/* ============================================================
   LinguaQuest — Feature Additions
   Dark/Light mode · Adventure Map · Animations · Results Chart
   ============================================================ */

.add-flashcard-btn {
    margin-top: 10px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
}

.add-flashcard-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.add-flashcard-btn:active {
    transform: translateY(0);
}



/* ── ADVENTURE MAP — BUG FIXES ── */

/* Fix 1: Prevent the courses-container grid override from breaking the map */
#courses-container.has-adventure-map {
  display: block !important;
  grid-template-columns: none !important;
  gap: 0 !important;
  padding: 0 !important;
}

/* Fix 2: Reset text-align forced by screen.active so labels align correctly */
.adventure-map-container,
.adventure-map-container * {
  text-align: left;
}
.map-node-label {
  text-align: center;
}

/* Fix 3: Increase row height to avoid label → next-node collision */
.map-row {
  height: 110px;  /* was 90px — needs room for node (68px) + label (14px) + gap (10px) */
  overflow: visible;
}

/* Fix 4: Ensure nodes layer doesn't clip labels */
.map-nodes-layer {
  overflow: visible;
}

/* Fix 5: adventure-map-container needs defined position context for SVG */
.adventure-map-container {
  position: relative;
  overflow: visible;  /* allow labels to breathe at the bottom */
  padding-bottom: 24px; /* extra space for last row label */
}

/* Fix 6: SVG needs to stretch to actual content height — set via JS */
.map-svg-paths {
  pointer-events: none;
  z-index: 0;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  /* height is set explicitly by JS after layout */
  overflow: visible;
}

/* Fix 7: On desktop, make the map LARGER and more visually impressive */
@media (min-width: 768px) {
  .map-row.left  { padding-left: 25%; }
  .map-row.right { padding-right: 25%; }
  .map-row { height: 160px; }

  .map-node {
    width: 90px;
    height: 90px;
    border-width: 4px;
  }
  .map-node-icon { font-size: 36px; }
  .map-node-label {
    font-size: 13px;
    max-width: 130px;
  }
  .map-node.completed::after { font-size: 20px; top: -12px; right: -10px; }

  .map-path-line { stroke-width: 5; stroke-dasharray: 12 7; }
  .map-path-line.done { stroke-width: 6; }

  .adventure-map-container { padding-bottom: 40px; }
}

/* Extra large screens — even wider zigzag for impact */
@media (min-width: 1200px) {
  .map-row.left  { padding-left: 30%; }
  .map-row.right { padding-right: 30%; }
  .map-row { height: 180px; }

  .map-node { width: 100px; height: 100px; }
  .map-node-icon { font-size: 40px; }
  .map-node-label { font-size: 14px; max-width: 150px; }
}

/* Fix 8: course-select screen — ensure content doesn't center-restrict the map */
#course-select-screen .screen-content {
  padding-left: 0;
  padding-right: 0;
}
#course-select-screen .screen-content > .courses-container {
  width: 100%;
}


.map-node {
  width: 68px; height: 68px;
  border-radius: 50%;
  display: inline-flex; flex-direction: column;
  align-items: center; justify-content: center;
  margin: 0 auto;
  cursor: pointer;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  border: 3px solid transparent;
  background: var(--bg-card);
}

.map-node-icon {
  font-size: 26px;
  line-height: 1;
}

.map-node-label {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 4px;
  max-width: 90px;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Completed node */
.map-node.completed {
  background: linear-gradient(135deg, #58cc02, #46a302);
  border-color: #46a302;
  box-shadow: 0 4px 20px rgba(88,204,2,0.4);
}
.map-node.completed .map-node-icon { filter: none; }
.map-node.completed:hover { transform: scale(1.1); }

/* Star badge on completed */
.map-node.completed::after {
  content: '⭐';
  position: absolute;
  top: -10px; right: -8px;
  font-size: 16px;
  filter: drop-shadow(0 1px 3px rgba(0,0,0,0.4));
}

/* Available (next) node */
.map-node.available {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
  border-color: var(--secondary);
  box-shadow: 0 0 0 0 rgba(28,176,246,0.5);
  animation: mapPulse 2s ease-in-out infinite;
}
.map-node.available:hover { transform: scale(1.12); }

@keyframes mapPulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(28,176,246,0.5); }
  50%      { box-shadow: 0 0 0 10px rgba(28,176,246,0); }
}

/* Locked node */
.map-node.locked {
  background: var(--bg-elevated);
  border-color: var(--border);
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(0.7);
}
.map-node.locked::before {
  content: '🔒';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  font-size: 22px;
  z-index: 2;
}
.map-node.locked .map-node-icon { opacity: 0.3; }

/* Path lines between nodes */
.map-path-line {
  stroke: var(--border);
  stroke-width: 3;
  stroke-dasharray: 8 5;
  fill: none;
  transition: stroke 0.3s;
}
.map-path-line.done {
  stroke: var(--primary);
  stroke-dasharray: none;
  stroke-width: 4;
}

/* Connector dots on map */
.map-connector {
  position: absolute;
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 0 30%;
  top: 85px;
  z-index: 0;
}
.map-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}
.map-dot.done { background: var(--primary); }

/* ── CONFETTI CANVAS ── */
#confetti-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9998;
}

/* ── XP FLOAT ANIMATION ── */
.xp-float {
  position: fixed;
  font-size: 18px;
  font-weight: 900;
  color: #ffd700;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  pointer-events: none;
  z-index: 9997;
  animation: xpRise 1.1s ease-out forwards;
  white-space: nowrap;
}
@keyframes xpRise {
  0%   { opacity: 1; transform: translateY(0) scale(1); }
  60%  { opacity: 1; transform: translateY(-50px) scale(1.2); }
  100% { opacity: 0; transform: translateY(-90px) scale(0.9); }
}

