/* Bounds design system: tokens, themes and components, ported from docs/design/bounds-design-system.css. */
/*====*/
:root, [data-theme="light"] {
  --paper: #faf8f4;
  --paper-sunken: #f1eee8;
  --surface: #ffffff;
  --layer: rgba(250, 248, 244, 0.86);
  --seg-thumb: #ffffff;
  --ink: #1e1c19;
  --ink-2: #5f5a52;
  --ink-3: #8c867c;
  --hairline: #e6e1d8;
  --control-border: #868076;
  --fill: rgba(30, 28, 25, 0.06);
  --fill-strong: rgba(30, 28, 25, 0.10);
  --primary: #1e1c19;
  --primary-hover: #38342f;
  --on-primary: #faf8f4;
  --accent: #2e5878;
  --accent-soft: #e4ebf1;
  --on-accent: #ffffff;
  --danger: #a3362b;
  --on-danger: #ffffff;
  --band: rgba(30, 28, 25, 0.045);
  --band-flash: rgba(46, 88, 120, 0.14);
  --fade-edge: rgba(250, 248, 244, 0.36);
  --selection: #cdd5d9;
  --scrim: rgba(30, 26, 20, 0.28);
  --toast: #2a2723;
  --hud: rgba(42, 39, 35, 0.88);
  --on-toast: #f6f3ee;
  --elev-1: 0 0 0 0.5px rgba(30, 28, 25, 0.06), 0 2px 6px rgba(30, 28, 25, 0.05), 0 8px 24px rgba(30, 28, 25, 0.06);
  --elev-2: 0 0 0 0.5px rgba(30, 28, 25, 0.08), 0 4px 12px rgba(30, 28, 25, 0.07), 0 16px 40px rgba(30, 28, 25, 0.10);
  --elev-3: 0 0 0 0.5px rgba(30, 28, 25, 0.08), 0 8px 24px rgba(30, 28, 25, 0.10), 0 32px 72px rgba(30, 28, 25, 0.16);
}
[data-theme="sepia"] {
  --paper: #f3ead6;
  --paper-sunken: #ebe0c7;
  --surface: #fbf6ea;
  --layer: rgba(243, 234, 214, 0.86);
  --seg-thumb: #fdf9f0;
  --ink: #3a2e21;
  --ink-2: #685a47;
  --ink-3: #8f7f68;
  --hairline: #e0d2b5;
  --control-border: #85765f;
  --fill: rgba(58, 46, 33, 0.07);
  --fill-strong: rgba(58, 46, 33, 0.12);
  --primary: #3a2e21;
  --primary-hover: #4f4030;
  --on-primary: #f9f2e3;
  --accent: #8a4f22;
  --accent-soft: #ecdcc4;
  --on-accent: #fffaf0;
  --danger: #9c3324;
  --on-danger: #fffaf0;
  --band: rgba(58, 46, 33, 0.06);
  --band-flash: rgba(138, 79, 34, 0.14);
  --fade-edge: rgba(243, 234, 214, 0.28);
  --selection: #dcc8ae;
  --scrim: rgba(48, 34, 18, 0.28);
  --toast: #3a2e21;
  --hud: rgba(58, 46, 33, 0.88);
  --on-toast: #f7eedb;
  --elev-1: 0 0 0 0.5px rgba(58, 46, 33, 0.08), 0 2px 6px rgba(58, 46, 33, 0.06), 0 8px 24px rgba(58, 46, 33, 0.07);
  --elev-2: 0 0 0 0.5px rgba(58, 46, 33, 0.10), 0 4px 12px rgba(58, 46, 33, 0.08), 0 16px 40px rgba(58, 46, 33, 0.12);
  --elev-3: 0 0 0 0.5px rgba(58, 46, 33, 0.10), 0 8px 24px rgba(58, 46, 33, 0.10), 0 32px 72px rgba(58, 46, 33, 0.18);
}
[data-theme="dark"] {
  --paper: #151413;
  --paper-sunken: #1c1b19;
  --surface: #211f1d;
  --layer: rgba(30, 28, 26, 0.84);
  --seg-thumb: #3a3733;
  --ink: #e4dfd6;
  --ink-2: #a39d93;
  --ink-3: #7a746b;
  --hairline: #2e2b28;
  --control-border: #6f6a62;
  --fill: rgba(228, 223, 214, 0.08);
  --fill-strong: rgba(228, 223, 214, 0.13);
  --primary: #e4dfd6;
  --primary-hover: #f3efe8;
  --on-primary: #151413;
  --accent: #94b7d4;
  --accent-soft: #1f2b35;
  --on-accent: #0f161c;
  --danger: #e58a7c;
  --on-danger: #1d0f0c;
  --band: rgba(228, 223, 214, 0.055);
  --band-flash: rgba(148, 183, 212, 0.16);
  --fade-edge: rgba(21, 20, 19, 0.44);
  --selection: #31383d;
  --scrim: rgba(0, 0, 0, 0.55);
  --toast: #3a3733;
  --hud: rgba(58, 55, 51, 0.9);
  --on-toast: #efebe4;
  --elev-1: 0 0 0 0.5px rgba(255, 255, 255, 0.07), 0 2px 6px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  --elev-2: 0 0 0 0.5px rgba(255, 255, 255, 0.08), 0 4px 12px rgba(0, 0, 0, 0.35), 0 16px 40px rgba(0, 0, 0, 0.45);
  --elev-3: 0 0 0 0.5px rgba(255, 255, 255, 0.09), 0 8px 24px rgba(0, 0, 0, 0.45), 0 32px 72px rgba(0, 0, 0, 0.6);
}
:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;
  --target-min: 2.75rem;
  --play-size: 3.5rem;
  --header-height: 3.25rem;
  --bar-height: 3.5rem;
  --page-width: 42rem;
  --auth-width: 22rem;
  --popover-width: 20rem;
  --gutter-phone: 1.25rem;
  --gutter-wide: 2rem;
  --read-measure: 34em;
  --read-leading: 1.55;
  --read-line: 38%;
  --read-indent: 1.25em;
  --read-step-1: 0.9375rem;
  --read-step-2: 1.0625rem;
  --read-step-3: 1.1875rem;
  --read-step-4: 1.3125rem;
  --read-step-5: 1.4375rem;
  --read-step-6: 1.625rem;
  --read-step-7: 1.8125rem;
  --icon-sm: 1rem;
  --icon-md: 1.25rem;
  --icon-lg: 1.5rem;
  --z-text: 0;
  --z-band: 1;
  --z-pill: 2;
  --z-chrome: 3;
  --z-popover: 4;
  --z-card: 5;
  --z-scrim: 6;
  --z-dialog: 7;
  --z-toast: 8;
  --z-skip: 9;
  --font-serif: "Literata", Georgia, "Times New Roman", serif;
  --font-sans: "Atkinson Hyperlegible Next", "Atkinson Hyperlegible", system-ui, sans-serif;
  --font-mono: "Atkinson Hyperlegible Mono", ui-monospace, Menlo, monospace;
}

