/* -------------------------------------------------------------
   DESIGN SYSTEM & VARIABLES
------------------------------------------------------------- */
:root {
  /* Fonts */
  --font-primary: 'Plus Jakarta Sans', sans-serif;
  --font-display: 'Outfit', sans-serif;

  /* Theme: Dark Mode (Default) */
  --bg-app: #090d16;
  --bg-card: rgba(17, 24, 39, 0.7);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-card-hover: rgba(255, 255, 255, 0.15);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Accent Colors */
  --color-accent: #6366f1; /* Indigo */
  --color-accent-glow: rgba(99, 102, 241, 0.35);
  
  --color-success: #10b981; /* Emerald */
  --color-success-glow: rgba(16, 185, 129, 0.25);
  
  --color-error: #ef4444; /* Rose */
  --color-error-glow: rgba(239, 68, 68, 0.25);
  
  --color-warning: #f59e0b; /* Amber */
  --color-warning-glow: rgba(245, 158, 11, 0.25);

  /* Subject Specific Colors */
  --color-maths: #0ea5e9; /* Sky blue */
  --color-maths-glow: rgba(14, 165, 233, 0.3);
  
  --color-francais: #d946ef; /* Fuchsia */
  --color-francais-glow: rgba(217, 70, 239, 0.3);
  
  --color-histgeo: #f59e0b; /* Amber */
  --color-histgeo-glow: rgba(245, 158, 11, 0.3);

  --color-sciences: #10b981; /* Emerald */
  --color-sciences-glow: rgba(16, 185, 129, 0.3);
  
  /* Shadows & Glassmorphism */
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px 0 var(--color-accent-glow);
  --glass-blur: blur(16px);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* Transition times */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Mode Variables Override */
body.light-mode {
  --bg-app: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.8);
  --border-card: rgba(15, 23, 42, 0.08);
  --border-card-hover: rgba(15, 23, 42, 0.15);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --color-accent: #4f46e5;
  --color-accent-glow: rgba(79, 70, 229, 0.15);
  
  --shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
}

/* -------------------------------------------------------------
   BASE RESET & LAYOUT
------------------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-app);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* -------------------------------------------------------------
   BACKGROUND BLOBS DECORATION
------------------------------------------------------------- */
.bg-blur-blobs {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(120px);
  opacity: 0.25;
  animation: float 20s infinite alternate ease-in-out;
}

body.light-mode .blob {
  opacity: 0.15;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background-color: var(--color-accent);
  top: -100px;
  right: -50px;
  animation-duration: 25s;
}

.blob-2 {
  width: 500px;
  height: 500px;
  background-color: var(--color-maths);
  bottom: -150px;
  left: -150px;
  animation-delay: -5s;
}

.blob-3 {
  width: 300px;
  height: 300px;
  background-color: var(--color-francais);
  top: 40%;
  right: 15%;
  animation-delay: -10s;
}

@keyframes float {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(40px, -60px) scale(1.1);
  }
  100% {
    transform: translate(-20px, 30px) scale(0.95);
  }
}

/* -------------------------------------------------------------
   MAIN CONTAINER
------------------------------------------------------------- */
.app-container {
  width: 100%;
  max-width: 680px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  z-index: 10;
}

/* -------------------------------------------------------------
   HEADER SYSTEM
------------------------------------------------------------- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0 25px;
  border-bottom: 1px solid var(--border-card);
  margin-bottom: 25px;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.logo-icon {
  font-size: 28px;
  transition: transform var(--transition-fast);
}

.logo-container:hover .logo-icon {
  transform: scale(1.15) rotate(5deg);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.gradient-text {
  background: linear-gradient(135deg, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-glow {
  text-shadow: 0 0 25px var(--color-accent-glow);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-logout .logout-icon {
  display: none;
}

/* -------------------------------------------------------------
   SCREEN SYSTEM & ANIMATIONS
------------------------------------------------------------- */
.screen {
  display: none;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  flex-direction: column;
  flex-grow: 1;
}

.screen.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

/* -------------------------------------------------------------
   BUTTON COMPONENT
------------------------------------------------------------- */
.btn {
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background-color: #4f46e5;
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  border-color: var(--border-card);
  color: var(--text-primary);
  backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  border-color: var(--border-card-hover);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: #3b82f6;
  color: #fff;
}

.btn-accent:hover {
  background-color: #2563eb;
  transform: translateY(-2px);
}

.btn-icon-only {
  font-size: 18px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  backdrop-filter: var(--glass-blur);
  aspect-ratio: 1;
}

.btn-icon-only:hover {
  border-color: var(--border-card-hover);
  transform: scale(1.05);
}

.btn-large {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

.btn-full {
  width: 100%;
}

.btn-back {
  background: transparent;
  border: none;
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-back:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  transform: translateX(-4px);
}

.btn-text {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.btn-text:hover {
  color: var(--color-error);
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

/* -------------------------------------------------------------
   WELCOME HERO
------------------------------------------------------------- */
.welcome-hero {
  text-align: center;
  margin-bottom: 35px;
}.welcome-hero h1 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
}

.welcome-hero p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  max-width: 540px;
  margin: 0 auto;
}

/* -------------------------------------------------------------
   SUBJECT SELECTION CARDS
------------------------------------------------------------- */
.subjects-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
}

.subject-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-normal);
  overflow: hidden;
  cursor: pointer;
}

.subject-card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 80%);
  z-index: 1;
  pointer-events: none;
}

.subject-icon {
  font-size: 40px;
  padding: 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: transform var(--transition-normal);
}

.subject-info {
  flex-grow: 1;
  z-index: 2;
}

.subject-info h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.subject-info p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.4;
  margin-bottom: 12px;
}

.subject-stats {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.06);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

body.light-mode .subject-stats {
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.stats-label {
  color: var(--text-secondary);
}