/* ── COMBO DISPLAY ── */
.combo-banner {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%) scale(0);
  background: linear-gradient(135deg, #ff9600, #ff6b00);
  color: var(--text);
  font-size: 28px;
  font-weight: 900;
  padding: 16px 32px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(255,150,0,0.5);
  pointer-events: none;
  z-index: 9000;
  text-align: center;
  letter-spacing: 2px;
  opacity: 0;
}
.combo-banner.show {
  animation: comboPop 1.4s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes comboPop {
  0%   { transform: translate(-50%,-50%) scale(0);   opacity: 0; }
  15%  { transform: translate(-50%,-50%) scale(1.15); opacity: 1; }
  30%  { transform: translate(-50%,-50%) scale(1);    opacity: 1; }
  70%  { transform: translate(-50%,-50%) scale(1);    opacity: 1; }
  100% { transform: translate(-50%,-50%) scale(0.8);  opacity: 0; }
}

/* ── SHAKE ANIMATION ── */
.shake {
  animation: shakeAnim 0.5s cubic-bezier(.36,.07,.19,.97) both;
}
@keyframes shakeAnim {
  0%,100% { transform: translateX(0); }
  10%,50%,90% { transform: translateX(-8px); }
  30%,70% { transform: translateX(8px); }
}

/* ── RESULTS SCREEN ENHANCEMENTS ── */
.results-chart-section {
  width: 100%;
  margin: 20px 0;
  text-align: left;
}

.results-chart-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.results-type-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}

.results-type-label {
  font-size: 12px;
  color: var(--text-secondary);
  width: 110px;
  flex-shrink: 0;
  text-align: right;
}

.results-bar-track {
  flex: 1;
  height: 10px;
  background: var(--border);
  border-radius: 5px;
  overflow: hidden;
}

.results-bar-fill {
  height: 100%;
  border-radius: 5px;
  background: var(--primary);
  transition: width 0.8s cubic-bezier(0.16,1,0.3,1);
}
.results-bar-fill.partial { background: var(--warning); }
.results-bar-fill.empty   { background: var(--danger);  }

.results-bar-pct {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  width: 36px;
  text-align: right;
  flex-shrink: 0;
}

.results-failed-section {
  width: 100%;
  margin: 16px 0 0;
  text-align: left;
}

.results-failed-toggle {
  background: none;
  border: 2px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s;
}
.results-failed-toggle:hover { border-color: var(--secondary); color: var(--secondary); }
.results-failed-toggle .arrow { transition: transform 0.2s; }
.results-failed-toggle.open .arrow { transform: rotate(180deg); }

.results-failed-list {
  display: none;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}
.results-failed-list.visible { display: flex; }

.results-failed-item {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  text-align: left;
  font-size: 13px;
}

.results-failed-q {
  color: var(--text);
  font-weight: 500;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.results-failed-answer {
  color: var(--primary);
  font-size: 12px;
}

.results-previous-compare {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--text-secondary);
}
.results-compare-icon { font-size: 18px; }
.results-compare-text { flex: 1; }
.results-compare-delta { font-weight: 700; }
.results-compare-delta.up   { color: var(--primary); }
.results-compare-delta.down { color: var(--danger);  }
.results-compare-delta.same { color: var(--text-muted); }

/* ── TEACHER DASHBOARD ENHANCEMENTS ── */
.teacher-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 20px;
  overflow-x: auto;
  scrollbar-width: none;
}
.teacher-tabs::-webkit-scrollbar { display: none; }

.teacher-tab {
  flex: 1;
  min-width: 80px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.teacher-tab.active {
  background: var(--primary);
  color: var(--text);
}
.teacher-tab:hover:not(.active) { color: var(--text); background: var(--bg-card); }

.teacher-tab-panel { display: none; }
.teacher-tab-panel.active { display: block; }

.teacher-stat-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: border-color 0.2s;
}
.teacher-stat-card:hover { border-color: var(--primary); }
.teacher-stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.teacher-stat-label {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

#teacher-overview-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
@media (min-width: 600px) {
  #teacher-overview-stats { grid-template-columns: repeat(3, 1fr); }
}

.teacher-section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 16px 0 8px;
}

.teacher-alert-card {
  background: rgba(255,75,75,0.1);
  border: 1px solid rgba(255,75,75,0.3);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 6px;
}

.teacher-student-row {
  display: grid;
  grid-template-columns: 40px 1fr auto auto auto;
  gap: 8px;
  align-items: center;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 6px;
  cursor: pointer;
  transition: border-color 0.2s;
  font-size: 13px;
}
.teacher-student-row:hover { border-color: var(--primary); }
.teacher-student-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.teacher-student-progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}
.teacher-student-progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.6s ease;
}

.teacher-code-box {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  margin-bottom: 20px;
}
.teacher-code-box p { color: var(--text-secondary); font-size: 14px; margin-bottom: 12px; }
.big-code {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: 8px;
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace, sans-serif;
  margin: 12px 0;
  text-shadow: 0 0 20px rgba(88,204,2,0.3);
}

.teacher-assignment-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 6px;
  font-size: 13px;
}

.teacher-comment-section {
  margin: 16px 0;
}
.teacher-comment-section label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  margin-bottom: 6px;
}
.teacher-comment-section textarea {
  width: 100%;
  min-height: 80px;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px;
  font-size: 13px;
  resize: vertical;
  font-family: inherit;
}

#teacher-student-detail { display: none; }

.teacher-assign-form {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.teacher-assign-form label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
}

.teacher-assign-form input,
.teacher-assign-form select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
}