/*====*/
/* Bounds components. Hand-written CSS on the tokens in tokens.css. No framework.
   Every class is prefixed b-. Themes switch with [data-theme] on <html>. */

/* ---------- Motion (not in tokens.json: the token page has no motion family) ---------- */
:root {
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);      /* arrivals: popovers, cards, controls in */
  --ease-in: cubic-bezier(0.55, 0.06, 0.68, 0.19);    /* departures: sheets, toasts out */
  --ease-in-out: cubic-bezier(0.45, 0, 0.25, 1);      /* controls fading out while text starts */
  --ease-follow: cubic-bezier(0.4, 0, 0.2, 1);        /* CSS stand-in for the engine's play spring */
  --dur-tap: 100ms;
  --dur-stop: 150ms;
  --dur-ui: 240ms;
  --dur-ui-exit: 180ms;
  --dur-sheet: 360ms;
  --dur-chrome-out: 400ms;
  --dur-card: 480ms;
  --dur-flash: 900ms;
  --dur-play: 1000ms;
  --dur-hud-dwell: 1200ms;
  --dur-chapter: 1500ms;
  --dur-toast-dwell: 4000ms;
  --dur-jump-out: 90ms;
  --dur-jump-in: 180ms;
  --dur-rm-step: 160ms;
  --dur-indeterminate: 1600ms;
  --gutter: var(--gutter-phone);
  --read-size: var(--read-step-3);
  --read-wght: 400;
  --read-wght-strong: 620;
  color-scheme: light;
}
[data-theme="sepia"] { color-scheme: light; }
[data-theme="dark"] { color-scheme: dark; --read-wght: 370; --read-wght-strong: 580; }
@media (min-width: 600px) { :root { --gutter: var(--gutter-wide); } }

/* ---------- Base ---------- */
/* Taps never zoom: iOS Safari reads two quick taps (play/pause, ± speed) as a double-tap
   zoom. `manipulation` turns that off but keeps panning and pinch-zoom. Every element gets
   it (no specificity, so a later rule can still override) because iOS checks the element
   tapped, not just the root. Text fields stay ≥16px so focusing them doesn't zoom either. */
:where(.b-root, .b-root *) { touch-action: manipulation; }
.b-root, .b-root body { margin: 0; }
.b-root {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.375rem;
  letter-spacing: 0.003em;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
}
.b-root *, .b-root *::before, .b-root *::after { box-sizing: border-box; }
.b-root :focus { outline: none; }
.b-root :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.b-icon { display: block; flex: none; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.b-icon .thin { stroke-width: 1.2; }
.b-num { font-variant-numeric: tabular-nums lining-nums; }
.b-visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.b-skip {
  position: absolute; z-index: var(--z-skip); top: var(--space-2); left: var(--space-2);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
  background: var(--primary); color: var(--on-primary); font-weight: 600; text-decoration: none;
  transform: translateY(-200%);
}
.b-skip:focus-visible { transform: none; }

/* ---------- Buttons ---------- */
.b-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: var(--target-min); padding: 0 var(--space-5);
  border: 0; border-radius: var(--radius-sm);
  font: 600 0.9375rem/1.25rem var(--font-sans); letter-spacing: 0.003em;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color var(--dur-stop) var(--ease-out), color var(--dur-stop) var(--ease-out), transform var(--dur-tap) var(--ease-out);
}
.b-btn:active:not(:disabled) { transform: scale(0.985); }
.b-btn--primary { background: var(--primary); color: var(--on-primary); }
.b-btn--primary:hover:not(:disabled) { background: var(--primary-hover); }
.b-btn--secondary { background: var(--fill); color: var(--ink); }
.b-btn--secondary:hover:not(:disabled) { background: var(--fill-strong); }
.b-btn--quiet { background: transparent; color: var(--accent); padding: 0 var(--space-2); }
.b-btn--quiet:hover:not(:disabled) { background: var(--fill); }
.b-btn--danger { background: var(--danger); color: var(--on-danger); }
.b-btn--danger:hover:not(:disabled) { filter: brightness(0.94); }
.b-btn--danger-quiet { background: transparent; color: var(--danger); padding: 0 var(--space-2); }
.b-btn--danger-quiet:hover:not(:disabled) { background: var(--fill); }
.b-btn--block { width: 100%; }
.b-btn--sm { min-height: 2.25rem; padding: 0 var(--space-4); font-size: 0.875rem; }
.b-btn:disabled { background: var(--fill); color: var(--ink-3); cursor: default; }
.b-btn--quiet:disabled, .b-btn--danger-quiet:disabled { background: transparent; }
.b-btn.is-busy { cursor: progress; }
.b-btn.is-busy .b-icon { animation: b-spin 1s linear infinite; }
@keyframes b-spin { to { transform: rotate(1turn); } }

.b-icon-btn {
  display: inline-grid; place-items: center; flex: none;
  width: var(--target-min); height: var(--target-min); padding: 0;
  border: 0; border-radius: var(--radius-pill);
  background: transparent; color: var(--ink-2); cursor: pointer;
  transition: background-color var(--dur-stop) var(--ease-out), color var(--dur-stop) var(--ease-out);
}
.b-icon-btn:hover:not(:disabled), .b-icon-btn[aria-expanded="true"] { background: var(--fill); color: var(--ink); }
.b-icon-btn:active:not(:disabled) { background: var(--fill-strong); }
.b-icon-btn:disabled { color: var(--ink-3); cursor: default; }
.b-icon-btn--sm { width: 2.25rem; height: 2.25rem; }