.stats-val {
  font-weight: 700;
  color: var(--text-primary);
}

.card-action-btn {
  align-self: center;
  flex-shrink: 0;
  z-index: 2;
}

/* Hover effects */
.subject-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-card-hover);
  box-shadow: var(--shadow-lg);
}

.subject-card:hover .subject-icon {
  transform: scale(1.1) rotate(-5deg);
}

/* Subject Themes styling overrides */
.card-maths:hover {
  box-shadow: 0 10px 30px -10px var(--color-maths-glow);
  border-color: var(--color-maths);
}
.card-maths .stats-val {
  color: var(--color-maths);
}

.card-francais:hover {
  box-shadow: 0 10px 30px -10px var(--color-francais-glow);
  border-color: var(--color-francais);
}
.card-francais .stats-val {
  color: var(--color-francais);
}

.card-histoire-geo:hover {
  box-shadow: 0 10px 30px -10px var(--color-histgeo-glow);
  border-color: var(--color-histgeo);
}
.card-histoire-geo .stats-val {
  color: var(--color-histgeo);
}

.card-sciences:hover {
  box-shadow: 0 10px 30px -10px var(--color-sciences-glow);
  border-color: var(--color-sciences);
}
.card-sciences .stats-val {
  color: var(--color-sciences);
}

/* Super Quiz Mixte & Confidence Buttons Styling */
.card-mixed {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(217, 70, 239, 0.08)) !important;
  border-color: rgba(99, 102, 241, 0.25) !important;
}
.card-mixed:hover {
  box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.4) !important;
  border-color: #6366f1 !important;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(217, 70, 239, 0.15)) !important;
}
.card-mixed .stats-val {
  color: #a855f7 !important;
}

.confidence-btn {
  transition: all var(--transition-fast) !important;
}
.confidence-btn[data-confidence="low"]:hover {
  background-color: rgba(239, 68, 68, 0.1) !important;
  border-color: var(--color-error) !important;
  color: var(--color-error) !important;
}
.confidence-btn[data-confidence="medium"]:hover {
  background-color: rgba(245, 158, 11, 0.1) !important;
  border-color: var(--color-warning) !important;
  color: var(--color-warning) !important;
}
.confidence-btn[data-confidence="high"]:hover {
  background-color: rgba(16, 185, 129, 0.1) !important;
  border-color: var(--color-success) !important;
  color: var(--color-success) !important;
}

/* -------------------------------------------------------------
   GLOBAL STATS CARD
------------------------------------------------------------- */
.global-stats-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.global-stats-content {
  display: flex;
  width: 100%;
  justify-content: space-around;
}

.stats-block {
  text-align: center;
}

.stats-number {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  display: block;
  margin-bottom: 2px;
}

.stats-title {
  font-size: 12px;
  color: var(--text-secondary);
}

.stats-divider {
  width: 1px;
  background-color: var(--border-card);
  height: 45px;
  align-self: center;
}

/* -------------------------------------------------------------
   QUIZ INTERFACE
------------------------------------------------------------- */
.quiz-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.quiz-progress-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quiz-progress-text {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 600;
  text-align: center;
}

.quiz-progress-steps {
  display: flex;
  gap: 8px;
  width: 100%;
  margin-top: 6px;
}

.progress-step {
  flex: 1;
  height: 10px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.2s ease-in-out;
}

body.light-mode .progress-step {
  background: rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.progress-step.active,
body.light-mode .progress-step.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: scaleY(1.2);
}

.progress-step.correct,
body.light-mode .progress-step.correct {
  background: var(--color-success);
  border-color: var(--color-success);
}

.progress-step.incorrect,
body.light-mode .progress-step.incorrect {
  background: var(--color-error);
  border-color: var(--color-error);
}

.quiz-score-badge {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-card);
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-md);
  color: var(--text-primary);
}

.quiz-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.question-meta {
  display: flex;
  gap: 8px;
}

.category-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--color-accent-glow);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.difficulty-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 4px 0;
}

.id-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 4px 0;
  margin-left: auto;
}

.question-subtitle {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: -6px;
  margin-bottom: -4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.question-text {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
}

/* Options */
.options-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.option-btn {
  font-family: var(--font-primary);
  font-size: 15px;
  font-weight: 500;
  text-align: left;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 12px;
}

.option-btn > span:last-of-type {
  flex-grow: 1;
}

.option-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-card-hover);
  transform: translateX(4px);
}

.option-marker {
  font-weight: 700;
  color: var(--text-muted);
}

/* Correct/Incorrect Option styling on verification */
.option-btn.correct {
  background-color: var(--color-success-glow) !important;
  border-color: var(--color-success) !important;
  color: var(--text-primary) !important;
  font-weight: 600;
}

.option-btn.correct::after {
  content: '✅';
  font-size: 16px;
  margin-left: auto;
  flex-shrink: 0;
}

.option-btn.incorrect {
  background-color: var(--color-error-glow) !important;
  border-color: var(--color-error) !important;
  color: var(--text-primary) !important;
}

.option-btn.incorrect::after {
  content: '❌';
  font-size: 16px;
  margin-left: auto;
  flex-shrink: 0;
}

.option-btn.selected {
  background-color: var(--color-accent-glow) !important;
  border-color: var(--color-accent) !important;
  box-shadow: 0 0 12px var(--color-accent-glow) !important;
  opacity: 1 !important;
}

.option-btn:disabled {
  cursor: default;
  opacity: 0.6;
}

.option-btn.selected:disabled {
  opacity: 1;
}

.option-btn.correct:disabled, .option-btn.incorrect:disabled {
  opacity: 1;
}

/* -------------------------------------------------------------
   COACH CARD (FEEDBACK BOX)
------------------------------------------------------------- */
.coach-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 10px;
  animation: slideUp 0.3s ease-out;
}

