/* ═══════════════════════════════════════════════════════════
   ULЕТАЙ — GRADED READER
   Theme: Polovtsian steppe, Prince Igor, midnight gold
   ═══════════════════════════════════════════════════════════ */

/* body padding-bottom is set dynamically by AudioPlayer.init() */

:root {
  --sky-deep:      #080c18;
  --sky-mid:       #0f1928;
  --sky-light:     #1a2a40;
  --sky-horizon:   #1e3455;

  --gold:          #c9a84c;
  --gold-bright:   #e8c97a;
  --gold-pale:     #f5e8c0;
  --gold-dim:      #7a6430;

  --crimson:       #7a2030;
  --crimson-soft:  #a03548;
  --rose:          #c5687a;

  --cream:         #f0e6d0;
  --cream-warm:    #e8d8b8;
  --cream-dark:    #c8b890;

  --text-primary:  #f0e6d0;
  --text-secondary:#b8a888;
  --text-dim:      #706858;

  --card-bg:       #141e30;
  --card-bg-warm:  #1a2238;
  --card-border:   #2a3a54;
  --card-learned:  #1a2a1e;
  --card-learned-border: #2a4830;

  --font-display:  'Playfair Display', 'Georgia', serif;
  --font-body:     'Crimson Text', 'Georgia', serif;
  --font-russian:  'Noto Serif', 'Georgia', serif;

  --radius:        8px;
  --radius-lg:     16px;
  --transition:    0.3s ease;
}

/* ── RESET & BASE ─────────────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--sky-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── STAR FIELD BACKGROUND ────────────────────────────────── */

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(201,168,76,0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(122,32,48,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 0%, rgba(30,52,85,0.8) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Twinkling stars (CSS only) */
body::after {
  content: '✦ · ✦ · · ✦ · ✦ · · · ✦ · · ✦ ✦ · ✦ · · ✦ · ✦ · ✦ · · · ✦ · ✦ ✦ · · ✦';
  position: fixed;
  inset: 0;
  font-size: 8px;
  color: rgba(201,168,76,0.2);
  letter-spacing: 30px;
  line-height: 60px;
  word-break: break-all;
  pointer-events: none;
  z-index: 0;
  animation: twinkle 8s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0%   { opacity: 0.3; }
  100% { opacity: 0.8; }
}

/* ── LOADING SCREEN ───────────────────────────────────────── */

.loading-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 100;
}

.loading-ornament {
  font-size: 3rem;
  color: var(--gold);
  animation: pulse-gold 1.5s ease-in-out infinite;
}

@keyframes pulse-gold {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50%       { opacity: 1;   transform: scale(1.1); }
}

/* ── PROGRESS NAV ─────────────────────────────────────────── */

.progress-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: linear-gradient(to bottom, rgba(8,12,24,0.95), transparent);
  backdrop-filter: blur(4px);
}

.progress-nav.hidden { display: none; }

.progress-stages {
  display: flex;
  gap: 6px;
  flex: 1;
  align-items: center;
}

.stage-pip {
  height: 4px;
  flex: 1;
  border-radius: 2px;
  background: var(--sky-light);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  position: relative;
}

.stage-pip.active {
  background: var(--gold);
  transform: scaleY(2);
}

.stage-pip.completed {
  background: var(--gold-dim);
}

.stage-pip:hover {
  background: var(--gold-bright);
}

.stage-pip[title]:hover::after {
  content: attr(title);
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--sky-mid);
  border: 1px solid var(--card-border);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 0.7rem;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  z-index: 60;
}

.nav-btn {
  background: none;
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.nav-btn:hover:not(:disabled) {
  border-color: var(--gold);
  color: var(--gold);
}

.nav-btn:disabled {
  opacity: 0.2;
  cursor: default;
}

/* ── MAIN APP CONTAINER ───────────────────────────────────── */

#app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

/* ── STAGE WRAPPER ────────────────────────────────────────── */

.stage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  animation: stage-enter 0.6s ease-out;
}

@keyframes stage-enter {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── ORNAMENTAL DIVIDER ───────────────────────────────────── */

.ornament {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gold-dim);
  font-size: 0.8rem;
  letter-spacing: 6px;
}

.ornament::before,
.ornament::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold-dim), transparent);
}

/* ═══════════════════════════════════════════════════════════
   STAGE 0 — INTRO / STORY
   ═══════════════════════════════════════════════════════════ */

.stage-intro {
  align-items: center;
  justify-content: center;
  padding: 80px 24px 40px;
  text-align: center;
  gap: 0;
}