.b-play {
  display: inline-grid; place-items: center; flex: none;
  width: var(--play-size); height: var(--play-size); padding: 0;
  border: 0; border-radius: var(--radius-pill);
  background: var(--primary); color: var(--on-primary); cursor: pointer;
  transition: background-color var(--dur-stop) var(--ease-out), transform var(--dur-tap) var(--ease-out);
}
.b-play:hover { background: var(--primary-hover); }
.b-play:active { transform: scale(0.96); }
.b-play .b-icon { width: var(--icon-lg); height: var(--icon-lg); transform: translateX(1.5px); }
.b-play--sm { width: 2.75rem; height: 2.75rem; }
.b-play--sm .b-icon { width: var(--icon-md); height: var(--icon-md); transform: translateX(1px); }

.b-link { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.2em; text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.b-link:hover { text-decoration-color: currentColor; }

.b-kbd {
  display: inline-grid; place-items: center; min-width: 1.5rem; height: 1.5rem; padding: 0 0.375rem;
  border-radius: var(--radius-xs); background: var(--fill); color: var(--ink);
  box-shadow: inset 0 -1px 0 var(--fill-strong);
  font: 500 0.75rem/1 var(--font-mono); letter-spacing: 0;
}

/* ---------- Fields ---------- */
.b-field { display: grid; gap: var(--space-2); }
.b-label { font: 600 0.875rem/1.25rem var(--font-sans); color: var(--ink); }
.b-label .b-opt { font-weight: 400; color: var(--ink-2); }
.b-input, .b-textarea {
  width: 100%; min-height: var(--target-min); padding: 0.625rem 0.875rem;
  border: 1px solid var(--control-border); border-radius: var(--radius-sm);
  background: var(--paper-sunken); color: var(--ink);
  font: 400 max(16px, 1.0625rem)/1.5rem var(--font-sans); /* iOS zooms on focus below 16px */
  transition: border-color var(--dur-stop) var(--ease-out), box-shadow var(--dur-stop) var(--ease-out);
}
.b-input::placeholder, .b-textarea::placeholder { color: var(--ink-2); opacity: 1; }
.b-input:focus, .b-textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); outline: none; }
.b-input[aria-invalid="true"], .b-textarea[aria-invalid="true"] { border-color: var(--danger); }
.b-input[aria-invalid="true"]:focus { box-shadow: 0 0 0 1px var(--danger); }
.b-input:disabled { color: var(--ink-3); }
.b-input--mono { font: 450 max(16px, 1.0625rem)/1.5rem var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; }
.b-textarea { min-height: 14rem; resize: vertical; font: 400 max(16px, 1.0625rem)/1.55 var(--font-serif); font-variant-numeric: oldstyle-nums; }
.b-input-wrap { position: relative; }
.b-input-wrap .b-input { padding-right: 3rem; }
.b-input-wrap .b-icon-btn { position: absolute; right: 0; top: 0; }
.b-hint, .b-error-text { margin: 0; }
.b-hint { font: 450 0.8125rem/1.125rem var(--font-sans); letter-spacing: 0.008em; color: var(--ink-2); }
.b-error-text { display: flex; gap: var(--space-2); font: 500 0.8125rem/1.125rem var(--font-sans); color: var(--danger); }
.b-error-text .b-icon { width: 1rem; height: 1rem; margin-top: 1px; }
.b-field-row { display: flex; justify-content: space-between; gap: var(--space-4); align-items: baseline; }

/* ---------- Segmented control (also the Add text tabs and theme/font pickers) ---------- */
.b-seg {
  display: inline-grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 2px;
  padding: 3px; border-radius: 10px; background: var(--fill);
}
.b-seg--block { display: grid; width: 100%; }
.b-seg__opt {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 2.25rem; padding: 0 var(--space-4); border: 0; border-radius: 7px;
  background: transparent; color: var(--ink-2); cursor: pointer;
  font: 600 0.875rem/1.25rem var(--font-sans); white-space: nowrap;
  transition: background-color var(--dur-ui) var(--ease-out), color var(--dur-ui) var(--ease-out), box-shadow var(--dur-ui) var(--ease-out);
}
.b-seg__opt:hover { color: var(--ink); }
.b-seg__opt[aria-selected="true"], .b-seg__opt[aria-checked="true"] { background: var(--seg-thumb); color: var(--ink); box-shadow: var(--elev-1); }
.b-seg__opt .b-icon { width: 1rem; height: 1rem; }

/* ---------- Slider (log-scale WPM) ---------- */
.b-slider { position: relative; height: var(--target-min); display: flex; align-items: center; --pct: 40%; }
.b-slider input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.b-slider__track { position: relative; width: 100%; height: 4px; border-radius: var(--radius-pill); background: var(--fill-strong); }
.b-slider__fill { position: absolute; inset: 0 auto 0 0; width: var(--pct); border-radius: inherit; background: var(--accent); }
.b-slider__default { position: absolute; top: 50%; width: 2px; height: 10px; margin: -5px 0 0 -1px; border-radius: 1px; background: var(--ink-3); }
.b-slider__thumb {
  position: absolute; top: 50%; left: var(--pct); width: 1.5rem; height: 1.5rem; margin: -0.75rem 0 0 -0.75rem;
  border-radius: 50%; background: var(--seg-thumb); border: 1px solid var(--control-border); box-shadow: var(--elev-1);
  transition: transform var(--dur-stop) var(--ease-out);
}
.b-slider:hover .b-slider__thumb { transform: scale(1.04); }
.b-slider input:focus-visible ~ .b-slider__track .b-slider__thumb { outline: 2px solid var(--accent); outline-offset: 2px; }
.b-slider.is-dragging .b-slider__thumb { transform: scale(1.1); }
.b-slider-scale { display: flex; justify-content: space-between; font: 450 0.75rem/1rem var(--font-sans); color: var(--ink-2); font-variant-numeric: tabular-nums; }

/* ---------- Speed control ---------- */
.b-speed { display: grid; gap: var(--space-3); }
.b-speed__row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-2); }
.b-speed__step {
  display: grid; place-items: center; width: var(--target-min); height: var(--target-min);
  border: 0; border-radius: var(--radius-pill); background: var(--fill); color: var(--ink); cursor: pointer;
  transition: background-color var(--dur-stop) var(--ease-out), transform var(--dur-tap) var(--ease-out);
}
.b-speed__step:hover:not(:disabled) { background: var(--fill-strong); }
.b-speed__step:active:not(:disabled) { transform: scale(0.95); }
.b-speed__step:disabled { color: var(--ink-3); background: transparent; box-shadow: inset 0 0 0 1px var(--hairline); cursor: default; }
.b-speed__value { display: grid; justify-items: center; }
.b-speed__num { font: 520 2.5rem/2.75rem var(--font-sans); letter-spacing: -0.02em; font-variant-numeric: tabular-nums lining-nums; color: var(--ink); }
.b-speed__unit { font: 450 0.8125rem/1.125rem var(--font-sans); color: var(--ink-2); }
.b-speed__source { color: var(--ink-2); }
.b-speed__source b { font-weight: 600; color: var(--accent); }
.b-speed { min-width: 0; }
.b-speed__links { display: grid; justify-items: start; gap: 0; margin: 0 calc(-1 * var(--space-2)); padding-top: var(--space-2); border-top: 1px solid var(--hairline); }
.b-speed__links .b-btn { min-height: 2.25rem; font-size: 0.875rem; }
.b-speed--sheet .b-speed__step { width: 3.5rem; height: 3.5rem; }
.b-speed--sheet .b-speed__num { font-size: 3.25rem; line-height: 3.5rem; }

