]:focus,
.spawn-form select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--accent-tint);
}

.spawn-form input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  flex: 0 0 auto;
}

.advanced {
  display: flex;
  flex-direction: column;
}

.advanced .wt-toggle {
  border-top: 1px solid var(--border);
  border-radius: 0;
  padding-top: var(--sp-2);
  padding-bottom: var(--sp-2);
}

.wt-summary {
  color: var(--muted);
  font-size: var(--fs-12);
}

.wt-collapsible {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-2) 0 var(--sp-1);
}

.wt-collapsible[hidden] {
  display: none;
}

/* Worktree sub-group: left accent border when expanded, visually nested. */
.adv-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding-left: var(--sp-3);
  border-left: 2px solid var(--border);
  margin-top: var(--sp-1);
}

.adv-group:has(input[name="worktree_enabled"]:checked) {
  border-left-color: var(--accent);
}

.form-error {
  color: var(--danger);
  margin: 0;
  font-size: var(--fs-13);
  min-height: 1.2em;
}

.form-error:not(:empty) {
  padding: var(--sp-2) var(--sp-3);
  background: var(--danger-tint);
  border-radius: var(--r-2);
}

/* ---------- spawn form: tiles + recents picker (#27) ---------- */

.spawn-form .field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.field-label {
  font-size: var(--fs-13);
  color: var(--ink);
}

/* Harness cards: the first decision in the spawn form — which tool runs. */
.harness-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--sp-2);
}

.harness-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  color: var(--ink);
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.harness-card:hover {
  border-color: var(--border-strong);
  background: var(--surface-3);
}

.harness-card.is-active {
  border-color: var(--accent);
  background: var(--accent-tint);
}

.harness-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--muted);
}

.harness-card.is-active .harness-icon {
  color: var(--ink);
}

.harness-icon .tool-icon {
  display: block;
}

.harness-label {
  font-size: var(--fs-13);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

/* The "Custom…" card is an escape hatch, not a peer tool — dashed border
   and subdued color separate it from the named harnesses. */
.harness-custom {
  border-style: dashed;
  color: var(--muted);
}

.harness-custom .harness-label {
  font-weight: 500;
}

/* Working-directory picker (#95). Two steps: a grid of project boxes, then the
   picked project's worktree choices. Stale beyond 7 days dims but stays
   selectable. */
.picker {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  max-height: 220px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.project-filter {
  width: 100%;
}

/* `display` from `.field`/`.raw-wrap` outranks the UA sheet's `[hidden]`, so
   step two and the raw-cwd hatch stayed visible while hidden. */
.wt-step[hidden],
.raw-wrap[hidden] {
  display: none;
}

.picker.projects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-content: start;
  gap: var(--sp-2);
  max-height: 300px;
  padding: 1px;
}

.project-box {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  padding: var(--sp-2) var(--sp-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  color: var(--ink);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.project-box:hover {
  border-color: var(--border-strong);
}

.project-box.is-active {
  border-color: var(--accent);
  background: var(--accent-tint);
}

.project-box.is-stale {
  opacity: 0.55;
}

.project-name {
  font-size: var(--fs-13);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* The whole path, never abbreviated — it is what tells two projects sharing a
   basename apart. Wraps rather than truncating so none of it is hidden. */
.project-path {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.35;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.project-other {
  align-self: flex-start;
  padding: 4px 0;
  min-height: 30px;
  background: none;
  border: 0;
  color: var(--muted);
  font-family: inherit;
  font-size: var(--fs-13);
  font-style: italic;
  text-align: left;
  cursor: pointer;
}

.project-other:hover {
  color: var(--ink);
}

/* Step two: "+ new" (create one) or an existing worktree (run in it). */
.picker.wt-choices {
  max-height: 200px;
}

.wt-choice {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
  min-height: 32px;
  padding: 6px var(--sp-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  color: var(--ink);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.wt-choice:hover {
  border-color: var(--border-strong);
}

