/* ============================================================
   app.css — Mahjong Sensei App Shell Styles
   Extracted from index.html inline <style> + new components
   ============================================================ */

/* ─── Reset & Box Model ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── App Shell Layout ──────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 1rem;
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-lg);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.topbar__logo { font-size: 1.5rem; }

.topbar__nav {
  display: flex;
  gap: 0.25rem;
}

.topbar__link {
  background: none;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all 0.15s ease;
}

.topbar__link:hover { background: var(--color-surface-alt); color: var(--color-text); }
.topbar__link--active { background: var(--color-primary); color: var(--color-primary-text); }

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  /* leave room for mobile bottom nav */
  padding-bottom: 5rem;
}

@media (min-width: 769px) {
  .app-main { padding-bottom: 2rem; }
}

.page { display: none; }
.page--active {
  display: block;
  animation: page-reveal 0.35s ease-out;
}

/*
  IMPORTANT: do NOT use `transform` in this keyframe. The board game page
  contains `#board-wrapper` which uses `position: fixed` to fill the viewport
  below the topbar. Any non-`none` transform on an ancestor promotes that
  ancestor to a containing block for its fixed descendants, which collapses
  the wrapper's fill-the-viewport behaviour (observed: wrapper clientHeight
  = 0 while the animation was mid-state). Keep the fade-only version here.
*/
@keyframes page-reveal {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.page__header { margin-bottom: 2rem; }
.page__header h2 {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  margin-bottom: 0.25rem;
  letter-spacing: 0.02em;
}

/* ─── Hero ──────────────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 4rem 1rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.hero__subtitle {
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.hero__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ─── Home Grid ─────────────────────────────────────────────────────────── */
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card--interactive {
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card--interactive:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(5, 15, 8, 0.35);
  border-color: var(--color-primary);
}
.card--interactive:active {
  transform: translateY(-1px) scale(0.99);
  transition-duration: 0.08s;
}

/* ─── Icon Cards (home grid) ───────────────────────────────────────────── */
.card--icon {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem;
}

.card__icon {
  width: 80px;
  height: 80px;
  max-width: 80px;
  max-height: 80px;
  object-fit: contain;
  border-radius: 12px;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.3));
  transition: transform 0.2s ease;
}

.card--icon:hover .card__icon {
  transform: scale(1.08);
}

.card__text {
  flex: 1;
  min-width: 0;
}

@media (max-width: 480px) {
  .card__icon {
    width: 56px;
    height: 56px;
    max-width: 56px;
    max-height: 56px;
  }
  .card--icon {
    gap: 0.75rem;
    padding: 1rem;
  }
}

/* ─── Play ──────────────────────────────────────────────────────────────── */
.resume-banner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(200, 170, 100, 0.08);
  border: 1px solid rgba(200, 170, 100, 0.2);
}
.resume-banner__btn { white-space: nowrap; }
.resume-banner__text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
/* ── Rules Configuration Panel ── */
.rules-config {
  margin-bottom: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface-alt);
  overflow: hidden;
}
.rules-config__toggle {
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.rules-config__toggle::before {
  content: '\25B6';
  font-size: 0.6em;
  transition: transform 0.2s;
}
.rules-config[open] .rules-config__toggle::before {
  transform: rotate(90deg);
}
.rules-config__toggle::-webkit-details-marker { display: none; }
.rules-config__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  padding: 0 1rem 1rem;
}
.rules-config__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-sm);
  color: var(--color-text);
}
.rules-config__item select {
  flex: 1;
  max-width: 200px;
}

.difficulty-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.difficulty-card {
  text-align: center;
  padding: 2rem;
  border: 2px solid var(--color-border);
  background: var(--color-surface-alt);
}
.difficulty-card:hover {
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 0 0 1px var(--color-primary), 0 8px 24px rgba(61, 168, 120, 0.15);
}
.difficulty-card h3 { margin-bottom: 0.5rem; color: var(--color-text); }

.game-board {
  border-radius: 12px;
}

/* When game-board gets the board class — sizing controlled by board.css */
.game-board.board {
  margin: 0 auto;
  border: 2px solid var(--color-border);
  padding: 0;
}

.board__hand {
  margin-bottom: 2rem;
  padding: 1rem;
  background: var(--color-surface-alt);
  border-radius: 8px;
  text-align: center;
}

.board__discards {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1rem;
  align-items: start;
}

.discard-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  padding-top: 0.5rem;
}

.game-helpers {
  margin-top: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.5rem;
}

.board__hand { margin-bottom: 2rem; }
.board__discards { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.discard-label { font-weight: 600; font-size: var(--fs-sm); margin-bottom: 0.25rem; }