.intro-sigil {
  font-size: 4rem;
  margin-bottom: 12px;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

.intro-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  color: var(--gold-bright);
  font-style: italic;
  line-height: 1.2;
  margin-bottom: 6px;
}

.intro-subtitle {
  font-family: var(--font-display);
  font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  color: var(--text-secondary);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 40px;
}

.intro-panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  max-width: 900px;
  width: 100%;
  margin-bottom: 40px;
}

.intro-panel {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: left;
}

.intro-panel-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.intro-panel h3 {
  font-family: var(--font-display);
  color: var(--gold);
  font-size: 1rem;
  margin-bottom: 10px;
  font-weight: 600;
}

.intro-panel p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.intro-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-dim), var(--gold));
  color: var(--sky-deep);
  border: none;
  padding: 14px 40px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 40px;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(201,168,76,0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201,168,76,0.4);
  background: linear-gradient(135deg, var(--gold), var(--gold-bright));
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--card-border);
  padding: 10px 24px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  border-radius: 40px;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-secondary:hover {
  border-color: var(--gold-dim);
  color: var(--gold);
}

.intro-hint {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ═══════════════════════════════════════════════════════════
   STAGE 1 — WORD GARDEN
   ═══════════════════════════════════════════════════════════ */

.stage-words {
  padding: 70px 24px 40px;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.stage-header {
  text-align: center;
  margin-bottom: 36px;
}

.stage-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--gold-dim);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.stage-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2rem);
  color: var(--gold-bright);
  font-style: italic;
  margin-bottom: 10px;
}

.stage-intro-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 580px;
  margin: 0 auto;
}

/* Category label */
.word-category-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin: 32px 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.word-category-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--gold-dim), transparent);
}

/* Word card grid */
.word-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

/* ── WORD CARD ────────────────────────────────────────────── */

.word-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px 16px 16px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  user-select: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.word-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4), 0 0 20px rgba(201,168,76,0.08);
}

.word-card.learned {
  background: var(--card-learned);
  border-color: var(--card-learned-border);
}

.word-card.learned::after {
  content: '✓';
  position: absolute;
  top: 8px;
  right: 10px;
  color: var(--gold-dim);
  font-size: 0.7rem;
}

.word-card-emoji {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 4px;
}

.word-card-ru {
  font-family: var(--font-russian);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold-bright);
  line-height: 1.2;
}

.word-card-phonetic {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: var(--font-body);
  font-style: italic;
  letter-spacing: 0.5px;
}

.word-card-en {
  font-size: 0.85rem;
  color: var(--cream-warm);
  font-family: var(--font-body);
}

.word-card-context {
  font-size: 0.72rem;
  color: var(--gold-dim);
  font-style: italic;
  margin-top: 4px;
  line-height: 1.4;
  border-top: 1px solid var(--card-border);
  padding-top: 6px;
}

/* ── PRONUNCIATION GUIDE CARD ─────────────────────────────── */

.pronunc-box {
  background: var(--card-bg-warm);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--gold-dim);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.pronunc-box strong {
  color: var(--gold);
  font-family: var(--font-russian);
}

.pronunc-box em {
  color: var(--cream-warm);
  font-style: normal;
}

/* ── STAGE CONTINUE ───────────────────────────────────────── */

.stage-continue {
  text-align: center;
  margin-top: 36px;
  padding-bottom: 40px;
}

.progress-text {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 12px;
  font-style: italic;
}

/* ═══════════════════════════════════════════════════════════
   STAGE 2 — PHRASE ECHO (quiz)
   ═══════════════════════════════════════════════════════════ */

.stage-phrases {
  padding: 70px 24px 40px;
  max-width: 780px;
  margin: 0 auto;
  width: 100%;
}

/* Phrase cards */
.phrase-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 28px 24px;
  margin-bottom: 20px;
  transition: all var(--transition);
}

.phrase-card:hover {
  border-color: var(--gold-dim);
}

.phrase-card-number {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.phrase-ru {
  font-family: var(--font-russian);
  font-size: clamp(1.2rem, 3.5vw, 1.6rem);
  color: var(--gold-bright);
  margin-bottom: 8px;
  line-height: 1.4;
}

.phrase-phonetic {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
  margin-bottom: 14px;
}

.phrase-words {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.phrase-word-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 10px;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  background: rgba(201,168,76,0.04);
  cursor: default;
}

.phrase-word-chip .ru {
  font-family: var(--font-russian);
  font-size: 0.95rem;
  color: var(--gold);
}

