/* Vocabelle — application styles.
   Every value here comes from the design system in ./design-system/.
   Raw hex, ad-hoc pixel sizes and one-off radii do not belong in this file:
   if a value is missing, add a token, don't hand-tune it here.
   Reference: design-system/DESIGN-SYSTEM.md */

@import url("./design-system/styles.css");

/* ---------------------------------------------------------------- layout */

html,
body {
  min-height: 100%;
}

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--surface-page);
}

.app-main {
  flex: 1;
  width: 100%;
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: var(--space-10) var(--layout-gutter-lg);
}

.screen {
  display: none;
  flex-direction: column;
  gap: var(--space-6);
}

.screen.is-active {
  display: flex;
}

/* A button placed straight into a screen sizes to its label, not to the column. */
.screen > .btn {
  align-self: flex-start;
}

.stack-5 {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.reading {
  max-width: var(--layout-reading);
}

.centred-column {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
}

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

[hidden] {
  display: none !important;
}

/* ------------------------------------------------------------ typography */

.eyebrow {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-heavy);
  letter-spacing: var(--letter-spacing-eyebrow);
  text-transform: uppercase;
  color: var(--text-secondary);
}

.eyebrow--muted {
  color: var(--text-muted);
}

.eyebrow--section {
  display: block;
  margin-bottom: var(--space-4);
}

.page-title {
  margin-top: var(--space-1);
  font-size: var(--font-size-3xl);
}

.page-title--hero {
  font-size: var(--font-size-4xl);
}

.page-lede {
  margin-top: var(--space-4);
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

.wordmark {
  font-family: var(--font-wordmark);
  font-weight: var(--font-weight-wordmark);
  font-size: var(--font-size-xl);
  letter-spacing: 0.01em;
  color: var(--teal-700);
}

/* The wordmark doubles as the way home. It stays a wordmark, not a button:
   no fill, no border, no padding that would make it read as a control. */
.wordmark--home {
  border: 0;
  padding: 0;
  background: none;
  cursor: pointer;
}

.wordmark--home:hover {
  color: var(--text-link-hover);
}

/* ----------------------------------------------------------------- icons */

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: var(--icon-size, 20px);
  height: var(--icon-size, 20px);
}

.icon svg {
  width: var(--icon-size, 20px);
  height: var(--icon-size, 20px);
  stroke-width: 2;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch-target);
  padding: 0 var(--space-5);
  font-family: var(--font-core);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    background var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    transform var(--duration-instant) var(--ease-out);
}

.btn--sm {
  min-height: var(--touch-target-sm);
  padding: 0 var(--space-4);
  font-size: var(--font-size-sm);
  gap: var(--space-2);
}

.btn--lg {
  min-height: 56px;
  padding: 0 var(--space-8);
  font-size: var(--font-size-lg);
  gap: 10px;
}

.btn--pill {
  border-radius: var(--radius-pill);
}

.btn--block {
  display: flex;
  width: 100%;
}

.btn--primary {
  background: var(--action-primary);
  color: var(--action-primary-text);
  box-shadow: var(--shadow-md);
}

.btn--primary:hover:not(:disabled) {
  background: var(--action-primary-hover);
}

.btn--secondary {
  background: var(--action-secondary);
  color: var(--action-secondary-text);
  box-shadow: var(--shadow-sm);
}

.btn--secondary:hover:not(:disabled) {
  background: var(--action-secondary-hover);
}

.btn--quiet {
  background: transparent;
  color: var(--text-accent);
}

.btn--quiet:hover:not(:disabled) {
  background: var(--action-quiet-hover);
}

.btn--danger {
  background: transparent;
  color: var(--action-danger);
}

.btn--danger:hover:not(:disabled) {
  background: var(--action-danger-soft);
  color: var(--action-danger-hover);
}

/* Press: 1px down, shadow drops, fill one step darker. Never opacity, never scale. */
.btn:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: var(--shadow-press);
}

.btn--primary:active:not(:disabled) {
  background: var(--action-primary-active);
}

.btn--quiet:active:not(:disabled),
.btn--danger:active:not(:disabled) {
  box-shadow: none;
}

.btn:disabled {
  background: var(--action-disabled);
  color: var(--action-disabled-text);
  box-shadow: none;
  cursor: not-allowed;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-target-sm);
  height: var(--touch-target-sm);
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out);
}

.icon-btn:hover {
  background: var(--action-quiet-hover);
}

.icon-btn--danger {
  color: var(--action-danger);
}

.icon-btn--danger:hover {
  background: var(--action-danger-soft);
}

/* ----------------------------------------------------------------- cards */

.card {
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--surface-card);
  border: var(--border-width) solid var(--border-default);
  box-shadow: var(--shadow-sm);
}