.wt-choice.is-active {
  border-color: var(--accent);
  background: var(--accent-tint);
}

.wt-choice-name {
  flex: 0 0 auto;
  font-size: var(--fs-13);
  font-weight: 600;
  white-space: nowrap;
}

.wt-choice-new .wt-choice-name {
  font-family: var(--font-mono);
  color: var(--accent);
}

.wt-choice-sub {
  min-width: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.35;
  color: var(--muted);
  text-align: right;
  overflow-wrap: anywhere;
}

.picker-empty {
  margin: 0;
  padding: 6px var(--sp-3);
  color: var(--faint);
  font-size: var(--fs-13);
}

.picker-loading {
  margin: 0;
  padding: 6px var(--sp-3);
  color: var(--faint);
  font-size: var(--fs-13);
}

.raw-wrap {
  display: flex;
}

.raw-input {
  width: 100%;
}

/* Worktree-by-branch: inferred repo line + inline hint. */
.wt-hint {
  margin: 0;
  font-size: var(--fs-12);
  color: var(--muted);
}

.wt-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.wt-repo {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--muted);
}

/* New-vs-existing branch source (#61). */
.wt-mode {
  display: flex;
  gap: var(--sp-4);
}

.branch-select {
  width: 100%;
}

/* Generated-name field with a reroll button. */
.name-row {
  display: flex;
  gap: var(--sp-2);
  align-items: center;
}

.name-row input {
  flex: 1 1 auto;
}

.form-actions {
  display: flex;
  gap: var(--sp-2);
  justify-content: flex-end;
  margin-top: var(--sp-2);
  position: sticky;
  bottom: 0;
  padding: var(--sp-2) 0;
  background: var(--surface);
  z-index: 1;
}

.reroll {
  flex: 0 0 auto;
}

/* ---------- directory autocomplete (NAP-329) ---------- */

.dir-ac {
  position: fixed;
  z-index: var(--z-toast); /* above the modal it completes within */
  margin: 0;
  padding: var(--sp-1);
  list-style: none;
  max-height: 280px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  box-shadow: var(--shadow-2);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.dir-ac-item {
  padding: 6px var(--sp-2);
  border-radius: var(--r-1);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dir-ac-item:hover {
  background: var(--surface-2);
}

.dir-ac-item.is-active {
  background: var(--accent-tint);
  color: var(--ink);
}

.dir-ac-more {
  padding: 6px var(--sp-2);
  color: var(--faint);
  font-size: var(--fs-12);
  font-style: italic;
}

/* ---------- not-found ---------- */

.not-found {
  margin: auto;
  padding: var(--sp-5) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  align-items: center;
  text-align: center;
}

.not-found h1 {
  margin: 0;
  font-size: var(--fs-20);
}

.not-found p {
  margin: 0;
  color: var(--muted);
}

/* ---------- theme toggle ---------- */

.theme-toggle {
  position: relative;
  overflow: hidden;
}

.theme-toggle .sun,
.theme-toggle .moon {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transition:
    transform var(--dur) var(--ease-out),
    opacity var(--dur) var(--ease-out);
}

.theme-toggle .moon {
  transform: translateY(0);
  opacity: 1;
}

.theme-toggle .sun {
  transform: translateY(120%);
  opacity: 0;
}

:root[data-theme="light"] .theme-toggle .moon {
  transform: translateY(-120%);
  opacity: 0;
}

:root[data-theme="light"] .theme-toggle .sun {
  transform: translateY(0);
  opacity: 1;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-toggle .moon {
    transform: translateY(-120%);
    opacity: 0;
  }
  :root:not([data-theme]) .theme-toggle .sun {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ---------- keyframes ---------- */

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

@keyframes ripple {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  70%,
  100% {
    transform: scale(2.4);
    opacity: 0;
  }
}