/* ---------- Popover, menu, sheet, dialog ---------- */
.b-popover {
  width: var(--popover-width); max-width: calc(100vw - 2rem); padding: var(--space-4);
  border-radius: 14px; background: var(--surface); color: var(--ink); box-shadow: var(--elev-2);
  transform-origin: var(--origin, 50% 100%);
}
.b-popover__head { display: flex; justify-content: space-between; align-items: center; margin: -0.25rem -0.5rem var(--space-3) 0; }
.b-popover__title { font: 620 0.9375rem/1.25rem var(--font-sans); color: var(--ink); margin: 0; }
.b-popover[data-state="opening"] { animation: b-pop-in var(--dur-ui) var(--ease-out) both; }
@keyframes b-pop-in { from { opacity: 0; transform: translateY(4px) scale(0.98); } }

.b-menu { display: grid; min-width: 12rem; padding: 0.375rem; border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--elev-2); }
.b-menu__item {
  display: flex; align-items: center; gap: var(--space-3); min-height: var(--target-min); padding: 0 var(--space-3);
  border: 0; border-radius: 8px; background: transparent; color: var(--ink); text-align: left; cursor: pointer;
  font: 500 0.9375rem/1.25rem var(--font-sans);
}
.b-menu__item .b-icon { color: var(--ink-2); }
.b-menu__item:hover, .b-menu__item:focus-visible { background: var(--fill); outline: none; }
.b-menu__item--danger, .b-menu__item--danger .b-icon { color: var(--danger); }
.b-menu__sep { height: 1px; margin: 0.375rem 0.5rem; background: var(--hairline); }

.b-sheet {
  width: 100%; padding: 0.5rem var(--space-5) calc(var(--space-6) + env(safe-area-inset-bottom));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0; background: var(--surface); color: var(--ink); box-shadow: var(--elev-3);
}
.b-sheet__grabber { width: 2.25rem; height: 5px; margin: 0 auto var(--space-3); border-radius: var(--radius-pill); background: var(--fill-strong); }
.b-sheet__head { display: grid; grid-template-columns: 2.75rem 1fr 2.75rem; align-items: center; margin-bottom: var(--space-4); }
.b-sheet__title { grid-column: 2; text-align: center; font: 620 1rem/1.375rem var(--font-sans); margin: 0; }
.b-sheet[data-state="opening"] { animation: b-sheet-in var(--dur-sheet) var(--ease-out) both; }
@keyframes b-sheet-in { from { transform: translateY(100%); } }

.b-scrim { position: absolute; inset: 0; background: var(--scrim); }
.b-dialog {
  width: min(26rem, calc(100% - 2rem)); padding: var(--space-6);
  border-radius: var(--radius-xl); background: var(--surface); color: var(--ink); box-shadow: var(--elev-3);
}
.b-dialog__title { margin: 0 0 var(--space-2); font: 620 1.1875rem/1.625rem var(--font-sans); letter-spacing: -0.006em; }
.b-dialog__body { margin: 0 0 var(--space-6); color: var(--ink-2); }
.b-dialog__actions { display: flex; justify-content: flex-end; gap: var(--space-2); }
.b-dialog .b-field { margin-bottom: var(--space-6); }

/* ---------- Toast and HUD ---------- */
.b-toast {
  display: inline-flex; align-items: center; gap: var(--space-3); max-width: min(28rem, calc(100vw - 2rem));
  padding: 0.75rem 0.75rem 0.75rem 1rem; border-radius: var(--radius-md);
  background: var(--toast); color: var(--on-toast); box-shadow: var(--elev-2);
  font: 500 0.9375rem/1.375rem var(--font-sans);
}
.b-toast .b-icon { color: var(--on-toast); opacity: 0.8; }
.b-toast__action { margin-left: var(--space-2); padding: 0.25rem 0.5rem; border: 0; border-radius: 6px; background: transparent; color: var(--on-toast); font: 650 0.9375rem/1.25rem var(--font-sans); text-decoration: underline; text-underline-offset: 0.2em; cursor: pointer; }
.b-toast--error .b-icon { opacity: 1; }
.b-toast[data-state="entering"] { animation: b-rise var(--dur-ui) var(--ease-out) both; }
@keyframes b-rise { from { opacity: 0; transform: translateY(8px); } }

.b-hud {
  display: inline-flex; align-items: baseline; gap: 0.3rem; padding: 0.5rem 1rem; border-radius: var(--radius-pill);
  background: var(--hud); color: var(--on-toast); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  font: 620 1.0625rem/1.25rem var(--font-sans); font-variant-numeric: tabular-nums;
}
.b-hud span { font-weight: 450; font-size: 0.8125rem; opacity: 0.8; }

/* ---------- Reader ---------- */
.b-reader { position: relative; height: 100dvh; overflow: hidden; background: var(--paper); color: var(--ink); }
.b-reader__scroll { position: absolute; inset: 0; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: none; z-index: var(--z-text); }

