/**
 * Product-shell refinement layer.
 *
 * This file deliberately sits after player.css. The renderer and visual
 * recipes retain their established design system; these rules improve the
 * live product shell, accessibility, reflow, and touch ergonomics without
 * coupling those concerns back into the player core.
 */

html {
  min-width: 20rem;
  scroll-behavior: smooth;
  scroll-padding-block: 5rem;
}

body {
  min-width: 20rem;
  min-height: 100dvh;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select,
input[type="range"] {
  touch-action: manipulation;
}

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

.skip-link {
  position: fixed;
  inset-block-start: max(0.75rem, env(safe-area-inset-top));
  inset-inline-start: max(0.75rem, env(safe-area-inset-left));
  z-index: 100;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  padding-inline: 1rem;
  border: 1px solid var(--wa-ink-muted);
  border-radius: 999px;
  background: var(--wa-stage-raised);
  color: var(--wa-ink);
  font-weight: 650;
  text-decoration: none;
  transform: translateY(calc(-100% - 2rem));
  transition: transform 160ms var(--ease-out);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

.app :is(button, input, select, textarea):focus-visible,
.skip-link:focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: 3px;
}

#stage-area:focus-visible,
#followups:focus-visible,
#history-list:focus-visible,
#github:focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: 4px;
  border-radius: 20px;
}

.app[data-mode] {
  padding-inline-start: max(1.5rem, env(safe-area-inset-left));
  padding-inline-end: max(1.5rem, env(safe-area-inset-right));
}

.app[data-mode="empty"] {
  width: 100%;
  max-width: 82rem;
  margin-inline: auto;
  padding-block-start: max(1.25rem, env(safe-area-inset-top));
  padding-block-end: max(4rem, env(safe-area-inset-bottom));
  grid-template-rows: auto auto 1fr;
  gap: 0;
}

.app[data-mode="empty"] > .pc-header {
  margin-bottom: clamp(3.25rem, 8vh, 6.5rem);
}

.app > .pc-header {
  min-height: 3.25rem;
}

.pc-brand {
  min-height: 2.75rem;
  margin-inline-start: -0.65rem;
  padding-inline: 0.65rem 0.75rem;
  border-radius: 999px;
  transition-property: background-color, transform;
  transition-duration: 140ms;
  transition-timing-function: var(--ease-out);
}

.pc-brand-name {
  color: var(--wa-ink);
  font-family: var(--wa-font-heading);
  font-size: 0.94rem;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.pc-header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.65rem;
  min-width: 0;
}

.session-actions {
  position: relative;
}

.session-actions-menu {
  position: absolute;
  z-index: var(--wa-z-popover);
  inset-block-start: calc(100% + 0.5rem);
  inset-inline-end: 0;
  width: 14.5rem;
  padding: 0.35rem;
  border: 1px solid color-mix(in srgb, var(--wa-line) 65%, var(--wa-ink-muted));
  border-radius: 14px;
  background: var(--wa-stage-raised);
  box-shadow: var(--wa-shadow-overlay);
}

.session-actions-menu > :is(button, a) {
  width: 100%;
  min-height: 2.75rem;
  display: grid;
  grid-template-columns: 1.25rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.65rem;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--wa-ink-muted);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 620;
  text-align: start;
  text-decoration: none;
  cursor: pointer;
}

.session-actions-menu small {
  color: var(--wa-ink-faint);
  font-size: 0.68rem;
  font-weight: 520;
}

.session-menu-icon,
.reference-context-icon {
  width: 1rem;
  height: 1rem;
  display: block;
  background-color: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}

.session-actions-menu > :is(button, a):focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: -2px;
}

/* Testing-only TTS provider switch -- not part of the shipped product UI. */
.tts-provider-picker {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--wa-ink-muted);
}

.tts-provider-picker select {
  border: 1px solid var(--wa-line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--wa-stage-raised) 88%, transparent);
  color: var(--wa-ink-muted);
  font-size: 0.78rem;
  padding: 0.2rem 0.5rem;
}

.header-action {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding-inline: 0.9rem;
  border: 1px solid var(--wa-line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--wa-stage-raised) 88%, transparent);
  color: var(--wa-ink-muted);
  font-size: 0.86rem;
  font-weight: 650;
  cursor: pointer;
  transition-property: background-color, border-color, color, transform;
  transition-duration: 140ms;
  transition-timing-function: var(--ease-out);
}

.header-action-icon,
.prompt-submit-icon,
.starter-card-arrow {
  display: block;
  flex: none;
  width: 1rem;
  height: 1rem;
  background-color: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}