@keyframes fade {
  from {
    opacity: 0;
  }
}

@keyframes sheet-up {
  from {
    transform: translateY(16px);
    opacity: 0;
  }
}

@keyframes pop {
  from {
    transform: scale(0.98);
    opacity: 0;
  }
}

@keyframes blink {
  0%,
  50% {
    opacity: 1;
  }
  50.01%,
  100% {
    opacity: 0;
  }
}

@keyframes rail-flash {
  0%,
  100% {
    opacity: 1;
  }
  15% {
    opacity: 0.25;
  }
  30% {
    opacity: 1;
  }
  45% {
    opacity: 0.25;
  }
  60% {
    opacity: 1;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 520px) {
  .brand h1 {
    font-size: var(--fs-15);
  }
  .catalog-actions {
    flex: 1 1 100%;
    flex-wrap: wrap;
    justify-content: stretch;
  }
  .search {
    flex: 1 1 100%;
    max-width: none;
    order: -1;
  }
  .tree-leaf .leaf-actions {
    opacity: 1;
  }
}

/* Mobile: no room for a split, so show one pane at a time. The catalog route
   shows the session list full-width; opening a session swaps to the terminal
   (its header's ← returns to the list). The connection still lives in the pool,
   so returning to it is instant. */
@media (max-width: 859px) {
  .app-shell[data-route="catalog"] > .content {
    display: none;
  }
  .app-shell:not([data-route="catalog"]) > .sidebar {
    display: none;
  }
  .sidebar {
    border-right: 0;
  }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .brand-dot,
  [data-status="running"] .leaf-status::before,
  .tally-live::before,
  .activity-rail {
    animation: none;
  }
}

/* ---------- debug HUD (#20) ---------- */

.debug-hud {
  position: fixed;
  right: var(--sp-3);
  bottom: var(--sp-3);
  z-index: var(--z-toast);
  min-width: 180px;
  max-width: 280px;
  padding: var(--sp-2) var(--sp-3);
  background: color-mix(in oklab, var(--surface) 88%, transparent);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  box-shadow: var(--shadow-2);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.5;
  /* Diagnostics only — never intercept clicks on the terminal beneath it. */
  pointer-events: none;
  user-select: none;
}

.hud-head {
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 2px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hud-row {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
}

.hud-k {
  color: var(--muted);
}

.hud-v {
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hud-v[data-activity="Active"] {
  color: var(--accent);
}

.hud-v[data-activity="AwaitingInput"] {
  color: var(--warn);
}

.hud-v[data-activity="Idle"] {
  color: var(--muted);
}

/* =========================================================================
   multi-view (#30 splits, #31 tabs, #33 highlights)
   Tabs of nested split trees; each session leaf hosts a live .attach. The
   focused pane reads at full strength, the rest recede — and the sidebar row
   for the focused session matches it (loud), open-elsewhere rows stay quiet.
   ========================================================================= */
.mv {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
/* Mobile: the tab bar is a second navigation surface — collapse it (a floating
   ☰ inside the pane keeps the sidebar drawer reachable). */
.mv-mobile-solo > .mv-tabs,
.mv-solo-tab > .mv-tabs {
  display: none;
}

/* tab bar */
.mv-tabs {
  display: flex;
  align-items: stretch;
  gap: 2px;
  height: var(--bar-h);
  padding: 0 var(--sp-2);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
  flex: none;
}
.mv-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-3);
  align-self: center;
  height: calc(var(--bar-h) - 8px);
  border-radius: var(--r-1);
  font: 500 var(--fs-12) / 1 var(--font-mono);
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.mv-tab:hover {
  background: var(--surface-2);
  color: var(--ink);
}
.mv-tab.is-active {
  background: var(--surface-3);
  color: var(--ink);
  border-color: var(--border);
}
.mv-tab-close {
  opacity: 0.5;
  font-size: var(--fs-13);
  line-height: 1;
}
.mv-tab-close:hover {
  opacity: 1;
  color: var(--danger);
}
.mv-tab-add {
  align-self: center;
  width: 24px;
  height: 24px;
  border-radius: var(--r-1);
  color: var(--muted);
  font-size: var(--fs-15);
  background: transparent;
  border: none;
  cursor: pointer;
}
.mv-tab-add:hover {
  background: var(--surface-2);
  color: var(--ink);
}