.phrase-word-chip .en {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

/* ── QUIZ PANEL ───────────────────────────────────────────── */

.quiz-question {
  margin-bottom: 32px;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
}

.quiz-prompt {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.quiz-ru {
  font-family: var(--font-russian);
  font-size: clamp(1.3rem, 4vw, 1.8rem);
  color: var(--gold-bright);
  margin-bottom: 18px;
  line-height: 1.3;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quiz-option {
  background: var(--sky-light);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 12px 18px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  text-align: left;
  transition: all var(--transition);
}

.quiz-option:hover:not(.answered) {
  border-color: var(--gold-dim);
  background: var(--card-bg-warm);
  color: var(--gold-pale);
}

.quiz-option.correct {
  border-color: #4a8a5a;
  background: rgba(74,138,90,0.15);
  color: #9de0ad;
}

.quiz-option.incorrect {
  border-color: var(--crimson);
  background: rgba(122,32,48,0.15);
  color: var(--rose);
}

.quiz-feedback {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  min-height: 1.4em;
}

.quiz-score {
  text-align: center;
  padding: 20px;
  font-family: var(--font-display);
  color: var(--gold);
  font-size: 1.1rem;
  font-style: italic;
}

/* ═══════════════════════════════════════════════════════════
   STAGE 3 — LINE BY LINE
   ═══════════════════════════════════════════════════════════ */

.stage-lines {
  padding: 70px 24px 40px;
  max-width: 820px;
  margin: 0 auto;
  width: 100%;
}

.line-block {
  margin-bottom: 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-border);
  transition: border-color var(--transition);
}

.line-block.active {
  border-color: var(--gold-dim);
  box-shadow: 0 0 24px rgba(201,168,76,0.08);
}

.line-number-bar {
  background: var(--sky-light);
  padding: 8px 20px;
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.line-content {
  background: var(--card-bg);
  padding: 22px 24px;
}

.line-ru-display {
  font-family: var(--font-russian);
  font-size: clamp(1.2rem, 3.5vw, 1.6rem);
  color: var(--gold-bright);
  line-height: 1.5;
  margin-bottom: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: baseline;
}

/* Individual clickable words in line display */
.song-word {
  cursor: pointer;
  border-radius: 3px;
  padding: 0 2px;
  transition: all var(--transition);
  position: relative;
}

.song-word:hover {
  background: rgba(201,168,76,0.15);
  color: var(--gold-bright);
}

.song-word.known {
  color: var(--gold);
}

.song-word.highlighted {
  background: rgba(201,168,76,0.2);
  color: var(--gold-bright);
}

.line-phonetic {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-style: italic;
  margin-bottom: 12px;
  line-height: 1.5;
}

.line-translation {
  font-size: 1rem;
  color: var(--cream-warm);
  font-style: italic;
  line-height: 1.6;
  border-top: 1px solid var(--card-border);
  padding-top: 12px;
  margin-top: 8px;
}

.line-interlinear {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.interlinear-word {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.interlinear-word .ru {
  font-family: var(--font-russian);
  font-size: 1rem;
  color: var(--gold);
  font-weight: 600;
}

.interlinear-word .phonetic {
  font-size: 0.65rem;
  color: var(--text-dim);
  font-style: italic;
}

.interlinear-word .en {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

/* ── REVEAL BUTTON ────────────────────────────────────────── */
.btn-reveal {
  background: rgba(201,168,76,0.1);
  border: 1px solid var(--gold-dim);
  color: var(--gold);
  padding: 8px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 8px;
}

.btn-reveal:hover {
  background: rgba(201,168,76,0.2);
}

.reveal-hidden {
  display: none;
}

.reveal-hidden.revealed {
  display: block;
  animation: reveal-in 0.4s ease-out;
}

@keyframes reveal-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════════
   STAGE 4 — THE FULL SONG
   ═══════════════════════════════════════════════════════════ */

.stage-song {
  padding: 70px 24px 60px;
  max-width: 820px;
  margin: 0 auto;
  width: 100%;
}

.song-scroll {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  margin-bottom: 32px;
  position: relative;
}

/* Illuminated first letter */
.song-scroll::before {
  content: '«';
  position: absolute;
  top: 24px;
  left: 20px;
  font-size: 3rem;
  color: var(--gold-dim);
  font-family: var(--font-display);
  line-height: 1;
  opacity: 0.5;
}