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

.coach-header {
  display: flex;
  gap: 12px;
  align-items: center;
}

.coach-avatar {
  font-size: 32px;
}

.coach-header h4 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
}

.feedback-status {
  font-size: 12px;
  font-weight: 600;
}

.feedback-status.status-correct {
  color: var(--color-success);
}

.feedback-status.status-incorrect {
  color: var(--color-error);
}

.coach-body {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.coach-action {
  margin-top: 5px;
}

/* -------------------------------------------------------------
   RESULTS SUMMARY CARD
------------------------------------------------------------- */
.results-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 25px;
  text-align: center;
}

.results-visual {
  position: relative;
  width: 100%;
}

.trophy-icon {
  font-size: 70px;
  margin-bottom: 15px;
  z-index: 2;
  position: relative;
  animation: popTrophy 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes popTrophy {
  from {
    transform: scale(0) rotate(-45deg);
  }
  to {
    transform: scale(1) rotate(0);
  }
}

.trophy-glow {
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -60%);
  z-index: 1;
}

.results-visual h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
}

.results-visual p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Score Circle */
.score-circle {
  width: 130px;
  height: 130px;
  border-radius: var(--radius-full);
  border: 4px solid var(--border-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.2);
  margin: 10px 0;
}

.score-number {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
}

.score-total {
  font-size: 16px;
  color: var(--text-muted);
  font-weight: 700;
}

.badge-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 320px;
}

.badge-item {
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.badge-item.badge-perfect {
  background: rgba(245, 158, 11, 0.15);
  border-color: #f59e0b;
  color: #f59e0b;
}

.badge-item.badge-good {
  background: rgba(16, 185, 129, 0.15);
  border-color: #10b981;
  color: #10b981;
}

.badge-item.badge-validated {
  background: rgba(59, 130, 246, 0.15);
  border-color: #3b82f6;
  color: #60a5fa;
}

.badge-item.badge-trained {
  background: rgba(168, 85, 247, 0.15);
  border-color: #a855f7;
  color: #c084fc;
}

.badge-item.badge-streak_3 {
  background: rgba(249, 115, 22, 0.15);
  border-color: #f97316;
  color: #fb923c;
}

.badge-item.badge-streak_7 {
  background: rgba(239, 68, 68, 0.15);
  border-color: #ef4444;
  color: #f87171;
}

.badge-item.badge-xp_1000 {
  background: rgba(6, 182, 212, 0.15);
  border-color: #06b6d4;
  color: #22d3ee;
}

.badge-item.badge-xp_3000 {
  background: rgba(236, 72, 153, 0.15);
  border-color: #ec4899;
  color: #f472b6;
}

.badge-item.badge-master_maths {
  background: rgba(14, 165, 233, 0.15);
  border-color: #0ea5e9;
  color: #38bdf8;
}

.badge-item.badge-master_francais {
  background: rgba(34, 197, 94, 0.15);
  border-color: #22c55e;
  color: #4ade80;
}

.badge-item.badge-master_histoire_geo {
  background: rgba(234, 179, 8, 0.15);
  border-color: #eab308;
  color: #facc15;
}

.badge-item.badge-master_sciences {
  background: rgba(139, 92, 246, 0.15);
  border-color: #8b5cf6;
  color: #a78bfa;
}


/* Chapters Review Card */
.chapters-review-card {
  width: 100%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 10px 0;
  text-align: left;
  animation: slideUp 0.4s ease-out;
}

body.light-mode .chapters-review-card {
  background: rgba(0, 0, 0, 0.02);
}

.review-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.review-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.review-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.review-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

body.light-mode .review-item {
  background: rgba(255, 255, 255, 0.5);
}

.review-item:hover {
  transform: translateX(4px);
  border-color: var(--border-card-hover);
  background: rgba(255, 255, 255, 0.05);
}

body.light-mode .review-item:hover {
  background: rgba(255, 255, 255, 0.8);
}

.review-item-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.review-item-icon {
  font-size: 14px;
}

.review-item-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
}

.review-item-tip {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  border-left: 2px solid var(--color-error);
  padding-left: 8px;
  margin-left: 22px;
}

.results-actions {
  display: flex;
  gap: 15px;
  width: 100%;
}

.results-actions button {
  flex-grow: 1;
}

/* -------------------------------------------------------------
   FOOTER SYSTEM
------------------------------------------------------------- */
.app-footer {
  text-align: center;
  padding: 25px 0 10px;
  color: var(--text-muted);
  font-size: 12px;
  border-top: 1px solid var(--border-card);
  margin-top: auto;
}

/* -------------------------------------------------------------
   RESPONSIVENESS & PWA ENHANCEMENTS
------------------------------------------------------------- */
@media (max-width: 640px) {
  .btn-logout .logout-text {
    display: none;
  }
  .btn-logout .logout-icon {
    display: inline-block;
    font-size: 16px;
  }
}

@media (max-width: 520px) {
  .app-container {
    padding: 12px;
  }
  .app-header {
    padding: 8px 0 12px;
    margin-bottom: 12px;
  }
  .logo-text {
    font-size: 18px;
  }
  .logo-icon {
    font-size: 20px;
  }
  .header-actions {
    gap: 6px;
  }
  .etoiles-badge, .streak-badge {
    padding: 4px 8px;
    font-size: 12px;
    margin-right: 0 !important;
    flex-shrink: 0;
  }
  .welcome-hero {
    margin-bottom: 16px;
  }
  .welcome-hero h1 {
    font-size: 20px;
    line-height: 1.2;
  }
  .welcome-hero p {
    display: none; /* Cache la longue description sur mobile pour voir les quiz directement */
  }
  .level-progress-card, .global-badges-card, .global-stats-card {
    margin-bottom: 15px;
    padding: 12px 16px;
  }
  .subject-card {
    padding: 16px;
    gap: 15px;
  }
  .subject-icon {
    font-size: 30px;
    padding: 8px;
  }
  .subject-info h3 {
    font-size: 18px;
  }
  .results-actions {
    flex-direction: column;
  }
  .btn-large {
    padding: 12px 20px;
  }
  .btn-logout {
    padding: 8px 10px;
    flex-shrink: 0;
  }
  .quiz-header {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }
  .quiz-progress-container {
    grid-column: 1 / -1;
    width: 100%;
  }
}

