/*
 * Korean Word Quiz (web) - styles.
 * Colors follow lib/theme/app_palette.dart (1.6.0): light "modern hanji"
 * (paper, navy ink, vermilion) and dark "focus" (near-black, mint).
 * Web-only tweaks for WCAG AA: light --text-muted is darker (#6E685D instead
 * of #8A8478) and filled vermilion buttons use #CC4127 (text contrast 4.6:1).
 */

:root,
:root[data-theme='light'] {
  color-scheme: light;
  --bg: #f6f2ea;
  --surface: #fffdf8;
  --surface-alt: #efe9dd;
  --border: #e4dccb;
  --border-strong: #cfc4ae;
  --text: #1e2a3b;
  --text-2: #55534c;
  --text-muted: #6e685d;
  --hero: #1e2a3b;
  --on-hero: #f6f2ea;
  --on-hero-muted: #c9c2b3;
  --hero-track: #3a4658;
  --accent: #d9472b;
  --accent-button: #cc4127;
  --on-accent: #fff8f3;
  --accent-soft: #fbe7e0;
  --on-accent-soft: #a8361f;
  --primary-button: #1e2a3b;
  --on-primary-button: #f6f2ea;
  --correct: #2f7d6b;
  --correct-bg: #e3efea;
  --correct-text: #1f5a4c;
  --wrong: #b3261e;
  --wrong-bg: #f9e3df;
  --wrong-text: #8c1d16;
  --streak: #d9472b;
  --track: #e8e0cf;
  --link: #a8361f;
  --focus: #1e2a3b;
  --scrim: rgba(30, 42, 59, 0.42);
  --shadow: 0 8px 28px rgba(30, 42, 59, 0.12);
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #111317;
  --surface: #1b1e24;
  --surface-alt: #262a31;
  --border: #262a31;
  --border-strong: #3a3f48;
  --text: #f2f4f7;
  --text-2: #c3c8d1;
  --text-muted: #8e95a2;
  --hero: #1f232a;
  --on-hero: #f2f4f7;
  --on-hero-muted: #9aa1ad;
  --hero-track: #2e333b;
  --accent: #5ee6b0;
  --accent-button: #5ee6b0;
  --on-accent: #0b2a1f;
  --accent-soft: #173a30;
  --on-accent-soft: #9ff5d2;
  --primary-button: #5ee6b0;
  --on-primary-button: #0b2a1f;
  --correct: #5ee6b0;
  --correct-bg: #143a2e;
  --correct-text: #9ff5d2;
  --wrong: #ff6b6b;
  --wrong-bg: #3a1c1f;
  --wrong-text: #ffb4b4;
  --streak: #ff9f43;
  --track: #2b2f37;
  --link: #5ee6b0;
  --focus: #5ee6b0;
  --scrim: rgba(0, 0, 0, 0.6);
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  /* Reserve the scrollbar's space so content doesn't shift sideways when feedback makes the page scroll */
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

img,
svg {
  display: block;
}

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

button {
  cursor: pointer;
}

a {
  color: var(--link);
}

h1,
h2,
h3,
p {
  margin: 0;
}

.serif,
.ko-serif {
  font-family: 'Noto Serif KR', 'Noto Serif', 'Nanum Myeongjo', 'AppleMyungjo', Georgia, serif;
  font-weight: 700;
}

.icon {
  width: 24px;
  height: 24px;
  flex: none;
  fill: currentColor;
}

.icon-sm {
  width: 18px;
  height: 18px;
}

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

:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.hero :focus-visible {
  outline-color: var(--on-hero);
}

#app:focus-visible,
[tabindex='-1']:focus-visible {
  outline: none;
}

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

#app {
  min-height: 100vh;
  min-height: 100dvh;
}

.page {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 8px 20px 32px;
  padding-left: max(20px, env(safe-area-inset-left));
  padding-right: max(20px, env(safe-area-inset-right));
}

.page-wide {
  max-width: 1080px;
}

.stack > * + * {
  margin-top: 12px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  align-items: center;
  min-height: 56px;
  margin: 0 -8px 4px;
  background: var(--bg);
}

.topbar h1 {
  font-size: 18px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text);
}