/* Preview (docs/PREVIEW.md): the content pane is showing a session the
   operator only highlighted, so it reads as provisional — the preview hue on
   the pane's titlebar, a dashed tab, a dashed inset ring on the canvas — and
   reverts when the highlight moves. The hue is deliberately not the accent:
   the accent means "this is what you picked", which a preview is not. */
.mv-tab.is-preview {
  border-style: dashed;
  border-color: var(--preview-ring);
  color: var(--preview);
  font-style: italic;
}
.mv.mv-previewing .mv-canvas::before {
  content: "preview";
  position: absolute;
  top: var(--sp-2);
  right: var(--sp-3);
  z-index: var(--z-sticky);
  padding: 1px var(--sp-2);
  border-radius: var(--r-1);
  font: 500 var(--fs-11) / 1.5 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--preview-ink);
  background: var(--preview);
  opacity: 0.85;
  pointer-events: none;
}
.mv.mv-previewing .mv-canvas::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px dashed var(--preview-ring);
  border-radius: var(--r-1);
  z-index: var(--z-sticky);
}

/* canvas + welcome */
.mv-canvas {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  background: var(--bg);
}
.mv-canvas > .mv-split,
.mv-canvas > .mv-pane {
  position: absolute;
  inset: 0;
}
.mv-canvas > .content-welcome {
  position: absolute;
  inset: 0;
  margin: auto;
  height: max-content;
}

/* splits + dividers */
.mv-split {
  display: flex;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
}
.mv-split.row {
  flex-direction: row;
}
.mv-split.col {
  flex-direction: column;
}
.mv-split > .mv-slot {
  min-width: 0;
  min-height: 0;
  display: flex;
}
.mv-split > .mv-slot > * {
  flex: 1;
  min-width: 0;
  min-height: 0;
}
.mv-divider {
  flex: none;
  position: relative;
  z-index: 2;
}
.mv-split.row > .mv-divider {
  width: 6px;
  cursor: col-resize;
}
.mv-split.col > .mv-divider {
  height: 6px;
  cursor: row-resize;
}
.mv-divider::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--border);
}
.mv-split.row > .mv-divider::after {
  width: 1px;
  height: 100%;
}
.mv-split.col > .mv-divider::after {
  height: 1px;
  width: 100%;
}
.mv-divider:hover::after,
.mv-divider.is-dragging::after {
  background: var(--accent);
}

/* a single pane = wrapper around a live .attach (or an empty placeholder) */
.mv-pane {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  overflow: hidden;
  background: var(--term-bg);
}
.mv-pane-host {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
}
/* Whatever body the pane holds — a terminal, a transcript, the empty state —
   fills it. (Was `> .attach`, the class the vanilla attach view carried.) */
.mv-pane-host > * {
  flex: 1;
  min-width: 0;
  min-height: 0;
}
/* focused pane: titlebar tints instead of a ring, full strength */
.mv-pane.is-focused .attach-header {
  background: color-mix(in oklab, var(--accent) 14%, var(--surface));
}
/* unfocused panes recede so the eye finds the live one */
.mv-pane:not(.is-focused) {
  border-color: color-mix(in oklab, var(--border) 70%, transparent);
}
.mv-pane:not(.is-focused) .attach-body {
  opacity: 0.45;
}
.mv-pane:not(.is-focused) .attach-header {
  opacity: 0.7;
}
/* The previewed pane's titlebar carries the preview hue, so the chip is not the
   only thing saying the pane is provisional — and so it is never mistaken for
   the accent tint of the pane the operator actually focused. It keeps full
   strength even though a preview never takes focus. */
.mv-pane.is-preview .attach-header,
.mv-pane.is-preview.is-focused .attach-header {
  background: color-mix(in oklab, var(--preview) 34%, var(--surface));
  opacity: 1;
}
/* A pane with no session yet: a quiet hint rather than blank terminal black. */
.mv-pane-empty {
  flex: 1;
  display: grid;
  place-items: center;
  padding: var(--sp-3);
  text-align: center;
  color: var(--faint);
  font-size: var(--fs-13);
}

