/* LipRead phone UI. Modelled on iOS: system font, grouped/inset lists, sheets, large title.
   Sizes are in rem so they follow the user's text size. 1 rem = 16 px = 1 pt at 1x. */

/* ---------- Tokens: light (default) ---------- */
:root {
  color-scheme: light dark;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;

  --blue: #007AFF;            /* systemBlue */
  --blue-bg: rgba(0, 122, 255, 0.14);
  --red: #FF3B30;             /* systemRed */
  --green: #34C759;           /* systemGreen */
  --green-text: #1D7A33;
  --green-bg: rgba(52, 199, 89, 0.17);
  --orange-text: #A14F00;
  --orange-bg: rgba(255, 149, 0, 0.18);
  --gray-text: #5F5F65;
  --gray-bg: rgba(142, 142, 147, 0.2);

  --label: #000000;           /* label */
  --secondary-label: #6C6C71; /* secondaryLabel, darkened so small text passes 4.5:1 */
  --tertiary-label: rgba(60, 60, 67, 0.3);
  --bg: #F2F2F7;              /* systemGroupedBackground */
  --card: #FFFFFF;            /* secondarySystemGroupedBackground */
  --sheet-bg: #F2F2F7;        /* sheets sit on the grouped background */
  --nav-bg: rgba(249, 249, 249, 0.82);
  --separator: rgba(60, 60, 67, 0.29);
  --pressed: #D1D1D6;         /* systemGray4 highlight on rows */
  --fill: rgba(120, 120, 128, 0.2);
  --fill-tertiary: rgba(118, 118, 128, 0.12);
  --backdrop: rgba(0, 0, 0, 0.4);
  --pill-bg: rgba(0, 0, 0, 0.6);
  --toast-bg: rgba(40, 40, 44, 0.92);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  --menu-bg: #FFFFFF;         /* popovers: elevated, solid so the caret blends */
  --menu-shadow: drop-shadow(0 0 0.5px rgba(0, 0, 0, 0.3)) drop-shadow(0 8px 22px rgba(0, 0, 0, 0.18));

  --radius-card: 14px;
  --radius-group: 10px;
  --ease-sheet: cubic-bezier(0.32, 0.72, 0, 1);
}

/* ---------- Tokens: dark ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --blue: #0A84FF;
    --blue-bg: rgba(10, 132, 255, 0.22);
    --red: #FF453A;
    --green: #30D158;
    --green-text: #30D158;
    --green-bg: rgba(48, 209, 88, 0.2);
    --orange-text: #FF9F0A;
    --orange-bg: rgba(255, 159, 10, 0.22);
    --gray-text: #A1A1A6;
    --gray-bg: rgba(142, 142, 147, 0.26);

    --label: #FFFFFF;
    --secondary-label: rgba(235, 235, 245, 0.6);
    --tertiary-label: rgba(235, 235, 245, 0.3);
    --bg: #000000;
    --card: #1C1C1E;
    --sheet-bg: #1C1C1E;
    --nav-bg: rgba(28, 28, 30, 0.82);
    --separator: rgba(84, 84, 88, 0.65);
    --pressed: #2C2C2E;
    --fill: rgba(120, 120, 128, 0.36);
    --fill-tertiary: rgba(118, 118, 128, 0.24);
    --backdrop: rgba(0, 0, 0, 0.6);
    --pill-bg: rgba(0, 0, 0, 0.62);
    --toast-bg: rgba(60, 60, 64, 0.94);
    --shadow: none;
    --menu-bg: #2C2C2E;
    --menu-shadow: drop-shadow(0 0 0.5px rgba(255, 255, 255, 0.2)) drop-shadow(0 10px 26px rgba(0, 0, 0, 0.55));
  }
}