.icon-btn:hover {
  background: var(--surface-alt);
}

.icon-btn.muted {
  color: var(--text-2);
}

/* -------------------------------------------------------------- home header */

.home-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0 14px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

.home-header .titles {
  flex: 1;
  min-width: 0;
}

.home-header h1 {
  font-size: 18px;
  line-height: 1.25;
}

.home-header .tagline {
  color: var(--text-muted);
  font-size: 12px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-link {
  display: none;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--text-2);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.header-link:hover {
  background: var(--surface-alt);
  color: var(--text);
}

/* --------------------------------------------------------------- home grid */

.home-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.home-col {
  display: contents;
}

.home-grid .o-notice { order: 0; }
.home-grid .o-hero { order: 1; }
.home-grid .o-bonus { order: 2; }
.home-grid .o-stats { order: 3; }
.home-grid .o-weekly { order: 4; }
.home-grid .o-expert { order: 5; }
.home-grid .o-saved { order: 6; }
.home-grid .o-app { order: 7; }

@media (min-width: 900px) {
  .page-wide {
    padding-top: 16px;
  }

  .header-link {
    display: inline-block;
  }

  .home-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .home-col {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .home-grid .o-notice {
    grid-column: 1 / -1;
  }

  .hero {
    padding: 24px 26px 26px;
  }

  .hero .hero-title {
    font-size: 30px;
  }
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.card.flush {
  padding: 4px 0;
}

.card-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.card-title h2 {
  flex: 1;
  font-size: 19px;
  line-height: 1.3;
}

.card-title .count {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
}

.card .sub {
  color: var(--text-muted);
  font-size: 13px;
}

.divider {
  height: 1px;
  margin: 0 16px;
  background: var(--border);
  border: 0;
}

/* notice banner */
.banner {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  text-decoration: none;
}

.banner .msg {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.banner .lead {
  color: var(--accent);
}

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

.banner:hover {
  border-color: var(--border-strong);
}

/* -------------------------------------------------------------------- hero */

.hero {
  background: var(--hero);
  color: var(--on-hero);
  border-radius: 16px;
  padding: 16px 18px 18px;
}

.hero-top {
  display: flex;
  align-items: center;
  min-height: 28px;
}

.hero-top .kicker {
  flex: 1;
  color: var(--on-hero-muted);
  font-size: 12px;
  font-weight: 600;
}

.streak-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 10px 3px 6px;
  border: 1px solid var(--hero-track);
  border-radius: 999px;
  color: var(--on-hero);
  font-size: 12px;
  font-weight: 600;
}

.streak-chip .icon {
  width: 16px;
  height: 16px;
  color: var(--streak);
}

.hero-title {
  margin-top: 12px;
  font-size: 23px;
  line-height: 1.25;
  color: var(--on-hero);
}

.hero-desc {
  margin-top: 4px;
  color: var(--on-hero-muted);
  font-size: 13px;
  line-height: 1.4;
}

.hero .progress {
  margin-top: 14px;
  background: var(--hero-track);
}

.hero-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  color: var(--on-hero-muted);
  font-size: 12px;
}

.hero .btn {
  margin-top: 16px;
}

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

.progress {
  position: relative;
  height: 5px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--track);
}

.progress > span {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  border-radius: 999px;
  background: var(--accent);
  transition: width 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.progress.done > span {
  background: var(--correct);
}

.progress.thick {
  height: 8px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 52px;
  padding: 12px 20px;
  border: 0;
  border-radius: 10px;
  background: var(--primary-button);
  color: var(--on-primary-button);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: filter 0.15s ease, background-color 0.15s ease;
}

.btn:hover:not(:disabled) {
  filter: brightness(1.08);
}

:root[data-theme='dark'] .btn:hover:not(:disabled) {
  filter: brightness(0.94);
}

.btn:active:not(:disabled) {
  filter: brightness(0.95);
}

.btn:disabled {
  cursor: default;
  background: var(--surface-alt);
  color: var(--text-muted);
}

.btn-accent {
  background: var(--accent-button);
  color: var(--on-accent);
}

.hero .btn-accent:disabled {
  background: var(--hero-track);
  color: var(--on-hero-muted);
}