.b-reading {
  max-width: calc(var(--read-measure) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter);
  font-family: var(--font-serif); font-size: var(--read-size); line-height: var(--read-leading);
  font-weight: var(--read-wght); font-optical-sizing: auto; font-kerning: normal;
  font-variant-numeric: oldstyle-nums proportional-nums;
  text-align: left; hyphens: auto; text-wrap: pretty; overflow-wrap: break-word; color: var(--ink);
}
.b-reading.is-sans { font-family: var(--font-sans); font-variant-numeric: lining-nums proportional-nums; letter-spacing: 0.004em; }
.b-reading ::selection { background: var(--selection); color: var(--ink); }
.b-reading p { margin: 0; text-indent: var(--read-indent); }
.b-reading :is(h1, h2, h3, h4, h5, h6, .b-break, blockquote, ul, .b-omitted, .b-lines) + p,
.b-reading p:first-child { text-indent: 0; }
.b-reading em { font-style: italic; }
.b-reading strong { font-weight: var(--read-wght-strong); }
.b-reading :is(h1, h2, h3, h4, h5, h6) { hyphens: manual; text-wrap: balance; color: var(--ink); }
.b-reading h1 { margin: 0 0 0.886em; font-size: 1.75em; line-height: 1.2; font-weight: 450; letter-spacing: -0.012em; }
.b-reading h2 { margin: 1.69em 0 0.56em; font-size: 1.375em; line-height: 1.25; font-weight: 500; letter-spacing: -0.006em; }
.b-reading h3 { margin: 1.38em 0 0.34em; font-size: 1.125em; line-height: 1.3; font-weight: 600; }
.b-reading h4 { margin: 1.55em 0 0; font-size: 1em; line-height: var(--read-leading); font-weight: 650; }
.b-reading :is(h5, h6) { margin: 1.55em 0 0; font-size: 1em; line-height: var(--read-leading); font-weight: 600; font-variant-caps: all-small-caps; letter-spacing: 0.06em; }
.b-reading h6 { color: var(--ink-2); }
.b-reading.is-sans h1 { font-weight: 600; letter-spacing: -0.018em; }
.b-reading.is-sans h2 { font-weight: 620; }
.b-reading.is-sans :is(h3, h4, h5, h6) { font-weight: 700; }
.b-reading > :is(h1, h2, h3):first-child { margin-top: 0; }
.b-reading blockquote { margin: 0.775em 0; padding-inline-start: 1.5em; }
.b-reading blockquote p { text-indent: 0; }
.b-reading .b-lines { margin: 0.775em 0; padding-inline-start: 1.5em; text-indent: 0; white-space: pre-line; }
.b-reading ul { margin: 0.775em 0; padding: 0; list-style: none; }
.b-reading li { position: relative; padding-inline-start: 1.5em; }
.b-reading li::before { content: ""; position: absolute; inset-inline-start: 0.45em; top: 0.72em; width: 0.28em; height: 0.28em; border-radius: 50%; background: var(--ink-2); }
.b-break { display: flex; align-items: center; justify-content: center; gap: 0.55em; height: 3.1em; }
.b-break::before, .b-break::after { content: ""; width: 0.24em; height: 0.24em; border-radius: 50%; background: var(--ink-3); }
.b-break span { width: 1.4em; height: 0.24em; border-radius: 0.12em; background: var(--ink-3); }
.b-omitted {
  display: block; width: max-content; margin: 0.775em 0; padding: 0 0.6em; border-radius: var(--radius-xs);
  background: var(--fill); color: var(--ink-2); font: 500 0.8em/1.94 var(--font-sans); letter-spacing: 0.02em;
}
.b-reading .b-matter { color: var(--ink); }

/* reading band and fades */
.b-guide { position: absolute; inset: 0; pointer-events: none; z-index: var(--z-band); font-size: var(--read-size); --band-h: calc(var(--read-size) * var(--read-leading) + 0.65rem); }
.b-band {
  position: absolute; left: 50%; width: min(100%, calc(var(--read-measure) + 3rem));
  top: calc(var(--read-line) - var(--band-h) / 2); height: var(--band-h); transform: translateX(-50%);
  background: var(--band); border-radius: 0.5rem;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 2rem, #000 calc(100% - 2rem), transparent);
          mask-image: linear-gradient(to right, transparent, #000 2rem, #000 calc(100% - 2rem), transparent);
  transition: opacity var(--dur-ui) var(--ease-out);
}
.b-band::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: var(--band-flash); opacity: 0; }
.b-band.is-paused { opacity: 0.55; }
.b-band.is-flashing::after { animation: b-flash var(--dur-flash) var(--ease-out) both; }
@keyframes b-flash { 0% { opacity: 0; } 13% { opacity: 1; } 100% { opacity: 0; } }
.b-fade { position: absolute; inset-inline: 0; }
.b-fade--top { top: 0; height: calc(var(--read-line) - var(--band-h) / 2); background: linear-gradient(to bottom, var(--fade-edge), transparent 92%); }
.b-fade--bottom { bottom: 0; top: calc(var(--read-line) + var(--band-h) / 2); background: linear-gradient(to top, var(--fade-edge), transparent 92%); }
.b-guide.is-paused .b-fade { opacity: 0.6; }

/* chrome: one floating layer */
.b-chrome { transition: opacity var(--dur-stop) var(--ease-out), transform var(--dur-stop) var(--ease-out); }
.is-playing .b-chrome { opacity: 0; pointer-events: none; transition-duration: var(--dur-chrome-out); transition-timing-function: var(--ease-in-out); }
.is-playing .b-rhead { transform: translateY(-6px); }
.is-playing .b-rfoot { transform: translateY(6px); }
.b-rhead {
  position: absolute; z-index: var(--z-chrome); top: 0; inset-inline: 0;
  display: grid; grid-template-columns: var(--target-min) 1fr var(--target-min); align-items: center; gap: var(--space-2);
  min-height: calc(var(--header-height) + var(--space-5)); padding: env(safe-area-inset-top) var(--space-2) var(--space-5);
  background: linear-gradient(to bottom, var(--paper) calc(100% - var(--space-6)), transparent);
}
.b-rhead__title { min-width: 0; text-align: center; }
.b-rhead__doc, .b-rhead__chapter { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.b-rhead__doc { font: 600 0.875rem/1.25rem var(--font-sans); color: var(--ink); }
.b-rhead__chapter { font: 450 0.8125rem/1.125rem var(--font-sans); color: var(--ink-2); }
.b-rfoot {
  position: absolute; z-index: var(--z-chrome); bottom: 0; inset-inline: 0;
  display: grid; justify-items: center; gap: var(--space-3);
  padding: var(--space-12) var(--space-3) calc(var(--space-4) + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--paper) 72%, transparent);
}
.b-progress-meta { display: grid; grid-template-columns: 1fr auto; gap: var(--space-2) var(--space-4); width: min(100%, 30rem); padding: 0 var(--space-2); font: 500 0.8125rem/1.125rem var(--font-sans); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.b-progress-meta__track { grid-column: 1 / -1; height: 2px; border-radius: 1px; background: var(--hairline); overflow: hidden; }
.b-progress-meta__fill { height: 100%; background: var(--ink-2); }
.b-bar {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: var(--space-2);
  width: min(100%, 30rem); padding: 0.375rem; border-radius: var(--radius-pill);
  background: var(--layer); -webkit-backdrop-filter: blur(20px) saturate(1.15); backdrop-filter: blur(20px) saturate(1.15);
  box-shadow: var(--elev-1);
}
.b-bar__group { display: flex; align-items: center; gap: 0.125rem; }
.b-bar__group--end { justify-content: flex-end; }
.b-bar__transport { display: flex; align-items: center; gap: var(--space-2); }
.b-speed-chip {
  display: inline-flex; align-items: baseline; gap: 0.25rem; min-height: var(--target-min); padding: 0 0.75rem;
  border: 0; border-radius: var(--radius-pill); background: transparent; color: var(--ink); cursor: pointer;
  font: 620 0.9375rem/var(--target-min) var(--font-sans); font-variant-numeric: tabular-nums;
}
.b-speed-chip span { font-weight: 450; font-size: 0.8125rem; color: var(--ink-2); }
.b-speed-chip:hover, .b-speed-chip[aria-expanded="true"] { background: var(--fill); }