:root[data-theme="dark"] {
  --blue: #0A84FF;
  --blue-bg: rgba(10, 132, 255, 0.22);
  --red: #FF453A;
  --green: #30D158;
  --green-text: #30D158;
  --green-bg: rgba(48, 209, 88, 0.2);
  --orange-text: #FF9F0A;
  --orange-bg: rgba(255, 159, 10, 0.22);
  --gray-text: #A1A1A6;
  --gray-bg: rgba(142, 142, 147, 0.26);
  --label: #FFFFFF;
  --secondary-label: rgba(235, 235, 245, 0.6);
  --tertiary-label: rgba(235, 235, 245, 0.3);
  --bg: #000000;
  --card: #1C1C1E;
  --sheet-bg: #1C1C1E;
  --nav-bg: rgba(28, 28, 30, 0.82);
  --separator: rgba(84, 84, 88, 0.65);
  --pressed: #2C2C2E;
  --fill: rgba(120, 120, 128, 0.36);
  --fill-tertiary: rgba(118, 118, 128, 0.24);
  --backdrop: rgba(0, 0, 0, 0.6);
  --pill-bg: rgba(0, 0, 0, 0.62);
  --toast-bg: rgba(60, 60, 64, 0.94);
  --shadow: none;
  --menu-bg: #2C2C2E;
  --menu-shadow: drop-shadow(0 0 0.5px rgba(255, 255, 255, 0.2)) drop-shadow(0 10px 26px rgba(0, 0, 0, 0.55));
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 1.0625rem;          /* 17 pt body */
  line-height: 1.35;
  color: var(--label);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

h1, h2, h3, p, figure, ul { margin: 0; }
h1[tabindex="-1"]:focus { outline: none; }   /* screen headings take focus after a screen change; no ring on them */
ul { padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--card); color: var(--blue); padding: 0.5rem 0.75rem; border-radius: 8px;
}
.skip-link:focus { top: calc(env(safe-area-inset-top) + 0.5rem); }

.icon {
  width: 1.5rem; height: 1.5rem;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  overflow: visible;
}
.icon--solid { fill: currentColor; stroke: none; }
.icon--record { width: 1.25rem; height: 1.25rem; color: var(--red); stroke-width: 0; fill: currentColor; }
.icon--solid-stroke { stroke-width: 2.6; }
.chev { width: 1.125rem; height: 1.125rem; color: var(--tertiary-label); stroke: var(--gray-text); opacity: 0.8; }
.glyph-line { stroke: #007AFF; }

/* ---------- Navigation bar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  padding-top: env(safe-area-inset-top);
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 0.5px solid transparent;
  transition: border-color 0.2s ease;
}
.navbar.is-scrolled { border-bottom-color: var(--separator); }

.navbar__bar {
  height: 2.75rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding-left: calc(env(safe-area-inset-left) + 0.25rem);
  padding-right: calc(env(safe-area-inset-right) + 0.25rem);
}

.navbar__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 62vw;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.navbar.show-title .navbar__title { opacity: 1; }

.navbar__side { display: flex; align-items: center; min-width: 0; }
.navbar__side--start { justify-content: flex-start; }
.navbar__side--end { justify-content: flex-end; gap: 0.25rem; }

.nav-btn {
  appearance: none;
  min-width: 2.75rem;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: none;
  color: var(--blue);
  cursor: pointer;
  border-radius: 10px;
}
.nav-btn:active { opacity: 0.4; }
.nav-btn--text {
  justify-content: flex-start;
  gap: 0.125rem;
  padding-right: 0.5rem;
  font-size: 1.0625rem;
  font-weight: 400;
}
.nav-btn--text .icon { width: 1.5rem; height: 1.5rem; margin-left: -0.375rem; }
.nav-btn--end { justify-content: flex-end; font-weight: 600; padding: 0 0.5rem; }

/* ---------- Content and screens ---------- */
.content {
  position: relative;
  padding: calc(env(safe-area-inset-top) + 2.75rem) 0 calc(env(safe-area-inset-bottom) + 2.5rem);
  outline: none;
}

.screen {
  padding: 0 1rem;
  max-width: 40rem;
  margin: 0 auto;
}
.screen.enter { animation: screen-in 0.36s var(--ease-sheet) both; }

@keyframes screen-in {
  from { opacity: 0; transform: translateX(1.5rem); }
  to { opacity: 1; transform: none; }
}

.large-title {
  font-size: 2.125rem;           /* 34 pt */
  font-weight: 700;
  letter-spacing: 0.4px;
  line-height: 1.15;
  padding: 0.5rem 0.25rem 0.875rem;
}

.section-header {
  margin: 1.75rem 1rem 0.5rem;
  font-size: 0.8125rem;          /* 13 pt */
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: -0.08px;
  color: var(--secondary-label);
}
.section-header--tight { margin-top: 1.25rem; }