/* -------------------------------------------------------------
   MATHEMATICAL FORMULAS STYLING
------------------------------------------------------------- */
.math-formula {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.fraction {
  display: inline-flex;
  flex-direction: column;
  vertical-align: middle;
  text-align: center;
  padding: 0 4px;
  line-height: 1.1;
  position: relative;
  transform: translateY(-2px);
}

.fraction .num {
  border-bottom: 1.5px solid var(--text-primary);
  padding-bottom: 2px;
  font-size: 0.85em;
  font-weight: 700;
}

body.light-mode .fraction .num {
  border-bottom-color: var(--text-primary);
}

.fraction .den {
  padding-top: 2px;
  font-size: 0.85em;
  font-weight: 700;
}

/* Powers (superscript) */
.math-formula sup {
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
  margin-left: 1px;
}

/* -------------------------------------------------------------
   ADMIN PANEL STYLING
------------------------------------------------------------- */
.admin-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
  border-bottom: 1px solid var(--border-card);
  padding-bottom: 15px;
}

.admin-header h2 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
}

.admin-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 25px;
  border-bottom: 1px solid var(--border-card);
  padding-bottom: 10px;
}

.tab-btn {
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 18px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: #fff;
  background: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

.admin-tab-content {
  display: none;
}

.admin-tab-content.active {
  display: block;
}

/* Forms */
.admin-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 24px;
  border-radius: var(--radius-lg);
  backdrop-filter: var(--glass-blur);
  margin-bottom: 25px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.admin-form input[type="text"],
.admin-form select,
.admin-form textarea {
  font-family: var(--font-primary);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.admin-form input:focus,
.admin-form select:focus,
.admin-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent-glow);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

@media (max-width: 480px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* Question list */
.admin-list-filters {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.admin-list-filters select {
  font-family: var(--font-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  backdrop-filter: var(--glass-blur);
}

.questions-count-badge {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  padding: 6px 12px;
  border-radius: var(--radius-full);
}

.admin-questions-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 25px;
  max-height: 500px;
  overflow-y: auto;
  padding-right: 5px;
}

.admin-q-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 18px;
  border-radius: var(--radius-md);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 15px;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-fast);
}

.admin-q-card:hover {
  border-color: var(--border-card-hover);
}

.admin-q-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 75%;
}

.admin-q-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.admin-q-title-row h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
}

.admin-q-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.admin-q-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.btn-small {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-danger {
  background-color: var(--color-error-glow);
  border-color: var(--color-error);
  color: var(--color-error);
}

.btn-danger:hover {
  background-color: var(--color-error);
  color: #fff;
}

.admin-utilities-card {
  background: rgba(239, 68, 68, 0.05);
  border: 1px dashed var(--color-error);
  padding: 20px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 15px;
}

.admin-utilities-card h4 {
  color: var(--color-error);
  font-family: var(--font-display);
  font-weight: 700;
}

.admin-utilities-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* -------------------------------------------------------------
   GAMIFICATION EXTRA STYLES
   ------------------------------------------------------------- */
.streak-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-fast);
  cursor: default;
}

.streak-badge:hover {
  transform: scale(1.05);
  border-color: var(--color-warning);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
}

.streak-badge:hover .streak-icon {
  animation: pulse-fire 0.6s infinite alternate ease-in-out;
}

@keyframes pulse-fire {
  from {
    transform: scale(1);
    filter: drop-shadow(0 0 2px var(--color-warning));
  }
  to {
    transform: scale(1.25) rotate(5deg);
    filter: drop-shadow(0 0 8px #f97316);
  }
}

.etoiles-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-fast);
  cursor: default;
  margin-right: 8px;
}

.etoiles-badge:hover {
  transform: scale(1.05);
  border-color: #fbbf24;
  box-shadow: 0 0 15px rgba(251, 191, 36, 0.2);
}

.etoiles-badge:hover .etoiles-icon {
  animation: pulse-star 0.6s infinite alternate ease-in-out;
}

@keyframes pulse-star {
  from {
    transform: scale(1);
    filter: drop-shadow(0 0 2px rgba(251, 191, 36, 0.5));
  }
  to {
    transform: scale(1.25);
    filter: drop-shadow(0 0 8px #fbbf24);
  }
}


.level-progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  backdrop-filter: var(--glass-blur);
  margin-bottom: 25px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  transition: border-color var(--transition-normal);
}

.level-progress-card:hover {
  border-color: var(--border-card-hover);
}

.level-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.level-badge {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--text-primary);
  background: var(--color-accent-glow);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.xp-ratio {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
}

.level-progress-bar-bg {
  background: rgba(255, 255, 255, 0.05);
  height: 10px;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.02);
}

.level-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent) 0%, #a855f7 100%);
  width: 0%;
  border-radius: var(--radius-full);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.4);
}

.xp-total-text {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-align: right;
}

.xp-gain-display {
  display: flex;
  justify-content: center;
  margin: 10px 0;
  animation: popXp 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.xp-gain-tag {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.15);
  border: 1px solid #fbbf24;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 0 15px rgba(251, 191, 36, 0.2);
}

@keyframes popXp {
  0% {
    transform: scale(0.6);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* -------------------------------------------------------------
   CUSTOM MODALS & POP-OVERS
   ------------------------------------------------------------- */

/* Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
  opacity: 1;
  transition: opacity var(--transition-normal);
}

.modal-overlay.hidden {
  display: none !important;
}

/* Modal Box */
.modal-container {
  background: var(--bg-card);
  border: 1px solid var(--border-card-hover);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 440px;
  padding: 28px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), var(--shadow-glow);
  transform: scale(1);
  transition: transform var(--transition-normal);
  animation: modalScaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalScaleUp {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.modal-icon {
  font-size: 28px;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
}