.song-line-wrapper {
  margin-bottom: 6px;
}

.song-line-wrapper + .song-line-wrapper {
  margin-bottom: 6px;
}

/* Stanza break */
.stanza-break {
  height: 20px;
}

.song-full-line {
  font-family: var(--font-russian);
  font-size: clamp(1rem, 2.8vw, 1.3rem);
  color: var(--text-primary);
  line-height: 1.7;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: baseline;
}

/* Phonetic view */
.song-full-line.show-phonetics .song-word::after {
  content: attr(data-phonetic);
  display: block;
  font-size: 0.6rem;
  color: var(--text-dim);
  font-style: italic;
  text-align: center;
  margin-top: 1px;
}

.song-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn-toggle {
  background: var(--sky-light);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  padding: 8px 18px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-toggle:hover,
.btn-toggle.active {
  border-color: var(--gold-dim);
  color: var(--gold);
  background: var(--card-bg-warm);
}

/* Hover translation panel */
.translation-panel {
  background: var(--card-bg-warm);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 24px;
}

.translation-panel h4 {
  font-family: var(--font-display);
  color: var(--gold-dim);
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.translation-line {
  display: flex;
  gap: 16px;
  margin-bottom: 8px;
  align-items: baseline;
  flex-wrap: wrap;
}

.translation-line .ru {
  font-family: var(--font-russian);
  color: var(--gold);
  font-size: 0.95rem;
  min-width: 200px;
}

.translation-line .en {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 0.95rem;
}

/* ── WORD TOOLTIP ─────────────────────────────────────────── */

.word-tooltip {
  position: fixed;
  background: var(--sky-mid);
  border: 1px solid var(--gold-dim);
  border-radius: var(--radius);
  padding: 10px 14px;
  z-index: 200;
  pointer-events: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  max-width: 220px;
  animation: tooltip-in 0.15s ease-out;
}

.word-tooltip.hidden { display: none; }

@keyframes tooltip-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tooltip-ru {
  font-family: var(--font-russian);
  font-size: 1.1rem;
  color: var(--gold-bright);
  margin-bottom: 2px;
}

.tooltip-phonetic {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-style: italic;
  margin-bottom: 4px;
}

.tooltip-en {
  font-size: 0.85rem;
  color: var(--cream);
}

/* ═══════════════════════════════════════════════════════════
   STAGE 5 — REFLECTION
   ═══════════════════════════════════════════════════════════ */

.stage-reflection {
  padding: 70px 24px 60px;
  max-width: 780px;
  margin: 0 auto;
  width: 100%;
  text-align: center;
}

.reflection-sigil {
  font-size: 3.5rem;
  margin: 20px 0;
  animation: float 4s ease-in-out infinite;
}

.achievement-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin: 28px 0;
  text-align: left;
}

.achievement-item {
  background: var(--card-bg);
  border: 1px solid var(--card-learned-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.achievement-item::before {
  content: '✦';
  color: var(--gold);
  flex-shrink: 0;
  margin-top: 2px;
}

.final-song-block {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: left;
  margin: 28px 0;
}

.final-song-block h4 {
  font-family: var(--font-display);
  color: var(--gold-dim);
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 18px;
  text-align: center;
}

.final-song-line {
  font-family: var(--font-russian);
  font-size: 1.1rem;
  color: var(--gold-bright);
  line-height: 2;
}

.final-song-translation {
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-left: 16px;
}

.listen-box {
  background: var(--card-bg-warm);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 24px;
}

.listen-box h4 {
  font-family: var(--font-display);
  color: var(--gold);
  margin-bottom: 8px;
}

.listen-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════════
   QUIZ — WORD MATCHING GAME
   ═══════════════════════════════════════════════════════════ */

.match-game {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0;
}

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

.match-item {
  background: var(--sky-light);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  font-size: 0.95rem;
}

.match-item.ru-item {
  font-family: var(--font-russian);
  color: var(--gold-bright);
  font-size: 1.1rem;
}

.match-item.en-item {
  color: var(--cream-warm);
}

.match-item:hover:not(.matched):not(.selected) {
  border-color: var(--gold-dim);
  background: var(--card-bg-warm);
}

.match-item.selected {
  border-color: var(--gold);
  background: rgba(201,168,76,0.15);
  box-shadow: 0 0 12px rgba(201,168,76,0.2);
}

.match-item.matched {
  border-color: #4a8a5a;
  background: rgba(74,138,90,0.1);
  color: #9de0ad;
  cursor: default;
}

.match-item.wrong {
  border-color: var(--crimson);
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-6px); }
  75%       { transform: translateX(6px); }
}