/* ─── Coming Soon cards (unimplemented multiplayer modes) ──────────────── */
.card--coming-soon {
  position: relative;
  opacity: 0.35;
  pointer-events: none;
  cursor: default;
  filter: grayscale(0.6);
  border-style: dashed;
  user-select: none;
}

/* ─── Puzzles ───────────────────────────────────────────────────────────── */
.puzzle-types {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.puzzle-area { min-height: 200px; }

/* ─── Learn ─────────────────────────────────────────────────────────────── */
.lesson-list { display: flex; flex-direction: column; gap: 1rem; }
.lesson-list .card { padding: 1.5rem; }
.lesson-list .card h3 { margin-bottom: 0.75rem; }
.lesson-list .card div { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.lesson-content { max-width: 800px; }

/* ─── Reference ─────────────────────────────────────────────────────────── */
.reference-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.reference-controls .input { flex: 1; }

.yaku-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.yaku-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.yaku-card__english {
  font-size: var(--fs-sm);
  color: var(--color-secondary);
  margin-bottom: 0.25rem;
}

.yaku-card__mnemonic { margin-top: 0.5rem; font-size: var(--fs-sm); }

/* ─── Stats ─────────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-number {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--color-primary);
}

.stats-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.stats-charts canvas {
  width: 100%;
  height: auto;
  border-radius: 12px;
  background: var(--color-surface);
}

/* ─── XP Bar (topbar) ───────────────────────────────────────────────────── */
.xp-bar-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.xp-bar {
  width: 80px;
  height: 8px;
  background: var(--color-border, #e0e0e0);
  border-radius: 4px;
  overflow: hidden;
}

.xp-bar__fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 4px;
  transition: width 0.4s ease;
}

.xp-level {
  font-size: var(--fs-xs, 0.75rem);
  font-weight: 700;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ─── Rank Badge ────────────────────────────────────────────────────────── */
.rank-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: var(--fs-xs, 0.7rem);
  font-weight: 700;
  background: var(--color-secondary, #6c757d);
  color: #fff;
  white-space: nowrap;
  line-height: 1.4;
}

/* ─── Mobile Bottom Nav ─────────────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed !important;
  bottom: 0 !important;
  top: auto !important;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 0.25rem 0 env(safe-area-inset-bottom, 0);
  flex-direction: row;
  justify-content: space-around;
  align-items: stretch;
}

.mobile-nav__item {
  flex: 1;
  background: none;
  border: none;
  padding: 0.5rem 0.25rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  color: var(--color-text-muted);
  font-size: var(--fs-xs, 0.7rem);
  font-weight: 500;
  transition: color 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav__item:active { opacity: 0.7; }

.mobile-nav__item--active {
  color: var(--color-primary);
}

.mobile-nav__icon { font-size: 1.3rem; line-height: 1; }
.mobile-nav__label { font-size: 0.65rem; }

/* ─── Toast Notification ────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0.75rem 1.25rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 300;
  white-space: nowrap;
  max-width: calc(100vw - 2rem);
  text-align: center;
}

.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.toast--success { border-color: var(--color-success, #28a745); color: var(--color-success, #28a745); }
.toast--error   { border-color: var(--color-danger, #dc3545);  color: var(--color-danger, #dc3545); }
.toast--info    { border-color: var(--color-primary);           color: var(--color-primary); }

/* ─── Profile Page ──────────────────────────────────────────────────────── */
.profile-header {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2rem;
  padding: 2rem;
  background: var(--color-surface);
  border-radius: 16px;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  flex-shrink: 0;
}

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

.profile-name {
  font-size: var(--fs-xl);
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.profile-meta {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.profile-xp-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.profile-xp-bar .xp-bar {
  width: 200px;
  height: 10px;
}

.profile-xp-label {
  font-size: var(--fs-xs, 0.75rem);
  color: var(--color-text-muted);
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.profile-section-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: 1rem;
  margin-top: 1.5rem;
}

/* ─── Yaku Distribution (Stats Page) ───────────────────────────────────── */
.stats-yaku-section {
  margin-top: 1.5rem;
}

.stats-yaku-section h3 {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.stat-yaku-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.stat-yaku-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0.75rem;
  background: var(--color-bg, #f5f5f0);
  border-radius: 6px;
  font-size: var(--fs-sm);
}

.stat-yaku-name {
  font-weight: 500;
  color: var(--color-text);
}

.stat-yaku-count {
  font-weight: 700;
  color: var(--color-primary);
  min-width: 2rem;
  text-align: right;
}

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .topbar { flex-wrap: wrap; gap: 0.5rem; }
  .topbar__nav { width: 100%; overflow-x: auto; display: none; }
  .hero__title { font-size: var(--fs-2xl); }
  .hero__actions { flex-direction: column; align-items: center; }
  .stats-charts { grid-template-columns: 1fr; }
  .reference-controls { flex-direction: column; }
  .xp-bar-wrap .xp-bar { width: 60px; }