.footnote {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--secondary-label);
  padding: 0.5rem 1rem 0;
}
.footnote--pad { padding: 0.5rem 1rem 0.25rem; }
.footnote--inline { padding: 0; }
.footer-note { text-align: center; margin-top: 1.75rem; }

/* ---------- Cards and hero ---------- */
.card {
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
}

.hero {
  margin-top: 0.25rem;
  padding: 1.5rem 1.25rem 1.25rem;
  text-align: center;
}
.hero__art {
  width: 4.5rem;
  height: 4.5rem;
  margin: 0 auto 0.875rem;
  border-radius: 50%;
  background: var(--blue);
  display: grid;
  place-items: center;
  color: #fff;
}
.hero__art .icon { width: 2.5rem; height: 2.5rem; fill: #fff; stroke: none; }
.hero__art .glyph-line { stroke: var(--blue); }
.hero__title { font-size: 1.3125rem; font-weight: 700; line-height: 1.2; }
.hero__text {
  margin: 0.375rem auto 1.25rem;
  max-width: 19rem;
  font-size: 0.9375rem;
  line-height: 1.4;
  color: var(--secondary-label);
}
.hero__actions { display: grid; gap: 0.625rem; }

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  width: 100%;
  min-height: 3.125rem;
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1.0625rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.12s ease, background-color 0.2s ease;
}
.btn:active { transform: scale(0.98); opacity: 0.85; }
.btn:disabled { opacity: 0.45; cursor: default; transform: none; }
.btn .icon { width: 1.25rem; height: 1.25rem; }
.btn--filled { background: var(--blue); color: #fff; }
.btn--tinted { background: var(--blue-bg); color: var(--blue); }
.btn--grouped { background: var(--card); color: var(--blue); box-shadow: var(--shadow); }
.btn--plain { background: none; color: var(--blue); min-height: 2.75rem; font-weight: 400; }
.btn--plain.btn--strong { font-weight: 600; }

.btn-stack { display: grid; gap: 0.625rem; margin-top: 1.25rem; }
.btn-stack .btn--plain { margin-top: 0.125rem; }

.icon-btn {
  appearance: none;
  width: 2.75rem;
  height: 2.75rem;
  flex: none;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--blue);
  cursor: pointer;
}
.icon-btn:active { opacity: 0.5; }
.icon-btn .icon { width: 1.75rem; height: 1.75rem; }
.icon-btn--small { width: 2.75rem; height: 2.75rem; color: var(--secondary-label); }
.icon-btn--small .icon { width: 1.125rem; height: 1.125rem; stroke-width: 2.4; }

/* ---------- Inset grouped lists ---------- */
.inset-group {
  background: var(--card);
  border-radius: var(--radius-group);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.inset-group > * + * { border-top: 0.5px solid var(--separator); }
.inset-group > li + li { border-top: 0.5px solid var(--separator); }

.row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  min-height: 2.75rem;
  padding: 0.6875rem 1rem;
  background: none;
  border: 0;
  color: var(--label);
  text-align: left;
  text-decoration: none;
  font-size: 1.0625rem;
  -webkit-user-select: none;
  user-select: none;
}
.row--static { cursor: default; }
.row--stack { flex-direction: column; align-items: stretch; gap: 0.5rem; }
.row__text { flex: 1; min-width: 0; }
.row__value { color: var(--secondary-label); font-variant-numeric: tabular-nums; }
.row__icon { width: 1.5rem; height: 1.5rem; border-radius: 50%; display: grid; place-items: center; flex: none; }
.row__icon--ok { background: var(--green); color: #fff; }
.row__icon--ok .icon { width: 0.9375rem; height: 0.9375rem; }
button.row, a.row { cursor: pointer; }
button.row:active, a.row:active, .row--pressable:active { background: var(--pressed); }
.row--danger { color: var(--red); justify-content: center; font-weight: 400; }
.row--link { color: var(--blue); }
.row--link .icon { width: 1.125rem; height: 1.125rem; margin-left: auto; color: var(--blue); }

