/* Final shared visual layer for lesson, vocabulary, and extension activities. */
:root {
  --learn-navy: #10233f;
  --learn-navy-deep: #09182d;
  --learn-emerald: #168572;
  --learn-emerald-bright: #2ab89f;
  --learn-emerald-soft: #e6f7f2;
  --learn-ink: #17263a;
  --learn-muted: #647287;
  --learn-line: #dbe3e8;
  --learn-canvas: #eef2f3;
  --learn-paper: #ffffff;
  --learn-shadow: 0 14px 34px rgba(16, 35, 63, .10);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Segoe UI", sans-serif;
}

body:has(.layout),
body:has(.vocab-shell),
body:has(#skills-app) {
  color: var(--learn-ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body:has(.layout) button,
body:has(.layout) input,
body:has(.layout) textarea,
body:has(.vocab-shell) button,
body:has(.vocab-shell) input,
body:has(.vocab-shell) textarea,
body:has(#skills-app) button,
body:has(#skills-app) input,
body:has(#skills-app) textarea {
  font-family: inherit;
}

body:has(.layout) input[type="text"],
body:has(.layout) textarea,
body:has(.vocab-shell) input,
body:has(#skills-app) input:not([type="radio"]):not([type="checkbox"]),
body:has(#skills-app) textarea {
  font-size: 16px;
}

body:has(.layout) :focus-visible,
body:has(.vocab-shell) :focus-visible,
body:has(#skills-app) :focus-visible {
  outline: 3px solid rgba(42, 184, 159, .52);
  outline-offset: 3px;
}

/* Day 1 lesson */
body:has(.layout) {
  background: var(--learn-canvas);
}

body:has(.layout) > header {
  min-height: 64px;
  height: auto;
  gap: 9px;
  padding: 7px 12px;
}

body:has(.layout) > header .brand {
  gap: 7px;
  font-size: 16px;
}

body:has(.layout) > header .brand span {
  width: 36px;
  height: 36px;
}

body:has(.layout) > header > div {
  flex: 1 1 auto;
  overflow: hidden;
}

body:has(.layout) > header > div > b {
  overflow: hidden;
  font-size: 15px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

body:has(.layout) > header .ghost {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 44px;
  padding: 8px 10px;
  font-size: 13px;
  line-height: 1.2;
}

body:has(.layout) .layout {
  gap: 12px;
  padding-top: 10px;
}

body:has(.layout) nav#stageNav {
  gap: 3px;
  padding: 4px;
  border-radius: 15px;
}

body:has(.layout) .nav-step {
  grid-template-rows: 20px auto;
  min-height: 48px;
  padding: 4px 1px;
  border-radius: 10px;
}

body:has(.layout) .nav-step i {
  width: 20px;
  height: 20px;
  font-size: 11px;
}

body:has(.layout) .nav-step span {
  font-size: 12px;
  font-weight: 750;
  line-height: 1.05;
  letter-spacing: -.065em;
}

body:has(.layout) .stage-card {
  padding: 22px 18px;
  border-radius: 20px;
}

body:has(.layout) .kicker,
body:has(.layout) .fine,
body:has(.layout) .lecture-status {
  font-size: 13px;
}

body:has(.layout) .stage-title {
  font-size: 26px;
  line-height: 1.3;
}

body:has(.layout) .mini-card b,
body:has(.layout) .sentence {
  font-family: inherit;
  font-size: 18px;
}

body:has(.layout) .lead,
body:has(.layout) .goal,
body:has(.layout) .mini-card p,
body:has(.layout) .question h3,
body:has(.layout) .choice,
body:has(.layout) .feedback,
body:has(.layout) .book-link,
body:has(.layout) .check,
body:has(.layout) .rule-list,
body:has(.layout) .sentence {
  font-size: 16px;
  line-height: 1.65;
}

body:has(.layout) .question label,
body:has(.layout) .score-box span,
body:has(.layout) .book-coach-note,
body:has(.layout) .book-coach-note b {
  font-size: 14px;
}

