/* Layout and components. Every colour, radius and spacing comes from theme.css. */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--ground);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--size-body);
  line-height: 1.35;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
  color: inherit;
}

#app {
  height: 100%;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) 0 env(safe-area-inset-left);
}

.screen {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* ---------------------------------------------------------------- top bar & crumbs */

.topbar {
  padding: var(--space-tight) var(--space-card) var(--space-tight);
}

.crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin: 0 calc(-1 * var(--space-tight));
}

.crumb {
  min-height: 44px;
  padding: 0 var(--space-tight);
  border: 0;
  border-radius: var(--radius-row);
  background: none;
  color: var(--accent);
  font-size: var(--size-body);
  font-weight: 600;
}

.crumb:active {
  background: var(--fill);
}

.crumb-sep {
  color: var(--faint);
  font-size: var(--size-meta);
}

.title {
  margin: 0;
  padding: var(--space-tight) 0 0;
  font-size: var(--size-title);
  font-weight: 800;
  letter-spacing: -0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------------------------------------------------------------- scroll & list */

.scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  -webkit-overflow-scrolling: touch;
  padding: 0 var(--space-card) var(--space-card);
  display: flex;
  flex-direction: column;
}

.pull {
  height: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--faint);
  font-size: var(--size-meta);
  transition: height 0.18s ease;
}

.pull-ready {
  color: var(--accent);
  font-weight: 600;
}

.list {
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
  padding-top: var(--space-tight);
}

.row {
  display: flex;
  align-items: center;
  gap: var(--space-gap);
  min-height: 64px;
  padding: var(--space-gap) var(--space-card);
  border-radius: var(--radius-card);
  background: var(--panel);
  border: 1.5px solid transparent;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: manipulation;
  cursor: default;
  transition: transform 0.12s ease, background-color 0.12s ease, border-color 0.12s ease;
}

.row[role='button']:active {
  background: var(--panel-top);
  transform: scale(0.985);
}

.row:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.row-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.row-name {
  font-size: var(--size-option);
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.row-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-tight);
  font-size: var(--size-meta);
  color: var(--faint);
}

.row-folder {
  background: var(--fill);
}

.row-continue {
  background: var(--panel-top);
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  margin-bottom: var(--space-tight);
}

.continue-label {
  font-size: var(--size-label);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan);
}

.continue-go {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--gradient-primary);
}

.icon-play {
  width: 20px;
  height: 20px;
  color: #fff;
  fill: currentColor;
  stroke-width: 1.5;
}

.row-selected {
  border-color: var(--accent);
  background: var(--panel-top);
}

.row-corrupt {
  background: color-mix(in srgb, var(--warn) 12%, var(--panel));
  border-color: color-mix(in srgb, var(--warn) 45%, transparent);
}

.row-corrupt .row-meta {
  color: var(--warn);
}

.tag-new {
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  background: var(--cyan);
  color: var(--ground);
  font-size: var(--size-label);
  font-weight: 700;
}

.icon {
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-folder {
  width: 26px;
  height: 26px;
  color: var(--accent);
}

.icon-chevron {
  width: 18px;
  height: 18px;
  color: var(--faint);
}

.check {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-pill);
  border: 2px solid var(--faint);
  display: flex;
  align-items: center;
  justify-content: center;
}

.check-on {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--ground);
}

.icon-check {
  width: 16px;
  height: 16px;
  stroke-width: 3;
}

/* session progress inside a bank row */

.session {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 4px;
}

.session-track {
  height: 5px;
  border-radius: var(--radius-pill);
  background: var(--track);
  overflow: hidden;
}

.session-fill {
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--gradient-progress);
}

.session-text {
  font-size: var(--size-label);
  color: var(--warn);
}

/* ---------------------------------------------------------------- mastery ring */

.ring {
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring svg {
  position: absolute;
  inset: 0;
}

.ring-track {
  stroke: var(--line);
}

.ring-label {
  position: relative;
  font-size: var(--size-label);
  font-weight: 700;
  color: var(--text);
}

