/* ==========================================================================
   BrainTrain - Design System & Styles Globaux (Mobile-First)
   ========================================================================== */

:root {
  /* Palette de couleurs chaudes et modernes */
  --bg-primary: #FAF8F5;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F3EFEA;
  --bg-muted: #EBE5DC;
  
  --border-subtle: #E8E2D8;
  --border-strong: #D5CDC0;
  
  --text-primary: #1C1917;
  --text-secondary: #57534E;
  --text-muted: #78716C;
  --text-on-accent: #FFFFFF;
  
  /* Couleurs d'accentuation */
  --accent-primary: #4F46E5;
  --accent-primary-hover: #4338CA;
  --accent-primary-subtle: #EEF2FF;
  
  --accent-coral: #E11D48;
  --accent-coral-subtle: #FFE4E6;
  
  --accent-amber: #D97706;
  --accent-amber-subtle: #FEF3C7;
  
  --accent-emerald: #059669;
  --accent-emerald-subtle: #D1FAE5;
  
  --accent-sky: #0284C7;
  --accent-sky-subtle: #E0F2FE;

  /* Difficultés */
  --diff-easy-bg: #ECFDF5;
  --diff-easy-text: #065F46;
  --diff-medium-bg: #FEF3C7;
  --diff-medium-text: #92400E;
  --diff-hard-bg: #FEE2E2;
  --diff-hard-text: #991B1B;

  /* Typographie & Rayons */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Ombres douces et élégantes */
  --shadow-sm: 0 1px 3px rgba(28, 25, 23, 0.05);
  --shadow-md: 0 4px 12px rgba(28, 25, 23, 0.06), 0 1px 2px rgba(28, 25, 23, 0.04);
  --shadow-lg: 0 10px 25px -3px rgba(28, 25, 23, 0.08), 0 4px 6px -2px rgba(28, 25, 23, 0.04);
  --shadow-pop: 0 16px 36px -4px rgba(79, 70, 229, 0.22);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 240ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  min-height: 100%;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
  overflow-x: hidden;
}

/* --------------------------------------------------------------------------
   Conteneur Principal App (Mobile-First Frame)
   -------------------------------------------------------------------------- */
#app {
  width: 100%;
  max-width: 540px;
  min-height: 100vh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: var(--bg-primary);
}

@media (min-width: 768px) {
  #app {
    max-width: 600px;
    min-height: 96vh;
    margin: 2vh auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-subtle);
    background-color: var(--bg-surface);
  }
}

/* --------------------------------------------------------------------------
   Navigation & Vues
   -------------------------------------------------------------------------- */
.view {
  display: none;
  flex-direction: column;
  flex: 1;
  width: 100%;
  padding: 0.625rem 0.625rem 1.5rem;
  box-sizing: border-box;
  animation: fadeIn var(--transition-normal) ease-out;
}

@media (min-width: 480px) {
  .view {
    padding: 1rem 1.125rem 2rem;
  }
}

.view.active {
  display: flex;
}

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

/* --------------------------------------------------------------------------
   En-tête de l'application
   -------------------------------------------------------------------------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-primary) 0%, #7C3AED 100%);
  color: #FFF;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.25);
  font-size: 1.25rem;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #1C1917 40%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Cartes & Sections
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.125rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1rem;
}

.section-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.625rem;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

/* --------------------------------------------------------------------------
   Bannière Reprendre Partie
   -------------------------------------------------------------------------- */
.resume-banner {
  background: linear-gradient(135deg, #EEF2FF 0%, #FAF5FF 100%);
  border: 1.5px solid #C7D2FE;
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  animation: pulseGlow 3s infinite alternate;
}

@keyframes pulseGlow {
  0% { box-shadow: 0 2px 8px rgba(79, 70, 229, 0.1); }
  100% { box-shadow: 0 4px 16px rgba(79, 70, 229, 0.2); }
}

.resume-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.resume-title {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.resume-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.btn-resume {
  background-color: var(--accent-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.875rem;
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.3);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.btn-resume:active {
  transform: scale(0.96);
}

/* --------------------------------------------------------------------------
   Sélecteur de Jeu (Cartes Interactives)
   -------------------------------------------------------------------------- */
.game-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.625rem;
  margin-bottom: 1.125rem;
}

.game-option {
  background: var(--bg-surface);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.875rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  position: relative;
}

.game-option:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.game-option.active {
  background: var(--accent-primary-subtle);
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 1px var(--accent-primary), var(--shadow-sm);
}

.game-option .game-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.game-option .game-name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.game-option.active .game-name {
  color: var(--accent-primary);
}

/* --------------------------------------------------------------------------
   Pill Selectors (Temps & Difficulté)
   -------------------------------------------------------------------------- */
.pill-group {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.125rem;
  overflow-x: auto;
  padding-bottom: 2px;
}

.pill-btn {
  flex: 1;
  min-height: 44px;
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.pill-btn:hover {
  border-color: var(--border-strong);
}

.pill-btn.active {
  background-color: var(--text-primary);
  border-color: var(--text-primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-sm);
}

.pill-btn.active.pill-easy {
  background-color: var(--accent-emerald);
  border-color: var(--accent-emerald);
}

.pill-btn.active.pill-medium {
  background-color: var(--accent-amber);
  border-color: var(--accent-amber);
}

.pill-btn.active.pill-hard {
  background-color: var(--accent-coral);
  border-color: var(--accent-coral);
}

/* --------------------------------------------------------------------------
   Boutons Primaires & Actions
   -------------------------------------------------------------------------- */
.cta-container {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.btn-primary {
  width: 100%;
  min-height: 52px;
  background: linear-gradient(135deg, var(--accent-primary) 0%, #6366F1 100%);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.0625rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-pop);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: scale(0.97);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  min-height: 44px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
}

.btn-secondary:active {
  transform: scale(0.97);
}

.match-counter {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   En-tête de Jeu (Game View Header)
   -------------------------------------------------------------------------- */
.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.875rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.game-header-left {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.125rem;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-subtle);
}

.btn-icon:active {
  transform: scale(0.94);
}

.game-title-group {
  display: flex;
  flex-direction: column;
}

.game-title {
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.badge-difficulty {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  margin-top: 0.125rem;
}

.badge-facile {
  background-color: var(--diff-easy-bg);
  color: var(--diff-easy-text);
}

.badge-moyen {
  background-color: var(--diff-medium-bg);
  color: var(--diff-medium-text);
}

.badge-difficile {
  background-color: var(--diff-hard-bg);
  color: var(--diff-hard-text);
}

.timer-box {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   Modal Popup (Victoire, Abandon, Confirmation)
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(28, 25, 23, 0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  z-index: 1000;
  animation: fadeIn var(--transition-fast) ease-out;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 400px;
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-subtle);
  animation: scaleUp var(--transition-bounce);
}

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

.modal-icon {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.modal-title {
  font-size: 1.375rem;
  font-weight: 800;
  margin-bottom: 0.375rem;
  color: var(--text-primary);
}

.modal-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.4;
}

.modal-stats {
  background-color: var(--bg-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-around;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.stat-label {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-value {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

/* --------------------------------------------------------------------------
   Toast / Notification Flottante
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1100;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background-color: var(--text-primary);
  color: #FFFFFF;
  padding: 0.625rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: toastIn 200ms ease-out forwards;
}

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