.card--study {
  background: var(--surface-study);
  border-color: var(--border-subtle);
}

.card--sunken {
  background: var(--surface-sunken);
  border-color: var(--border-subtle);
}

.card--pad-sm {
  padding: var(--space-4);
}

.card--pad-lg {
  padding: var(--space-8);
}

.card--pad-none {
  padding: 0;
  overflow: hidden;
}

.card--elev-md {
  box-shadow: var(--shadow-md);
}

.card--elev-lg {
  box-shadow: var(--shadow-lg);
}

/* ------------------------------------------------------------------ tags */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-1) 10px;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  line-height: 1.4;
  white-space: nowrap;
}

.tag--learn {
  background: var(--status-learn-bg);
  color: var(--status-learn-text);
}

.tag--known {
  background: var(--status-known-bg);
  color: var(--status-known-text);
}

/* -------------------------------------------------------------- progress */

.progress__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.progress__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-secondary);
}

.progress__value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.progress__track {
  height: var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--progress-track);
  overflow: hidden;
}

.progress--lg .progress__track {
  height: var(--space-4);
}

.progress__fill {
  width: 0;
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--progress-fill);
  transition: width var(--duration-slow) var(--ease-out);
}

/* ------------------------------------------------------------ stat tiles */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.stat-tile {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--surface-study);
  border: var(--border-width) solid var(--border-subtle);
}

.stat-tile__top {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-strong);
}

.stat-tile--learn .stat-tile__top {
  color: var(--status-learn-text);
}

.stat-tile--known .stat-tile__top {
  color: var(--status-known-text);
}

.stat-tile__value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-heavy);
  line-height: 1;
}

.stat-tile__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-secondary);
}

.stat-tile__hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* ----------------------------------------------------------- empty state */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  padding: var(--space-10) var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--surface-study);
  border: var(--border-width) dashed var(--border-strong);
}

.empty-state__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-circle);
  background: var(--surface-card);
  box-shadow: var(--shadow-sm);
  color: var(--text-accent);
}

.empty-state__title {
  font-size: var(--font-size-xl);
}

.empty-state__body {
  max-width: 380px;
  color: var(--text-secondary);
}

.empty-state__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-1);
}

/* ----------------------------------------------------------------- toast */

.toast-layer {
  position: fixed;
  left: 50%;
  bottom: var(--space-6);
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  justify-content: center;
  padding: 0 var(--layout-gutter);
  pointer-events: none;
}

.toast {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  border-radius: var(--radius-pill);
  background: var(--surface-inverse);
  color: var(--text-on-dark);
  box-shadow: var(--shadow-xl);
  pointer-events: auto;
}

.toast__icon {
  color: var(--teal-200);
}

.toast__message {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.toast__dismiss {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--space-8);
  height: var(--space-8);
  border: none;
  border-radius: var(--radius-circle);
  background: transparent;
  color: var(--teal-200);
  cursor: pointer;
}

/* ----------------------------------------------------------------- forms */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-secondary);
}

.field__hint {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.field__error {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--feedback-wrong);
}

.input,
.textarea,
.select__control {
  width: 100%;
  font-family: var(--font-core);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--surface-field);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hairline);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.input,
.select__control {
  min-height: var(--touch-target);
  padding: 0 14px;
}

.input--lg {
  min-height: 56px;
  font-size: var(--font-size-lg);
}

.textarea {
  padding: var(--space-3) 14px;
  line-height: var(--line-height-normal);
  resize: vertical;
}

.input[aria-invalid="true"],
.textarea[aria-invalid="true"] {
  border-color: var(--action-danger);
}

.select {
  position: relative;
}

.select__control {
  appearance: none;
  padding-right: 44px;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
}

.select__chevron {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  display: flex;
  color: var(--text-secondary);
}

.segmented {
  display: inline-flex;
  align-self: flex-start;
  gap: var(--space-1);
  padding: var(--space-1);
  border-radius: var(--radius-md);
  background: var(--surface-sunken);
  border: var(--border-width) solid var(--border-subtle);
}

.segmented--block {
  display: flex;
  align-self: stretch;
}

.segmented__option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch-target-sm);
  padding: 0 var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.segmented--block .segmented__option {
  flex: 1;
}

.segmented__option[aria-pressed="true"] {
  background: var(--action-primary);
  color: var(--action-primary-text);
  box-shadow: var(--shadow-sm);
}