.btn-outline {
  min-height: 48px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
  font-size: 15px;
  font-weight: 600;
}

.btn-outline:hover:not(:disabled) {
  filter: none;
  background: var(--surface-alt);
}

.btn-text {
  width: auto;
  min-height: 40px;
  padding: 8px 12px;
  background: transparent;
  color: var(--on-accent-soft);
  font-size: 14px;
  font-weight: 600;
}

:root[data-theme='dark'] .btn-text {
  color: var(--accent);
}

.btn-text:hover:not(:disabled) {
  filter: none;
  background: var(--surface-alt);
}

.btn-text:disabled {
  background: transparent;
}

.btn .icon {
  width: 20px;
  height: 20px;
}

.btn-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --------------------------------------------------------------- list rows */

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 60px;
  padding: 12px 16px;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  text-decoration: none;
}

button.row:hover:not(:disabled),
a.row:hover {
  background: var(--surface-alt);
}

.row:disabled {
  cursor: default;
}

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

.row .title {
  display: block;
  font-size: 15px;
  font-weight: 600;
}

.row .subtitle {
  display: block;
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 13px;
}

.row.is-disabled .title {
  color: var(--text-muted);
}

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

.row-split {
  display: flex;
  align-items: center;
}

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

.row-split .btn-text {
  margin-right: 8px;
}

.well {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: none;
  border-radius: 10px;
  background: var(--surface-alt);
  color: var(--text);
}

.well .icon {
  width: 20px;
  height: 20px;
}

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

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

.well.big {
  width: 64px;
  height: 64px;
  border-radius: 14px;
}

.well.big .icon {
  width: 34px;
  height: 34px;
}

/* ------------------------------------------------------------------ stats */

.stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stat-tile {
  padding: 12px 14px;
}

.stat-tile .label {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
}

.stat-tile .value {
  margin-top: 2px;
  font-size: 21px;
  line-height: 1.3;
}

.stat-tile .caption {
  color: var(--text-muted);
  font-size: 12px;
}

/* weekly goals */
.goal + .goal {
  margin-top: 12px;
}

.goal-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 500;
}

.goal-head .name {
  flex: 1;
}

.goal-head .num {
  color: var(--text-muted);
  font-size: 12px;
}

.goal.done .name {
  color: var(--correct-text);
}

.goal.done .icon {
  width: 16px;
  height: 16px;
  color: var(--correct);
}

/* bonus missions */
.mission .well.done {
  background: var(--correct-bg);
  color: var(--correct);
}

.mission .end-icon {
  color: var(--text-muted);
}

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

/* get the app */
.app-card {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-card img {
  width: 44px;
  height: 44px;
  border-radius: 11px;
}

.app-card .grow {
  flex: 1;
  min-width: 0;
}

.app-card .name {
  font-weight: 600;
}

.app-card .sub {
  font-size: 13px;
}

.play-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.play-link:hover {
  background: var(--surface-alt);
}

.play-link .icon {
  width: 16px;
  height: 16px;
}

.site-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 16px;
  margin-bottom: 8px;
}

.site-footer a {
  color: var(--text-2);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--text);
  text-decoration: underline;
}

@media (max-width: 380px) {
  .app-card {
    flex-wrap: wrap;
  }

  .play-link {
    margin-left: 56px;
  }
}

/* ------------------------------------------------------------- onboarding */

.onboarding {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 520px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  padding: 28px 24px 28px;
  text-align: center;
}

.onboarding .brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 13px;
}

.ob-slides {
  display: flex;
  flex: 1;
  align-items: center;
  width: 100%;
  min-height: 300px;
}

.ob-slide {
  width: 100%;
  padding: 20px 4px;
  animation: fade-up 0.3s ease both;
}

.ob-slide .well {
  width: 80px;
  height: 80px;
  margin: 0 auto;
  border-radius: 18px;
  background: var(--accent-soft);
  color: var(--on-accent-soft);
}

.ob-slide .well .icon {
  width: 44px;
  height: 44px;
}

.ob-slide h1 {
  margin-top: 28px;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.3px;
}

.ob-slide p {
  margin-top: 14px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.5;
}

.ob-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 22px;
}

.ob-dots span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--border-strong);
  transition: width 0.22s ease, background-color 0.22s ease;
}