/* ═══════════════════════════════════════════════════════════
   SHARED UTILITIES
   ═══════════════════════════════════════════════════════════ */

.text-gold    { color: var(--gold); }
.text-dim     { color: var(--text-dim); font-style: italic; }
.text-ru      { font-family: var(--font-russian); }
.mt-8         { margin-top: 8px; }
.mt-16        { margin-top: 16px; }
.mt-24        { margin-top: 24px; }
.mb-8         { margin-bottom: 8px; }

/* ── SEPARATOR LINE ───────────────────────────────────────── */
.sep {
  border: none;
  border-top: 1px solid var(--card-border);
  margin: 24px 0;
}

/* ── SCROLLBAR ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--sky-deep); }
::-webkit-scrollbar-thumb {
  background: var(--gold-dim);
  border-radius: 3px;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 600px) {
  .word-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 8px;
  }

  .word-card {
    padding: 16px 10px 12px;
  }

  .word-card-emoji { font-size: 1.6rem; }
  .word-card-ru    { font-size: 1.1rem; }

  .match-game {
    grid-template-columns: 1fr;
  }

  .phrase-words { gap: 4px; }

  .song-scroll { padding: 28px 20px; }

  .translation-line { flex-direction: column; gap: 2px; }
  .translation-line .ru { min-width: unset; }

  .intro-panels { grid-template-columns: 1fr; }

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

/* ═══════════════════════════════════════════════════════════
   AUDIO PLAYER — collapsible bottom panel (Audiomack embed)
   ═══════════════════════════════════════════════════════════ */

.audio-panel {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: rgba(8, 12, 24, 0.97);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--card-border);
  overflow: hidden;
  transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.audio-panel.collapsed { height: 48px; }
.audio-panel.expanded  { height: 310px; }  /* 48px header + 252px iframe + 10px buffer */

/* Header strip — always visible, click to expand/collapse */
.audio-panel-header {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
}

.audio-panel-header:hover {
  background: rgba(201,168,76,0.05);
}

.audio-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  opacity: 0.8;
  transition: opacity var(--transition);
}

.audio-panel.expanded .audio-icon {
  animation: audio-pulse 2.5s ease-in-out infinite;
}

@keyframes audio-pulse {
  0%, 100% { opacity: 0.5; }
  50%       { opacity: 1; }
}

.audio-titles {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.audio-track {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--gold);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.audio-source {
  font-size: 0.62rem;
  color: var(--text-dim);
  font-style: italic;
  white-space: nowrap;
}

.audio-toggle-lbl {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  flex-shrink: 0;
  transition: color var(--transition);
}

.audio-panel-header:hover .audio-toggle-lbl {
  color: var(--gold);
}

/* The iframe itself */
.audio-frame {
  display: block;
  width: 100%;
  height: 252px;
  border: none;
}

@media (max-width: 540px) {
  .audio-panel-header { padding: 0 14px; gap: 8px; }
  .audio-track { font-size: 0.72rem; }
}

/* ═══════════════════════════════════════════════════════════
   RUSSIAN TTS — PRONOUNCE BUTTON
   ═══════════════════════════════════════════════════════════ */

/* Inline speak trigger on cards */
.speak-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 3px 8px;
  font-size: 0.7rem;
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 4px;
}

.speak-btn:hover {
  border-color: var(--gold-dim);
  color: var(--gold);
  background: rgba(201,168,76,0.08);
}

.speak-btn.speaking {
  color: var(--gold);
  border-color: var(--gold);
  animation: speak-pulse 0.5s ease-in-out infinite alternate;
}

@keyframes speak-pulse {
  from { opacity: 0.6; }
  to   { opacity: 1; }
}

/* Tooltip speak button — pointer-events active for this one */
.word-tooltip {
  pointer-events: none; /* keep as-is for hover tooltips */
}

.word-tooltip.interactive {
  pointer-events: auto;
}

.tooltip-speak {
  display: block;
  width: 100%;
  margin-top: 8px;
  background: rgba(201,168,76,0.1);
  border: 1px solid var(--gold-dim);
  border-radius: 8px;
  padding: 5px 8px;
  font-size: 0.75rem;
  color: var(--gold);
  cursor: pointer;
  text-align: center;
  pointer-events: auto;
  transition: all var(--transition);
}

.tooltip-speak:hover {
  background: rgba(201,168,76,0.2);
}

/* TTS not-supported notice */
.tts-unavailable {
  font-size: 0.65rem;
  color: var(--text-dim);
  font-style: italic;
  text-align: center;
  margin-top: 4px;
}