/* Synapse iPhone tokens — Apple HIG semantic colors, type, and metrics.
   Light system palette. Status hues stay distinct and pass 3:1 on white. */

:root {
  --color-tint: #007aff;
  --color-label: #000000;
  --color-secondary-label: rgba(60, 60, 67, 0.6);
  --color-tertiary-label: rgba(60, 60, 67, 0.3);
  --color-separator: rgba(60, 60, 67, 0.29);
  --color-background: #ffffff;
  --color-grouped-background: #f2f2f7;
  --color-grouped-secondary: #ffffff;
  --color-fill-tertiary: rgba(118, 118, 128, 0.12);
  --color-track: #e5e5ea;
  --color-gray: #8e8e93;
  --color-gray3: #c7c7cc;
  --color-white: #ffffff;
  --color-correct: #248a3d;
  --color-wrong: #d70015;
  --color-flagged: #d46a00;
  --color-material: rgba(249, 249, 249, 0.94);

  --font-display: "SF Pro Display", "SF Pro", -apple-system, BlinkMacSystemFont, Inter, sans-serif;
  --font-text: "SF Pro Text", "SF Pro", -apple-system, BlinkMacSystemFont, Inter, sans-serif;

  --size-large-title: 34px;
  --size-body: 17px;
  --size-subhead: 15px;
  --size-footnote: 13px;
  --size-caption: 12px;
  --size-tab: 10px;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --leading-large-title: 41px;
  --leading-body: 22px;
  --leading-subhead: 20px;
  --leading-footnote: 18px;
  --leading-caption: 16px;

  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;

  --margin-screen: 16px;
  --target-min: 44px;
  --radius-group: 10px;
  --radius-control: 9px;
  --radius-sheet: 12px;
  --radius-button: 12px;
  --bar-height: 6px;
  --phone-width: 390px;
  --phone-height: 844px;
  --status-height: 47px;
  --nav-height: 44px;
  --tab-height: 49px;
  --safe-bottom: 34px;
}

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

.phone {
  width: var(--phone-width);
  height: var(--phone-height);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  border-radius: 44px;
  background: var(--color-grouped-background);
  color: var(--color-label);
  font-family: var(--font-text);
  font-size: var(--size-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  letter-spacing: -0.41px;
  -webkit-font-smoothing: antialiased;
}

.phone > * {
  flex-shrink: 0;
}

.phone button {
  font-family: inherit;
  letter-spacing: inherit;
}

.status-bar {
  height: var(--status-height);
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 24px 6px;
  font-family: var(--font-display);
  font-size: var(--size-subhead);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-subhead);
  letter-spacing: -0.3px;
}

.status-icons {
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-icons svg {
  display: block;
  color: var(--color-label);
}

.large-title {
  margin: 0;
  padding: 0 var(--margin-screen) 2px;
  font-family: var(--font-display);
  font-size: var(--size-large-title);
  font-weight: var(--weight-bold);
  line-height: var(--leading-large-title);
  letter-spacing: 0.4px;
}

.screen-subtitle {
  margin: 0 var(--margin-screen) 2px;
  font-size: var(--size-subhead);
  line-height: var(--leading-subhead);
  letter-spacing: -0.24px;
  color: var(--color-secondary-label);
}

.nav-bar {
  min-height: var(--nav-height);
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 8px;
}

.nav-back,
.toolbar button,
.sheet-done,
.stepper button,
.segment button,
.button-primary,
.row-button {
  background: transparent;
  border: 0;
  color: var(--color-tint);
}

.nav-back {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  min-height: var(--target-min);
  min-width: var(--target-min);
  padding: 0 4px 0 0;
  font-size: var(--size-body);
  line-height: var(--leading-body);
}

.nav-title {
  margin: 0;
  font-family: var(--font-text);
  font-size: var(--size-body);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-body);
  letter-spacing: -0.41px;
}

.nav-timer {
  justify-self: end;
  margin: 0;
  padding-right: 8px;
  font-size: var(--size-subhead);
  line-height: var(--leading-subhead);
  font-weight: var(--weight-regular);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  color: var(--color-secondary-label);
}