.app[data-mode="empty"] .header-action {
  display: none;
}
.app[data-mode="empty"] #github-toggle {
  display: inline-flex;
}

.empty-hero {
  display: grid;
  justify-items: center;
  gap: 0.7rem;
  max-width: 52rem;
  margin: 0 auto 1.65rem;
  text-align: center;
}

.empty-hero-title {
  max-width: 48rem;
  margin: 0;
  font-size: clamp(2.1rem, 6vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.empty-hero-copy {
  max-width: 42rem;
  margin: 0;
  color: var(--wa-ink-muted);
  font-size: clamp(1rem, 2vw, 1.13rem);
  line-height: 1.55;
  text-wrap: balance;
}

.app[data-mode="session"] .empty-hero,
.app[data-mode="session"] .starter-prompts {
  display: none;
}

.prompt-section,
.app[data-mode="empty"] .prompt-section {
  max-width: 64rem;
}

.prompt-field {
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.75rem;
  min-height: 4.75rem;
  padding: 0.65rem 0.7rem 0.65rem 0.9rem;
  border-color: color-mix(in srgb, var(--wa-line) 80%, var(--wa-ink-faint));
  border-radius: 24px;
  background:
    linear-gradient(
      to bottom,
      color-mix(in srgb, var(--wa-stage-raised) 72%, transparent),
      color-mix(in srgb, var(--wa-stage-sunken) 96%, transparent)
    );
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--wa-ink) 7%, transparent),
    0 18px 50px color-mix(in srgb, var(--wa-stage-sunken) 52%, transparent);
  transition-property: border-color, box-shadow;
  transition-duration: 160ms;
  transition-timing-function: var(--ease-out);
}

.prompt-field:focus-within {
  outline: none;
  border-color: var(--wa-ink-faint);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--wa-ink) 9%, transparent),
    0 0 0 3px color-mix(in srgb, var(--wa-ink-muted) 22%, transparent),
    0 22px 64px color-mix(in srgb, var(--wa-stage-sunken) 58%, transparent);
}

.reference-context {
  margin: 0 0 0.55rem;
  border: 1px solid transparent;
  border-radius: 14px;
  color: var(--wa-ink-muted);
}

.reference-context[open] {
  border-color: var(--wa-line);
  background: color-mix(in srgb, var(--wa-stage-sunken) 90%, transparent);
}

.reference-context summary {
  min-height: 2.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.65rem;
  border-radius: 13px;
  color: var(--wa-ink-muted);
  font-size: 0.8rem;
  font-weight: 620;
  cursor: pointer;
  list-style: none;
}

.reference-context summary::-webkit-details-marker { display: none; }

.reference-context summary:focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: 2px;
}

.reference-context-state {
  margin-inline-start: auto;
  color: var(--wa-ink-faint);
  font-size: 0.72rem;
  font-weight: 520;
}

.reference-context-body {
  display: grid;
  gap: 0.45rem;
  padding: 0 0.65rem 0.65rem;
}

.reference-context-body label {
  color: var(--wa-ink-faint);
  font-size: 0.74rem;
}

.reference-context-body textarea {
  width: 100%;
  min-height: 7rem;
  resize: vertical;
  padding: 0.75rem;
  border: 1px solid var(--wa-line);
  border-radius: 10px;
  background: var(--wa-stage);
  color: var(--wa-ink);
  font: inherit;
  font-size: 0.88rem;
  line-height: 1.5;
}

.reference-context-body textarea:focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: 2px;
}

.reference-context-body p {
  margin: 0;
  color: var(--wa-ink-faint);
  font-size: 0.72rem;
  line-height: 1.45;
}

.app:not([data-mode="empty"]) .reference-context {
  display: none;
}

.resume-explanation {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding: 0.65rem 0;
  color: var(--wa-ink-muted);
  font-size: 0.82rem;
}

.resume-explanation-button {
  margin-inline-start: auto;
  white-space: nowrap;
}

.lesson-feedback {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-top: 0.25rem;
  color: var(--wa-ink-faint);
  font-size: 0.8rem;
}

.lesson-feedback strong {
  margin-inline-end: 0.15rem;
  color: var(--wa-ink-muted);
  font-size: 0.8rem;
}

.lesson-feedback button {
  min-height: 2.75rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--wa-line);
  border-radius: 999px;
  background: transparent;
  color: var(--wa-ink-muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
}

.lesson-feedback button:focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: 2px;
}