/* Disclosure rows in Settings */
.row-details summary { list-style: none; cursor: pointer; }
.row-details summary::-webkit-details-marker { display: none; }
.row-details summary .chev { transition: transform 0.25s var(--ease-sheet); }
.row-details[open] summary .chev { transform: rotate(90deg); }
.row-details summary:active { background: var(--pressed); }
.row-details__body { padding: 0 1rem 0.875rem; font-size: 0.9375rem; line-height: 1.45; color: var(--secondary-label); }

/* ---------- Recent ---------- */
.recent .inset-group { margin: 0; }
.row--recent { gap: 0.875rem; padding: 0.5rem 1rem; min-height: 4rem; }
.row--recent .thumb {
  width: 3rem; height: 3rem; border-radius: 8px; object-fit: cover; flex: none;
  background: var(--fill);
}
.row--recent .row__main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.125rem; }
.row__name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 1.0625rem; }
.row__sub { font-size: 0.8125rem; color: var(--secondary-label); }

/* ---------- Tier pills ---------- */
.tier {
  flex: none;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.3125rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}
.tier[data-tier="readable"] { color: var(--green-text); background: var(--green-bg); }
.tier[data-tier="marginal"] { color: var(--orange-text); background: var(--orange-bg); }
.tier[data-tier="unreadable"] { color: var(--gray-text); background: var(--gray-bg); }

/* ---------- Processing ---------- */
.poster {
  margin: 0.5rem 0 1.25rem;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  aspect-ratio: 16 / 9;
  max-height: 38vh;
  display: grid;
  place-items: center;
}
.poster img { width: 100%; height: 100%; object-fit: contain; display: block; }

.progress-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0 0.25rem;
  margin-bottom: 0.5rem;
}
.progress-label { font-size: 1rem; font-weight: 600; }
.progress-pct { font-size: 0.9375rem; color: var(--secondary-label); font-variant-numeric: tabular-nums; }

.progressbar {
  position: relative;
  height: 0.3125rem;
  border-radius: 999px;
  background: var(--fill);
  overflow: hidden;
  margin: 0 0.25rem 1.25rem;
}
.progressbar--small { margin: 0.25rem 0 0.25rem; height: 0.3125rem; }
.progress-eta {
  margin: -0.75rem 0.25rem 1.25rem;
  font-size: 0.8125rem;
  color: var(--secondary-label);
  font-variant-numeric: tabular-nums;
}
.progressbar__fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--blue);
  transition: width 0.3s linear;
}

.stage-list { margin-bottom: 0; }
.stage-row {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-height: 3rem;
  padding: 0.6875rem 1rem;
}
.stage-text { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.stage-name { font-size: 1.0625rem; }
.stage-sub { font-size: 0.8125rem; color: var(--secondary-label); min-height: 1em; font-variant-numeric: tabular-nums; }
.stage-icon {
  width: 1.5rem; height: 1.5rem; flex: none;
  border-radius: 50%;
  display: grid; place-items: center;
  box-shadow: inset 0 0 0 2px var(--fill);
}
.stage-row[data-state="pending"] .stage-name { color: var(--secondary-label); }
.stage-row[data-state="active"] .stage-icon {
  box-shadow: none;
  border: 2.25px solid var(--fill);
  border-top-color: var(--blue);
  animation: spin 0.85s linear infinite;
}
.stage-row[data-state="done"] .stage-icon { background: var(--green); box-shadow: none; color: #fff; }
.stage-row[data-state="done"] .stage-icon::after {
  content: "";
  width: 0.3125rem; height: 0.6rem;
  border: solid #fff; border-width: 0 2px 2px 0;
  transform: translate(-0.0625rem, -0.0625rem) rotate(45deg);
}
.stage-row[data-state="done"] .stage-sub { display: none; }
.stage-row[data-state="done"] .stage-name { color: var(--label); }
.stage-row[data-state="active"] .stage-name { font-weight: 600; }