.teacher-devices-info {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}

.teacher-export-btn {
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.teacher-export-btn:hover { border-color: var(--secondary); color: var(--secondary); }

.analytics-section { margin-top: 16px; }
.analytics-section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.analytics-no-data {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  padding: 20px;
}

/* ── ENHANCED XP POPUP ── */
.xp-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  background: linear-gradient(135deg, var(--warning), var(--accent));
  color: var(--text);
  font-size: 22px;
  font-weight: 900;
  padding: 12px 24px;
  border-radius: 50px;
  pointer-events: none;
  z-index: 9001;
  box-shadow: 0 4px 20px rgba(255,150,0,0.4);
  opacity: 0;
}
.xp-popup.show {
  animation: xpPopAnim 1.2s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes xpPopAnim {
  0%   { transform: translate(-50%,-50%) scale(0); opacity: 0; }
  20%  { transform: translate(-50%,-60%) scale(1.1); opacity: 1; }
  60%  { transform: translate(-50%,-70%) scale(1); opacity: 1; }
  100% { transform: translate(-50%,-90%) scale(0.8); opacity: 0; }
}

/* ── STREAK FIRE EFFECT ON HIGH COMBO ── */
.quiz-streak.on-fire {
  animation: streakFire 0.4s ease-in-out infinite alternate;
}
@keyframes streakFire {
  from { color: var(--warning); text-shadow: 0 0 6px var(--warning); }
  to   { color: #ff4500;        text-shadow: 0 0 14px #ff4500; }
}

/* ── CORRECT FLASH ── */
@keyframes correctFlash {
  0%,100% { background: var(--bg); }
  50%      { background: rgba(88,204,2,0.08); }
}
.correct-flash { animation: correctFlash 0.4s ease; }

/* ── WRONG FLASH ── */
@keyframes wrongFlash {
  0%,100% { background: var(--bg); }
  50%      { background: rgba(255,75,75,0.08); }
}
.wrong-flash { animation: wrongFlash 0.4s ease; }

/* ── TEACHER CODE BOX FIXES ── */

/* Override duplicate big-code style from style.css (no glow on placeholder) */
.big-code {
  display: block;
  text-align: center;
  min-height: 60px;
  line-height: 1.2;
  word-break: break-all;
  transition: all 0.3s ease;
}

/* Placeholder state: smaller, muted, no monospace oddness */
.big-code.is-placeholder {
  font-size: 15px !important;
  font-weight: 500 !important;
  letter-spacing: 0.5px !important;
  color: var(--text-muted) !important;
  font-family: inherit !important;
  text-shadow: none !important;
  border-style: dashed !important;
  border-color: var(--border) !important;
  border-radius: var(--radius-sm) !important;
  padding: 18px 16px !important;
  font-style: italic;
  min-height: auto;
}

/* Real code state: big, bold, green, impressive */
.big-code:not(.is-placeholder) {
  font-size: 40px !important;
  letter-spacing: 10px !important;
  color: var(--primary) !important;
  text-shadow: 0 0 24px rgba(88,204,2,0.35) !important;
  border: 1px solid rgba(88,204,2,0.25) !important;
  background: rgba(88,204,2,0.04) !important;
  padding: 16px !important;
  border-radius: var(--radius-sm) !important;
}

/* ── MAP PATH STROKE WIDTH ── */
/* Thinner paths look cleaner on the adventure map */
.map-path-line {
  stroke-width: 3;
}
.map-path-line.done {
  stroke-width: 4;
}

/* ════════════════════════════════════════════════
   VISUAL AUDIT FIX — comprehensive layout fixes
   ════════════════════════════════════════════════ */

/* ── 1. GLOBAL: Override .screen.active forced centering for content-heavy screens ── */
/* The base style.css sets text-align:center !important on .screen.active,
   which cascades into teacher dashboard, results charts, and other left-aligned content. */

#teacher-dashboard-screen.screen.active,
#results-screen.screen.active,
#course-select-screen.screen.active,
#settings-screen.screen.active,
#profile-screen.screen.active,
#achievements-screen.screen.active,
#instructions-screen.screen.active,
#assignments-screen.screen.active,
#analytics-screen.screen.active {
  text-align: center !important; /* keep screen-level centering */
}

/* But inner content wrappers should be left-aligned for readability */
#teacher-dashboard-screen .screen-content,
#results-screen .results-content,
#settings-screen .screen-content,
#instructions-screen .screen-content {
  text-align: left;
}

/* ── 2. RESULTS SCREEN: wider content area + properly sized buttons ── */
#results-screen .results-content {
  max-width: 600px !important;
  width: 100%;
  margin: 0 auto;
}

/* Center the results header (icon, title, subtitle) */
.results-header {
  text-align: center;
  margin-bottom: 24px;
  animation: bounceIn 0.5s ease;
}
.results-header .results-icon {
  font-size: 64px;
  margin-bottom: 12px;
  animation: float 3s ease-in-out infinite;
}

/* Results stat cards: keep centered */
.results-stats {
  text-align: center;
}

/* Results buttons: full-width stack on mobile, row on desktop */
.results-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}
.results-buttons .results-btn {
  max-width: none !important;
  width: 100%;
  text-align: center;
}

@media (min-width: 500px) {
  .results-buttons {
    flex-direction: row;
    justify-content: center;
  }
  .results-buttons .results-btn {
    flex: 1;
    max-width: 220px !important;
  }
}

/* ── 3. TEACHER DASHBOARD: left-aligned content ── */
#teacher-dashboard-screen .screen-content {
  text-align: left;
  max-width: 900px !important;
  padding: 20px !important;
}

/* Teacher code-box: keep centered */
.teacher-code-box {
  text-align: center;
}

