/* Gamification styles — hearts, post-lesson slides, quests, reward box, sidebar stats */

/* ─── Prevent body scroll when overlay is open ────────────────────────────── */
body.overlay-open { overflow: hidden; }

/* ─── Post-lesson overlay ─────────────────────────────────────────────────── */
.post-lesson-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: radial-gradient(circle at 15% 15%, rgba(34,197,94,0.24), rgba(2,6,23,0.92) 45%), rgba(2, 6, 23, 0.88);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.lesson-flow-frame {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.lesson-flow-header {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.65rem;
  border: 1px solid rgba(148,163,184,0.22);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
}

.lesson-flow-progress {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.35rem;
}

.lesson-flow-dot {
  height: 8px;
  border-radius: 999px;
  background: rgba(148,163,184,0.26);
  transition: background 160ms ease, transform 160ms ease;
}

.lesson-flow-dot.is-active {
  background: #22c55e;
  transform: translateY(-1px);
}

.lesson-flow-step {
  font-size: 0.78rem;
  color: var(--color-text-muted, #94a3b8);
}

.lesson-flow-skip {
  border: 0;
  background: transparent;
  color: var(--color-text-soft, #c7d2fe);
  font-weight: 600;
  font-size: 0.78rem;
  cursor: pointer;
}

/* ─── Lesson slide ────────────────────────────────────────────────────────── */
.lesson-slide {
  width: 100%;
  max-width: 520px;
  opacity: 0;
  transform: translateY(24px) scale(0.97);
  transition: opacity 260ms ease, transform 260ms ease;
}
.lesson-slide.slide-enter {
  opacity: 0;
  transform: translateY(24px) scale(0.97);
}
.lesson-slide.slide-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.lesson-slide__card {
  background: linear-gradient(160deg, rgba(17,24,39,0.98), rgba(15,23,42,0.98));
  border: 1px solid rgba(34,197,94,0.22);
  border-radius: var(--border-radius-lg, 14px);
  padding: 2rem 2rem 1.5rem;
  box-shadow: 0 24px 60px rgba(2,6,23,0.76);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.lesson-slide__title {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--color-text, #f8fafc);
  text-align: center;
}

.lesson-slide__subtitle {
  margin: 0;
  text-align: center;
  color: var(--color-text-muted, #94a3b8);
  font-size: 0.95rem;
}

.lesson-slide__body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.lesson-slide__footer {
  display: flex;
  justify-content: center;
  padding-top: 0.25rem;
}

.lesson-slide__continue {
  min-width: 160px;
  padding: 0.65rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 999px;
  background: #22c55e;
  border-color: #22c55e;
  color: #052e16;
}

.lesson-slide__continue:hover {
  filter: brightness(1.05);
}

/* ─── Slide 1 – Overview stats ────────────────────────────────────────────── */
.lesson-overview-stats {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.stat-card {
  flex: 1;
  min-width: 90px;
  max-width: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  background: rgba(30, 41, 59, 0.85);
  border: 1px solid rgba(34,197,94,0.16);
  border-radius: var(--border-radius, 10px);
  padding: 0.85rem 0.5rem;
}

.stat-icon  { font-size: 1.5rem; }
.stat-value { font-size: 1.35rem; font-weight: 700; color: var(--color-text, #f8fafc); }
.stat-label { font-size: 0.75rem; color: var(--color-text-muted, #94a3b8); text-transform: uppercase; letter-spacing: 0.04em; }

/* ─── Slide 2 – Streak ────────────────────────────────────────────────────── */
.streak-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
}

.streak-flame {
  font-size: 4rem;
  animation: flame-pulse 1.2s ease-in-out infinite;
}
@keyframes flame-pulse {
  0%, 100% { transform: scale(1);    }
  50%       { transform: scale(1.12); }
}

.streak-count {
  font-size: 3.5rem;
  font-weight: 800;
  color: #fb923c;
  line-height: 1;
}