.lesson-feedback-reasons {
  flex-basis: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.lesson-feedback[data-complete="true"] {
  color: var(--wa-ink-muted);
}

.level {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--wa-ink-faint);
}

.level::after {
  content: "";
  position: absolute;
  inset-inline-end: 0.8rem;
  width: 0.4rem;
  height: 0.4rem;
  border-inline-end: 1px solid currentColor;
  border-block-end: 1px solid currentColor;
  transform: translateY(-0.12rem) rotate(45deg);
  pointer-events: none;
}

.level select {
  min-height: 2.75rem;
  padding: 0 2rem 0 0.85rem;
  border-color: color-mix(in srgb, var(--wa-line) 78%, transparent);
  background: var(--wa-stage-raised);
  font-size: 0.8rem;
  font-weight: 620;
}

.prompt-input {
  min-height: 3.45rem;
  max-height: 10rem;
  padding-block: 0.65rem;
  overflow-y: auto;
  font-size: 1.02rem;
  line-height: 1.45;
  scrollbar-width: thin;
  scrollbar-color: var(--wa-line) transparent;
}

.prompt-submit {
  min-width: 7rem;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding-inline: 1.2rem;
  font-size: 0.9rem;
}

.voice-input {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--wa-line);
  border-radius: 999px;
  background: transparent;
  color: var(--wa-ink-muted);
  cursor: pointer;
}

.voice-input [data-icon] {
  width: 1.05rem;
  height: 1.05rem;
}

.voice-input:focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: 2px;
}

.voice-input[data-voice-state="checking-permission"],
.voice-input[data-voice-state="starting"],
.voice-input[data-voice-state="listening"],
.voice-input[data-voice-state="stopping"] {
  border-color: color-mix(in srgb, var(--wa-now) 58%, var(--wa-line));
  background: color-mix(in srgb, var(--wa-now) 14%, var(--wa-stage));
  color: var(--wa-now);
}

.voice-input[data-voice-state="listening"] {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--wa-now) 18%, transparent);
}

.voice-input[data-voice-state="error"] {
  border-color: color-mix(in srgb, var(--wa-alert) 58%, var(--wa-line));
  color: var(--wa-alert);
}

.voice-input:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.voice-privacy {
  margin: 0.35rem 0 0;
  padding-inline: 0.65rem;
  color: var(--wa-ink-faint);
  font-size: 0.7rem;
  line-height: 1.4;
}

.voice-privacy[hidden] {
  display: none;
}

.prompt-submit-icon {
  width: 0.95rem;
  height: 0.95rem;
  transition: transform 140ms var(--ease-out);
}

.app[data-mode="session"] .prompt-section {
  padding-top: 0.65rem;
}

.app[data-mode="session"] .prompt-field {
  min-height: 3.5rem;
  padding: 0.35rem 0.45rem 0.35rem 0.75rem;
  border-radius: 20px;
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--wa-ink) 5%, transparent);
}

.app[data-mode="session"] .prompt-input {
  min-height: 2.75rem;
  max-height: 6.5rem;
  padding-block: 0.6rem;
}

.app[data-mode="session"] .prompt-submit {
  min-height: 2.75rem;
  padding-inline: 1rem;
}

.history-heading {
  margin: 0 0 0.8rem;
  padding-inline: 0.15rem;
  color: var(--wa-ink-faint);
  font-family: var(--wa-font-heading);
  font-size: 0.78rem;
  font-weight: 720;
  letter-spacing: 0.075em;
  line-height: 1.3;
  text-transform: uppercase;
}

.starter-prompts {
  grid-column: 1 / -1;
  max-width: none;
  margin: 0.1rem 0 0.15rem;
}

.prompt-field[data-filled="true"] .starter-prompts {
  display: none;
}

.starter-prompts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem;
}

.starter-card[data-suggested="true"] {
  border-color: color-mix(in srgb, var(--wa-ink-muted) 55%, var(--wa-line));
  background: color-mix(in srgb, var(--wa-stage-raised) 88%, var(--wa-ink-faint));
  color: var(--wa-ink);
}

.starter-card {
  position: relative;
  min-width: 0;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 0.4rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--wa-line) 64%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--wa-stage-raised) 70%, transparent);
  color: var(--wa-ink-muted);
  text-align: start;
  cursor: pointer;
  transition-property: background-color, border-color, color, opacity;
  transition-duration: 150ms;
  transition-timing-function: var(--ease-out);
}

.starter-card:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.starter-card-icon,
.starter-card-arrow {
  display: none;
}