/* pane tools cluster (disconnect / split / close), top-right corner. The attach
   header's own disconnect button is hidden — ⏻ lives here as the leftmost tool. */
.mv-pane-tools {
  position: absolute;
  top: 6px;
  right: 4px;
  z-index: 4;
  display: flex;
  gap: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.mv-pane .attach-header .disconnect {
  display: none;
}
.mv-tool-off:hover {
  background: var(--danger-tint);
  color: var(--danger);
}
.mv-pane:hover .mv-pane-tools {
  opacity: 1;
  pointer-events: auto;
}
/* The tools share the header's right corner with the connection-state label, so
   hide that label while hovering (tools showing) — no overlap. */
.mv-pane:hover .attach-state {
  visibility: hidden;
}
/* "connected" is noise — a streaming terminal already shows it's connected. Only
   the transient/meaningful states surface (connecting/error); a closed session
   auto-closes its pane, so "closed" is rarely seen. */
.attach-state[data-state="open"] {
  display: none;
}
.mv-tool {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: var(--r-1);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--muted);
  font-size: var(--fs-12);
  cursor: pointer;
}
.mv-tool:hover {
  background: var(--surface-3);
  color: var(--ink);
}

/* drag-to-dock (issue #32): a cursor-following ghost + the target pane's drop
   zone highlight. */
.mv-drag-ghost {
  position: fixed;
  z-index: var(--z-toast);
  pointer-events: none;
  padding: 2px 10px;
  border-radius: var(--r-2);
  background: var(--surface-3);
  border: 1px solid var(--accent);
  color: var(--ink);
  font: 600 var(--fs-12) / 1.4 var(--font-mono);
  box-shadow: var(--shadow-2);
}
.mv-dock-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}
.mv-dock-zone {
  background: color-mix(in oklab, var(--accent) 30%, transparent);
  border: 1px solid var(--accent);
  border-radius: var(--r-1);
}

/* =========================================================================
   multi-view mobile (#35): below 860px only the focused pane is shown — no tab
   bar, no pane switcher; the sidebar drawer (☰) is the navigation.
   ========================================================================= */
.mv-backdrop {
  display: none;
}

.mv-mobile {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
/* One pane fills the screen: no border, radius, or focus ring to box it in. */
.mv-mobile > .mv-pane,
.mv-mobile > .mv-pane.is-focused {
  border: none;
  border-radius: 0;
  box-shadow: none;
}
.mv-mobile > .mv-pane {
  flex: 1;
  min-height: 0;
}

@media (max-width: 859px) {
  /* sidebar → off-canvas drawer (override the route-based show/hide) */
  .app-shell > .sidebar {
    display: flex !important;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(82vw, 320px);
    z-index: var(--z-modal);
    transform: translateX(-100%);
    transition: transform var(--dur) var(--ease-out);
    box-shadow: var(--shadow-2);
    border-right: 1px solid var(--border);
  }
  .app-shell.drawer-open > .sidebar {
    transform: none;
  }
  /* content always visible (the layout/projection); drawer floats over it */
  .app-shell[data-route="catalog"] > .content,
  .app-shell > .content {
    display: flex;
  }
  .app-shell.drawer-open > .mv-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: var(--z-backdrop);
    background: oklch(0 0 0 / 0.5);
  }
}