/* Teacher form inputs shouldn't be text-align:center */
.teacher-assign-form,
.teacher-assign-form label,
.teacher-assign-form input,
.teacher-assign-form select {
  text-align: left;
}

/* Teacher tabs should wrap nicely */
.teacher-tabs {
  justify-content: center;
}

/* ── 4. ADVENTURE MAP: override desktop grid + padding overrides ── */
/* The desktop media query forces .courses-container into grid — this override is critical */
@media (min-width: 768px) {
  #courses-container.has-adventure-map {
    display: block !important;
    grid-template-columns: none !important;
    gap: 0 !important;
  }

  #course-select-screen .screen-content {
    padding: 16px !important;
    max-width: 100% !important;
  }
}

/* ── 5. BACK-BTN-FLOAT: ensure it displays and center its content ── */
.back-btn-float { color: #0a2e5c !important; background: #ffffff !important; border: 1px solid #d1e9ff !important; 
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
  transition: all 0.2s;
}
.back-btn-float:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: scale(1.1);
}



/* ── 7. ROLE SELECTION CENTERING ── */
#role-selection-screen.screen.active {
  justify-content: center !important;
}
#role-selection-screen .activation-content {
  text-align: center;
  align-items: center;
}

/* ── 8. TEACHER & STUDENT AUTH: centering fix ── */
#teacher-auth-screen.screen.active,
#student-auth-screen.screen.active {
  justify-content: center !important;
}
#teacher-auth-screen .activation-content,
#student-auth-screen .activation-content {
  text-align: center;
  position: relative;
}

/* ── 9. QUIZ SCREEN: ensure options center and don't collide ── */
.quiz-content {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

/* ── 10. RESULTS: chart and failed sections should be left-aligned ── */
.results-chart-section,
.results-failed-section {
  text-align: left;
}

/* ── 11. HOME SCREEN: ensure home-content centers on desktop ── */
#home-screen .home-content {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

/* ── 12. PROFILE: center stats but left-align achievements ── */
.profile-stats-grid {
  text-align: center;
}
.profile-recent-achievements {
  text-align: left;
}

/* ── 13. SETTINGS: left-align all form elements ── */
#settings-screen .settings-group {
  text-align: left;
}
#settings-screen .settings-group h3 {
  text-align: left;
}

/* ── 14. TOAST: ensure toast isn't clipped ── */
.toast {
  max-width: calc(100vw - 40px);
}

/* ── 15. RESULTS COMPARE: centered ── */
.results-previous-compare {
  text-align: left;
}

/* ── 16. MATCHING ITEMS: ensure they center within quiz ── */
.quiz-matching-container {
  max-width: 600px;
  margin: 20px auto 0;
}

/* ── 17. MENU BUTTONS (Home & Options): Prevent text overflow and keep layout clean ── */
.menu-btn-text, .option-text {
  overflow: hidden;
  text-overflow: ellipsis;
}
.btn-title, .btn-desc {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

/* ── 18. ROLE SELECTION CARDS: Make sure they have a nice max-width and center properly ── */
.role-cards-container {
  align-items: center;
}
.role-card {
  width: 100%;
  max-width: 320px;
}

/* ── 19. ACTIVATION BUTTONS: Ensure they are fully visible and don't overflow ── */
.activation-btn, .settings-save-btn, .settings-danger-btn, .name-confirm-btn {
  white-space: normal; /* Let the text wrap naturally if needed */
  height: auto;
  min-height: 50px;
  line-height: 1.2;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── 20. LEVEL INFO: Fix text clipping on level cards ── */
.level-info {
  min-width: 0; /* allows flex children to shrink below their implied minimum size */
}
.level-name, .level-description {
  white-space: normal;
  display: -webkit-box;
  -webkit-line-clamp: 2; /* max 2 lines */
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── 21. BACK BTN: Ensure standard back btn fits well ── */
.back-btn { color: #0a2e5c !important; border-color: #0a2e5c !important; 
  flex-shrink: 0;
}

/* ── 22. SETTINGS SCREEN: Fix toggle switch alignment ── */
.toggle-setting {
  padding-top: 8px;
  padding-bottom: 8px;
}

/* ── 23. QUIZ HEADER: Fix progress bar layout ── */
.quiz-header {
  gap: 15px; /* give exact, predictable gap */
}
.quiz-progress-bar-container {
  min-width: 100px;
}

/* ── 24. AVOID COLLISIONS WITH FLOATING BUTTONS ── */
/* The dark mode toggle and back-float can cover content at the bottom/top.
   Add padding to the scrolling wrappers so users can scroll past the buttons. */
.screen-content {
  padding-bottom: 80px !important;
}

/* ── 25. SCORE CIRCLE ALIGNMENT ── */
.results-score-circle {
  align-items: center;
}
.score-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ── 26. RESULTS FAILED SECTION: Fix visibility & layout ── */
.results-failed-toggle {
  margin-top: 10px;
  text-align: left; /* Keep left aligned */
}
.results-failed-list {
  text-align: left;
}

/* ── 27. MODAL OVERLAY: Ensure modals are absolutely centered ── */
.modal-overlay, .name-modal-content, .levelup-overlay {
  display: none;
  justify-content: center !important;
  align-items: center !important;
}
.modal-overlay.show, .levelup-overlay.show {
  display: flex !important;
}
.modal-content, .levelup-content {
  margin: auto; /* Fallback centering */
  position: relative;
}

/* ── 28. FIX THE "INSTRUCTIONS" BULLETS LAYOUT ── */
.instruction-card {
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* ── 29. THEORY SECTION: Fix padding and alignment ── */
#theory-list-container {
  text-align: left;
}
.theory-article {
  text-align: left;
}