.ob-dots span.on {
  width: 22px;
  background: var(--accent);
}

.ob-actions {
  width: 100%;
}

.ob-actions .btn-text {
  margin-top: 4px;
}

.ob-note {
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------- quiz */

.quiz {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 640px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  padding: 0 20px 16px;
  padding-left: max(20px, env(safe-area-inset-left));
  padding-right: max(20px, env(safe-area-inset-right));
}

.quiz-top {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 56px;
  margin-left: -8px;
}

.quiz-top .progress {
  flex: 1;
}

.quiz-top .pos {
  min-width: 44px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  text-align: right;
}

.status-row {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 22px;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
}

.status-row .label {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-row .streak {
  display: inline-flex;
  align-items: center;
  color: var(--streak);
}

.status-row .streak .icon {
  width: 16px;
  height: 16px;
}

.prompt-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 8px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  text-align: center;
}

.prompt-card .label {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
}

.prompt-card .prompt {
  margin-top: 8px;
  overflow-wrap: anywhere;
}

.prompt-card .prompt.ko {
  font-size: 38px;
  line-height: 1.2;
}

.prompt-card .prompt.ko.long {
  font-size: 30px;
}

.prompt-card .prompt.en {
  font-size: 23px;
  font-weight: 700;
  line-height: 1.3;
}

.prompt-card .prompt.en.long {
  font-size: 19px;
}

.prompt-card .hint {
  margin-top: 8px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.35;
}

.prompt-card .speak {
  margin-top: 12px;
}

.speak {
  display: none;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--text);
}

.tts-on .speak {
  display: inline-grid;
}

.speak .icon {
  width: 20px;
  height: 20px;
}

.speak:hover {
  filter: brightness(0.96);
}

.speak.sm {
  width: 34px;
  height: 34px;
}

.speak.sm .icon {
  width: 17px;
  height: 17px;
}

.hint-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 10px;
}

.hint-slot.hidden .btn-text {
  visibility: hidden;
}

.hint-box {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--on-accent-soft);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.35;
}

.hint-box .icon {
  width: 18px;
  height: 18px;
}

.choices-label {
  margin: 10px 2px 8px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
}

.choices {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.choice {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 52px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  text-align: left;
  transition: background-color 0.22s ease, border-color 0.22s ease, color 0.22s ease, opacity 0.22s ease;
}

.choice.ko {
  font-size: 17px;
}

.choice .txt {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}

.choice .key {
  display: none;
  place-items: center;
  width: 22px;
  height: 22px;
  flex: none;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
}

@media (hover: hover) and (pointer: fine) {
  .choice .key {
    display: grid;
  }

  .choice:not([aria-disabled='true']):hover {
    border-color: var(--border-strong);
    background: var(--surface-alt);
  }
}

.choice .mark {
  width: 20px;
  height: 20px;
  visibility: hidden;
}

.choice[aria-disabled='true'] {
  cursor: default;
}

.choice.is-correct {
  border-color: var(--correct);
  box-shadow: inset 0 0 0 0.5px var(--correct);
  background: var(--correct-bg);
  color: var(--correct-text);
}

.choice.is-wrong {
  border-color: var(--wrong);
  box-shadow: inset 0 0 0 0.5px var(--wrong);
  background: var(--wrong-bg);
  color: var(--wrong-text);
}

.choice.is-correct .mark,
.choice.is-wrong .mark {
  visibility: visible;
}

.choice.is-correct .mark {
  color: var(--correct);
}

.choice.is-wrong .mark {
  color: var(--wrong);
}

.choice.is-dim {
  opacity: 0.45;
}

.choice.is-hidden {
  visibility: hidden;
}

.feedback-slot {
  position: sticky;
  bottom: 0;
  margin-top: 12px;
  padding-bottom: env(safe-area-inset-bottom);
}

.feedback {
  padding: 12px 12px 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 -10px 24px -18px rgba(0, 0, 0, 0.35);
  animation: fade-up 0.26s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.feedback-head {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
}

.feedback-head .verdict {
  flex: 1;
  font-size: 16px;
  font-weight: 700;
}

.feedback.ok .verdict,
.feedback.ok .feedback-head > .icon {
  color: var(--correct);
}