body:has(.layout) .choice,
body:has(.layout) .btn,
body:has(.layout) .book-link,
body:has(.layout) .check,
body:has(.layout) .tts-panel .btn {
  min-height: 48px;
}

body:has(.layout) .btn {
  padding: 11px 16px;
  font-size: 15px;
}

body:has(.layout) .video-art {
  padding-top: 198px;
}

body:has(.layout) .video-top,
body:has(.layout) .video-top span:last-child {
  font-size: 13px;
}

body:has(.layout) .video-art .book-background {
  height: 198px;
  opacity: .72;
}

body:has(.layout) .video-art::before {
  background: linear-gradient(180deg, rgba(16, 35, 63, 0) 0%, rgba(16, 35, 63, .04) 54%, #10233f 100%);
}

body:has(.layout) .book-source {
  top: 154px;
  min-height: 40px;
  padding: 8px 10px;
  font-size: 13px;
}

body:has(.layout) .focus-card {
  padding: 16px 14px;
  background: rgba(9, 24, 45, .97);
}

body:has(.layout) .focus-card h2 {
  font-size: 20px;
  line-height: 1.45;
}

body:has(.layout) .focus-card p:not(.video-tag),
body:has(.layout) .focus-card .video-tag,
body:has(.layout) .focus-card p b,
body:has(.layout) .focus-card .vocab-row > b,
body:has(.layout) .vocab-hint {
  font-size: 14px !important;
  line-height: 1.55 !important;
}

body:has(.layout) .focus-card .vocab-row {
  grid-template-columns: 1fr;
  gap: 6px;
  margin-top: 12px;
}

body:has(.layout) .vocab-list {
  gap: 7px;
}

body:has(.layout) .vocab-speak {
  min-height: 48px;
  padding: 9px 11px;
  font-size: 16px;
  line-height: 1.25;
}

body:has(.layout) .vocab-listen {
  font-size: 13px;
}

body:has(.layout) .video-caption {
  min-height: 92px;
  padding: 14px;
  font-size: 17px;
  line-height: 1.7;
}

body:has(.layout) .caption-label {
  font-size: 13px;
}

body:has(.layout) .scene-seek {
  grid-template-columns: 48px minmax(0, 1fr) 48px auto;
  min-height: 54px;
  gap: 8px;
}

body:has(.layout) .seek-btn {
  width: 48px;
  height: 48px;
}

body:has(.layout) .seek-count {
  font-size: 13px;
}

/* Vocabulary */
body:has(.vocab-shell) {
  background: #e8edef;
}

body:has(.vocab-shell) .vocab-shell {
  width: min(430px, 100%);
  color: var(--learn-ink);
  background: var(--learn-canvas);
  box-shadow: 0 0 44px rgba(16, 35, 63, .10);
}

body:has(.vocab-shell) .vocab-top {
  position: sticky;
  z-index: 5;
  top: 0;
  min-height: 64px;
  gap: 12px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 4px 18px rgba(16, 35, 63, .04);
  backdrop-filter: blur(14px);
}

body:has(.vocab-shell) .vocab-top b {
  overflow: hidden;
  color: var(--learn-navy);
  font-size: 17px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

body:has(.vocab-shell) .vocab-top a {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  min-height: 44px;
  color: var(--learn-emerald);
  font-size: 14px;
}

body:has(.vocab-shell) #vocabularyApp {
  padding: 12px;
}

body:has(.vocab-shell) .englup-vocabulary {
  --ev-blue: var(--learn-emerald);
  --ev-pale: var(--learn-emerald-soft);
  max-width: 100%;
  font-size: 16px;
  line-height: 1.68;
}

body:has(.vocab-shell) .ev-panel {
  margin: 10px 0;
  padding: 20px;
  border-color: var(--learn-line);
  border-radius: 20px;
  box-shadow: var(--learn-shadow);
}