.ring-empty {
  color: var(--faint);
}

/* ---------------------------------------------------------------- pill buttons */

.pill {
  min-height: 44px;
  padding: 0 22px;
  border: 0;
  border-radius: var(--radius-pill);
  font-size: var(--size-body);
  font-weight: 700;
  white-space: nowrap;
  touch-action: manipulation;
  transition: transform 0.12s ease, opacity 0.12s ease;
}

.pill:active:not(:disabled) {
  transform: scale(0.96);
}

.pill:disabled {
  opacity: 0.4;
}

.pill:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.pill-primary {
  background: var(--accent);
  color: var(--ground);
}

.pill-secondary {
  background: var(--fill-strong);
  color: var(--text);
}

.pill-ghost {
  background: none;
  color: var(--dim);
}

.pill-good {
  background: var(--good);
  color: var(--ground);
}

.pill-bad {
  background: var(--bad);
  color: var(--ground);
}

/* ---------------------------------------------------------------- banners */

.banners {
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
  padding: 0 var(--space-card);
}

.banners:empty {
  display: none;
}

.banner {
  display: flex;
  align-items: center;
  gap: var(--space-gap);
  padding: var(--space-tight) var(--space-tight) var(--space-tight) var(--space-card);
  min-height: 52px;
  border-radius: var(--radius-option);
  border: 1px solid var(--line);
  background: var(--panel);
}

.banner-text {
  flex: 1;
  margin: 0;
  font-size: var(--size-meta);
  color: var(--text);
}

.banner-dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
}

.banner-bad {
  border-color: color-mix(in srgb, var(--bad) 45%, transparent);
  background: color-mix(in srgb, var(--bad) 12%, var(--panel));
}

.banner-bad .banner-dot {
  background: var(--bad);
}

.banner-warn {
  border-color: color-mix(in srgb, var(--warn) 45%, transparent);
  background: color-mix(in srgb, var(--warn) 12%, var(--panel));
}

.banner-warn .banner-dot {
  background: var(--warn);
}

.banner-good {
  border-color: color-mix(in srgb, var(--good) 45%, transparent);
  background: color-mix(in srgb, var(--good) 12%, var(--panel));
}

.banner-good .banner-dot {
  background: var(--good);
}

/* ---------------------------------------------------------------- status & selection bars */

.statusbar {
  display: flex;
  align-items: center;
  gap: var(--space-gap);
  padding: var(--space-gap) var(--space-card) calc(var(--space-gap) + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: var(--sidebar);
}

.status-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.status-account {
  font-size: var(--size-meta);
  font-weight: 600;
  color: var(--dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status-sync {
  font-size: var(--size-label);
  color: var(--faint);
}

.selectbar {
  justify-content: space-between;
}

.selectbar .pill-primary {
  flex: 1;
  max-width: 260px;
}

/* ---------------------------------------------------------------- centred panels */

.centre {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-card);
  padding-bottom: calc(var(--space-card) + env(safe-area-inset-bottom));
}

.panel {
  background: var(--panel);
  border-radius: var(--radius-card);
  padding: var(--space-card);
}

.hero {
  width: 100%;
  max-width: 340px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-card);
  padding: calc(var(--space-card) * 2) var(--space-card) var(--space-card);
  text-align: center;
}

.hero-text {
  margin: 0;
  font-size: var(--size-option);
  color: var(--dim);
}

.hero .pill {
  width: 100%;
}

/* ---------------------------------------------------------------- setup sheet */

.sheet-layer {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.sheet-scrim {
  position: absolute;
  inset: 0;
  background: var(--scrim);
}

.sheet {
  position: relative;
  display: flex;
  flex-direction: column;
  max-height: calc(100dvh - env(safe-area-inset-top) - var(--space-card) * 2);
  background: var(--panel);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  border-top: 1px solid var(--line);
}

.sheet-enter .sheet {
  animation: sheet-up 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.sheet-enter .sheet-scrim {
  animation: sheet-fade 0.2s ease-out;
}

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

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

@media (prefers-reduced-motion: reduce) {
  .sheet-enter .sheet,
  .sheet-enter .sheet-scrim {
    animation: none;
  }
}