.content {
  flex: 1 1 auto;
  min-height: 0;
  flex-shrink: 1;
}

.section-label {
  margin: 8px 0 4px;
  padding: 0 32px;
  font-size: var(--size-footnote);
  font-weight: var(--weight-regular);
  line-height: var(--leading-footnote);
  letter-spacing: -0.08px;
  color: var(--color-secondary-label);
}

.section-footer {
  margin: 6px 0 0;
  padding: 0 32px;
  font-size: var(--size-footnote);
  line-height: var(--leading-footnote);
  letter-spacing: -0.08px;
  color: var(--color-secondary-label);
}

.group {
  margin: 0 var(--margin-screen);
  background: var(--color-grouped-secondary);
  border-radius: var(--radius-group);
  overflow: hidden;
}

.group-follow {
  margin-top: var(--space-8);
}

.group-spaced {
  margin-top: var(--space-12);
}

.row {
  width: 100%;
  min-height: var(--target-min);
  display: flex;
  align-items: center;
  gap: var(--space-8);
  position: relative;
  padding: 10px var(--margin-screen);
  text-align: start;
  color: var(--color-label);
  font-size: var(--size-body);
  line-height: var(--leading-body);
}

.row:not(:last-child)::after {
  content: "";
  position: absolute;
  left: var(--margin-screen);
  right: 0;
  bottom: 0;
  height: 0.5px;
  background: var(--color-separator);
}

.row-label {
  flex: 1;
  min-width: 0;
}

.row-value {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  font-variant-numeric: tabular-nums;
  color: var(--color-label);
}

.row-stack {
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-8);
  padding-top: 12px;
  padding-bottom: 12px;
}

.row-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-12);
}

.row-note {
  margin: 0;
  font-size: var(--size-footnote);
  line-height: var(--leading-footnote);
  color: var(--color-secondary-label);
}

.row-button {
  justify-content: center;
}

.row-button-secondary {
  color: var(--color-secondary-label);
}

.row-disclosure .icon-chevron {
  margin-left: auto;
}

.icon {
  width: 22px;
  height: 22px;
  flex: none;
  display: block;
}

.icon-chevron {
  width: 13px;
  height: 13px;
  color: var(--color-gray3);
}

.icon-correct {
  color: var(--color-correct);
}

.icon-wrong {
  color: var(--color-wrong);
}

.icon-flagged {
  color: var(--color-flagged);
}

.icon-tint {
  color: var(--color-tint);
}

.icon-muted {
  color: var(--color-gray);
}

.status-name,
.legend span,
.row-value {
  display: inline-flex;
  align-items: center;
}

.status-name {
  gap: 6px;
}

.bar {
  display: block;
  height: var(--bar-height);
  border-radius: 3px;
  background: var(--color-track);
  position: relative;
}

.bar-inline {
  width: 84px;
  flex: none;
}

.bar-fill {
  display: block;
  height: 100%;
  width: var(--value);
  background: var(--color-tint);
  border-radius: inherit;
}

.bar-split {
  display: flex;
  height: 8px;
  overflow: hidden;
  background: var(--color-track);
}

.bar-split .bar-fill {
  width: auto;
  flex: 0 0 var(--value);
  border-radius: 0;
}

.bar-split .is-correct {
  background: var(--color-correct);
}

.bar-split .is-wrong {
  background: var(--color-wrong);
}

.bar-track {
  display: block;
  height: 8px;
  border-radius: 4px;
  background: var(--color-track);
  overflow: hidden;
}

.has-mark {
  height: auto;
  background: none;
  overflow: visible;
}

.bar-mark {
  position: absolute;
  top: -3px;
  bottom: -3px;
  left: var(--mark);
  width: 2px;
  margin-left: -1px;
  border-radius: 1px;
  background: var(--color-label);
}

.legend {
  display: flex;
  gap: var(--space-16);
  margin: 0;
  color: var(--color-label);
  font-size: var(--size-subhead);
  line-height: var(--leading-subhead);
}

.legend span {
  gap: 6px;
}

.legend .icon {
  width: 16px;
  height: 16px;
}

.activity-line {
  margin: 0;
}

.segment {
  display: flex;
  gap: 0;
  margin: 0 var(--margin-screen);
  padding: 2px;
  min-height: 48px;
  background: var(--color-fill-tertiary);
  border-radius: var(--radius-control);
}