.modal-body {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.modal-actions .btn {
  min-width: 100px;
}

/* Popover / Tooltip Container */
.app-popover {
  position: absolute;
  z-index: 1500;
  background: rgba(17, 24, 39, 0.95);
  border: 1px solid var(--border-card-hover);
  border-radius: var(--radius-md);
  padding: 16px;
  width: 280px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: blur(8px);
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-primary);
  animation: popoverFadeIn 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  pointer-events: none;
}

body.light-mode .app-popover {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.15);
}

@keyframes popoverFadeIn {
  from {
    transform: scale(0.95) translateY(5px);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

.app-popover.hidden {
  display: none !important;
}

/* Popover Content Styling */
.popover-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.popover-text {
  color: var(--text-secondary);
}

.popover-highlight {
  color: var(--color-warning);
  font-weight: 600;
}

/* Popover Arrow */
.popover-arrow {
  position: absolute;
  width: 8px;
  height: 8px;
  background: rgba(17, 24, 39, 0.95);
  border-left: 1px solid var(--border-card-hover);
  border-top: 1px solid var(--border-card-hover);
  transform: rotate(45deg);
}

body.light-mode .popover-arrow {
  background: rgba(255, 255, 255, 0.95);
}

/* Global Badges Showcase Card */
.global-badges-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  backdrop-filter: var(--glass-blur);
  margin-bottom: 25px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  transition: border-color var(--transition-normal);
}

.global-badges-card:hover {
  border-color: var(--border-card-hover);
}

/* Locked Badge Item */
.badge-item.locked {
  background: rgba(255, 255, 255, 0.03) !important;
  border-color: rgba(255, 255, 255, 0.05) !important;
  color: var(--text-muted) !important;
  filter: grayscale(100%);
  opacity: 0.35;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.badge-item.locked:hover {
  opacity: 0.6;
}

body.light-mode .badge-item.locked {
  background: rgba(0, 0, 0, 0.03) !important;
  border-color: rgba(0, 0, 0, 0.05) !important;
  color: rgba(15, 23, 42, 0.4) !important;
}

/* Active Quiz target level badge */
.quiz-target-level-badge {
  display: inline-block;
  vertical-align: middle;
}
body.light-mode .quiz-target-level-badge {
  background: rgba(15, 23, 42, 0.08) !important;
  border-color: rgba(15, 23, 42, 0.05) !important;
  color: var(--text-secondary);
}

/* -------------------------------------------------------------
   SRS DUE BANNER
------------------------------------------------------------- */
.srs-due-banner {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(59, 130, 246, 0.12));
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  margin-bottom: 22px;
  backdrop-filter: var(--glass-blur);
  animation: srs-pulse-border 3s ease-in-out infinite;
}

@keyframes srs-pulse-border {
  0%, 100% { border-color: rgba(99, 102, 241, 0.35); box-shadow: none; }
  50% { border-color: rgba(99, 102, 241, 0.6); box-shadow: 0 0 20px rgba(99, 102, 241, 0.18); }
}

.srs-due-inner {
  display: flex;
  align-items: center;
  gap: 14px;
}

.srs-due-icon {
  font-size: 28px;
  flex-shrink: 0;
  animation: float 4s ease-in-out infinite alternate;
}

.srs-due-text {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.srs-due-text strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.srs-due-sub {
  font-size: 12px;
  color: var(--text-secondary);
}

.srs-due-btn {
  flex-shrink: 0;
  font-size: 13px !important;
  padding: 8px 16px !important;
  border-radius: var(--radius-md) !important;
  background: linear-gradient(135deg, #6366f1, #3b82f6) !important;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.35) !important;
  border: none !important;
  white-space: nowrap;
}

.srs-due-btn:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.5) !important;
}

body.light-mode .srs-due-banner {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(59, 130, 246, 0.06));
}

/* -------------------------------------------------------------
   CHAPTER REVISION ENTRY BUTTON
------------------------------------------------------------- */
.btn-chapters-entry {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: all var(--transition-normal);
  backdrop-filter: var(--glass-blur);
  text-align: left;
  margin-bottom: 22px;
}

.btn-chapters-entry:hover {
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, 0.06);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
}

.btn-chapters-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.btn-chapters-text {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.btn-chapters-text strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-display);
}

.btn-chapters-text span {
  font-size: 13px;
  color: var(--text-secondary);
}

.btn-chapters-arrow {
  font-size: 24px;
  color: var(--color-accent);
  font-weight: 300;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.btn-chapters-entry:hover .btn-chapters-arrow {
  transform: translateX(4px);
}

/* -------------------------------------------------------------
   CHAPTERS SCREEN
------------------------------------------------------------- */
.chapters-screen-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-card);
}

.chapters-screen-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

/* Subject Filter Tabs */
.chapters-subject-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.chapters-subject-tabs::-webkit-scrollbar {
  display: none;
}

.chapter-tab {
  font-family: var(--font-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  backdrop-filter: var(--glass-blur);
}

.chapter-tab:hover {
  border-color: var(--border-card-hover);
  color: var(--text-primary);
}

.chapter-tab.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 0 14px var(--color-accent-glow);
}

/* Search Input */
.chapters-search-wrapper {
  margin-bottom: 16px;
}

.chapters-search-input {
  width: 100%;
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  color: var(--text-primary);
  backdrop-filter: var(--glass-blur);
  outline: none;
  transition: all var(--transition-fast);
}

.chapters-search-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.chapters-search-input::placeholder {
  color: var(--text-muted);
}

/* Chapters List */
.chapters-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 20px;
}

/* Chapter Card */
.chapter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: var(--glass-blur);
}

.chapter-card:hover {
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, 0.05);
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.12);
}

