/* =============================================
   ENGLISH UP! — missions.css
   Tab Missions + motor de juego
============================================= */

/* ═══════════════════════════════════════════
   MISSIONS LIST (student view)
═══════════════════════════════════════════ */
.missions-header {
  margin-bottom: var(--sp-6);
}

.missions-title {
  font-family:  var(--font-display);
  font-size:    var(--text-2xl);
  font-weight:  var(--weight-bold);
  margin-bottom:var(--sp-1);
}

.missions-subtitle {
  font-size: var(--text-sm);
  color:     var(--color-text-muted);
}

/* ── Mission cards grid ──────────────────── */
.missions-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap:                   var(--sp-4);
}

.mission-card {
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding:       var(--sp-5);
  display:       flex;
  flex-direction:column;
  gap:           var(--sp-3);
  box-shadow:    var(--shadow-sm);
  cursor:        pointer;
  transition:    transform   var(--duration-normal) var(--ease-spring),
                 box-shadow  var(--duration-normal) var(--ease-default),
                 border-color var(--duration-normal) var(--ease-default);
  animation:     fadeUp var(--duration-slow) var(--ease-spring) both;
}

.mission-card:hover {
  transform:    translateY(-3px);
  box-shadow:   var(--shadow-lg);
  border-color: var(--brand-300);
}

.mission-card.completed {
  border-color: #bbf7d0;
  background:   #f0fdf4;
}

.mission-card.completed:hover {
  border-color: var(--green-500);
}

/* stagger */
.mission-card:nth-child(1) { animation-delay: 40ms; }
.mission-card:nth-child(2) { animation-delay: 80ms; }
.mission-card:nth-child(3) { animation-delay: 120ms; }
.mission-card:nth-child(4) { animation-delay: 160ms; }

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

.mc-top {
  display:     flex;
  align-items: flex-start;
  gap:         var(--sp-3);
}

.mc-icon {
  width:         48px;
  height:        48px;
  border-radius: var(--radius-lg);
  background:    var(--brand-100);
  display:       flex;
  align-items:   center;
  justify-content:center;
  font-size:     var(--text-xl);
  flex-shrink:   0;
}

.mission-card.completed .mc-icon {
  background: #dcfce7;
}

.mc-info { flex: 1; min-width: 0; }

.mc-title {
  font-size:     var(--text-sm);
  font-weight:   var(--weight-extrabold);
  margin-bottom: var(--sp-1);
  white-space:   nowrap;
  overflow:      hidden;
  text-overflow: ellipsis;
}

.mc-desc {
  font-size: var(--text-xs);
  color:     var(--color-text-muted);
  display:   -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow:  hidden;
}

.mc-badges {
  display:   flex;
  gap:       var(--sp-2);
  flex-wrap: wrap;
}

.mc-badge {
  display:       flex;
  align-items:   center;
  gap:           var(--sp-1);
  padding:       2px var(--sp-2);
  border-radius: var(--radius-full);
  font-size:     var(--text-xs);
  font-weight:   var(--weight-bold);
}

.mc-badge-type   { background: var(--teal-100);  color: var(--teal-700); }
.mc-badge-xp     { background: var(--brand-100); color: var(--brand-700); }
.mc-badge-time   { background: #ede9fe; color: #6d28d9; }
.mc-badge-done   { background: #dcfce7; color: var(--green-600); }

.mc-score-bar-track {
  height:        6px;
  background:    var(--neutral-150);
  border-radius: var(--radius-full);
  overflow:      hidden;
}

.mc-score-bar-fill {
  height:        100%;
  background:    var(--color-secondary);
  border-radius: var(--radius-full);
  transition:    width 0.6s var(--ease-out);
}

.mc-score-label {
  font-size:   var(--text-xs);
  font-weight: var(--weight-bold);
  color:       var(--color-text-muted);
  text-align:  right;
}


/* ═══════════════════════════════════════════
   MISSION ENGINE (game view)
═══════════════════════════════════════════ */
.mission-game {
  display:        flex;
  flex-direction: column;
  gap:            var(--sp-5);
  max-width:      680px;
  margin:         0 auto;
  animation:      fadeUp var(--duration-slow) var(--ease-spring);
}