.feedback.no .verdict,
.feedback.no .feedback-head > .icon {
  color: var(--wrong);
}

:root[data-theme='light'] .feedback.ok .verdict {
  color: var(--correct-text);
}

:root[data-theme='light'] .feedback.no .verdict {
  color: var(--wrong-text);
}

.feedback .answer {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
}

.feedback .detail {
  margin-top: 6px;
  padding-right: 4px;
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.4;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.feedback .detail.ko-serif {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
}

.feedback .btn {
  margin-top: 12px;
}

.kbd-help {
  display: none;
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
}

.kbd-help kbd {
  padding: 1px 5px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  font: inherit;
  font-weight: 600;
}

@media (hover: hover) and (pointer: fine) {
  .kbd-help {
    display: block;
  }
}

@media (min-width: 900px) {
  .quiz {
    padding-top: 12px;
  }

  .prompt-card {
    padding: 28px 24px;
  }

  .prompt-card .prompt.ko {
    font-size: 48px;
  }

  .prompt-card .prompt.ko.long {
    font-size: 36px;
  }

  .prompt-card .prompt.en {
    font-size: 26px;
  }
}

/* loading */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 50vh;
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--track);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ------------------------------------------------------------------ result */

.result {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 560px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  padding: 16px 24px 24px;
  text-align: center;
}

.result .spacer-2 {
  flex: 2;
  min-height: 24px;
}

.result .spacer-3 {
  flex: 3;
  min-height: 24px;
}

.stars {
  display: flex;
  gap: 8px;
}

.stars .icon {
  width: 52px;
  height: 52px;
  color: var(--border-strong);
  animation: star-pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.stars .icon.on {
  color: var(--accent);
}

.stars .icon:nth-child(2) {
  animation-delay: 0.12s;
}

.stars .icon:nth-child(3) {
  animation-delay: 0.24s;
}

.result h1 {
  margin-top: 18px;
  font-size: 28px;
}

.result .lead {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 15px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 6px 14px 6px 10px;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}

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

.pill.flame .icon {
  color: var(--streak);
}

.pill.good {
  background: var(--correct-bg);
  color: var(--correct-text);
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
  margin-top: 28px;
  padding: 16px 0;
}

.result-stats > div + div {
  border-left: 1px solid var(--border);
}

.result-stats .value {
  font-size: 26px;
  line-height: 1.25;
}

.result-stats .label {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
}

.result .btn-row {
  width: 100%;
}

/* ------------------------------------------------------------- word lists */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  min-height: 36px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 14px;
  font-weight: 600;
}

.chip[aria-pressed='true'] {
  border-color: transparent;
  background: var(--accent-soft);
  color: var(--on-accent-soft);
}

.search {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
}

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

.word-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 760px) {
  .page-list {
    max-width: 960px;
  }

  .word-list {
    grid-template-columns: 1fr 1fr;
  }
}

.word-tile {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 14px 10px 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}

.word-tile .grow {
  flex: 1;
  min-width: 0;
}

.word-tile .pos {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
}

.word-tile .ko {
  margin-top: 2px;
  font-size: 19px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.word-tile .en {
  margin-top: 2px;
  color: var(--on-accent-soft);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
}

.word-tile .ex {
  margin-top: 4px;
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.word-tile.compact {
  padding-top: 10px;
  padding-bottom: 10px;
}

.word-tile.compact .ko {
  font-size: 17px;
}

.word-tile.compact .en {
  font-size: 13px;
}

.word-tile.compact .ex {
  font-size: 12px;
}

.list-meta {
  color: var(--text-muted);
  font-size: 13px;
}

/* empty state */
.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 55vh;
  padding: 0 32px;
  text-align: center;
}

.empty h2 {
  margin-top: 16px;
  font-size: 19px;
}

.empty p {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.4;
}

.empty .btn {
  max-width: 280px;
  margin-top: 20px;
}

/* --------------------------------------------------------------- settings */

.section-label {
  margin: 20px 4px 8px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
}

.segmented {
  display: grid;
  grid-auto-columns: 1fr;
  grid-auto-flow: column;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 999px;
}