.chapter-card-left {
  flex-grow: 1;
  min-width: 0;
}

.chapter-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-display);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chapter-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.chapter-diff-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.chapter-q-count {
  font-size: 12px;
  color: var(--text-muted);
}

.chapter-due-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.25);
  animation: srs-pulse-border 2s ease-in-out infinite;
}

.chapter-card-right {
  flex-shrink: 0;
}

.chapter-card-arrow {
  font-size: 22px;
  color: var(--text-muted);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.chapter-card:hover .chapter-card-arrow {
  transform: translateX(4px);
  color: var(--color-accent);
}

/* Empty state */
.chapters-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.chapters-empty span {
  font-size: 36px;
}

.chapters-empty p {
  font-size: 15px;
}

/* Hint Styling */
.hint-wrapper {
  margin-top: 12px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.btn-hint-toggle {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border: 1px dashed rgba(245, 158, 11, 0.3);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-hint-toggle:hover {
  background: rgba(245, 158, 11, 0.2);
  border-color: #f59e0b;
  transform: translateY(-1px);
}

.hint-content-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(245, 158, 11, 0.08);
  border-left: 4px solid #f59e0b;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
  width: 100%;
  box-sizing: border-box;
  animation: fadeIn var(--transition-fast) forwards;
}

.hint-avatar {
  font-size: 18px;
}

#hint-text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0;
}

/* -------------------------------------------------------------
   SUBJECT DASHBOARD (ESPACE MATIÈRE) STYLES
   ------------------------------------------------------------- */
.subject-dashboard-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-card);
}

.subject-dashboard-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

/* Diagnostic Banner */
.diagnostic-banner {
  display: flex;
  align-items: center;
  gap: 20px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(59, 130, 246, 0.1));
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 25px;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-normal);
}

.diagnostic-banner.completed {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(5, 150, 105, 0.06));
  border-color: rgba(16, 185, 129, 0.3);
}

.diagnostic-banner-icon {
  font-size: 36px;
  flex-shrink: 0;
}

.diagnostic-banner-info {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.diagnostic-banner-info h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.diagnostic-banner-info p {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

.diagnostic-btn {
  white-space: nowrap;
  flex-shrink: 0;
}

/* Skills Dashboard Card */
.skills-dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: var(--glass-blur);
  margin-bottom: 25px;
}

.skills-dashboard-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 6px;
}

.skills-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Skill Item styling */
.skill-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

body.light-mode .skill-item {
  background: rgba(255, 255, 255, 0.4);
}

.skill-item:hover {
  transform: translateX(4px);
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, 0.04);
}

.skill-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-grow: 1;
}

.skill-title {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-progress-container {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 150px;
}

.skill-progress-bar-bg {
  background: rgba(255, 255, 255, 0.05);
  height: 6px;
  border-radius: var(--radius-full);
  flex-grow: 1;
  overflow: hidden;
}

body.light-mode .skill-progress-bar-bg {
  background: rgba(0, 0, 0, 0.05);
}

.skill-progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
}

.skill-pct {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  width: 30px;
  text-align: right;
}

/* Skill status pill colors */
.skill-status-pill {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.skill-status-pill.status-red {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.skill-status-pill.status-yellow {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.skill-status-pill.status-green {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

/* Course Viewer Card */
.course-viewer-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card-hover);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 25px;
  animation: slideUp var(--transition-normal) ease-out;
  box-shadow: var(--shadow-lg), 0 0 20px rgba(99, 102, 241, 0.1);
  backdrop-filter: var(--glass-blur);
}

.course-viewer-card.hidden {
  display: none !important;
}

.course-viewer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-card);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.course-viewer-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.course-viewer-body {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  max-height: 400px;
  overflow-y: auto;
  padding-right: 8px;
  margin-bottom: 20px;
}

.course-viewer-body h4 {
  font-family: var(--font-display);
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 700;
  margin-top: 18px;
  margin-bottom: 8px;
}

.course-viewer-body ul, .course-viewer-body ol {
  padding-left: 20px;
  margin-bottom: 14px;
}

.course-viewer-body li {
  margin-bottom: 6px;
}

.course-viewer-body strong {
  color: var(--text-primary);
}

.course-viewer-actions {
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 520px) {
  .diagnostic-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
    gap: 12px;
  }
  .diagnostic-btn {
    width: 100%;
  }
  .skill-progress-container {
    display: none; /* Hide progress bar on mobile to fit elements */
  }
}

/* Daily Quests Styling */
.daily-mission-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  backdrop-filter: var(--glass-blur);
  margin-bottom: 25px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color var(--transition-normal);
}

.daily-mission-card:hover {
  border-color: var(--border-card-hover);
}

.daily-mission-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.daily-mission-header h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.daily-mission-badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-glow);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.daily-quests-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.daily-quest-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

body.light-mode .daily-quest-item {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.04);
}

.daily-quest-item.completed {
  opacity: 0.65;
  background: rgba(16, 185, 129, 0.05);
  border-color: rgba(16, 185, 129, 0.2);
}

.daily-quest-item.completed .quest-text {
  text-decoration: line-through;
  color: var(--text-muted);
}

.quest-checkbox {
  font-size: 16px;
  flex-shrink: 0;
}

.quest-text {
  flex-grow: 1;
  font-weight: 500;
}

.quest-action-btn {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quest-action-btn:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-1px);
}

.daily-quest-item.completed .quest-action-btn {
  display: none;
}

.smart-adventure-btn {
  background: linear-gradient(135deg, var(--color-accent), #3b82f6) !important;
  color: #fff !important;
  font-weight: 800;
  font-size: 15px;
  border: none !important;
  padding: 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  transition: all var(--transition-normal);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.smart-adventure-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45), 0 0 12px rgba(59, 130, 246, 0.3);
}