/* ------------------------------------------------------------ navigation */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-3) var(--layout-gutter);
  background: var(--surface-card);
  border-bottom: var(--border-width) solid var(--border-default);
}

.app-header__nav {
  display: flex;
  gap: var(--space-1);
}

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--touch-target-sm);
  padding: 0 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out);
}

.nav-item:hover {
  background: var(--action-quiet-hover);
}

.nav-item[aria-current="page"] {
  background: var(--action-secondary);
  color: var(--action-secondary-text);
}

.nav-badge {
  min-width: 20px;
  padding: 1px 6px;
  border-radius: var(--radius-pill);
  background: var(--status-learn-accent);
  color: var(--ink-900);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-heavy);
  text-align: center;
}

.mobile-bar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--layout-gutter);
  background: var(--surface-card);
  border-bottom: var(--border-width) solid var(--border-default);
}

.mobile-bar .wordmark {
  font-size: var(--font-size-lg);
}

.bottom-nav-holder {
  display: none;
  position: sticky;
  bottom: 0;
  z-index: 10;
}

.bottom-nav {
  display: flex;
  justify-content: space-around;
  align-items: stretch;
  gap: 2px;
  padding: 6px 6px calc(6px + env(safe-area-inset-bottom));
  background: var(--surface-card);
  border-top: var(--border-width) solid var(--border-default);
  box-shadow: 0 -6px 20px rgb(var(--shadow-rgb) / 0.06);
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: 56px;
  padding: var(--space-1) 2px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
}

.bottom-nav__item[aria-current="page"] {
  color: var(--text-accent);
}

.bottom-nav__icon {
  position: relative;
  display: inline-flex;
}

.bottom-nav__badge {
  position: absolute;
  top: -3px;
  right: -8px;
  min-width: 16px;
  height: 16px;
  padding: 0 var(--space-1);
  border-radius: var(--radius-pill);
  background: var(--status-learn-accent);
  color: var(--ink-900);
  font-size: 11px;
  font-weight: var(--font-weight-heavy);
  line-height: 16px;
  text-align: center;
}

.bottom-nav__label {
  font-size: 11px;
  font-weight: var(--font-weight-bold);
}

/* -------------------------------------------------------------- learning */

.flashcard {
  perspective: 1400px;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}

.flashcard__inner {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  max-height: 58vh;
  cursor: pointer;
  transform-style: preserve-3d;
  border-radius: var(--radius-2xl);
  transition: transform var(--duration-flip) var(--ease-card);
}

.flashcard.is-flipped .flashcard__inner {
  transform: rotateY(180deg);
}

.flashcard__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-6);
  border-radius: var(--radius-2xl);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: var(--surface-study);
  border: var(--border-width) solid var(--border-default);
  box-shadow: var(--shadow-lg);
}

.flashcard__face--back {
  background: var(--surface-sunken);
  transform: rotateY(180deg);
}

.flashcard__term,
.quiz__prompt {
  font-size: var(--font-size-word);
  font-weight: var(--font-weight-heavy);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  text-align: center;
  color: var(--text-strong);
}

.flashcard__hint {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.flashcard__note {
  max-width: 320px;
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.flashcard__count {
  margin-top: var(--space-3);
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-secondary);
}

.word-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--surface-card);
  border-bottom: var(--border-width) solid var(--border-subtle);
  transition: background var(--duration-fast) var(--ease-out);
}

.word-row:last-child {
  border-bottom: none;
}

.word-row:hover {
  background: var(--surface-study);
}

.word-row__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.word-row__line {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.word-row__word {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-heavy);
  color: var(--text-strong);
}

.word-row__translation {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

.word-row__note {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.word-row__actions {
  display: flex;
  gap: 2px;
  opacity: 0.55;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.word-row:hover .word-row__actions,
.word-row:focus-within .word-row__actions {
  opacity: 1;
}

.answer-feedback {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
}

.answer-feedback--correct {
  background: var(--feedback-correct-bg);
  color: var(--feedback-correct);
}

.answer-feedback--wrong {
  background: var(--feedback-wrong-bg);
  color: var(--feedback-wrong);
}

.answer-feedback__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.answer-feedback__headline {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-heavy);
}

.answer-feedback__note {
  font-size: var(--font-size-sm);
}

.session-summary {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-5);
  padding: var(--space-8) var(--space-6);
  border-radius: var(--radius-lg);
  background: var(--surface-study);
  border: var(--border-width) solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  color: var(--text-accent);
}

.session-summary__title {
  font-size: var(--font-size-2xl);
}

.session-summary__score {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-heavy);
  line-height: 1;
  color: var(--text-strong);
}