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

/* ---------- State cards (empty, error, unsupported) ---------- */
.state {
  margin-top: 0.5rem;
  padding: 1.5rem 1.25rem 1.25rem;
  text-align: center;
}
.state + .footnote, .state + .btn-stack { margin-top: 0.75rem; }
.state__icon {
  width: 3.5rem; height: 3.5rem;
  margin: 0 auto 0.875rem;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--orange-bg);
  color: var(--orange-text);
}
.state__icon .icon { width: 1.75rem; height: 1.75rem; }
.state__icon[data-tone="gray"] { background: var(--gray-bg); color: var(--gray-text); }
.state__icon[data-tone="red"] { background: rgba(255, 59, 48, 0.16); color: var(--red); }
.state__title { font-size: 1.1875rem; font-weight: 700; line-height: 1.25; margin-bottom: 0.375rem; }
.state__text {
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--secondary-label);
  max-width: 21rem;
  margin: 0 auto;
}
.state__actions { display: grid; gap: 0.5rem; margin-top: 1.125rem; }

/* ---------- Results: player ---------- */
.player { margin: 0.25rem 0 0; }
.stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 58vh;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  margin: 0 auto;
}
.stage video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #000;
}
.overlay { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

.face-box {
  position: absolute;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-radius: 8px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35);
}
.caption {
  position: absolute;
  left: 0; top: 0;
  max-width: calc(100% - 1rem);
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  background: var(--pill-bg);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  backdrop-filter: blur(12px) saturate(180%);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  will-change: transform;
}
.caption .w { opacity: 0.72; }
.caption .w.is-current { opacity: 1; font-weight: 700; }
.caption .w.is-low { font-weight: 400; }

.transport {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.375rem;
}
.transport .icon-btn { color: var(--blue); }
.transport .icon-btn .icon { width: 1.625rem; height: 1.625rem; }

input[type="range"] {
  flex: 1;
  min-width: 0;
  height: 2.75rem;
  margin: 0;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  --p: 0%;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 0.25rem;
  border-radius: 999px;
  background: linear-gradient(to right, var(--blue) var(--p), var(--fill) var(--p));
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.75rem; height: 1.75rem;
  margin-top: -0.75rem;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3), 0 0 0 0.5px rgba(0, 0, 0, 0.06);
}
input[type="range"]::-moz-range-track { height: 0.25rem; border-radius: 999px; background: var(--fill); }
input[type="range"]::-moz-range-progress { height: 0.25rem; border-radius: 999px; background: var(--blue); }
input[type="range"]::-moz-range-thumb {
  width: 1.75rem; height: 1.75rem; border: 0; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.time {
  flex: none;
  min-width: 5.25rem;
  text-align: right;
  font-size: 0.8125rem;
  color: var(--secondary-label);
  font-variant-numeric: tabular-nums;
  padding-right: 0.25rem;
}

.disclaimer {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  margin: 0.375rem 0 0;
  padding: 0 0.25rem;
  font-size: 0.8125rem;
  color: var(--secondary-label);
}
.disclaimer .icon { width: 1rem; height: 1rem; }

/* ---------- Segmented control ---------- */
.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 1.25rem;
  padding: 2px;
  border-radius: 9px;
  background: var(--fill-tertiary);
}
.segmented button {
  appearance: none;
  min-height: 2.75rem;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--label);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}
.segmented button[aria-pressed="true"] {
  background: var(--card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.16), 0 0 0 0.5px rgba(0, 0, 0, 0.04);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .segmented button[aria-pressed="true"] { background: #636366; }
}
:root[data-theme="dark"] .segmented button[aria-pressed="true"] { background: #636366; }
.segmented button:active { opacity: 0.6; }
.mode-note { padding: 0.5rem 0.25rem 0; }

/* ---------- Faces ---------- */
.faces { margin-top: 0; }
.face { overflow: hidden; }
.face__row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  min-height: 4.25rem;
  padding: 0.625rem 1rem;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
}
.face__row:active { background: var(--pressed); }
.face__row[disabled] { cursor: default; }
.face__row[disabled]:active { background: none; }
.face__thumb {
  width: 3rem; height: 3rem;
  border-radius: 10px;
  object-fit: cover;
  flex: none;
  background: var(--fill);
}
.face__main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.125rem; }
.face__name { font-size: 1.0625rem; font-weight: 600; }
.face__reasons {
  font-size: 0.8125rem;
  line-height: 1.3;
  color: var(--secondary-label);
  overflow: hidden;
  text-overflow: ellipsis;
}
.face__chev { transition: transform 0.25s var(--ease-sheet); }
.face__row[aria-expanded="true"] .face__chev { transform: rotate(90deg); }
.face__row[disabled] .face__chev { visibility: hidden; }