/* ── 30. ASSIGNMENTS SCREEN: Fix missing list alignment ── */
#assignments-screen .screen-content {
  text-align: left;
}

/* ── 31. FIX COURSE CARDS ON MOBILE (PREVENT COLLISIONS) ── */
.course-card {
  flex-wrap: nowrap;
}
@media (max-width: 480px) {
  .course-card {
    padding: 14px 12px;
    gap: 10px;
  }
  .course-icon {
    width: 40px;
    height: 40px;
    font-size: 24px;
  }
}

/* ── 32. FIX QUIZ OPTIONS (Ensure they always fit) ── */
.option-btn {
  word-break: break-word; /* Allows long words to break rather than overflow */
  white-space: normal;
}
.option-text {
  text-overflow: clip; /* We want the text to wrap, not clip */
  overflow: visible;
  line-height: 1.3;
}

/* ── 33. ADVENTURE MAP OVERALL CENTERING ── */
#levels-container {
  display: flex !important;
  flex-direction: column;
  align-items: center; 
  width: 100%;
}

.adventure-map-container {
  margin: 0 auto; /* Ensures the SVG wrapper is centered horizontally */
  display: flex;
  justify-content: center;
}

/* ── 34. TEACHER DASHBOARD CODE GENERATOR FIX ── */
.teacher-code-box .activation-btn { color: #ffffff !important; 
  max-width: 250px; /* Prevent the button from being too wide */
  margin: 10px auto; /* Centers the button horizontally */
  height: auto;
  min-height: 40px; 
  padding: 10px 16px; /* Reduced padding from 14px to make it smaller inside */
  font-size: 14px; /* Reduced from 16px */
}

/* Make sure the main layout wrapper has max-width and centering */
.teacher-code-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── 35. TEACHER DASHBOARD CODE ROUNDUP ── */
/* Make the code generator box smaller and perfectly centered */
.teacher-code-box {
  max-width: 500px;
  margin: 0 auto 24px auto !important; /* Center the box and add bottom margin */
  width: 100%;
}

/* Ensure the big code display is appropriately sized */
.big-code {
  max-width: 300px;
  margin: 15px auto !important;
  font-size: 28px !important; /* Slightly smaller font to fit nicely */
}

/* ── 36. TEACHER DASHBOARD: hide CSV and limit wrapper size ── */
.teacher-export-btn {
  display: none !important;
}

/* Reducimos aún más el borde oscuro del generador de código para que no se vea tan estirado y "tape" las cosas de debajo */
.teacher-code-box {
  max-width: 450px !important;
  padding: 12px 16px !important;
  margin-top: 10px !important;
}

/* El número de dispositivos que ocupa espacio innecesario */
.teacher-devices-info {
  margin-top: 8px;
  font-size: 13px;
}

/* ── 37. TEACHER TABS SCROLL FIX ── */
/* Prevent the tabs from causing horizontal overflow which triggers a slide bar.
   Force them to wrap nicely and prevent them from escaping their container. */
.teacher-tabs {
  display: flex;
  flex-wrap: wrap; /* Allows buttons to go to next line instead of overflowing */
  justify-content: center;
  gap: 8px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden; /* Prevent horizontal scrollbar on the tabs container itself */
}

/* Ensure the screen content wrapper doesn't push width beyond maximum */
#teacher-dashboard-screen .screen-content {
  overflow-x: hidden;
  width: 100%;
}

/* ── 38. FIX NAME MODAL VISIBILITY ── */
/* In rule 27 I accidentally hid the .name-modal-content */
.name-modal-content {
  display: block !important;
}
/* ══════════════════════════════════════════
   QUIZ BUILDER STYLES
══════════════════════════════════════════ */

/* ── List view ── */
.qb-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.qb-list-desc { color: var(--text-muted); font-size: 13px; }

.qb-quiz-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  transition: border-color .18s;
}
.qb-quiz-card:hover { border-color: var(--primary); }
.qb-quiz-card-body  { flex: 1; min-width: 0; }
.qb-quiz-title      { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 5px; }
.qb-quiz-meta       { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 12px; color: var(--text-muted); }
.qb-quiz-card-actions { display: flex; gap: 6px; flex-shrink: 0; }

.qb-badge         { padding: 2px 8px; border-radius: 99px; font-size: 11px; font-weight: 600; background: var(--bg-elevated); color: var(--text-muted); }
.qb-badge-blue    { background: rgba(28,176,246,0.12); color: var(--secondary); }
.qb-badge-green   { background: rgba(88,204,2,0.12);  color: var(--primary); }
.qb-badge-gray    { background: var(--bg-elevated);   color: var(--text-muted); opacity:.7; }

.qb-empty { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.qb-empty-icon { font-size: 48px; margin-bottom: 12px; }
.qb-empty p    { font-size: 14px; margin-bottom: 4px; }

/* ── Editor top bar ── */
.qb-editor-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.qb-publish-toggle {
  display: flex; align-items: center; gap: 6px;
  font-size: 12.5px; color: var(--text-secondary);
  cursor: pointer; user-select: none;
}
.qb-publish-toggle input { accent-color: var(--primary); width: 16px; height: 16px; }

/* ── Meta card ── */
.qb-meta-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.qb-meta-row { display: flex; gap: 12px; }
@media (max-width: 480px) { .qb-meta-row { flex-direction: column; } }

/* ── Generic form pieces ── */
.qb-field  { display: flex; flex-direction: column; gap: 6px; }
.qb-label  { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.qb-hint-text { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.qb-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13.5px;
  font-family: inherit;
  outline: none;
  transition: border-color .18s, box-shadow .18s;
}
.qb-input:focus  { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(88,204,2,.12); }
.qb-input-lg     { font-size: 15px; font-weight: 600; padding: 12px 14px; }