/* overlays inside the reader */
.b-resume {
  display: inline-flex; align-items: center; gap: 0.375rem; height: 2.25rem; padding: 0 1rem 0 0.75rem;
  border: 0; border-radius: var(--radius-pill); background: var(--accent); color: var(--on-accent); box-shadow: var(--elev-1);
  font: 620 0.875rem/1 var(--font-sans); cursor: pointer;
}
.b-resume .b-icon { width: 0.875rem; height: 0.875rem; }
.b-resume[data-state="entering"] { animation: b-rise var(--dur-ui) var(--ease-out) both; }

.b-coach {
  width: min(27rem, calc(100vw - 2rem)); padding: var(--space-5) var(--space-5) var(--space-4);
  border-radius: var(--radius-lg); background: var(--surface); color: var(--ink); box-shadow: var(--elev-2);
}
.b-coach__title { margin: 0 0 var(--space-2); font: 500 1.1875rem/1.5rem var(--font-serif); letter-spacing: -0.005em; }
.b-coach__body { margin: 0 0 var(--space-4); color: var(--ink-2); }
.b-coach__keys { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); margin: 0 0 var(--space-4); font: 500 0.875rem/1.25rem var(--font-sans); }
.b-coach__keys > div { display: flex; align-items: center; gap: var(--space-2); }
.b-coach__keys dt { display: flex; gap: 0.25rem; color: var(--ink-2); }
.b-coach__keys dd { margin: 0; color: var(--ink); }
.b-coach__tip { margin: 0; padding-top: var(--space-4); border-top: 1px solid var(--hairline); font: italic 400 1rem/1.5 var(--font-serif); color: var(--ink); }
.b-coach__foot { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--space-4); }
.b-coach[data-state="entering"] { animation: b-rise var(--dur-card) var(--ease-out) both; }

.b-end { display: grid; justify-items: start; gap: 0; max-width: 28rem; font-family: var(--font-sans); text-indent: 0; }
.b-end .b-end__title { margin: 0; font: 450 2rem/1.15 var(--font-serif); }
.b-end .b-end__eyebrow { margin: 0 0 var(--space-3); }
.b-end .b-end__author { margin: var(--space-2) 0 0; text-indent: 0; }
.b-end__eyebrow { font: 650 0.75rem/1rem var(--font-sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); margin: 0 0 var(--space-3); }
.b-end__title { margin: 0; font: 450 2rem/1.15 var(--font-serif); letter-spacing: -0.015em; color: var(--ink); text-wrap: balance; }
.b-end__author { margin: var(--space-2) 0 0; font: 400 1rem/1.4 var(--font-serif); font-style: italic; color: var(--ink-2); }
.b-end__band { width: 100%; height: 2.4rem; margin: var(--space-4) 0 var(--space-5); border-radius: 0.5rem; background: var(--band-flash);
  -webkit-mask-image: linear-gradient(to right, #000 70%, transparent); mask-image: linear-gradient(to right, #000 70%, transparent);
  transform-origin: left center; display: none; }
.b-end__stats { display: grid; grid-template-columns: repeat(3, auto); gap: var(--space-8); margin: var(--space-8) 0; padding: 0; }
.b-end__stats div { display: grid; gap: 0.125rem; }
.b-end__stats dt { order: 2; font: 450 0.8125rem/1.125rem var(--font-sans); color: var(--ink-2); }
.b-end__stats dd { order: 1; margin: 0; font: 520 1.625rem/2rem var(--font-sans); letter-spacing: -0.015em; font-variant-numeric: tabular-nums lining-nums; color: var(--ink); }
.b-end__stats dd small { font-size: 0.9375rem; font-weight: 450; color: var(--ink-2); letter-spacing: 0; margin-left: 0.125rem; }
.b-end__actions { display: flex; gap: var(--space-2); align-items: center; }
.b-end[data-state="entering"] > * { animation: b-rise var(--dur-card) var(--ease-out) both; }
.b-end[data-state="entering"] > :nth-child(2) { animation-delay: 60ms; }
.b-end[data-state="entering"] > :nth-child(3) { animation-delay: 120ms; }
.b-end[data-state="entering"] > :nth-child(4) { animation-delay: 220ms; }
.b-end[data-state="entering"] > :nth-child(5) { animation-delay: 320ms; }

/* chapter menu */
.b-toc { display: grid; gap: 1px; max-height: min(60vh, 26rem); overflow-y: auto; margin: 0 -0.5rem; padding: 0; list-style: none; }
.b-toc a {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: var(--space-3);
  min-height: var(--target-min); padding: 0.5rem 0.75rem; border-radius: 8px;
  color: var(--ink); text-decoration: none; font: 450 0.9375rem/1.25rem var(--font-sans);
}
.b-toc a:hover { background: var(--fill); }
.b-toc a[aria-current="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 620; }
.b-toc a[aria-current="true"] .b-icon { color: var(--accent); }
.b-toc .is-matter a { color: var(--ink-2); }
.b-toc .b-toc__sep { height: 1px; margin: 0.375rem 0.75rem; background: var(--hairline); }
.b-toc-nav { display: flex; justify-content: space-between; margin: var(--space-3) -0.5rem -0.25rem; padding-top: var(--space-2); border-top: 1px solid var(--hairline); }