.starter-card-copy {
  min-width: 0;
}

.starter-card-title {
  color: inherit;
  font-size: 0.86rem;
  font-weight: 550;
  letter-spacing: -0.01em;
  line-height: 1.3;
  text-wrap: pretty;
}

.history-area {
  max-width: 72rem;
  margin-top: clamp(3rem, 8vh, 6rem);
  padding-top: 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--wa-line) 72%, transparent);
}

.history-list {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
}

.history-loading {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--wa-ink-muted);
  font-size: 0.92rem;
}

.history-empty {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--wa-ink-muted);
  font-size: 0.92rem;
}

.history-status {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.65rem;
  justify-items: start;
}

.history-error {
  margin: 0;
  color: var(--wa-alert);
  font-size: 0.92rem;
}

.history-retry {
  min-block-size: 2.75rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid color-mix(in srgb, var(--wa-line) 72%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--wa-stage-raised) 82%, transparent);
  color: var(--wa-ink);
  cursor: pointer;
  transition-property: background-color, border-color, color;
  transition-duration: 150ms;
  transition-timing-function: var(--ease-out);
}

.history-retry:hover {
  background: color-mix(in srgb, var(--wa-stage-raised) 96%, var(--wa-ink) 4%);
  border-color: color-mix(in srgb, var(--wa-line) 55%, var(--wa-ink-muted));
}

.history-retry:focus-visible {
  outline: 3px solid var(--wa-ink-muted);
  outline-offset: 2px;
}

.history-item {
  min-height: 8.25rem;
  border-radius: 16px;
}

.stage-status {
  gap: 0.7rem;
}

.stage-status-text {
  color: var(--wa-ink);
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  font-weight: 670;
  letter-spacing: -0.015em;
}

.stage-frame[data-pending="error"] .stage-status-text {
  color: var(--wa-alert);
}

.thinking-orb {
  width: 5rem;
  height: 5rem;
}

.level select,
.speed select,
.prompt-submit,
.pc-followup,
.pc-choice,
.header-action,
.starter-card,
.history-item,
.transcript-close {
  min-block-size: 2.75rem;
}

#scrubber {
  min-height: 2.75rem;
  height: 2.75rem;
  background:
    linear-gradient(var(--wa-ink-faint), var(--wa-ink-faint)) center / 100% 3px no-repeat;
}

#scrubber::-webkit-slider-thumb {
  margin-top: 0;
}

.speed select {
  min-width: 3.5rem;
  min-height: 2.75rem;
  padding-inline: 0.55rem;
}

/* Secondary transport icons that are bare data-icon spans. Give their
   mask a concrete box so captions and depth controls remain visible beside
   the clock, mute, and speed selector. */
.transport-btn > [data-icon] {
  inline-size: 1.1rem;
  block-size: 1.1rem;
}

.pc-followup,
.pc-choice {
  display: flex;
  align-items: center;
}

.app[data-mode="session"] .transcript-area {
  position: fixed;
  inset-block-start: max(4.5rem, env(safe-area-inset-top));
  inset-block-end: max(1rem, env(safe-area-inset-bottom));
  inset-inline-end: max(1rem, env(safe-area-inset-right));
  z-index: var(--wa-z-dialog);
  width: min(29rem, calc(100vw - 2rem));
  max-height: none;
  padding: 1rem;
  border-color: color-mix(in srgb, var(--wa-line) 78%, var(--wa-ink-faint));
  border-radius: 20px;
  background: var(--wa-stage-raised);
  box-shadow: var(--wa-shadow-dialog);
  overscroll-behavior: contain;
}

body:has(.app[data-mode="session"] .transcript-area:not([hidden]))::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--wa-z-overlay-backdrop);
  background: color-mix(in srgb, var(--wa-stage) 62%, transparent);
  pointer-events: none;
}

.transcript-panel-header {
  position: sticky;
  inset-block-start: -1rem;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: -1rem -1rem 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--wa-line);
  background: var(--wa-stage-raised);
}

.transcript-panel-title {
  margin: 0;
  font-family: var(--wa-font-heading);
  font-size: 0.95rem;
  font-weight: 700;
}

.transcript-close {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--wa-ink-muted);
  cursor: pointer;
}

.transcript-close .wa-icon {
  width: 1.05rem;
  height: 1.05rem;
}

@media (hover: hover) and (pointer: fine) {
  .pc-brand:hover,
  .header-action:hover,
  .transcript-close:hover {
    background: var(--wa-stage-raised);
  }