.session-summary__progress {
  width: 100%;
  max-width: 320px;
}

.session-summary__missed {
  width: 100%;
  max-width: 380px;
  text-align: left;
}

.session-summary__missed-label {
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-secondary);
}

.session-summary__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  padding: 6px var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--status-learn-bg);
  color: var(--status-learn-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.session-summary__actions,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* --------------------------------------------------------------- screens */

.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.how-it-works {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.how-it-works li {
  display: flex;
  gap: var(--space-3);
}

.how-it-works__number {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-circle);
  background: var(--surface-sunken);
  color: var(--text-accent);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-heavy);
}

.how-it-works__title {
  display: block;
  color: var(--text-strong);
}

.how-it-works__body {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Carries the reading order from one step to the next. Decorative: the ordered
   list already states the sequence for a screen reader. */
.how-it-works__arrow {
  flex: 0 0 auto;
  align-self: center;
  margin-left: auto;
  color: var(--text-muted);
}

/* Below 760px the three steps stack, so an arrow pointing right would point at
   nothing. The row is pinned to three columns above that width, which keeps the
   two directions the only two cases. */
@media (max-width: 759px) {
  .how-it-works {
    grid-template-columns: 1fr;
  }

  .how-it-works__arrow {
    transform: rotate(90deg);
  }
}

/* The revise prompt is the one place the yellow becomes a border. It is a fill
   and an edge, never a text colour. */
.revise-prompt {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  border-color: var(--yellow-300);
}

.revise-prompt__body {
  flex: 1;
  min-width: 180px;
}

.revise-prompt__title {
  display: block;
  font-size: var(--font-size-lg);
  color: var(--text-strong);
}

.revise-prompt__hint {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.backup-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--surface-study);
  border: var(--border-width) solid var(--border-subtle);
}

.backup-row__note {
  max-width: var(--layout-reading);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.add-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.add-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.add-panel__title {
  font-size: var(--font-size-xl);
}

/* ------------------------------------------------------------------ scan */

.scan-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-8) var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--surface-card);
  border: var(--border-width) dashed var(--border-strong);
}

.scan-drop__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-circle);
  background: var(--surface-study);
  color: var(--text-accent);
}

.scan-drop__body {
  max-width: 380px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.scan-drop__actions {
  justify-content: center;
  margin-top: var(--space-1);
}

/* A capture input opens the camera on a phone and a file picker on a laptop,
   where "Take a photo" would be a lie. Shown only to a touch device. */
@media (hover: hover) and (pointer: fine) {
  .scan-drop__camera {
    display: none;
  }
}

.scan-status {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  background: var(--surface-study);
  color: var(--text-secondary);
}

.scan-status--error {
  background: var(--feedback-wrong-bg);
  color: var(--feedback-wrong);
}

.add-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.add-grid__wide {
  grid-column: 1 / -1;
}

.add-grid__wide.btn {
  justify-self: start;
}

.setup-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  max-width: 520px;
}

.setup-card__lede {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

.setup-card .btn {
  align-self: start;
}

.quiz-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.practise-deck {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.practise-deck__actions {
  display: flex;
  gap: var(--space-3);
}

.practise-deck__end {
  align-self: center;
}

/* ----------------------------------------------------------------- phone */

@media (max-width: 759px) {
  .app-header {
    display: none;
  }

  .mobile-bar {
    display: flex;
  }

  .bottom-nav-holder {
    display: block;
  }

  .app-main {
    padding: var(--space-6) var(--layout-gutter) 96px;
  }

  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }

  .add-grid {
    grid-template-columns: 1fr;
  }

  /* Segmented controls go full width on a phone, per the design system's
     `fullWidth={phone}`. */
  .segmented {
    display: flex;
    align-self: stretch;
  }

  .segmented__option {
    flex: 1;
  }

  .add-grid__wide {
    grid-column: auto;
  }

  .add-grid__wide.btn,
  .setup-card .btn {
    display: flex;
    width: 100%;
    justify-self: stretch;
    align-self: stretch;
  }

  .action-row .btn,
  .session-summary__actions .btn,
  .page-head > .btn,
  .revise-prompt .btn,
  .screen > .btn {
    display: flex;
    width: 100%;
  }

  /* A phone has no room for word, translation, tag and two controls on one
     line. The word keeps the full width; the tag and the controls drop below. */
  .word-row {
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2) var(--space-3);
  }

  .word-row__body {
    flex: 1 1 100%;
  }

  .word-row__actions {
    margin-left: auto;
    opacity: 1;
  }

  .toast-layer {
    bottom: calc(96px + var(--space-3));
  }
}