.face__body {
  padding: 0.25rem 1rem 1rem;
  border-top: 0.5px solid var(--separator);
  animation: fade-in 0.25s ease both;
}
.face__body[hidden] { display: none; }
.face__hint { padding: 0.75rem 0 0; font-size: 0.875rem; color: var(--secondary-label); line-height: 1.4; }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.utt { display: flex; gap: 0.75rem; padding: 0.5rem 0; }
.utt + .utt { border-top: 0.5px solid var(--separator); }
.utt__time {
  flex: none;
  width: 2.75rem;
  padding-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--secondary-label);
  font-variant-numeric: tabular-nums;
}
.words { display: flex; flex-wrap: wrap; gap: 0 0.125rem; min-width: 0; }

.word {
  position: relative;
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.3125rem 0.1875rem;
  margin: 0;
  border: 0;
  border-radius: 6px;
  background: none;
  font-size: 1.0625rem;
  line-height: 1.35;
  color: var(--label);
  cursor: pointer;
  transition: background-color 0.15s ease;
}
/* Enlarge the hit area to 44 pt tall without changing the layout. */
.word::before { content: ""; position: absolute; inset: -0.4375rem -0.125rem; }
.word:active { background: var(--fill); }
.word.is-low {
  font-weight: 300;
  opacity: 0.72;
  text-decoration: underline dotted;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25rem;
}
.word.is-now { background: var(--blue-bg); color: var(--blue); }
.word.is-now.is-low { opacity: 1; }
.word .tag {
  font-size: 0.625rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.1875rem 0.3125rem;
  border-radius: 999px;
  color: var(--blue);
  background: var(--blue-bg);
  white-space: nowrap;
}
.word.is-now .tag { background: var(--card); }
/* Words with other candidates: a faint dotted underline. Low words keep their own underline. */
.word.has-alts:not(.is-low) {
  text-decoration: underline dotted;
  text-decoration-color: var(--tertiary-label);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25rem;
}
.word[aria-expanded="true"] { background: var(--fill); }
.word .tag--edit { color: var(--secondary-label); background: var(--fill-tertiary); }
.word.is-now .tag--edit { background: var(--card); }

/* ---------- Word menu (popover on a transcript word) ---------- */
.wmenu {
  position: fixed;
  left: 0; top: 0;
  z-index: 30;
  width: 260px;
  max-width: calc(100vw - 16px);
  transform: translate(-9999px, 0);
  filter: var(--menu-shadow);   /* one shadow for the panel and the caret */
}
.wmenu[hidden] { display: none; }
.wmenu__caret {
  position: absolute;
  left: 0;
  width: 14px; height: 14px;
  margin-left: -7px;
  background: var(--menu-bg);
  border-radius: 2px;
  transform: rotate(45deg);
}
.wmenu[data-side="below"] .wmenu__caret { top: -7px; }
.wmenu[data-side="above"] .wmenu__caret { bottom: -7px; }
.wmenu__panel {
  position: relative;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  border-radius: 14px;
  background: var(--menu-bg);
  color: var(--label);
  outline: none;
}
.wmenu[data-side="below"] .wmenu__panel { transform-origin: 50% 0; }
.wmenu[data-side="above"] .wmenu__panel { transform-origin: 50% 100%; }
.wmenu:not([hidden]) .wmenu__panel { animation: wmenu-in 0.18s var(--ease-sheet) both; }
@keyframes wmenu-in { from { opacity: 0; scale: 0.94; } to { opacity: 1; scale: 1; } }

.wmenu__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6875rem 1rem 0.625rem;
}
.wmenu__word {
  min-width: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.3;
  overflow-wrap: anywhere;
}
.wmenu__cert {
  flex: none;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--secondary-label);
}
.wmenu__cert[data-tone="likely"] { color: var(--green-text); }
.wmenu__cert[data-tone="unsure"] { color: var(--orange-text); }