/* ── Game header ─────────────────────────── */
.game-header {
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  padding:       var(--sp-5) var(--sp-6);
  display:       flex;
  align-items:   center;
  gap:           var(--sp-4);
  box-shadow:    var(--shadow-sm);
}

.game-emoji {
  font-size:  var(--text-3xl);
  line-height:1;
  flex-shrink:0;
}

.game-meta { flex: 1; min-width: 0; }

.game-title {
  font-family:   var(--font-display);
  font-size:     var(--text-xl);
  font-weight:   var(--weight-bold);
  margin-bottom: var(--sp-1);
}

.game-progress-row {
  display:     flex;
  align-items: center;
  gap:         var(--sp-3);
}

.game-progress-track {
  flex:          1;
  height:        8px;
  background:    var(--neutral-150);
  border-radius: var(--radius-full);
  overflow:      hidden;
}

.game-progress-fill {
  height:        100%;
  background:    var(--brand-500);
  border-radius: var(--radius-full);
  transition:    width 0.4s var(--ease-out);
}

.game-progress-label {
  font-size:   var(--text-xs);
  font-weight: var(--weight-extrabold);
  color:       var(--color-text-muted);
  flex-shrink: 0;
}

/* Timer */
.game-timer {
  display:       flex;
  align-items:   center;
  gap:           var(--sp-1);
  padding:       var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  background:    var(--neutral-100);
  font-size:     var(--text-sm);
  font-weight:   var(--weight-extrabold);
  color:         var(--color-text-muted);
  flex-shrink:   0;
  transition:    background var(--duration-normal) var(--ease-default),
                 color      var(--duration-normal) var(--ease-default);
}

.game-timer.warning { background: var(--brand-100); color: var(--brand-700); }
.game-timer.danger  { background: #ffe4e6; color: var(--color-danger);
                      animation: timerPulse 0.6s ease-in-out infinite; }

@keyframes timerPulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.05); }
}

/* ── Question card ───────────────────────── */
.question-card {
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  padding:       var(--sp-6);
  box-shadow:    var(--shadow-sm);
  animation:     questionIn var(--duration-normal) var(--ease-spring);
}

@keyframes questionIn {
  from { opacity: 0; transform: translateX(12px); }
  to   { opacity: 1; transform: translateX(0); }
}

.question-type-label {
  font-size:     var(--text-xs);
  font-weight:   var(--weight-extrabold);
  text-transform:uppercase;
  letter-spacing:0.06em;
  color:         var(--color-text-muted);
  margin-bottom: var(--sp-3);
}

.question-text {
  font-size:     var(--text-md);
  font-weight:   var(--weight-bold);
  line-height:   var(--leading-snug);
  margin-bottom: var(--sp-5);
}

/* ── Multiple choice ─────────────────────── */
.mc-options {
  display:        flex;
  flex-direction: column;
  gap:            var(--sp-3);
}

.mc-option {
  display:       flex;
  align-items:   center;
  gap:           var(--sp-4);
  padding:       var(--sp-4) var(--sp-5);
  border:        1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor:        pointer;
  transition:    background var(--duration-fast) var(--ease-default),
                 border-color var(--duration-fast) var(--ease-default),
                 transform    var(--duration-fast) var(--ease-spring);
  text-align:    left;
  font-size:     var(--text-sm);
  font-weight:   var(--weight-semibold);
}

.mc-option:hover:not(:disabled) {
  background:   var(--brand-50);
  border-color: var(--brand-300);
  transform:    translateX(3px);
}

.mc-option.selected {
  background:   var(--brand-50);
  border-color: var(--brand-400);
}

.mc-option.correct {
  background:   #dcfce7;
  border-color: var(--green-500);
  color:        var(--green-600);
}

.mc-option.wrong {
  background:   #ffe4e6;
  border-color: var(--color-danger);
  color:        #be123c;
}

.mc-option:disabled { cursor: default; transform: none; }

.mc-option-letter {
  width:         28px;
  height:        28px;
  border-radius: var(--radius-full);
  background:    var(--neutral-150);
  display:       flex;
  align-items:   center;
  justify-content:center;
  font-size:     var(--text-xs);
  font-weight:   var(--weight-black);
  flex-shrink:   0;
  transition:    background var(--duration-fast) var(--ease-default);
}