.streak-unit {
  font-size: 1rem;
  color: var(--color-text-muted, #94a3b8);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ─── Slide 3 – Leaderboard ───────────────────────────────────────────────── */
.leaderboard-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.league-badge {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, color-mix(in srgb, var(--league-color) 80%, white 20%), var(--league-color));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 4px rgba(255,255,255,0.08), 0 8px 24px rgba(0,0,0,0.5);
  animation: badge-pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
@keyframes badge-pop {
  from { transform: scale(0.5); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.league-badge__name {
  font-weight: 700;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.9);
  text-shadow: 0 1px 3px rgba(0,0,0,0.6);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.league-stats {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.league-stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-bg-card-soft, #1e293b);
  border: 1px solid rgba(148,163,184,0.1);
  border-radius: var(--border-radius-sm, 6px);
  padding: 0.5rem 0.85rem;
}

.league-stat-label { color: var(--color-text-muted, #94a3b8); font-size: 0.875rem; }
.league-stat-value { color: var(--color-text, #f8fafc); font-size: 0.95rem; }

.league-tip {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-text-muted, #94a3b8);
  text-align: center;
}

/* ─── Slide 4 – Daily Quests ─────────────────────────────────────────────── */
.quests-coins-earned {
  margin: 0;
  text-align: center;
  font-weight: 600;
  color: #fbbf24;
  font-size: 0.95rem;
}

.quests-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.quest-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--color-bg-card-soft, #1e293b);
  border: 1px solid rgba(148,163,184,0.1);
  border-radius: var(--border-radius-sm, 6px);
  padding: 0.55rem 0.75rem;
  transition: border-color 0.2s;
}
.quest-item.is-done {
  border-color: rgba(34,197,94,0.35);
  background: rgba(34,197,94,0.06);
}

.quest-icon { font-size: 1.25rem; flex-shrink: 0; }

.quest-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.quest-label   { font-size: 0.82rem; color: var(--color-text, #f8fafc); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.quest-progress { font-size: 0.72rem; color: var(--color-text-muted, #94a3b8); }

.quest-bar {
  height: 4px;
  background: rgba(148,163,184,0.15);
  border-radius: 999px;
  overflow: hidden;
}
.quest-bar-fill {
  height: 100%;
  background: var(--color-secondary, #22c55e);
  border-radius: 999px;
  transition: width 0.4s ease;
}
.quest-item.is-done .quest-bar-fill { background: #22c55e; }

.quest-reward {
  font-size: 0.8rem;
  font-weight: 600;
  color: #fbbf24;
  flex-shrink: 0;
}

/* ─── Slide 5 – Reward Box ────────────────────────────────────────────────── */
.reward-upgrade {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  border-radius: var(--border-radius, 10px);
  border: 1px solid rgba(99,102,241,0.25);
  background: linear-gradient(135deg, rgba(30,41,59,0.75), rgba(15,23,42,0.9));
}

.reward-upgrade__info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.reward-upgrade__title {
  font-weight: 700;
  color: var(--color-text, #f8fafc);
  font-size: 0.9rem;
}

.reward-upgrade__desc {
  font-size: 0.75rem;
  color: var(--color-text-muted, #94a3b8);
}

.reward-upgrade__btn {
  border: 1px solid rgba(99,102,241,0.5);
  background: linear-gradient(90deg, rgba(79,70,229,0.25), rgba(99,102,241,0.12));
  color: #e2e8f0;
  font-weight: 700;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
  box-shadow: 0 4px 10px rgba(2,6,23,0.35);
}

.reward-upgrade__btn:hover:not(:disabled) {
  background: linear-gradient(90deg, rgba(79,70,229,0.35), rgba(99,102,241,0.2));
  border-color: rgba(99,102,241,0.75);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(2,6,23,0.45);
}

.reward-upgrade__btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.reward-upgrade__status {
  margin: 0;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-text-muted, #94a3b8);
}