/* text settings */
.b-tset { display: grid; gap: var(--space-5); }
.b-tset__label { margin: 0 0 var(--space-2); font: 600 0.8125rem/1.125rem var(--font-sans); color: var(--ink-2); }
.b-swatches { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-2); }
.b-swatch {
  display: grid; justify-items: center; gap: 0.375rem; padding: 0.625rem 0 0.5rem; border: 0; border-radius: 10px;
  background: transparent; cursor: pointer; color: var(--ink-2); font: 600 0.8125rem/1rem var(--font-sans);
}
.b-swatch__chip { display: grid; place-items: center; width: 3rem; height: 2.25rem; border-radius: 8px; font: 500 1.0625rem/1 var(--font-serif); box-shadow: inset 0 0 0 1px var(--fill-strong); }
.b-swatch__chip--light { background: #faf8f4; color: #1e1c19; }
.b-swatch__chip--sepia { background: #f3ead6; color: #3a2e21; }
.b-swatch__chip--dark { background: #151413; color: #e4dfd6; }
.b-swatch[aria-checked="true"] { color: var(--ink); }
.b-swatch[aria-checked="true"] .b-swatch__chip { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--accent); }
.b-swatch:hover:not([aria-checked="true"]) .b-swatch__chip { box-shadow: inset 0 0 0 1px var(--control-border); }
.b-size { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-2); }
.b-size__dots { display: flex; justify-content: space-between; align-items: center; padding: 0 0.25rem; }
.b-size__dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--fill-strong); }
.b-size__dots i.on { background: var(--ink-2); }
.b-size__dots i.cur { width: 10px; height: 10px; background: var(--accent); }
.b-tset__foot { display: flex; justify-content: space-between; align-items: center; padding-top: var(--space-3); border-top: 1px solid var(--hairline); font: 450 0.8125rem/1.125rem var(--font-sans); color: var(--ink-2); }

.b-shortcuts { display: grid; grid-template-columns: auto 1fr; gap: 0.625rem var(--space-5); margin: 0; font: 450 0.9375rem/1.25rem var(--font-sans); }
.b-shortcuts dt { display: flex; gap: 0.25rem; justify-content: flex-end; }
.b-shortcuts dd { margin: 0; color: var(--ink); }

/* ---------- App shell ---------- */
.b-page { max-width: calc(var(--page-width) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter) var(--space-16); }
.b-appbar { display: flex; justify-content: space-between; align-items: center; height: 4rem; padding-top: env(safe-area-inset-top); }
.b-wordmark { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--ink); text-decoration: none; border-radius: 6px; }
.b-wordmark svg { display: block; height: 1.375rem; width: auto; }
.b-nav { display: flex; align-items: center; gap: 0.125rem; }
.b-nav a {
  display: inline-flex; align-items: center; gap: 0.375rem; min-height: 2.5rem; padding: 0 0.75rem; border-radius: var(--radius-pill);
  color: var(--ink-2); text-decoration: none; font: 500 0.9375rem/1.25rem var(--font-sans);
}
.b-nav a:hover { color: var(--ink); background: var(--fill); }
.b-nav a[aria-current="page"] { color: var(--ink); font-weight: 620; }
.b-page__head { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); margin: var(--space-8) 0 var(--space-6); }
.b-page__title { margin: 0; font: 620 1.75rem/2.25rem var(--font-sans); letter-spacing: -0.014em; }
.b-section-title { margin: 0 0 var(--space-3); font: 620 1.1875rem/1.625rem var(--font-sans); letter-spacing: -0.006em; }

/* ---------- Library ---------- */
.b-continue {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: var(--space-5);
  margin: 0 calc(-1 * var(--space-4)) var(--space-8); padding: var(--space-5) var(--space-4);
  border-radius: var(--radius-lg); color: inherit; text-decoration: none;
  transition: background-color var(--dur-stop) var(--ease-out);
}
.b-continue:hover { background: var(--fill); }
.b-continue__eyebrow { margin: 0 0 var(--space-2); font: 650 0.75rem/1rem var(--font-sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); }
.b-continue__title { margin: 0; font: 450 1.625rem/1.2 var(--font-serif); letter-spacing: -0.01em; color: var(--ink); text-wrap: balance; }
.b-continue__author { margin: 0.25rem 0 0; font: 400 1rem/1.4 var(--font-serif); font-style: italic; color: var(--ink-2); }
.b-continue__progress { margin-top: var(--space-4); display: grid; gap: var(--space-2); }
.b-continue__track { height: 2px; border-radius: 1px; background: var(--hairline); overflow: hidden; }
.b-continue__fill { height: 100%; background: var(--ink-2); }
.b-meta { font: 450 0.8125rem/1.125rem var(--font-sans); letter-spacing: 0.008em; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.b-meta .b-dot { margin: 0 0.35em; }
.b-list { margin: 0; padding: 0; list-style: none; }
.b-row { position: relative; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: var(--space-3); border-top: 1px solid var(--hairline); }
.b-row:last-child { border-bottom: 1px solid var(--hairline); }
.b-row__link { display: grid; gap: 0.125rem; padding: var(--space-4) 0; color: inherit; text-decoration: none; min-width: 0; }
.b-row__link::after { content: ""; position: absolute; inset: -1px calc(-1 * var(--space-3)); border-radius: var(--radius-md); background: var(--fill); opacity: 0; transition: opacity var(--dur-stop) var(--ease-out); z-index: -1; }
.b-row__link:hover::after { opacity: 1; }
.b-row__title { font: 450 1.125rem/1.4 var(--font-serif); color: var(--ink); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.b-row__author { font: italic 400 0.9375rem/1.375rem var(--font-serif); color: var(--ink-2); }
.b-row .b-meta { margin-top: 0.25rem; display: flex; align-items: center; flex-wrap: wrap; gap: 0 0.35em; }
.b-row .b-meta .b-icon { width: 1rem; height: 1rem; }
.b-row__wpm { display: inline-flex; padding: 0 0.4rem; border-radius: var(--radius-xs); background: var(--fill); color: var(--ink-2); }
.b-row__actions { position: relative; }
.b-row__actions .b-menu { position: absolute; right: 0; top: calc(100% + 4px); z-index: var(--z-popover); }
.b-row.is-finished .b-row__title { color: var(--ink-2); }
.b-row__rename { display: grid; grid-template-columns: 1fr auto auto; gap: var(--space-2); align-items: center; padding: var(--space-3) 0; }
.b-tag { display: inline-flex; padding: 0 0.4rem; border-radius: var(--radius-xs); background: var(--fill); color: var(--ink-2); font: 600 0.75rem/1.25rem var(--font-sans); letter-spacing: 0.02em; }