.sheet-grabber {
  flex-shrink: 0;
  width: 36px;
  height: 5px;
  margin: var(--space-tight) auto 0;
  border-radius: var(--radius-pill);
  background: var(--fill-strong);
}

.sheet-head {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  gap: var(--space-tight);
  padding: var(--space-tight) var(--space-tight) var(--space-gap) var(--space-card);
}

.sheet-heading {
  flex: 1;
  min-width: 0;
  padding-top: var(--space-tight);
}

.sheet-title {
  margin: 0;
  font-size: var(--size-title);
  font-weight: 800;
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
}

.sheet-subtitle {
  margin: 4px 0 0;
  font-size: var(--size-meta);
  color: var(--faint);
}

.sheet-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-card) + var(--space-tight));
  padding: var(--space-tight) var(--space-card) calc(var(--space-card) + var(--space-tight));
}

.sheet-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
}

.section-label {
  margin: 0;
  font-size: var(--size-label);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}

.section-locked > :not(.hint-locked):not(.section-label) {
  opacity: 0.45;
}

.hint {
  margin: 0;
  font-size: var(--size-meta);
  color: var(--faint);
}

.hint-locked {
  color: var(--dim);
}

/* segmented control */

.seg {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: var(--radius-pill);
  background: var(--fill);
}

.seg-option {
  flex: 1 1 0;
  min-width: 0;
  min-height: 44px;
  padding: 0 4px;
  border: 0;
  border-radius: var(--radius-pill);
  background: none;
  color: var(--dim);
  font-size: var(--size-body);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  touch-action: manipulation;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.seg-option:active:not(.seg-on) {
  background: var(--fill-strong);
}

.seg-on {
  background: var(--gradient-primary);
  color: var(--text);
  font-weight: 700;
}

.seg-option:focus-visible,
.chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* tag chips */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  min-height: 44px;
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--fill);
  color: var(--dim);
  font-size: var(--size-meta);
  touch-action: manipulation;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.chip-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chip-count {
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

.chip-on {
  border-color: transparent;
  background: var(--accent);
  color: var(--ground);
  font-weight: 700;
}

/* steppers */

.range {
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
}

.stepper {
  display: flex;
  align-items: center;
  gap: var(--space-tight);
}

.stepper .pill {
  width: 44px;
  padding: 0;
  font-size: 20px;
  line-height: 1;
}

.stepper-label {
  min-width: 44px;
  color: var(--dim);
}

.stepper-value {
  min-width: 34px;
  text-align: center;
  font-size: var(--size-option);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.stepper-unit {
  color: var(--dim);
}

/* footer */

.sheet-foot {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
  padding: var(--space-gap) var(--space-card) calc(var(--space-gap) + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: var(--sidebar);
}

.sheet-actions {
  display: flex;
  gap: var(--space-tight);
}

.sheet-actions .pill {
  flex: 1;
  min-width: 0;
}

.sheet-warn,
.sheet-error {
  margin: 0;
  font-size: var(--size-meta);
}

.sheet-warn {
  color: var(--warn);
}

.sheet-error {
  color: var(--bad);
}

/* ---------------------------------------------------------------- study screen */

.study {
  background: var(--app);
}

.study-head {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
  padding: 4px var(--space-tight) var(--space-gap);
}

.study-bar {
  display: flex;
  align-items: center;
  gap: var(--space-tight);
}

.study-title {
  flex: 1;
  min-width: 0;
  margin: 0;
  text-align: center;
  font-size: var(--size-body);
  font-weight: 700;
  color: var(--dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-button {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--fill);
  color: var(--text);
  touch-action: manipulation;
  transition: transform 0.12s ease, background-color 0.12s ease;
}

.icon-button:active:not(:disabled) {
  transform: scale(0.94);
  background: var(--fill-strong);
}

.icon-button:disabled {
  opacity: 0.4;
}

.icon-gap {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
}

.icon-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.icon-button .icon {
  width: 20px;
  height: 20px;
  stroke-width: 2.4;
}