body:has(.vocab-shell) .ev-panel h2 {
  color: var(--learn-navy);
  font-size: 24px;
  line-height: 1.35;
}

body:has(.vocab-shell) .ev-panel h3 {
  font-size: 19px;
  line-height: 1.45;
}

body:has(.vocab-shell) .ev-eyebrow,
body:has(.vocab-shell) .ev-action-grid small,
body:has(.vocab-shell) .ev-progress,
body:has(.vocab-shell) .ev-stats span {
  font-size: 13px;
}

body:has(.vocab-shell) .ev-muted,
body:has(.vocab-shell) .ev-action-grid p,
body:has(.vocab-shell) .ev-feedback,
body:has(.vocab-shell) .ev-data p {
  font-size: 16px;
  line-height: 1.65;
}

body:has(.vocab-shell) .ev-action-grid {
  grid-template-columns: 1fr;
  gap: 12px;
}

body:has(.vocab-shell) .ev-action-grid article {
  padding: 18px;
  border-color: #d9e8e4;
  background: #f6fbf9;
}

body:has(.vocab-shell) .ev-count {
  color: #075f52;
  background: #d9f3ec;
}

body:has(.vocab-shell) .englup-vocabulary button,
body:has(.vocab-shell) .ev-file,
body:has(.vocab-shell) .ev-session input {
  min-height: 48px;
  font-size: 16px;
}

body:has(.vocab-shell) .ev-stats {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}

body:has(.vocab-shell) .ev-stats div {
  min-height: 80px;
  padding: 12px 7px;
}

body:has(.vocab-shell) .ev-stats strong {
  font-size: 24px;
}

body:has(.vocab-shell) .ev-word {
  color: var(--learn-navy);
  font-size: clamp(40px, 12vw, 58px);
  line-height: 1.15;
}

body:has(.vocab-shell) .ev-meaning,
body:has(.vocab-shell) .ev-session blockquote span {
  font-size: 18px;
}

body:has(.vocab-shell) .ev-session blockquote {
  border-left-color: var(--learn-emerald-bright);
  background: #f4f8f7;
}

body:has(.vocab-shell) .ev-session blockquote small {
  font-size: 14px;
}

/* Skills extension */
body:has(#skills-app) {
  width: min(430px, 100vw);
  min-height: 100vh;
  margin: 0 auto;
  overflow-x: hidden;
  background: var(--learn-canvas);
  box-shadow: 0 0 44px rgba(16, 35, 63, .10);
}

body:has(#skills-app) .sk-header {
  position: sticky;
  z-index: 5;
  top: 0;
  min-height: 64px;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 4px 18px rgba(16, 35, 63, .04);
  backdrop-filter: blur(14px);
}

body:has(#skills-app) .sk-header span {
  overflow: hidden;
  color: var(--learn-navy);
  font-size: 17px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

body:has(#skills-app) .sk-header a {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: center;
  min-height: 44px;
  color: var(--learn-emerald);
  font-size: 14px;
  white-space: nowrap;
}

body:has(#skills-app) #skills-app {
  max-width: 430px;
  padding: 12px;
}

body:has(#skills-app) .sk-card {
  padding: 20px;
  border-color: var(--learn-line);
  border-radius: 20px;
  box-shadow: var(--learn-shadow);
}

body:has(#skills-app) .sk-card h1 {
  color: var(--learn-navy);
  font-size: 26px;
  line-height: 1.32;
}

body:has(#skills-app) .sk-card h2 {
  color: var(--learn-navy);
  font-size: 21px;
  line-height: 1.45;
}

body:has(#skills-app) .sk-card p,
body:has(#skills-app) .sk-passage,
body:has(#skills-app) .sk-option,
body:has(#skills-app) .sk-check,
body:has(#skills-app) .sk-feedback,
body:has(#skills-app) .sk-status,
body:has(#skills-app) .sk-alert,
body:has(#skills-app) .sk-card li {
  font-size: 16px;
  line-height: 1.68;
}

