/* Study shortcuts — same kit tokens as the rest of the shell. */

html,
body,
#view-root,
#view-study,
#flashcard {
  overscroll-behavior-x: none;
}

.ux-bar {
  display: flex;
}

.ux-toggle,
.ux-continue {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--dx-border, var(--ink-line));
  border-radius: var(--dx-radius, 16px);
  background: var(--dx-card, var(--ink-elevated));
  box-shadow: var(--dx-shadow, none);
  color: var(--dx-text, var(--paper));
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.ux-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 14px;
  text-align: left;
}

.ux-toggle-state {
  flex: 0 0 auto;
  min-width: 44px;
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--dx-accent-soft, var(--accent-soft));
  color: var(--dx-accent, var(--accent));
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ux-toggle[aria-pressed="false"] .ux-toggle-state {
  background: transparent;
  color: var(--dx-muted, var(--paper-muted));
  box-shadow: inset 0 0 0 1px var(--dx-border, var(--ink-line));
}

.ux-continue {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  text-align: left;
}

.ux-continue[hidden] {
  display: none !important;
}

.ux-continue small {
  display: block;
  margin-bottom: 2px;
  color: var(--dx-muted, var(--paper-muted));
  font-size: 0.72rem;
  font-weight: 650;
}

.ux-continue strong {
  display: block;
  font-size: 1rem;
  font-weight: 650;
}

.ux-continue-go {
  flex: 0 0 auto;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--dx-accent, var(--accent));
  font-size: 1.25rem;
}

.ux-toggle:focus-visible,
.ux-continue:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring, 0 0 0 3px var(--dx-accent-soft));
}

.ux-keys {
  margin: 0;
  text-align: center;
  color: var(--dx-muted, var(--paper-muted));
  font-size: 0.75rem;
  line-height: 1.4;
}

#view-study,
#flashcard {
  touch-action: pan-y;
  overscroll-behavior: contain;
}

#flashcard .flashcard-origins,
#flashcard .flashcard-char-panel {
  touch-action: pan-y;
}

#flashcard.ux-dragging {
  transition: none;
  z-index: 2;
}

#flashcard.ux-left {
  border-color: var(--danger);
}

#flashcard.ux-right {
  border-color: var(--teal);
}

#flashcard.ux-up {
  border-color: var(--dx-accent, var(--accent));
}

.ux-swipe-label {
  position: absolute;
  top: 12px;
  left: 50%;
  z-index: 3;
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--dx-border, var(--ink-line));
  border-radius: 999px;
  background: var(--dx-card-solid, #fff);
  color: var(--dx-text, var(--paper));
  font-size: 0.8125rem;
  font-weight: 700;
  pointer-events: none;
  transform: translateX(-50%);
}

.ux-swipe-label.is-on {
  display: flex;
}

.ux-swipe-label.is-again {
  color: var(--danger);
  border-color: var(--danger);
}

.ux-swipe-label.is-good {
  color: var(--teal);
  border-color: var(--teal);
}

.ux-swipe-label.is-move,
.ux-swipe-label.is-reveal {
  color: var(--dx-accent, var(--accent));
  border-color: var(--dx-accent, var(--accent));
}

@media (prefers-reduced-motion: reduce) {
  #flashcard.ux-dragging {
    transform: none !important;
  }

  .ux-swipe-label,
  .ux-toggle,
  .ux-continue {
    transition: none !important;
  }
}