/* Grimoire Specific Styling */
.grimoire-entry-btn {
  border-color: var(--color-accent-glow) !important;
}
.grimoire-entry-btn:hover {
  border-color: #a855f7 !important;
  background: rgba(168, 85, 247, 0.06) !important;
  box-shadow: 0 8px 24px rgba(168, 85, 247, 0.15) !important;
}

.grimoire-q-card {
  background: var(--bg-card);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 15px;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-fast);
}

.grimoire-q-card:hover {
  border-color: rgba(168, 85, 247, 0.4);
}

.grimoire-q-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 80%;
}

.grimoire-q-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  color: #a855f7;
  text-transform: uppercase;
}

.grimoire-q-text {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.4;
}

.grimoire-q-coach {
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--color-warning);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.grimoire-q-purify-count {
  font-size: 10px;
  font-weight: 800;
  background: var(--color-accent-glow);
  color: var(--color-accent);
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

/* Toggle Switch styling */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  transition: .4s;
  border: 1px solid var(--border-card);
}

body.light-mode .slider {
  background-color: rgba(0, 0, 0, 0.05);
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: #fff;
  transition: .4s;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

body.light-mode .slider:before {
  background-color: #fff;
}

input:checked + .slider {
  background-color: var(--color-accent);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

.slider.round {
  border-radius: 24px;
}

.slider.round:before {
  border-radius: 50%;
}

/* Combo and Companion Styles */
.combo-alert-container {
  position: absolute;
  top: 15px;
  right: 15px;
  background: linear-gradient(135deg, #f97316, #ef4444);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
  z-index: 100;
  pointer-events: none;
}

.combo-alert-container.animate {
  animation: slideInAndPulse 1.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes slideInAndPulse {
  0% { transform: translate(30px, -10px) scale(0.6); opacity: 0; }
  15% { transform: translate(0, 0) scale(1.15); opacity: 1; }
  30% { transform: scale(1); }
  85% { transform: scale(1); opacity: 1; }
  100% { transform: translateY(-30px) scale(0.9); opacity: 0; }
}

/* Companion Mascot Styles */
.companion-avatar-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(99, 102, 241, 0.15));
  border: 2px solid rgba(168, 85, 247, 0.3);
  border-radius: var(--radius-full);
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.2);
  flex-shrink: 0;
  transition: all var(--transition-normal);
}

.user-profile-card:hover .companion-avatar-container {
  border-color: var(--color-accent);
  box-shadow: 0 0 25px rgba(168, 85, 247, 0.4);
  transform: scale(1.05);
}

#companion-avatar {
  font-size: 38px;
  line-height: 1;
  display: inline-block;
  animation: companion-float 3s ease-in-out infinite;
}

.companion-level-badge {
  position: absolute;
  bottom: -4px;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--bg-card);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

body.light-mode .companion-level-badge {
  border-color: #fff;
}

@keyframes companion-float {
  0% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-5px) scale(1.03);
    filter: drop-shadow(0 5px 8px rgba(168, 85, 247, 0.3));
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

/* User Profile Card (Merged Companion + XP) */
.user-profile-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  backdrop-filter: var(--glass-blur);
  margin-bottom: 25px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 20px;
  transition: border-color var(--transition-normal);
}

.user-profile-card:hover {
  border-color: var(--color-accent);
}

.user-profile-info {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.profile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.profile-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.profile-subtitle {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.profile-status {
  font-size: 12px;
  color: var(--text-secondary);
  margin: 0;
  font-style: italic;
  line-height: 1.4;
}

body.light-mode .user-profile-card {
  background: #fff;
}

/* Adjust card content spacings */
.subjects-grid .subject-card p {
  margin-bottom: 4px;
}

.card-grimoire:hover {
  border-color: #a855f7 !important;
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.2) !important;
}

.card-grimoire .subject-icon {
  background: rgba(168, 85, 247, 0.1) !important;
  color: #c084fc !important;
  border: 1px solid rgba(168, 85, 247, 0.2) !important;
}

/* Accordion styling for stats & badges */
.stats-badges-accordion {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  margin-bottom: 25px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.stats-badges-accordion:hover {
  border-color: var(--border-card-hover);
}

.accordion-trigger {
  width: 100%;
  background: transparent;
  border: none;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  outline: none;
  transition: background var(--transition-fast);
}

.accordion-trigger:hover {
  background: rgba(255, 255, 255, 0.02);
}

body.light-mode .accordion-trigger:hover {
  background: rgba(0, 0, 0, 0.02);
}

.accordion-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--text-primary);
}

.accordion-icon {
  font-size: 12px;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
}

.accordion-content {
  padding: 0 20px 20px 20px;
  border-top: 1px solid var(--border-card);
}

.accordion-content.hidden {
  display: none !important;
}

.accordion-inner-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  margin-top: 16px;
}

@media (max-width: 768px) {
  .accordion-inner-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

.global-stats-card-inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.global-badges-card-inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* =============================================================
   QUESTION VISUALS — SVG Diagrams, Scratch Blocks, pH Scale
   ============================================================= */

/* --- Common container --- */
.question-visual {
  margin: 14px auto 18px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.question-visual svg {
  width: 100%;
  max-width: 300px;
  height: auto;
  overflow: visible;
}

/* SVG geometry text labels */
.geo-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  fill: var(--text-primary);
}
.geo-label-sm {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  fill: var(--text-secondary);
}
.geo-accent {
  fill: none;
  stroke: #6366f1;
  stroke-width: 2;
  stroke-linecap: round;
}
.geo-fill-accent {
  fill: rgba(99, 102, 241, 0.1);
  stroke: #6366f1;
  stroke-width: 2;
}
.geo-line-thin {
  fill: none;
  stroke: #6366f1;
  stroke-width: 1.5;
  stroke-dasharray: 5 3;
}
.geo-right-angle {
  fill: none;
  stroke: #6366f1;
  stroke-width: 1.5;
}