.study-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  column-gap: var(--space-tight);
  row-gap: 2px;
  padding: 0 var(--space-tight);
  font-size: var(--size-meta);
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.study-count {
  color: var(--dim);
  font-weight: 600;
}

.study-repeating {
  color: var(--warn);
  font-weight: 600;
}

.study-spacer {
  flex: 1;
}

.study-clock {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.study-stopwatch {
  opacity: 0.75;
}

.study-qclock {
  color: var(--dim);
}

.clock-icon {
  width: 14px;
  height: 14px;
}

.track {
  position: relative;
  display: flex;
  height: 8px;
  margin: 0 var(--space-tight);
  border-radius: var(--radius-pill);
  background: var(--track);
  overflow: hidden;
}

.track-cleared {
  height: 100%;
  background: var(--gradient-progress);
  transition: width 0.3s ease;
}

.track-repeating {
  height: 100%;
  background: var(--warn);
  opacity: 0.85;
  transition: width 0.3s ease;
}

.study-scroll {
  padding-top: var(--space-tight);
  padding-bottom: calc(var(--space-card) * 2 + env(safe-area-inset-bottom));
}

.study-column {
  width: 100%;
  max-width: 664px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-gap);
}

.study-prompt {
  margin: 0;
  font-size: var(--size-question);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  overflow-wrap: anywhere;
}

/* picture */

.picture {
  margin: 0;
}

.picture-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  border-radius: var(--radius-option);
  touch-action: manipulation;
}

.picture-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 45vh;
  max-height: 45dvh;
  object-fit: contain;
  border-radius: var(--radius-option);
}

.picture-wait,
.picture-failed {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  border-radius: var(--radius-option);
  border: 1px dashed var(--line);
  background: var(--fill);
}

.picture-status {
  margin: 0;
  font-size: var(--size-meta);
  color: var(--faint);
}

.picture-failed .picture-status {
  color: var(--warn);
}

.picture-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Black, from the tokens: the ground under two layers of scrim. */
  background: linear-gradient(var(--scrim), var(--scrim)), linear-gradient(var(--scrim), var(--scrim)), var(--ground);
  touch-action: pinch-zoom;
}

.picture-full {
  display: block;
  max-width: 100vw;
  max-height: 100vh;
  max-height: 100dvh;
  object-fit: contain;
}

/* option rows */

.options {
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
}

.option {
  display: flex;
  align-items: center;
  gap: var(--space-gap);
  width: 100%;
  min-height: 56px;
  padding: 12px var(--space-card) 12px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-option);
  background: var(--fill);
  color: var(--text);
  text-align: left;
  font-size: var(--size-option);
  touch-action: manipulation;
  transition: transform 0.12s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.option:active:not(:disabled) {
  transform: scale(0.985);
  background: var(--fill-strong);
}

.option:disabled {
  opacity: 1;
  color: var(--text);
}

.option:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.option-letter {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--fill-strong);
  color: var(--dim);
  font-weight: 800;
  font-size: var(--size-body);
}

.option-text {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}

.option-mark {
  width: 22px;
  height: 22px;
  stroke-width: 2.6;
}

.option-correct {
  border-color: var(--good);
  background: color-mix(in srgb, var(--good) 16%, transparent);
}

.option-correct .option-letter {
  background: var(--good);
  color: var(--ground);
}

.option-correct .option-mark {
  color: var(--good);
}

.option-wrong {
  border-color: var(--bad);
  background: color-mix(in srgb, var(--bad) 16%, transparent);
}

.option-wrong .option-letter {
  background: var(--bad);
  color: var(--ground);
}

.option-wrong .option-mark {
  color: var(--bad);
}

/* tinted panels: feedback, answers, key terms */

.panel-tint {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-tight) var(--space-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: var(--fill);
}

.tint-good {
  color: var(--good);
  border-color: color-mix(in srgb, var(--good) 45%, transparent);
  background: color-mix(in srgb, var(--good) 12%, transparent);
}

.tint-bad {
  color: var(--bad);
  border-color: color-mix(in srgb, var(--bad) 40%, transparent);
  background: color-mix(in srgb, var(--bad) 12%, transparent);
}