.segmented button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 6px 10px;
  border: 0;
  background: var(--surface);
  color: var(--text-2);
  font-size: 14px;
  font-weight: 600;
}

.segmented button + button {
  border-left: 1px solid var(--border);
}

.segmented button[aria-checked='true'] {
  background: var(--accent-soft);
  color: var(--on-accent-soft);
}

.segmented .icon {
  width: 18px;
  height: 18px;
}

.setting-note {
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 13px;
}

.stat-line {
  display: flex;
  padding: 6px 0;
}

.stat-line .k {
  flex: 1;
  color: var(--text-2);
}

.stat-line .v {
  font-weight: 700;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
}

.toggle-row .grow {
  flex: 1;
}

.toggle-row .title {
  display: block;
  font-size: 16px;
}

.toggle-row .subtitle {
  display: block;
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 13px;
}

.switch {
  position: relative;
  width: 52px;
  height: 32px;
  flex: none;
  padding: 0;
  border: 2px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface-alt);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.switch::after {
  content: '';
  position: absolute;
  top: 4px;
  left: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.switch[aria-checked='true'] {
  border-color: var(--accent-button);
  background: var(--accent-button);
}

.switch[aria-checked='true']::after {
  background: var(--on-accent);
  transform: translateX(20px);
}

.switch:disabled {
  opacity: 0.5;
  cursor: default;
}

.slider-row {
  padding: 4px 16px 14px;
}

.slider-row label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.slider-row output {
  color: var(--text-muted);
}

.slider-row input[type='range'] {
  width: 100%;
  margin-top: 8px;
  accent-color: var(--accent-button);
}

.setting-tile {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 52px;
  padding: 12px 16px;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 16px;
  text-align: left;
  text-decoration: none;
}

.setting-tile .grow {
  flex: 1;
}

.setting-tile .trail {
  color: var(--text-muted);
}

button.setting-tile:hover:not(:disabled),
a.setting-tile:hover {
  background: var(--surface-alt);
}

.setting-tile:disabled {
  cursor: default;
  color: var(--text-muted);
}

.setting-tile.danger:not(:disabled) .grow {
  color: var(--wrong);
}

.card.flush > :first-child {
  border-top-left-radius: 13px;
  border-top-right-radius: 13px;
}

.card.flush > :last-child {
  border-bottom-left-radius: 13px;
  border-bottom-right-radius: 13px;
}

.card.list {
  padding: 0;
  overflow: hidden;
}

/* notices */
.notice-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  text-align: left;
}

.notice-item:hover {
  border-color: var(--border-strong);
}

.notice-item .grow {
  flex: 1;
  min-width: 0;
}

.notice-item .t {
  font-weight: 600;
}

.notice-item.unseen .t {
  font-weight: 700;
}

.notice-item .d {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 13px;
}

.dot {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 50%;
  background: var(--accent);
}

/* ------------------------------------------------------------- dialogs */

dialog {
  width: min(420px, calc(100vw - 40px));
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: var(--scrim);
}

.dialog-body {
  padding: 22px 22px 8px;
}

.dialog-body h2 {
  font-size: 19px;
  line-height: 1.3;
}

.dialog-body .date {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 12px;
}

.dialog-body p.msg {
  margin-top: 10px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.45;
  white-space: pre-line;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 4px;
  padding: 8px 12px 12px;
}

.dialog-actions .danger {
  color: var(--wrong);
}

/* toast */
#toast {
  position: fixed;
  left: 50%;
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 30;
  max-width: calc(100vw - 40px);
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--hero);
  color: var(--on-hero);
  font-size: 14px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

:root[data-theme='dark'] #toast {
  background: var(--surface-alt);
  color: var(--text);
}

#toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* splash (before JS runs) */
.splash {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 24px;
  text-align: center;
}

.splash img {
  width: 112px;
  height: 112px;
  border-radius: 26px;
}

.splash h1 {
  margin-top: 24px;
  font-size: 28px;
}

.splash p {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 15px;
}

.storage-note {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--on-accent-soft);
  font-size: 13px;
  font-weight: 600;
}

/* --------------------------------------------------------------- motion */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes star-pop {
  from {
    opacity: 0;
    transform: scale(0.4);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}