.qb-textarea {
  width: 100%;
  min-height: 100px;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  resize: vertical;
  line-height: 1.6;
}
.qb-textarea:focus { border-color: var(--primary); }

/* ── Question type grid ── */
.qb-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 4px;
}
@media (max-width: 480px) { .qb-type-grid { grid-template-columns: repeat(2, 1fr); } }

.qb-type-btn {
  padding: 8px 6px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  text-align: center;
  font-family: inherit;
}
.qb-type-btn:hover  { border-color: var(--primary); color: var(--primary); background: rgba(88,204,2,.06); }
.qb-type-btn.active { border-color: var(--primary); color: var(--primary); background: rgba(88,204,2,.1); font-weight: 600; }

/* ── Question editor panel ── */
.qb-editor-panel {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  margin: 14px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.qb-editor-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2px;
}
.qb-editor-panel-title { font-size: 14px; font-weight: 700; color: var(--text); }

.qb-editor-panel-footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

/* ── Option rows (MC) ── */
.qb-option-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.qb-option-row input[type="radio"] { flex-shrink: 0; accent-color: var(--primary); width: 16px; height: 16px; cursor: pointer; }
.qb-option-letter  { width: 20px; flex-shrink: 0; font-weight: 700; color: var(--text-muted); font-size: 12px; }
.qb-option-row .qb-input { flex: 1; }

/* ── Answer rows (Write) ── */
.qb-answer-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.qb-answer-row .qb-input { flex: 1; }

/* ── Pair rows (Matching) ── */
.qb-pair-row  { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.qb-pair-row .qb-input { flex: 1; }
.qb-arrow     { color: var(--text-muted); font-size: 16px; flex-shrink: 0; }

/* ── Sub-question blocks (Reading) ── */
.qb-subq-block {
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 10px;
}
.qb-subq-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.qb-subq-block .qb-input { margin-bottom: 6px; }

/* ── Questions list rows ── */
.qb-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.qb-section-title { font-size: 13px; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .8px; }

.qb-question-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 6px;
  transition: border-color .15s;
}
.qb-question-row:hover { border-color: var(--primary); }
.qb-question-row.active { border-color: var(--primary); background: rgba(88,204,2,.04); }
.qb-question-row-left {
  display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0;
}
.qb-q-num          { font-size: 11px; font-weight: 700; color: var(--text-muted); width: 18px; text-align: center; flex-shrink: 0; }
.qb-q-type-badge   { font-size: 16px; flex-shrink: 0; }
.qb-q-preview      { font-size: 13px; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qb-question-row-actions { display: flex; gap: 4px; flex-shrink: 0; }

.qb-no-questions {
  text-align: center; padding: 24px;
  color: var(--text-muted); font-size: 13px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
}

/* ── Play section ── */
.qb-play-sec/* Roleplay Styles */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding: 10px;
}

.scenario-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 2px solid var(--border);
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.scenario-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.scenario-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
}

.scenario-icon {
    font-size: 40px;
    margin-bottom: 10px;
}

.scenario-info h3 {
    margin: 0 0 8px 0;
    color: var(--text);
}

.scenario-info p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 15px;
}

.scenario-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 11px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    padding-top: 10px;
}

/* Mission Complete Modal */
.mission-complete-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease;
}

.mission-card {
    background: var(--bg-card);
    width: 100%;
    max-width: 400px;
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    border: 2px solid var(--accent);
    animation: slideUp 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.mission-confetti { font-size: 60px; margin-bottom: 10px; }
.mission-scenario { color: var(--accent); font-weight: 700; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; font-size: 12px; }
.mission-rewards { display: flex; justify-content: center; gap: 20px; margin-bottom: 25px; }
.reward-item { background: var(--bg-elevated); padding: 10px 15px; border-radius: var(--radius-sm); font-weight: 700; border: 2px solid var(--border); }
.mission-feedback { background: var(--bg-elevated); padding: 15px; border-radius: var(--radius-sm); text-align: left; margin-bottom: 25px; border-left: 4px solid var(--accent); }
.mission-feedback strong { display: block; margin-bottom: 5px; color: var(--text); font-size: 14px; }
.mission-feedback p { font-size: 13px; color: var(--text-muted); margin: 0; font-style: italic; }

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.msg-speak-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    margin-left: 8px;
    opacity: 0.6;
    transition: opacity 0.2s;
    vertical-align: middle;
    padding: 2px 5px;
    border-radius: 4px;
}

.msg-speak-btn:hover {
    opacity: 1;
    background: rgba(0,0,0,0.05);
}

.shio-bubble-bot { position: relative; }
  padding-top: 16px;
  border-top: 1px solid var(--border);
}


/* ════════════════════════════════════════════════
   PREMIUM UI OVERHAUL — BUTTONS & INPUTS
   ════════════════════════════════════════════════ */

/* ── 1. Global Button Resets ── */
button {
  border: none;
  outline: none;
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
}

/* ── 2. The QB Button System (Premium Upgrade) ── */
.qb-btn {
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: none;
  box-shadow: 0 4px 0 rgba(0,0,0,0.1);
}

.qb-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 6px 15px rgba(0,0,0,0.1);
}

.qb-btn:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.1);
}

.qb-btn-primary {
  background: linear-gradient(135deg, var(--primary), #00d4ff);
  color: white !important;
}

.qb-btn-secondary {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
  color: white !important;
}

.qb-btn-danger {
  background: linear-gradient(135deg, var(--danger), #ff6b6b);
  color: white !important;
}

.qb-btn-ghost {
  background: white;
  border: 2px solid var(--border);
  color: var(--primary);
  box-shadow: none;
}