.tint-warn {
  color: var(--warn);
  border-color: color-mix(in srgb, var(--warn) 40%, transparent);
  background: color-mix(in srgb, var(--warn) 12%, transparent);
}

.feedback-text {
  margin: 0;
  font-size: var(--size-body);
}

.answer-panel {
  gap: var(--space-tight);
  padding: var(--space-card);
}

.answer-label {
  margin: 0;
  font-size: var(--size-label);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}

.answer-label-good {
  color: var(--good);
}

.answer-text {
  margin: 0;
  font-size: var(--size-body);
  line-height: 1.5;
  color: var(--text);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.answer-none {
  margin: 0;
  font-size: var(--size-body);
  color: var(--faint);
}

.keyword-hit {
  padding: 1px 4px;
  margin: 0 -1px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--accent) 30%, transparent);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* explanation and note */

.notes {
  display: flex;
  flex-direction: column;
  gap: var(--space-tight);
}

.note-block {
  display: flex;
  align-items: flex-start;
  gap: var(--space-tight);
  padding: var(--space-tight) var(--space-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
}

.note-explain {
  color: var(--dim);
  background: color-mix(in srgb, var(--dim) 8%, transparent);
  border-color: color-mix(in srgb, var(--dim) 25%, transparent);
}

.note-note {
  color: var(--warn);
  background: color-mix(in srgb, var(--warn) 8%, transparent);
  border-color: color-mix(in srgb, var(--warn) 25%, transparent);
}

.note-icon {
  width: 18px;
  height: 18px;
  margin-top: 1px;
}

.note-text {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-size: var(--size-body);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* the open answer box */

.answer-box {
  display: block;
  width: 100%;
  min-height: calc(3 * 1.4em + 2 * 12px);
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-option);
  background: var(--fill);
  color: var(--text);
  font: inherit;
  /* 16px or more, or iOS zooms the page when the box is focused. */
  font-size: var(--size-option);
  line-height: 1.4;
  resize: none;
  overflow: hidden;
}

.answer-box::placeholder {
  color: var(--faint);
}

.answer-box:focus {
  outline: none;
  border-color: var(--accent);
}

/* action row */

.study-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-tight);
  padding-top: 4px;
}

.study-actions .pill {
  flex: 1 1 auto;
}

.study-actions .action-undo {
  flex: 0 0 auto;
  margin-right: auto;
  padding: 0 14px;
}

.study-actions-grade .pill {
  flex: 1 1 0;
  min-width: 0;
  padding: 0 10px;
}

/* pause sheet */

.pause-sheet {
  padding-bottom: calc(var(--space-card) + env(safe-area-inset-bottom));
}

.pause-head {
  padding: var(--space-gap) var(--space-card) var(--space-gap);
}

.pause-choices {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 var(--space-card);
}

.pause-choice {
  display: flex;
  align-items: center;
  gap: var(--space-gap);
  width: 100%;
  min-height: 56px;
  padding: 10px var(--space-gap);
  border: 0;
  border-radius: var(--radius-row);
  background: var(--fill);
  text-align: left;
  touch-action: manipulation;
  transition: background-color 0.12s ease, transform 0.12s ease;
}

.pause-choice:active {
  background: var(--fill-strong);
  transform: scale(0.99);
}

.pause-choice:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.pause-dot {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-pill);
}

.pause-good .pause-dot {
  background: var(--good);
}

.pause-cyan .pause-dot {
  background: var(--cyan);
}

.pause-dim .pause-dot {
  background: var(--dim);
}

.pause-words {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.pause-choice-title {
  font-size: var(--size-option);
  font-weight: 600;
  color: var(--text);
}

.pause-choice-detail {
  font-size: var(--size-meta);
  color: var(--faint);
}

/* finished */

.finished-title {
  margin: 0;
  font-size: var(--size-title);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.finished .hero-text {
  margin-top: calc(-1 * var(--space-gap));
}

.finished-line {
  margin: 0;
  font-size: var(--size-body);
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}