/* Practice focus: progress, card, and grade buttons fill the screen. */
.practice-focus-exit {
  display: none;
}

html.practice-focus,
html.practice-focus body {
  background-color: var(--dx-bg, var(--bg-hex, #f6f4ef));
  overflow: hidden;
  overflow-anchor: none;
}

html.dark.practice-focus,
html.dark.practice-focus body {
  background-color: var(--dx-bg, #141414);
}

html.practice-focus body {
  padding-bottom: 0;
}

html.practice-focus .app {
  height: 100dvh;
  max-height: 100dvh;
}

html.practice-focus .app,
html.practice-focus .app-body,
html.practice-focus .app-shell,
html.practice-focus .main,
html.practice-focus .view-study,
html.practice-focus .study-session {
  transform: none !important;
  animation: none !important;
  filter: none;
}

html.practice-focus .app-shell {
  padding-bottom: 0;
}

html.practice-focus .dx-header,
html.practice-focus .tab-bar,
html.practice-focus #connect,
html.practice-focus #ux-bar,
html.practice-focus #study-filters,
html.practice-focus .ux-keys {
  display: none !important;
}

html.practice-focus .main {
  padding: 0;
}

html.practice-focus .view-study {
  gap: 8px;
  overflow-anchor: none;
  padding:
    env(safe-area-inset-top, 0px)
    max(12px, env(safe-area-inset-right, 0px))
    0
    max(12px, env(safe-area-inset-left, 0px));
  overflow: hidden;
}

html.practice-focus .study-session {
  flex: 1 1 auto;
  gap: 8px;
  width: 100%;
  max-width: 720px;
  min-height: 0;
  margin-inline: auto;
  padding-bottom: calc(84px + env(safe-area-inset-bottom, 0px));
  overflow: hidden;
}

html.practice-focus .study-progress-wrap {
  flex: 0 0 auto;
  margin-inline: -12px;
  padding: 0 12px 6px;
  border: 0;
  border-radius: 0;
  background: var(--dx-bg, #f6f4ef);
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

html.dark.practice-focus .study-progress-wrap {
  background: var(--dx-bg, #141414);
}

html.practice-focus .practice-session-row {
  min-height: 44px;
  padding-right: 48px;
}

html.practice-focus .flashcard {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  justify-content: flex-start;
}

html.practice-focus .flashcard-front,
html.practice-focus .flashcard-back {
  min-height: 0;
  justify-content: center;
}

html.practice-focus .flashcard:not(.is-flipped) .flashcard-front {
  min-height: 100%;
}

html.practice-focus .practice-focus-exit {
  position: fixed;
  z-index: 60;
  top: env(safe-area-inset-top, 0px);
  right: env(safe-area-inset-right, 0px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--dx-border, #e2e0d9);
  border-radius: 999px;
  background: var(--dx-card-solid, #fff);
  color: var(--dx-text, #0d0b08);
  box-shadow: none;
  cursor: pointer;
  touch-action: manipulation;
}

html.dark.practice-focus .practice-focus-exit {
  border-color: var(--dx-border, #2b2b2b);
  background: var(--dx-card-solid, #1f1f1f);
  color: var(--dx-text, #efeeec);
}

html.practice-focus .practice-focus-exit:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring, 0 0 0 3px var(--dx-accent-soft));
}

html.practice-focus .practice-focus-exit:active {
  transform: scale(0.96);
}

html.practice-focus .study-actions {
  position: fixed;
  z-index: 40;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding:
    8px
    max(12px, env(safe-area-inset-right, 0px))
    calc(8px + env(safe-area-inset-bottom, 0px))
    max(12px, env(safe-area-inset-left, 0px));
  background: var(--dx-bg, #f6f4ef);
  border-top: 1px solid var(--dx-border, var(--ink-line));
}

html.dark.practice-focus .study-actions {
  background: var(--dx-bg, #141414);
}

html.practice-focus #btn-reveal:not([hidden]) {
  position: fixed;
  z-index: 40;
  left: 0;
  right: 0;
  bottom: calc(8px + env(safe-area-inset-bottom, 0px));
  display: block;
  width: min(720px, calc(100% - max(12px, env(safe-area-inset-left, 0px)) - max(12px, env(safe-area-inset-right, 0px))));
  margin-inline: auto;
}

@media (max-width: 400px) {
  html.practice-focus .flashcard {
    padding: 16px 12px;
  }

  html.practice-focus .btn-rate {
    min-height: 52px;
    padding: 6px 2px;
  }
}