.mc-option.selected .mc-option-letter { background: var(--brand-300); }
.mc-option.correct  .mc-option-letter { background: var(--green-400); color: white; }
.mc-option.wrong    .mc-option-letter { background: var(--rose-400);  color: white; }

/* ── Gap fill ────────────────────────────── */
.gapfill-sentence {
  font-size:     var(--text-md);
  line-height:   2.2;
  margin-bottom: var(--sp-5);
}

.gap-input {
  display:       inline-block;
  min-width:     80px;
  padding:       2px var(--sp-2);
  border:        none;
  border-bottom: 2.5px solid var(--brand-400);
  border-radius: 0;
  background:    transparent;
  font-size:     var(--text-md);
  font-weight:   var(--weight-bold);
  color:         var(--brand-700);
  text-align:    center;
  transition:    border-color var(--duration-fast) var(--ease-default);
  outline:       none;
}

.gap-input:focus {
  border-bottom-color: var(--color-secondary);
}

.gap-input.correct { border-bottom-color: var(--green-500); color: var(--green-600); }
.gap-input.wrong   { border-bottom-color: var(--color-danger); color: var(--color-danger); }

.gapfill-word-bank {
  display:       flex;
  flex-wrap:     wrap;
  gap:           var(--sp-2);
  margin-bottom: var(--sp-4);
  padding:       var(--sp-3);
  background:    var(--color-surface-alt);
  border-radius: var(--radius-md);
}

.gapfill-chip {
  padding:       var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border);
  font-size:     var(--text-sm);
  font-weight:   var(--weight-bold);
  cursor:        pointer;
  transition:    background var(--duration-fast) var(--ease-default),
                 transform  var(--duration-fast) var(--ease-spring),
                 opacity    var(--duration-fast) var(--ease-default);
}

.gapfill-chip:hover { background: var(--brand-100); transform: scale(1.05); }
.gapfill-chip.used  { opacity: 0.35; pointer-events: none; }

/* ── Matching ────────────────────────────── */
.matching-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap:     var(--sp-4);
}

.matching-col-title {
  font-size:   var(--text-xs);
  font-weight: var(--weight-extrabold);
  color:       var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom:  var(--sp-2);
}

.matching-items {
  display:        flex;
  flex-direction: column;
  gap:            var(--sp-2);
}

.match-item {
  padding:       var(--sp-3) var(--sp-4);
  border:        1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size:     var(--text-sm);
  font-weight:   var(--weight-semibold);
  cursor:        pointer;
  transition:    background var(--duration-fast) var(--ease-default),
                 border-color var(--duration-fast) var(--ease-default),
                 transform    var(--duration-fast) var(--ease-spring);
  user-select:   none;
  text-align:    center;
}

.match-item:hover:not(.matched):not(.disabled) {
  background:   var(--brand-50);
  border-color: var(--brand-300);
}

.match-item.selected {
  background:   var(--brand-100);
  border-color: var(--brand-500);
  transform:    scale(1.03);
  box-shadow:   var(--shadow-glow-brand);
}

.match-item.matched.correct {
  background:   #dcfce7;
  border-color: var(--green-500);
  cursor:       default;
}

.match-item.matched.wrong {
  background:   #ffe4e6;
  border-color: var(--color-danger);
  cursor:       default;
  animation:    shake 0.4s ease;
}

.match-item.disabled { opacity: 0.5; cursor: default; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-5px); }
  75%       { transform: translateX(5px); }
}

/* ── Unscramble ──────────────────────────── */
.unscramble-drop-zone {
  min-height:    52px;
  border:        2px dashed var(--brand-300);
  border-radius: var(--radius-lg);
  padding:       var(--sp-3);
  display:       flex;
  flex-wrap:     wrap;
  gap:           var(--sp-2);
  margin-bottom: var(--sp-4);
  background:    var(--brand-50);
  transition:    border-color var(--duration-fast) var(--ease-default),
                 background   var(--duration-fast) var(--ease-default);
}

.unscramble-drop-zone.correct {
  border-color: var(--green-500);
  background:   #f0fdf4;
}

.unscramble-drop-zone.wrong {
  border-color: var(--color-danger);
  background:   #fff1f2;
}