/* dark/light SVG text adaptation */
body.light-mode .geo-label { fill: #1e293b; }
body.light-mode .geo-label-sm { fill: #64748b; }

/* --- Scratch blocks --- */
.scratch-script {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  margin: 14px auto 18px;
  padding: 10px 12px;
  background: #1a1b2e;
  border-radius: 10px;
  font-family: 'Outfit', 'Courier New', monospace;
  font-size: 12.5px;
  min-width: 220px;
  max-width: 300px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

body.light-mode .scratch-script {
  background: #22253a;
}

.scratch-block {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px 6px 12px;
  border-radius: 5px;
  color: #fff;
  font-weight: 600;
  font-size: 12px;
  white-space: nowrap;
  line-height: 1.4;
  width: 100%;
  box-sizing: border-box;
  position: relative;
}

/* Puzzle notch top */
.scratch-block::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 18px;
  width: 14px;
  height: 4px;
  background: inherit;
  border-radius: 2px 2px 0 0;
  filter: brightness(0.85);
}

.scratch-hat {
  border-radius: 14px 14px 5px 5px;
  padding-top: 9px;
}
.scratch-hat::before { display: none; }

.scratch-indent {
  margin-left: 20px;
  width: calc(100% - 20px);
}

.scratch-inner {
  margin-left: 28px;
  width: calc(100% - 28px);
  opacity: 0.95;
}

/* Block color palette */
.sb-event    { background: #c6a000; }
.sb-motion   { background: #4c97ff; }
.sb-variable { background: #ff8c1a; }
.sb-control  { background: #ffab19; }
.sb-operator { background: #59c059; }
.sb-looks    { background: #9966ff; }
.sb-sound    { background: #d65cd6; }

/* Value pills inside blocks */
.sb-val {
  background: rgba(255,255,255,0.25);
  border-radius: 3px;
  padding: 1px 6px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

/* --- pH Scale --- */
.ph-scale-container {
  margin: 14px auto 18px;
  max-width: 300px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.ph-bar {
  width: 100%;
  height: 22px;
  border-radius: 999px;
  background: linear-gradient(to right,
    #ef4444 0%,
    #f97316 14%,
    #eab308 28%,
    #84cc16 42%,
    #22c55e 50%,
    #3b82f6 65%,
    #6366f1 80%,
    #9333ea 100%
  );
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
  position: relative;
}

.ph-labels {
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
}

.ph-categories {
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
}

.ph-cat-acid   { color: #ef4444; }
.ph-cat-neutre { color: #22c55e; text-align: center; flex: 1; }
.ph-cat-base   { color: #9333ea; text-align: right; }

/* --- Neuron schematic (SVG-based) --- */
.neuron-visual {
  margin: 14px auto 18px;
  max-width: 300px;
  width: 100%;
}
.neuron-visual svg {
  width: 100%;
  height: auto;
}

/* -------------------------------------------------------------
   BREVET QUEST LANDING PAGE STYLES
   ------------------------------------------------------------- */

.hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  background: var(--color-accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-actions-container {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 25px;
  flex-wrap: wrap;
}

.hero-actions-container a {
  text-decoration: none;
}

.landing-section-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 8px;
}

.section-title-wrapper {
  margin-top: 40px;
  margin-bottom: 25px;
  text-align: center;
}

.section-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 450px;
  margin: 0 auto;
}

.card-glow-layer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.team-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
  backdrop-filter: var(--glass-blur);
}

.feature-icon {
  font-size: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-text {
  flex: 1;
}

.feature-text h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-text p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.emphasis-box {
  margin-top: 15px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.emphasis-icon {
  font-size: 18px;
}

.emphasis-box p {
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.5;
  margin: 0;
}

/* Method Grid */
.method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.method-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 20px;
  border-radius: var(--radius-md);
  position: relative;
  backdrop-filter: var(--glass-blur);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.method-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-card-hover);
}

.method-num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(192, 132, 252, 0.2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: absolute;
  right: 20px;
  top: 15px;
}

.method-card h4 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.method-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* CESU Info */
.cesu-info-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(59, 130, 246, 0.08));
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 25px;
  text-align: center;
  backdrop-filter: var(--glass-blur);
}

.cesu-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  background: #10b981;
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.cesu-info-card h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.cesu-info-card p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 550px;
  margin: 0 auto;
}

/* Tarifs Cards */
.tarifs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.tarif-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  backdrop-filter: var(--glass-blur);
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.tarif-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-card-hover);
}

.tarif-card.popular {
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, 0.04);
  box-shadow: 0 10px 30px -10px var(--color-accent-glow);
}

.popular-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tarif-header {
  text-align: center;
  border-bottom: 1px solid var(--border-card);
  padding-bottom: 15px;
  margin-bottom: 15px;
}

.tarif-duration {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.tarif-price {
  display: block;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.tarif-original {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
}

.tarif-features {
  list-style: none;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tarif-features li {
  position: relative;
  padding-left: 18px;
}

.tarif-features li::before {
  content: "✓";
  color: #10b981;
  font-weight: 800;
  position: absolute;
  left: 0;
}

/* Sectors */
.sectors-badges-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 30px;
}

.sector-tag {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-full);
  color: var(--text-primary);
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-fast);
}

.sector-tag:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-glow);
  transform: scale(1.05);
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 15px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-primary);
  font-size: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
}

.contact-success-message {
  text-align: center;
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.success-icon {
  font-size: 40px;
}

.contact-success-message h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-success);
}

.contact-success-message p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.5;
}

/* Responsive tweaks */
@media (max-width: 580px) {
  .method-grid {
    grid-template-columns: 1fr;
  }
  .tarifs-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Honeypot field styling to hide it from human users */
.form-group-hp {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  position: absolute !important;
  left: -9999px !important;
  top: -9999px !important;
  width: 0 !important;
  height: 0 !important;
  overflow: hidden !important;
  z-index: -1000 !important;
}