.qb-btn-ghost:hover {
  border-color: var(--primary);
  background: var(--bg-card);
}

.qb-btn-sm {
  padding: 6px 14px;
  font-size: 12px;
  border-radius: 10px;
}

.qb-btn-play {
  background: linear-gradient(135deg, #1cb0f6, #00d4ff);
  color: white !important;
  padding: 15px 35px;
  font-size: 16px;
  border-radius: var(--radius);
  box-shadow: 0 8px 25px rgba(28, 176, 246, 0.4);
}

.qb-icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: white;
  border: 2px solid var(--border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.qb-icon-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: scale(1.1);
}

/* ── 3. Role Cards & Activation (Premium) ── */
.role-card {
  border: 2px solid var(--border) !important;
  border-radius: var(--radius) !important;
  background: white !important;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
  box-shadow: 0 8px 20px rgba(0,0,0,0.05) !important;
}

.role-card:hover {
  border-color: var(--primary) !important;
  transform: translateY(-8px) scale(1.02) !important;
  box-shadow: 0 15px 30px rgba(0, 180, 255, 0.2) !important;
}

.activation-btn {
  background: linear-gradient(135deg, #1a365d, #0a2e5c) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: 0 6px 0 #05162b !important;
  transition: all 0.1s !important;
}

.activation-btn:active {
  transform: translateY(4px) !important;
  box-shadow: 0 2px 0 #05162b !important;
}

/* ── 4. Type Buttons (Quiz Builder) ── */
.qb-type-btn {
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  background: white;
  font-weight: 700;
  transition: all 0.2s;
  font-size: 13px;
}

.qb-type-btn.active {
  border-color: var(--primary);
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 180, 255, 0.15);
}

/* ── 5. Question Rows ── */
.qb-question-row {
  background: white !important;
  border: 2px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
  padding: 12px 18px !important;
  box-shadow: 0 4px 10px rgba(0,0,0,0.02) !important;
}

.qb-question-row:hover {
  border-color: var(--primary) !important;
  transform: translateX(5px);
}

/* ── AUTHENTICATION ENHANCEMENTS ── */
.google-login-btn {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  background: white;
  color: #3c4043;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  margin-top: 10px;
}
.google-login-btn:hover {
  background: #f8f9fa;
  border-color: var(--primary);
  box-shadow: 0 6px 15px rgba(0, 180, 255, 0.15);
  transform: translateY(-2px);
}
.google-login-btn img {
  width: 20px;
  height: 20px;
}

.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 15px 0;
  color: var(--text-muted);
  font-size: 13px;
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border);
}
.auth-divider::before { margin-right: .5em; }
.auth-divider::after { margin-left: .5em; }

/* ══════════════════════════════════════════
   A1 — BOTTOM NAVIGATION BAR (Duolingo-style)
   ══════════════════════════════════════════ */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999 !important;
  transform: translateZ(9999px); /* Force stay on top of 3D cards */
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: 64px;
  background: #0b0e14 !important;
  backdrop-filter: none !important;
  border-top: 2px solid var(--blue) !important;
  padding: 0 8px;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.bnav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  flex: 1;
  height: 100%;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.2s, transform 0.15s;
  position: relative;
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
}

.bnav-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 40px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.bnav-item.active::before {
  transform: translateX(-50%) scaleX(1);
}

.bnav-item.active {
  color: var(--primary);
}

.bnav-item:active {
  transform: scale(0.9);
}

.bnav-icon {
  width: 22px;
  height: 22px;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.2s;
}

.bnav-item.active .bnav-icon {
  transform: scale(1.12);
  filter: drop-shadow(0 0 6px rgba(88,204,2,0.4));
}

.bnav-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2px;
  line-height: 1;
}

/* Offset content to avoid bottom nav overlap */
.screen-content,
.home-content {
  padding-bottom: 90px !important;
}

@media (max-width: 480px) {
  .bottom-nav { height: 58px; }
  .bnav-icon { width: 20px; height: 20px; }
  .bnav-label { font-size: 9px; }
}

/* ══════════════════════════════════════════
   A1 — HOME SECONDARY GRID
   ══════════════════════════════════════════ */
.home-secondary-grid {
  display: flex !important;
  flex-wrap: wrap;
  width: 100% !important;
  gap: 10px !important;
  margin-top: 2px;
  justify-content: space-between !important;
  align-items: stretch !important;
}

.menu-btn.compact {
  flex: 1 1 0 !important;
  width: auto !important;
  min-width: 0 !important;
  max-width: none !important;
  padding: 14px 14px;
  gap: 10px;
  justify-content: center !important;
  align-items: center !important;
  text-align: center !important;
  flex-direction: column !important;
}

.menu-btn.compact .menu-btn-icon {
  font-size: 24px;
  width: auto;
  margin: 0 auto;
}

.menu-btn.compact .menu-btn-text {
  align-items: center;
  text-align: center;
  width: 100%;
}

.menu-btn.compact .btn-title {
  font-size: clamp(10px, 1.2vw, 13px);
  word-break: break-word;
  white-space: normal;
  line-height: 1.2;
}

@media (min-width: 768px) {
  .home-secondary-grid {
    flex-wrap: wrap !important;
  }
}

/* ══════════════════════════════════════════
   A2 — SCREEN TRANSITIONS
   ══════════════════════════════════════════ */
.screen.active {
  animation: screenSlideIn 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards !important;
}

@keyframes screenSlideIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ══════════════════════════════════════════
   A3 — SKELETON LOADERS
   ══════════════════════════════════════════ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-card, rgba(22,27,34,0.7)) 25%,
    rgba(255,255,255,0.06) 50%,
    var(--bg-card, rgba(22,27,34,0.7)) 75%
  );
  background-size: 200% 100%;
  animation: skeletonShimmer 1.6s ease-in-out infinite;
  border-radius: var(--radius-xs, 8px);
}