.segment button {
  flex: 1;
  min-height: var(--target-min);
  border-radius: 7px;
  font-size: var(--size-subhead);
  font-weight: var(--weight-medium);
  line-height: var(--leading-subhead);
  color: var(--color-label);
}

.segment button.is-selected {
  background: var(--color-background);
  font-weight: var(--weight-semibold);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.stepper {
  display: inline-flex;
  align-items: center;
  flex: none;
  height: var(--target-min);
  background: var(--color-fill-tertiary);
  border-radius: var(--radius-control);
}

.row:has(.stepper) {
  padding-top: 0;
  padding-bottom: 0;
}

.stepper button {
  width: var(--target-min);
  height: var(--target-min);
  display: grid;
  place-items: center;
  padding: 0;
}

.stepper button .icon {
  width: 18px;
  height: 18px;
}

.stepper-value {
  min-width: 28px;
  padding: 0 8px;
  text-align: center;
  font-size: var(--size-subhead);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-subhead);
  font-variant-numeric: tabular-nums;
  border-inline: 0.5px solid var(--color-separator);
}

.button-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-8) var(--margin-screen) 0;
  min-height: 50px;
  border-radius: var(--radius-button);
  background: var(--color-tint);
  color: var(--color-white);
  font-size: var(--size-body);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-body);
}

.stem {
  margin: 0;
  padding: 16px var(--margin-screen) 4px;
  font-size: var(--size-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
}

.choice-list {
  margin-top: var(--space-12);
}

.choice .row-label {
  font-weight: var(--weight-regular);
}

.toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: calc(var(--target-min) + var(--safe-bottom));
  padding: 0 8px var(--safe-bottom);
  border-top: 0.5px solid var(--color-separator);
  background: var(--color-grouped-background);
}

.toolbar button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: var(--target-min);
  min-width: var(--target-min);
  padding: 0 12px;
  font-size: var(--size-body);
  line-height: var(--leading-body);
}

.tool-flag {
  color: var(--color-label);
}

.tool-next {
  font-weight: var(--weight-semibold);
}

.toolbar-end {
  display: flex;
  align-items: center;
}

.sheet + .tab-bar {
  margin-top: 0;
}

.tab-bar {
  flex-shrink: 0;
  margin-top: auto;
  height: calc(var(--tab-height) + var(--safe-bottom));
  padding: 4px 0 var(--safe-bottom);
  display: flex;
  background: var(--color-material);
  border-top: 0.5px solid var(--color-separator);
  backdrop-filter: saturate(180%) blur(20px);
}

.tab {
  flex: 1;
  min-height: var(--target-min);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-gray);
  font-family: var(--font-text);
  font-size: var(--size-tab);
  font-weight: var(--weight-medium);
  line-height: 12px;
  letter-spacing: 0.1px;
}

.tab.is-selected {
  color: var(--color-tint);
}

.tab-icon {
  width: 25px;
  height: 25px;
  display: block;
}

.sheet {
  flex-shrink: 0;
  margin-top: auto;
  background: var(--color-background);
  border-radius: var(--radius-sheet) var(--radius-sheet) 0 0;
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.06);
  padding: 6px var(--margin-screen) 4px;
}

.sheet-grabber {
  width: 36px;
  height: 5px;
  margin: 2px auto 8px;
  border-radius: 3px;
  background: var(--color-gray3);
}

.sheet-title {
  margin: 0 0 6px;
  text-align: center;
  font-family: var(--font-text);
  font-size: var(--size-body);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-body);
}

.sheet-body {
  margin: 0;
  font-size: var(--size-body);
  line-height: var(--leading-body);
}

.sheet-done {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% + 32px);
  margin: 8px -16px 0;
  min-height: var(--target-min);
  border-top: 0.5px solid var(--color-separator);
  font-size: var(--size-body);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-body);
}

.home-indicator {
  position: absolute;
  left: 50%;
  bottom: 8px;
  width: 134px;
  height: 5px;
  transform: translateX(-50%);
  border-radius: 3px;
  background: var(--color-label);
  z-index: 3;
  pointer-events: none;
}

button:focus-visible {
  outline: 2px solid var(--color-tint);
  outline-offset: 2px;
}