.wmenu__alts { border-top: 0.5px solid var(--separator); padding: 0.375rem 0 0.25rem; }
.wmenu__alts[hidden] { display: none; }
.wmenu__label {
  padding: 0.25rem 1rem 0.3125rem;
  font-size: 0.8125rem;
  color: var(--secondary-label);
}
.wmenu__row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  width: 100%;
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  border: 0;
  background: none;
  text-align: left;
  font-size: 1.0625rem;
  color: var(--label);
  cursor: pointer;
}
.wmenu__row + .wmenu__row::before {
  content: "";
  position: absolute;
  top: 0; left: 1rem; right: 0;
  height: 0.5px;
  background: var(--separator);
}
.wmenu__row:active, .wmenu__row:focus-visible { background: var(--fill); outline: none; }
.wmenu__alt { min-width: 0; overflow-wrap: anywhere; }
.wmenu__note {
  flex: none;
  padding: 0.125rem 0.375rem;
  border-radius: 999px;
  background: var(--fill-tertiary);
  color: var(--secondary-label);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.2;
}
.wmenu__pct {
  margin-left: auto;
  flex: none;
  font-size: 0.9375rem;
  color: var(--secondary-label);
  font-variant-numeric: tabular-nums;
}

/* ---------- Footer, toast, hint ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 1.5rem);
  transform: translateX(-50%);
  z-index: 70;
  max-width: calc(100% - 2.5rem);
  padding: 0.625rem 1.125rem;
  border-radius: 999px;
  background: var(--toast-bg);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: center;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
  animation: toast-in 0.3s var(--ease-sheet) both;
}
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 0.75rem); } to { opacity: 1; transform: translate(-50%, 0); } }

.hint {
  position: fixed;
  left: 0.75rem;
  right: 0.75rem;
  bottom: calc(env(safe-area-inset-bottom) + 0.75rem);
  z-index: 45;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  border-radius: 14px;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.16);
  animation: sheet-up 0.45s var(--ease-sheet) both;
}
.hint--inline {
  position: relative;
  left: auto; right: auto; bottom: auto;
  z-index: auto;
  margin-top: 1.25rem;
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  background: var(--card);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  box-shadow: var(--shadow);
  animation: none;
}
.hint__share { width: 1.25rem; height: 1.25rem; color: var(--blue); flex: none; }
.hint__text { flex: 1; font-size: 0.9375rem; line-height: 1.3; }

/* ---------- Sheets and alerts ---------- */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: var(--backdrop);
  animation: fade-in 0.3s ease both;
}
.backdrop--alert { z-index: 55; }

.sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 50;
  max-height: 90vh;
  max-height: 90dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--sheet-bg);
  border-radius: 14px 14px 0 0;
  box-shadow: 0 -6px 30px rgba(0, 0, 0, 0.14);
  animation: sheet-up 0.5s var(--ease-sheet) backwards;
  outline: none;
}
.sheet--tall { max-height: 94vh; max-height: 94dvh; }
.sheet.is-closing { animation: sheet-down 0.3s ease-in both; }
.sheet.is-dragging { transition: none; }
[data-drag-handle] { touch-action: none; cursor: grab; }

/* First-run sheet: the primary and secondary actions stay pinned at the bottom, so Cancel is always in reach */
.sheet--welcome { padding-bottom: 0; }
.sheet--welcome .sheet__body { padding-bottom: 0; }
.sheet--welcome .btn-stack {
  position: sticky;
  bottom: 0;
  z-index: 2;
  margin-top: 0.75rem;
  padding: 0.5rem 0 calc(1rem + env(safe-area-inset-bottom));
  background: var(--sheet-bg);
}

@keyframes sheet-up { from { transform: translateY(100%); } to { transform: translateY(0); } }
@keyframes sheet-down { from { transform: translateY(0); } to { transform: translateY(100%); } }

.grabber {
  width: 2.25rem;
  height: 0.3125rem;
  margin: 0.5rem auto 0.25rem;
  border-radius: 3px;
  background: var(--tertiary-label);
}

.sheet__body { padding: 0.25rem 1rem calc(1rem + env(safe-area-inset-bottom)); }
.sheet__title {
  margin: 0.5rem 0.5rem 0.375rem;
  text-align: center;
  font-size: 1.375rem;           /* 22 pt */
  font-weight: 700;
  line-height: 1.2;
  outline: none;
}
.sheet__lead {
  margin: 0 1rem 1.125rem;
  text-align: center;
  font-size: 0.9375rem;
  line-height: 1.4;
  color: var(--secondary-label);
}
.sheet .sheet__body > .inset-group { margin-bottom: 0; }