  /* Show mobile nav */
  .mobile-nav { display: flex; }

  /* Toast sits above mobile nav */
  .toast { bottom: 5.5rem; }

  .profile-header { flex-direction: column; text-align: center; }
  .profile-xp-bar { justify-content: center; }
  .profile-xp-bar .xp-bar { width: 160px; }

  /* Stats tabs horizontal scroll on mobile */
  .stats-tabs {
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .stats-tabs::-webkit-scrollbar { display: none; }
}

@media (min-width: 769px) {
  .topbar__nav { display: flex; }
  .mobile-nav  { display: none !important; }
  .toast { bottom: 2rem; }
}

/* ========================================================================
   UI/UX OVERHAUL — New component styles
   ======================================================================== */

/* ── Topbar: streak + level ── */
.topbar__streak {
  color: #e67e22;
  font-weight: 700;
  font-size: var(--fs-sm);
}
.topbar__level {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

/* ── Home: Minimal Focus ── */
.home-hero {
  text-align: center;
  padding: var(--sp-12) 0 var(--sp-8);
}
.home-hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  color: var(--color-text);
  margin-bottom: var(--sp-2);
}
.home-hero__meta {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
}
.home-hero__streak { color: #e67e22; font-weight: 700; }
.home-hero__dot { opacity: 0.4; }
.home-hero__cta {
  padding: var(--sp-3) var(--sp-10);
  font-size: var(--fs-lg);
}
.home-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-4);
  max-width: 520px;
  margin: 0 auto;
}
.card__icon-emoji {
  font-size: 1.5rem;
  margin-bottom: var(--sp-2);
}
@media (max-width: 480px) {
  .home-grid { grid-template-columns: 1fr; max-width: 300px; }
  .home-hero__title { font-size: var(--fs-2xl); }
}

/* ── Play: Character Coaches ── */
.coach-bubble {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-3) var(--sp-4);
  margin-bottom: var(--sp-4);
}
.coach-bubble__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.coach-bubble__text {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
}
.difficulty-card { text-align: center; }
.difficulty-card__avatar {
  font-size: 1.5rem;
  margin-bottom: var(--sp-2);
}
.difficulty-card__coach {
  display: block;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: var(--sp-2);
  font-style: italic;
}
.difficulty-card--beginner { border-top: 3px solid #6ac66a; }
.difficulty-card--intermediate { border-top: 3px solid #e6c84a; }
.difficulty-card--advanced { border-top: 3px solid #d46060; }

.coming-soon-row {
  display: flex;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}
.coming-soon-pill {
  flex: 1;
  text-align: center;
  padding: var(--sp-2) var(--sp-3);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
  opacity: 0.5;
}
@media (max-width: 480px) {
  .coming-soon-row { flex-direction: column; }
}

/* ── Puzzles: Split Layout ── */
.page__header--split {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.puzzle-header-stats {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}
.puzzle-header-streak {
  color: #e67e22;
  font-weight: 700;
  font-size: var(--fs-base);
}
.puzzle-split {
  display: flex;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}
.puzzle-sidebar {
  width: 180px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}
.puzzle-cat {
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  text-align: left;
  cursor: pointer;
  font-size: var(--fs-sm);
  transition: var(--transition-fast);
  font-family: inherit;
}
.puzzle-cat:hover { background: var(--color-surface-alt); color: var(--color-text); }
.puzzle-cat--active {
  background: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
}
.puzzle-cat--featured { font-weight: 600; }
.puzzle-cat-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--sp-1) 0;
}
.puzzle-main {
  flex: 1;
  min-height: 300px;
}
.puzzle-hero {
  text-align: center;
  padding: var(--sp-10) var(--sp-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.puzzle-hero__icon {
  font-size: 2.5rem;
  margin-bottom: var(--sp-3);
}
.puzzle-hero h3 {
  font-family: var(--font-display);
  margin-bottom: var(--sp-2);
}
@media (max-width: 640px) {
  .puzzle-split { flex-direction: column; }
  .puzzle-sidebar {
    width: 100%;
    flex-direction: row;
    overflow-x: auto;
    gap: var(--sp-2);
    padding-bottom: var(--sp-2);
  }
  .puzzle-cat { white-space: nowrap; }
  .puzzle-cat-divider { display: none; }
}

/* ── Learn: Progress bar in header ── */
.learn-header-progress {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}
.learn-header-count {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
}
.learn-header-bar {
  width: 80px;
  height: 6px;
  background: var(--color-surface);
  border-radius: 3px;
  overflow: hidden;
}
.learn-header-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover, var(--color-primary)));
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* ── Stats: Tabbed Layout ── */
.stats-tabs {
  display: flex;
  gap: var(--sp-1);
  margin-bottom: var(--sp-4);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0;
}
.stats-tab {
  padding: var(--sp-2) var(--sp-4);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: 500;
  font-family: inherit;
  transition: var(--transition-fast);
}
.stats-tab:hover { color: var(--color-text); }
.stats-tab--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.stats-tab-panel { display: none; }
.stats-tab-panel--active { display: block; }