.unscramble-drop-zone-hint {
  color:      var(--color-text-faint);
  font-size:  var(--text-sm);
  font-style: italic;
  align-self: center;
  padding:    var(--sp-1);
}

.word-chips-pool {
  display:   flex;
  flex-wrap: wrap;
  gap:       var(--sp-2);
}

.word-chip {
  padding:       var(--sp-2) var(--sp-3);
  border-radius: var(--radius-full);
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border);
  font-size:     var(--text-sm);
  font-weight:   var(--weight-bold);
  cursor:        pointer;
  transition:    background  var(--duration-fast) var(--ease-default),
                 transform   var(--duration-fast) var(--ease-spring),
                 border-color var(--duration-fast) var(--ease-default),
                 opacity     var(--duration-fast) var(--ease-default);
  user-select:   none;
}

.word-chip:hover:not(.used):not(.placed) {
  background:   var(--teal-50);
  border-color: var(--teal-400);
  transform:    scale(1.06);
}

.word-chip.placed {
  background:   var(--brand-100);
  border-color: var(--brand-400);
  color:        var(--brand-700);
}

.word-chip.in-zone {
  cursor: pointer;
}

.word-chip.in-zone:hover {
  background:   #ffe4e6;
  border-color: var(--color-danger);
  transform:    scale(1.04);
}

/* ── Link type ───────────────────────────── */
.mission-link-card {
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding:       var(--sp-10) var(--sp-8);
  text-align:    center;
  display:       flex;
  flex-direction:column;
  align-items:   center;
  gap:           var(--sp-5);
}

.mission-link-icon { font-size: 52px; line-height: 1; }

.mission-link-title {
  font-family: var(--font-display);
  font-size:   var(--text-xl);
  font-weight: var(--weight-bold);
}

.mission-link-desc {
  font-size:  var(--text-sm);
  color:      var(--color-text-muted);
  max-width:  320px;
}

/* ── Feedback banner ─────────────────────── */
.feedback-banner {
  display:       flex;
  align-items:   center;
  gap:           var(--sp-3);
  padding:       var(--sp-4) var(--sp-5);
  border-radius: var(--radius-lg);
  font-size:     var(--text-sm);
  font-weight:   var(--weight-bold);
  animation:     feedbackIn var(--duration-normal) var(--ease-spring);
}

@keyframes feedbackIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

.feedback-banner.correct { background: #dcfce7; color: var(--green-600); }
.feedback-banner.wrong   { background: #ffe4e6; color: #be123c; }
.feedback-banner.info    { background: var(--teal-100); color: var(--teal-700); }

.feedback-explanation {
  font-weight: var(--weight-normal);
  font-size:   var(--text-xs);
  margin-top:  var(--sp-1);
  opacity:     0.85;
}

/* ── Game action row ─────────────────────── */
.game-actions {
  display:         flex;
  justify-content: space-between;
  align-items:     center;
  gap:             var(--sp-3);
}

/* ── Results screen ──────────────────────── */
.results-screen {
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border-soft);
  border-radius: var(--radius-2xl);
  padding:       var(--sp-10) var(--sp-8);
  text-align:    center;
  display:       flex;
  flex-direction:column;
  align-items:   center;
  gap:           var(--sp-5);
  box-shadow:    var(--shadow-lg);
  animation:     resultsIn var(--duration-slow) var(--ease-spring);
}

@keyframes resultsIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

.results-emoji {
  font-size:   72px;
  line-height: 1;
  animation:   resultsBounce 0.6s var(--ease-spring) 0.2s both;
}

@keyframes resultsBounce {
  from { transform: scale(0.5); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.results-title {
  font-family: var(--font-display);
  font-size:   var(--text-2xl);
  font-weight: var(--weight-bold);
}

.results-score-ring {
  position:   relative;
  width:      120px;
  height:     120px;
}

.results-score-ring svg {
  transform:  rotate(-90deg);
}

.results-score-ring circle {
  fill:             none;
  stroke-width:     10;
  stroke-linecap:   round;
}

.ring-bg     { stroke: var(--neutral-150); }
.ring-fill   { stroke: var(--color-secondary); transition: stroke-dashoffset 1s var(--ease-out); }