.reward-box-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.reward-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  width: 120px;
  height: 120px;
  border-radius: var(--border-radius-lg, 14px);
  background: linear-gradient(135deg, #312e81, #4c1d95);
  border: 2px solid rgba(139, 92, 246, 0.5);
  box-shadow: 0 0 24px rgba(139,92,246,0.3);
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.reward-box.is-big {
  background: linear-gradient(135deg, #78350f, #b45309);
  border-color: rgba(245,158,11,0.7);
  box-shadow: 0 0 28px rgba(245,158,11,0.35);
}
.reward-box:hover:not(.is-opening) {
  transform: scale(1.05);
  box-shadow: 0 0 36px rgba(139,92,246,0.5);
}
.reward-box.is-opening {
  animation: box-shake 0.4s ease, box-open 0.35s 0.4s ease forwards;
}
@keyframes box-shake {
  0%   { transform: rotate(0deg); }
  20%  { transform: rotate(-6deg) scale(1.06); }
  40%  { transform: rotate(6deg)  scale(1.06); }
  60%  { transform: rotate(-4deg); }
  80%  { transform: rotate(4deg); }
  100% { transform: rotate(0deg); }
}
@keyframes box-open {
  to { transform: scale(0.8); opacity: 0; }
}

.reward-box__icon  { font-size: 2.5rem; pointer-events: none; }
.reward-box__hint  { font-size: 0.7rem; color: rgba(199,210,254,0.7); pointer-events: none; }

.reward-reveal { display: flex; justify-content: center; }
.reward-reveal.is-visible { animation: reveal-pop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) both; }
@keyframes reveal-pop {
  from { transform: scale(0.5) translateY(10px); opacity: 0; }
  to   { transform: scale(1)   translateY(0);    opacity: 1; }
}

.reward-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius, 10px);
  border: 2px solid;
}
.reward-item.rarity-common   { border-color: rgba(148,163,184,0.3); background: rgba(148,163,184,0.06); }
.reward-item.rarity-uncommon { border-color: rgba(34,197,94,0.4);   background: rgba(34,197,94,0.08); }
.reward-item.rarity-rare     { border-color: rgba(99,102,241,0.5);  background: rgba(99,102,241,0.1); }
.reward-item.rarity-epic     { border-color: rgba(234,179,8,0.6);   background: rgba(234,179,8,0.1); box-shadow: 0 0 20px rgba(234,179,8,0.2); }

.reward-item__icon   { font-size: 2.5rem; }
.reward-item__label  { font-size: 1rem; font-weight: 600; color: var(--color-text, #f8fafc); }
.reward-item__rarity {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.65;
  color: var(--color-text-muted, #94a3b8);
}
.reward-item.rarity-epic   .reward-item__rarity { color: #fbbf24; opacity: 1; }
.reward-item.rarity-rare   .reward-item__rarity { color: #a5b4fc; opacity: 1; }
.reward-item.rarity-uncommon .reward-item__rarity { color: #86efac; opacity: 1; }

/* ─── Hearts bar (in quiz) ────────────────────────────────────────────────── */
.hearts-bar {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.55rem 0.75rem;
  margin-bottom: 0.75rem;
  background: var(--color-bg-card, #111827);
  border: 1px solid rgba(148,163,184,0.12);
  border-radius: var(--border-radius, 10px);
}

.hearts-bar__label {
  font-size: 0.8rem;
  color: var(--color-text-muted, #94a3b8);
  margin-right: 0.25rem;
}

.heart-icon {
  font-size: 1.3rem;
  transition: transform 0.2s ease, opacity 0.25s ease;
  line-height: 1;
}
.heart-icon.is-lost {
  opacity: 0.2;
  filter: grayscale(1);
}
.heart-icon.is-shaking {
  animation: heart-shake 0.4s ease;
}
@keyframes heart-shake {
  0%   { transform: scale(1); }
  25%  { transform: scale(1.4) rotate(-10deg); }
  50%  { transform: scale(0.8) rotate(10deg); }
  75%  { transform: scale(1.1) rotate(-5deg); }
  100% { transform: scale(1); }
}

/* ─── Hearts-empty overlay (quiz locked) ─────────────────────────────────── */
.hearts-empty-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(2, 6, 23, 0.7);
  backdrop-filter: blur(4px);
  border-radius: var(--border-radius, 10px);
  padding: 1rem;
}