body:has(#skills-app) .sk-kicker,
body:has(#skills-app) .sk-note,
body:has(#skills-app) .sk-results em {
  font-size: 13px;
}

body:has(#skills-app) .sk-card label,
body:has(#skills-app) .sk-results span,
body:has(#skills-app) .sk-card summary {
  font-size: 14px;
}

body:has(#skills-app) .sk-card button,
body:has(#skills-app) .sk-download,
body:has(#skills-app) .sk-home,
body:has(#skills-app) .sk-option,
body:has(#skills-app) .sk-check {
  min-height: 48px;
}

body:has(#skills-app) .sk-card button,
body:has(#skills-app) .sk-download {
  margin: 5px 0;
  padding: 11px 16px;
  font-size: 16px;
}

body:has(#skills-app) .sk-card .sk-secondary {
  color: var(--learn-navy);
  background: #e9f2ef;
}

body:has(#skills-app) .sk-passage,
body:has(#skills-app) .sk-option,
body:has(#skills-app) .sk-check,
body:has(#skills-app) .sk-results div {
  background: #f4f8f7;
}

body:has(#skills-app) .sk-starters span {
  color: #075f52;
  background: var(--learn-emerald-soft);
  font-size: 14px;
}

body:has(#skills-app) .sk-steps {
  gap: 6px;
  overflow: visible;
}

body:has(#skills-app) .sk-steps li {
  padding: 8px 4px;
  color: #075f52;
  background: var(--learn-emerald-soft);
  font-size: 13px;
}

body:has(#skills-app) .sk-results {
  grid-template-columns: 1fr;
}

body:has(#skills-app) .sk-home {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--learn-emerald);
}

@media (max-width: 430px) {
  body:has(.layout) .layout {
    width: calc(100% - 20px);
  }

  body:has(.layout) .video-controls .btn,
  body:has(.vocab-shell) .ev-session > button:not(.ev-link),
  body:has(.vocab-shell) .ev-session form button,
  body:has(#skills-app) .sk-card > button,
  body:has(#skills-app) .sk-question > button,
  body:has(#skills-app) .sk-card form > button {
    width: 100%;
  }
}

@media (max-width: 360px) {
  body:has(.layout) > header {
    gap: 5px;
    padding-inline: 7px;
  }

  body:has(.layout) > header .brand b {
    display: none;
  }

  body:has(.layout) > header .brand span {
    width: 34px;
    height: 34px;
  }

  body:has(.layout) > header .ghost {
    padding-inline: 7px;
    font-size: 12px;
  }

  body:has(.layout) .nav-step span {
    font-size: 11px;
  }

  body:has(.layout) .stage-card,
  body:has(.vocab-shell) .ev-panel,
  body:has(#skills-app) .sk-card {
    padding: 17px 14px;
  }

  body:has(.vocab-shell) .vocab-top,
  body:has(#skills-app) .sk-header {
    padding-inline: 9px;
  }

  body:has(.vocab-shell) .vocab-top b,
  body:has(#skills-app) .sk-header span {
    font-size: 15px;
  }

  body:has(#skills-app) .sk-header a {
    font-size: 13px;
  }

  body:has(#skills-app) .sk-steps li {
    font-size: 12px;
  }
}

@media (max-width: 320px) {
  body:has(.layout) .nav-step span {
    font-size: 11px;
    letter-spacing: -.09em;
  }

  body:has(.layout) > header > div {
    display: none;
  }

  body:has(.layout) .scene-seek {
    grid-template-columns: 44px minmax(0, 1fr) 44px;
  }

  body:has(.layout) .scene-seek .seek-count {
    grid-column: 1 / -1;
    text-align: center;
  }

  body:has(#skills-app) .sk-header span {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  body:has(.layout) *,
  body:has(.vocab-shell) *,
  body:has(#skills-app) * {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}