.app-glyph {
  width: 4.25rem;
  height: 4.25rem;
  margin: 0.5rem auto 0.875rem;
  border-radius: 1.0625rem;
  background: var(--blue);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 16px rgba(0, 122, 255, 0.25);
}
.app-glyph .icon { width: 2.5rem; height: 2.5rem; fill: #fff; stroke: none; }
.app-glyph .glyph-line { stroke: var(--blue); }

.info-row {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
}
.info-icon {
  width: 1.875rem;
  height: 1.875rem;
  flex: none;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--blue-bg);
  color: var(--blue);
}
.info-icon .icon { width: 1.0625rem; height: 1.0625rem; stroke-width: 2.2; }
.info-icon[data-tone="orange"] { background: var(--orange-bg); color: var(--orange-text); }
.info-icon[data-tone="gray"] { background: var(--gray-bg); color: var(--gray-text); }
.info-text { display: flex; flex-direction: column; gap: 0.125rem; min-width: 0; }
.info-title { font-size: 0.9375rem; font-weight: 600; }
.info-body { font-size: 0.875rem; line-height: 1.35; color: var(--secondary-label); }

.sheet__nav {
  position: sticky;
  top: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 2.75rem;
  padding: 0 0.5rem;
  background: var(--sheet-bg);
  border-bottom: 0.5px solid var(--separator);
}
.sheet__nav-title { font-size: 1.0625rem; font-weight: 600; text-align: center; outline: none; }
.sheet__nav-spacer { display: block; }

.textarea-row { display: block; }
.textarea {
  display: block;
  width: 100%;
  min-height: 6rem;
  padding: 0.75rem 1rem;
  border: 0;
  background: transparent;
  color: var(--label);
  font: inherit;
  font-size: 1.0625rem;
  line-height: 1.4;
  resize: none;
}
.textarea::placeholder { color: var(--tertiary-label); opacity: 1; }
.textarea-row:focus-within, .textarea:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }

.switch {
  appearance: none;
  position: relative;
  flex: none;
  width: 3.25rem;
  height: 1.9375rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: var(--fill);
  cursor: pointer;
  transition: background-color 0.25s ease;
}
.switch[aria-checked="true"] { background: var(--green); }
.switch__thumb {
  position: absolute;
  top: 2px; left: 2px;
  width: 1.6875rem; height: 1.6875rem;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15), 0 1px 1px rgba(0, 0, 0, 0.16);
  transition: transform 0.25s var(--ease-sheet);
}
.switch[aria-checked="true"] .switch__thumb { transform: translateX(1.3125rem); }

/* Progress inside the first-run sheet */
.dl-error { color: var(--orange-text); }

.alert {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 60;
  width: min(16.875rem, calc(100vw - 3rem));
  border-radius: 14px;
  background: var(--sheet-bg);
  text-align: center;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
  animation: alert-in 0.25s var(--ease-sheet) both;
}
@keyframes alert-in { from { opacity: 0; transform: translate(-50%, -50%) scale(1.08); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
.alert__title { padding: 1.125rem 1rem 0.25rem; font-size: 1.0625rem; font-weight: 600; }
.alert__text { padding: 0 1rem 1.125rem; font-size: 0.8125rem; line-height: 1.35; color: var(--label); }
.alert__actions { display: grid; grid-template-columns: 1fr 1fr; border-top: 0.5px solid var(--separator); }
.alert__btn {
  appearance: none;
  min-height: 2.75rem;
  padding: 0.6875rem 0.5rem;
  border: 0;
  background: none;
  color: var(--blue);
  font-size: 1.0625rem;
  font-weight: 600;
  cursor: pointer;
}
.alert__btn + .alert__btn { border-left: 0.5px solid var(--separator); }
.alert__btn:active { background: var(--pressed); }
.alert__btn--danger { color: var(--red); font-weight: 600; }
.alert__btn--danger { color: var(--red); }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .stage-row[data-state="active"] .stage-icon {
    animation: pulse 1.6s ease-in-out infinite !important;
    border-top-color: var(--fill);
    border-color: var(--blue);
  }
}
@keyframes pulse { 50% { opacity: 0.35; } }

/* ---------- Wider screens ---------- */
@media (min-width: 640px) {
  .screen { padding: 0 1.5rem; }
}