.stats-empty-charts {
  margin-top: var(--sp-6);
}
.stats-empty-cta {
  text-align: center;
  padding: var(--sp-8) var(--sp-6);
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
}
.stats-empty-cta__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--sp-2);
}
.stats-empty-cta p {
  color: var(--color-text-muted);
  margin-bottom: var(--sp-3);
}

/* ── Profile: Gaming Card ── */
.profile-card {
  text-align: center;
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-alt));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-8) var(--sp-6);
  margin-bottom: var(--sp-4);
}
.profile-card__avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto var(--sp-3);
}
.profile-card__name {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--sp-2);
}
.profile-card__badges {
  display: flex;
  gap: var(--sp-2);
  justify-content: center;
  margin-bottom: var(--sp-4);
}
.profile-badge {
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
}
.profile-badge--rank {
  background: var(--color-secondary);
  color: var(--color-secondary-text, #fff);
}
.profile-badge--tier {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.profile-card__xp-bar {
  max-width: 280px;
  margin: 0 auto;
}
.profile-card__xp-label {
  display: block;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: var(--sp-1);
}
.profile-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}
@media (max-width: 480px) {
  .profile-stats-row { grid-template-columns: 1fr; }
  .profile-card { padding: var(--sp-4) var(--sp-3); }
  .profile-card__avatar { width: 48px; height: 48px; font-size: 1.4rem; }
  .profile-card__name { font-size: var(--fs-lg); }
}
@media (max-width: 360px) {
  .coach-bubble { padding: var(--sp-2) var(--sp-3); }
  .coach-bubble__text { font-size: var(--fs-xs); }
}

/* ── Learn: Module Card Grid ── */
.module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}
.module-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}
.module-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.module-card--locked {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
}
.module-card--complete { border-color: var(--color-success); }
.module-card__icon { font-size: 2rem; margin-bottom: var(--sp-2); }
.module-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--sp-2);
}
.module-card__progress-text {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-2);
}
.module-card__bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}
.module-card__bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.module-card__lock {
  position: absolute;
  top: var(--sp-2);
  right: var(--sp-2);
  font-size: 0.9rem;
  opacity: 0.6;
}
.module-lessons-expanded {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  margin-top: var(--sp-4);
}
.module-lessons-expanded h3 {
  font-family: var(--font-display);
  margin-bottom: var(--sp-3);
}
.module-lessons-expanded__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}
.btn--completed {
  border-color: var(--color-success);
  color: var(--color-success);
}
@media (max-width: 768px) {
  .module-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .module-grid { grid-template-columns: 1fr; max-width: 100%; margin: 0 auto; padding: 0 12px; }
}

/* ── Training Camp Banner ── */
.training-camp {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: linear-gradient(135deg, rgba(74, 111, 165, 0.15), rgba(74, 111, 165, 0.05));
  border: 1px solid rgba(74, 111, 165, 0.3);
  border-radius: var(--radius-lg);
  margin-bottom: var(--sp-4);
}
.training-camp__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}
.training-camp__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
.training-camp__text strong {
  font-size: var(--fs-sm);
  color: var(--color-text);
}
.training-camp__text span {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}
.training-camp__btn {
  flex-shrink: 0;
  white-space: nowrap;
}
.training-camp--hidden {
  display: none !important;
}

/* ── Support / Tip Jar ── */
.support-card {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-alt));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-5) var(--sp-6);
  margin-top: var(--sp-6);
}
.support-card__icon {
  font-size: 2rem;
  flex-shrink: 0;
}
.support-card__text {
  flex: 1;
}
.support-card__text h3 {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  margin-bottom: var(--sp-1);
}
.support-card__btn {
  flex-shrink: 0;
  text-decoration: none;
  white-space: nowrap;
}
@media (max-width: 640px) {
  .support-card {
    flex-direction: column;
    text-align: center;
  }
}

/* Home page support link */
.home-support {
  text-align: center;
  margin-top: var(--sp-8);
  padding-top: var(--sp-4);
}
.home-support__link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--fs-sm);
  opacity: 0.7;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}
.home-support__link:hover {
  opacity: 1;
  color: var(--color-primary);
}

/* PWA Install prompt */
.home-install {
  text-align: center;
  margin-top: var(--sp-4);
}
.home-install__btn {
  margin-bottom: var(--sp-2);
}
.home-install__hint {
  font-size: var(--fs-xs);
  opacity: 0.7;
}