.results-score-text {
  position:   absolute;
  inset:      0;
  display:    flex;
  flex-direction: column;
  align-items:    center;
  justify-content:center;
  gap: 2px;
}

.results-pct {
  font-size:   var(--text-2xl);
  font-weight: var(--weight-black);
  line-height: 1;
}

.results-pct-label {
  font-size:  var(--text-xs);
  color:      var(--color-text-muted);
  font-weight:var(--weight-bold);
}

.results-xp-earned {
  display:       flex;
  align-items:   center;
  gap:           var(--sp-2);
  padding:       var(--sp-3) var(--sp-6);
  background:    var(--brand-100);
  border-radius: var(--radius-full);
  font-size:     var(--text-md);
  font-weight:   var(--weight-extrabold);
  color:         var(--brand-700);
}

.results-breakdown {
  width:   100%;
  display: flex;
  flex-direction: column;
  gap:     var(--sp-2);
  text-align: left;
}

.results-breakdown-row {
  display:         flex;
  justify-content: space-between;
  align-items:     center;
  padding:         var(--sp-2) var(--sp-3);
  border-radius:   var(--radius-md);
  font-size:       var(--text-sm);
  background:      var(--color-surface-alt);
}

.results-breakdown-row.correct-row { background: #f0fdf4; }
.results-breakdown-row.wrong-row   { background: #fff1f2; }


/* ═══════════════════════════════════════════
   TEACHER — MISSIONS TAB
═══════════════════════════════════════════ */
.mission-teacher-card {
  background:    var(--color-surface);
  border:        1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding:       var(--sp-5);
  display:       flex;
  flex-direction:column;
  gap:           var(--sp-3);
  box-shadow:    var(--shadow-sm);
  transition:    box-shadow var(--duration-normal) var(--ease-default);
}

.mission-teacher-card:hover { box-shadow: var(--shadow-md); }

.mtc-top {
  display:     flex;
  align-items: flex-start;
  gap:         var(--sp-3);
}

.mtc-emoji {
  font-size:     var(--text-xl);
  width:         40px;
  height:        40px;
  border-radius: var(--radius-lg);
  background:    var(--brand-100);
  display:       flex;
  align-items:   center;
  justify-content:center;
  flex-shrink:   0;
}

.mtc-info { flex: 1; min-width: 0; }

.mtc-title {
  font-size:   var(--text-sm);
  font-weight: var(--weight-extrabold);
  margin-bottom:var(--sp-1);
}

.mtc-meta {
  font-size: var(--text-xs);
  color:     var(--color-text-muted);
  display:   flex;
  gap:       var(--sp-3);
  flex-wrap: wrap;
}

.mtc-actions {
  display:  flex;
  gap:      var(--sp-2);
  flex-wrap:wrap;
}

/* Question builder */
.question-builder {
  border:        1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow:      hidden;
  margin-bottom: var(--sp-3);
}

.qb-header {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  padding:         var(--sp-3) var(--sp-4);
  background:      var(--color-surface-alt);
  border-bottom:   1.5px solid var(--color-border-soft);
  font-size:       var(--text-sm);
  font-weight:     var(--weight-extrabold);
}

.qb-body {
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

/* Assigned students chips */
.assign-chips {
  display:   flex;
  flex-wrap: wrap;
  gap:       var(--sp-2);
  margin-top:var(--sp-2);
}

.assign-chip {
  display:       flex;
  align-items:   center;
  gap:           var(--sp-1);
  padding:       var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  background:    var(--teal-100);
  color:         var(--teal-700);
  font-size:     var(--text-xs);
  font-weight:   var(--weight-bold);
}

.assign-chip-remove {
  cursor:      pointer;
  font-size:   var(--text-xs);
  opacity:     0.6;
  transition:  opacity var(--duration-fast);
}

.assign-chip-remove:hover { opacity: 1; }


/* ═══════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════ */
@media (max-width: 600px) {
  .missions-grid          { grid-template-columns: 1fr; }
  .matching-container     { grid-template-columns: 1fr; }
  .results-screen         { padding: var(--sp-8) var(--sp-5); }
  .mission-link-card      { padding: var(--sp-8) var(--sp-5); }
  .game-header            { padding: var(--sp-4); }
  .question-card          { padding: var(--sp-5); }
}