.hearts-empty-card {
  background: var(--color-bg-card, #111827);
  border: 1px solid rgba(148,163,184,0.18);
  border-radius: var(--border-radius-lg, 14px);
  padding: 1.75rem 2rem;
  text-align: center;
  max-width: 340px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 20px 60px rgba(2,6,23,0.7);
}

.hearts-empty-icon {
  font-size: 3rem;
  animation: heartbreak 0.5s ease;
}
@keyframes heartbreak {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.3); }
  100% { transform: scale(1); }
}

.hearts-empty-card h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--color-text, #f8fafc);
}
.hearts-empty-card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted, #94a3b8);
}
.hearts-empty-card .hearts-empty-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.25rem;
}

/* ─── Complete-lesson button (bottom of quiz) ─────────────────────────────── */
.complete-lesson-btn-wrap {
  display: flex;
  justify-content: center;
  padding: 1.25rem 0 0.5rem;
}
.complete-lesson-btn {
  min-width: 200px;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 999px;
  background: linear-gradient(180deg, #4ade80, #22c55e);
  border: none;
  color: #052e16;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 4px 20px rgba(34,197,94,0.35);
}
.complete-lesson-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(34,197,94,0.5);
}
.complete-lesson-btn:active { transform: translateY(0); }

@media (max-width: 640px) {
  .lesson-flow-frame {
    max-width: 100%;
  }

  .lesson-slide__card {
    padding: 1.25rem 1rem 1rem;
  }

  .lesson-slide__title {
    font-size: 1.3rem;
  }

  .lesson-overview-stats {
    gap: 0.5rem;
  }

  .stat-card {
    min-width: 82px;
  }
}

/* ─── Sidebar stats ───────────────────────────────────────────────────────── */
.sidebar-gamification {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.75rem;
  background: rgba(99,102,241,0.07);
  border: 1px solid rgba(99,102,241,0.18);
  border-radius: var(--border-radius, 10px);
  margin-top: auto;
}

.sidebar-stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text, #f8fafc);
}
.sidebar-stat-icon { font-size: 1.1rem; width: 1.4rem; text-align: center; }
.sidebar-stat-val  { font-weight: 600; }
.sidebar-stat-name { color: var(--color-text-muted, #94a3b8); font-size: 0.8rem; }

/* ─── Store ──────────────────────────────────────────────────────────────── */
.store-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.store-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.7rem;
}

.store-summary-card {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 0.8rem;
  border-radius: 12px;
  border: 1px solid rgba(34,197,94,0.2);
  background: linear-gradient(180deg, rgba(30,41,59,0.8), rgba(17,24,39,0.92));
}

.store-summary-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34,197,94,0.18);
  font-size: 1.2rem;
}

.store-summary-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.store-summary-title {
  font-size: 0.75rem;
  color: var(--color-text-muted, #94a3b8);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.store-summary-value {
  font-size: 1.05rem;
  color: var(--color-text, #f8fafc);
}

.store-item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
}

.store-item-card {
  display: flex;
  gap: 0.8rem;
  padding: 0.85rem;
  border-radius: 14px;
  border: 1px solid rgba(99,102,241,0.28);
  background: linear-gradient(155deg, rgba(30,41,59,0.75), rgba(17,24,39,0.92));
  box-shadow: 0 10px 24px rgba(2,6,23,0.4);
}

.store-item-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(99,102,241,0.2);
}

.store-item-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.store-item-title {
  margin: 0;
  font-size: 1rem;
}

.store-item-description {
  margin: 0;
  color: var(--color-text-muted, #94a3b8);
  font-size: 0.86rem;
}

.store-item-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: auto;
}

.store-item-price {
  color: #fbbf24;
  font-weight: 700;
  font-size: 0.92rem;
}

.store-item-buy {
  border-radius: 999px;
  padding: 0.4rem 0.95rem;
  font-weight: 700;
}

.store-status {
  min-height: 1.25rem;
  color: var(--color-text-muted, #94a3b8);
  font-size: 0.87rem;
}

.store-status.is-success { color: #4ade80; }
.store-status.is-error { color: #fb7185; }