  .header-action:hover {
    border-color: var(--wa-ink-faint);
    color: var(--wa-ink);
  }

  .session-actions-menu > :is(button, a):hover,
  .lesson-feedback button:hover,
  .reference-context summary:hover {
    background: color-mix(in srgb, var(--wa-stage) 70%, var(--wa-ink) 4%);
    color: var(--wa-ink);
  }

  .prompt-submit:not(:disabled):hover .prompt-submit-icon {
    transform: translateX(2px);
  }

  .starter-card:hover {
    border-color: var(--wa-ink-faint);
    background: color-mix(in srgb, var(--wa-stage-raised) 94%, var(--wa-ink) 3%);
    color: var(--wa-ink);
  }
}



@media (max-width: 48rem), (max-height: 44rem) {
  html {
    scroll-padding-block-end: 8rem;
  }

  .app[data-mode="session"] {
    height: auto;
    min-height: 100dvh;
    overflow: visible;
    grid-template-rows: auto auto auto auto auto;
    padding-block-start: max(0.5rem, env(safe-area-inset-top));
    padding-block-end: max(0.5rem, env(safe-area-inset-bottom));
  }

  .app[data-mode="session"] .stage-area {
    min-height: 18rem;
    height: min(58svh, 34rem);
  }

  .app[data-mode="session"] .stage-frame {
    height: 100%;
  }

  .app[data-mode="session"] .stage-area:has(.pc-animation) .stage-frame {
    width: 100%;
    max-height: 100%;
  }

  .app[data-mode="session"] .prompt-section {
    /* A bottom-sticky composer can cover the final follow-up on short mobile
       screens. Keep it in document flow once the fixed-height shell reflows. */
    position: static;
    inset-block-end: auto;
    z-index: auto;
    margin-inline: -0.75rem;
    padding: 0.6rem 0.75rem max(0.6rem, env(safe-area-inset-bottom));
    border-top-color: color-mix(in srgb, var(--wa-line) 82%, transparent);
    background: var(--wa-stage);
  }

  .app[data-mode="session"] .transcript-area {
    inset-block-start: auto;
    inset-block-end: max(0.75rem, env(safe-area-inset-bottom));
    inset-inline: max(0.75rem, env(safe-area-inset-left)) max(0.75rem, env(safe-area-inset-right));
    width: auto;
    max-height: min(72svh, 36rem);
  }

  .pc-header-title {
    display: none;
  }

  .controls {
    grid-template-columns: 2.75rem minmax(0, 1fr) auto auto 2.75rem 2.75rem;
    grid-template-areas:
      "toggle scrubber scrubber scrubber scrubber scrubber"
      ". clock speed mute captions deepen";
  }

  #mute-toggle {
    grid-area: mute;
  }

  #deepen {
    grid-area: deepen;
  }
}

@media (max-width: 40rem) {
  .app[data-mode="empty"] {
    padding-inline-start: max(1rem, env(safe-area-inset-left));
    padding-inline-end: max(1rem, env(safe-area-inset-right));
  }

  .app[data-mode="empty"] > .pc-header {
    margin-bottom: clamp(2.5rem, 7vh, 4rem);
  }

  .empty-hero-title {
    font-size: clamp(2rem, 12vw, 3.35rem);
  }

  .starter-prompts-grid {
    grid-template-columns: 1fr;
  }

  .history-area {
    margin-top: 3.25rem;
  }
}

@media (max-width: 30rem) {
  .pc-header-title {
    font-size: 0.78rem;
  }

  .header-action {
    width: 2.75rem;
    padding: 0;
  }

  .header-action > span:last-child {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .prompt-field {
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 0.55rem;
  }

  .level {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .prompt-input {
    grid-column: 1;
  }

  .prompt-submit {
    grid-column: 3;
    min-width: 2.75rem;
    width: 2.75rem;
    padding: 0;
  }

  .starter-prompts {
    grid-column: 1 / -1;
  }

  .prompt-submit > span:first-child {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .app[data-mode="session"] .prompt-field {
    grid-template-columns: minmax(0, 1fr) auto auto;
  }
}

@media (max-width: 22rem) {
  .pc-brand-name {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .app *,
  .app *::before,
  .app *::after,
  .skip-link {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (forced-colors: active) {
  .app :is(button, input, select, textarea):focus-visible,
  .skip-link:focus-visible {
    outline-color: Highlight;
  }

  .prompt-field,
  .starter-card,
  .history-item,
  .transcript-area {
    border-color: CanvasText;
  }
}