.b-empty { display: grid; justify-items: start; gap: var(--space-3); padding: var(--space-12) 0; max-width: 26rem; }
.b-empty__title { margin: 0; font: 450 2rem/1.15 var(--font-serif); letter-spacing: -0.015em; }
.b-empty__body { margin: 0 0 var(--space-3); color: var(--ink-2); font-size: 1rem; line-height: 1.5rem; }

/* ---------- Add text ---------- */
.b-drop {
  position: relative; display: grid; justify-items: center; align-content: center; gap: var(--space-2); min-height: 18rem;
  padding: var(--space-8) var(--space-6); text-align: center; border-radius: var(--radius-lg);
  background: var(--paper-sunken); box-shadow: inset 0 0 0 1px var(--hairline);
  transition: background-color var(--dur-ui) var(--ease-out), box-shadow var(--dur-ui) var(--ease-out);
}
.b-drop__page { width: 3.25rem; height: 4rem; margin-bottom: var(--space-3); transition: transform var(--dur-ui) var(--ease-out); }
.b-drop__page .pg { fill: var(--surface); stroke: var(--control-border); }
.b-drop__page .ln { fill: var(--ink-3); }
.b-drop__page .bd { fill: var(--band-flash); }
.b-drop__title { margin: 0; font: 450 1.25rem/1.4 var(--font-serif); color: var(--ink); }
.b-drop__or { color: var(--ink-2); margin: 0 0 var(--space-3); }
.b-drop__caption { margin: var(--space-3) 0 0; }
.b-drop.is-over { background: var(--accent-soft); box-shadow: inset 0 0 0 2px var(--accent); }
.b-drop.is-over .b-drop__page { transform: translateY(-4px); }
.b-drop.is-invalid-over { box-shadow: inset 0 0 0 2px var(--control-border); }
.b-drop.is-error { box-shadow: inset 0 0 0 1px var(--danger); }
.b-file {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-3); width: min(100%, 26rem);
  padding: 0.5rem 0.25rem 0.5rem 0.875rem; border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--elev-1); text-align: left;
}
.b-file .b-icon { color: var(--ink-2); }
.b-file__name { min-width: 0; font: 600 0.9375rem/1.25rem var(--font-sans); color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.b-file__size { font: 450 0.8125rem/1.125rem var(--font-sans); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.b-working { display: grid; gap: var(--space-3); width: min(100%, 20rem); justify-items: center; }
.b-indeterminate { position: relative; width: 100%; height: 2px; border-radius: 1px; background: var(--hairline); overflow: hidden; }
.b-indeterminate::after { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 35%; border-radius: 1px; background: linear-gradient(to right, transparent, var(--ink-2), transparent); animation: b-sweep var(--dur-indeterminate) var(--ease-in-out) infinite; }
@keyframes b-sweep { from { transform: translateX(-100%); } to { transform: translateX(290%); } }
.b-notice { display: grid; grid-template-columns: auto 1fr; gap: 0.25rem var(--space-3); padding: var(--space-4); border-radius: var(--radius-md); background: var(--paper-sunken); text-align: left; }
.b-notice > .b-icon { grid-row: span 3; margin-top: 1px; color: var(--danger); }
.b-notice--info > .b-icon { color: var(--ink-2); }
.b-notice__title { margin: 0; font: 620 0.9375rem/1.375rem var(--font-sans); color: var(--ink); }
.b-notice__body { margin: 0; color: var(--ink-2); }
.b-notice__actions { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: var(--space-2) 0 0 calc(-1 * var(--space-2)); }
.b-notice__actions .b-btn { min-height: 2.25rem; font-size: 0.875rem; }

/* ---------- Auth ---------- */
.b-auth { display: grid; justify-items: center; min-height: 100dvh; padding: var(--space-16) var(--gutter) var(--space-8); }
.b-auth__inner { width: min(100%, var(--auth-width)); }
.b-auth__mark { display: flex; justify-content: center; margin-bottom: var(--space-12); color: var(--ink); }
.b-auth__mark svg { height: 1.625rem; width: auto; }
.b-auth__title { margin: 0 0 var(--space-2); font: 620 1.75rem/2.25rem var(--font-sans); letter-spacing: -0.014em; }
.b-auth__lede { margin: 0 0 var(--space-8); color: var(--ink-2); font-size: 1rem; line-height: 1.5rem; }
.b-stack { display: grid; gap: var(--space-5); }
.b-auth__alt { margin-top: var(--space-6); text-align: center; color: var(--ink-2); }
.b-auth__foot { margin-top: var(--space-16); text-align: center; font: italic 400 1rem/1.5 var(--font-serif); color: var(--ink-2); }
.b-banner { display: flex; gap: var(--space-3); align-items: flex-start; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); background: var(--paper-sunken); color: var(--ink); }
.b-banner .b-icon { margin-top: 1px; color: var(--ink-2); }
.b-banner--error .b-icon { color: var(--danger); }

/* ---------- Settings ---------- */
.b-settings section { padding: var(--space-6) 0; border-top: 1px solid var(--hairline); }
.b-settings section:first-of-type { border-top: 0; padding-top: 0; }
.b-settings__desc { margin: 0 0 var(--space-4); color: var(--ink-2); }
.b-settings__speed { max-width: 24rem; }
.b-saved { display: inline-flex; align-items: center; gap: 0.25rem; color: var(--ink-2); font: 450 0.8125rem/1.125rem var(--font-sans); }
.b-saved .b-icon { width: 1rem; height: 1rem; }

@media (max-width: 599px) {
  .b-end__stats { gap: var(--space-5); margin: var(--space-6) 0; }
  .b-end__title { font-size: 1.75rem; }
  .b-page__head { margin-top: var(--space-4); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .b-root *, .b-root *::before, .b-root *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; }
  .b-chrome, .is-playing .b-rhead, .is-playing .b-rfoot { transform: none !important; }
  .b-indeterminate::after { animation: none !important; left: 0; width: 100%; opacity: 0.5; }
  .b-band.is-flashing::after { animation: none !important; opacity: 0.6; }
  .b-reading.is-stepping { transition: opacity var(--dur-rm-step) linear !important; }
}