@keyframes skeletonShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 14px;
  margin-bottom: 10px;
  width: 85%;
}

.skeleton-text-short {
  height: 14px;
  margin-bottom: 10px;
  width: 55%;
}

.skeleton-title {
  height: 22px;
  margin-bottom: 14px;
  width: 60%;
}

.skeleton-card {
  height: 72px;
  margin-bottom: 10px;
  border-radius: var(--radius-sm, 12px);
}

.skeleton-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  flex-shrink: 0;
}

.skeleton-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm, 12px);
  margin-bottom: 10px;
}

.skeleton-row-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ══════════════════════════════════════════
   A4 — DESIGN TOKENS (reference)
   ══════════════════════════════════════════
   All CSS files use these shared tokens from :root in style.css:
   
   Colors:     --primary, --secondary, --accent, --danger, --success, --warning, --purple
   Surfaces:   --bg, --bg-card, --bg-card-hover, --bg-elevated
   Text:       --text, --text-secondary, --text-muted
   Borders:    --border, --border-light
   Radii:      --radius, --radius-sm, --radius-xs
   Shadows:    --shadow, --shadow-premium
   Typography: --font
   FX:         --transition, --glass
   ══════════════════════════════════════════ */

/* --- RACHAS DE FUEGO VISUALES --- */
.streak-hot {
  color: var(--warning) !important;
  text-shadow: 0 0 10px rgba(255, 165, 0, 0.8) !important;
  animation: pulse-hot 1.5s infinite alternate;
}
.streak-blazing {
  color: #ff4500 !important;
  text-shadow: 0 0 15px rgba(255, 69, 0, 1), 0 0 5px rgba(255, 215, 0, 0.5) !important;
  animation: pulse-blazing 1s infinite alternate;
}
.streak-fire {
  color: #ff0000 !important;
  text-shadow: 0 0 20px #ff0000, 0 0 10px #ff8c00, 0 0 5px #ffff00 !important;
  animation: pulse-fire 0.5s infinite alternate;
}
@keyframes pulse-hot {
  from { transform: scale(1); filter: drop-shadow(0 0 2px var(--warning)); }
  to { transform: scale(1.1); filter: drop-shadow(0 0 8px var(--warning)); }
}
@keyframes pulse-blazing {
  from { transform: scale(1) translateY(0); filter: drop-shadow(0 0 5px #ff4500); }
  to { transform: scale(1.15) translateY(-2px); filter: drop-shadow(0 0 12px #ff4500); }
}
@keyframes pulse-fire {
  0% { transform: scale(1) translateY(0) rotate(-2deg); filter: drop-shadow(0 0 10px #ff0000); }
  50% { transform: scale(1.2) translateY(-4px) rotate(2deg); filter: drop-shadow(0 0 20px #ff8c00); }
  100% { transform: scale(1) translateY(0) rotate(-2deg); filter: drop-shadow(0 0 10px #ff0000); }
}

#fire-canvas-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
  overflow: hidden;
}

/* Roleplay Input Styling when disabled */
#roleplay-input:disabled {
    background: rgba(255, 255, 255, 0.05);
    cursor: not-allowed;
    opacity: 0.7;
    border-color: var(--primary-color);
}

/* Three dots animation during typing */
.typing-dots {
    display: flex;
    gap: 4px;
    padding: 10px;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.typing-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

/* ── THEORY FLOATING AUDIO BUTTON ── */
.floating-fab {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  cursor: pointer;
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.floating-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

.floating-fab.playing {
  background: var(--danger);
  animation: fabPulse 2s infinite;
}

@keyframes fabPulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 75, 75, 0.4); }
  70% { box-shadow: 0 0 0 15px rgba(255, 75, 75, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 75, 75, 0); }
}

.fab-icon {
  font-size: 24px;
}


/* ═══ Stories Cinematic Module — Compact & Decorative ═══ */
#story-adventure-screen {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%); /* Decorative light gradient */
    overflow: hidden;
}

.story-content-area {
    background: transparent;
    padding: 15px;
    height: calc(100vh - 70px);
    display: flex;
    flex-direction: column;
    gap: 15px;
    overflow-y: auto;
}

.story-narrative {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    padding: 20px;
    font-size: 1.05rem;
    line-height: 1.6;
    color: #1e293b;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
    flex-shrink: 0; /* Don't let it grow too much */
}

.narrative-block p {
    margin-bottom: 12px;
}

.story-choices {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
}

@media (max-width: 600px) {
    .story-choices {
        grid-template-columns: 1fr;
    }
    .story-narrative {
        font-size: 0.95rem;
        padding: 15px;
    }
}

.choice-btn {
    background: white;
    border: 1px solid #e2e8f0;
    color: #334155;
    padding: 12px 15px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.choice-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88,204,2,0.2);
}

.choice-num {
    background: #f1f5f9;
    color: var(--primary);
    width: 24px;
    height: 24px;
    font-size: 0.8rem;
}


.story-loading {
    text-align: center;
    color: #3b82f6;
    padding: 20px;
}

.story-ending-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(15px);
    padding: 40px;
    border-radius: 30px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.5);
    margin: 40px auto;
    max-width: 500px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.story-ending-card h3 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
    font-weight: 900;
}

.story-ending-card p {
    color: #475569;
    margin-bottom: 30px;
}

.return-stories-btn {
    background: linear-gradient(135deg, var(--primary), #46a302);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 800;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(88,204,2,0.3);
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.return-stories-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 30px rgba(88,204,2,0.4);
}

@keyframes popIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}


@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}