/* =========================================
   1. RESET & VARIABLES
   ========================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* --- Couleurs issues de la charte --- */
  --color-bg-light: #EDCDAD;
  --color-primary: #EA0309;
  --color-dark: #1A1A1A;
  --color-white: #FFFFFF;
  --color-accent-yellow: #FFD700; /* Utilisé pour l'aura Super Saiyan */
  --color-accent-red: #D6000D;
  --color-energy-blue: #4E2BFF;
  --color-bck-card: #efdac6;
  
  /* --- Divers --- */
  --color-text: #1A1A1A;
  --color-border: #D6000D;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg-light);
  color: var(--color-text);
  font-family: "Roboto", "Oxygen", "Ubuntu", "Segoe UI", "Cantarell", sans-serif;
  line-height: 1.6;
}

h1, h2, h3 {
  color: var(--color-primary);
  text-transform: uppercase;
  font-weight: 900;
  letter-spacing: 2px;
  text-shadow: 0 0 10px rgba(78, 43, 255, 0.3);
}

/* =========================================
   2. HEADER & NAVIGATION (Sparking Zero Style)
   ========================================= */
.header {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.nav-toggle-checkbox {
  display: none;
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(5px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  z-index: 900;
}

.main-nav {
  position: fixed;
  top: 0;
  right: -300px;
  width: 280px;
  height: 100vh;
  background: #1a1a1a;
  border-left: 3px solid var(--color-primary);
  padding: 4rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: right 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  z-index: 1000;
}

.main-nav h3 {
  color: var(--color-accent-yellow);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.main-nav a {
  text-decoration: none;
  color: #f5f5f5;
  font-weight: 600;
  font-size: 1.1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent-yellow);
  text-shadow: 0 0 10px var(--color-accent-yellow);
  transform: translateX(5px);
  border-left: 3px solid var(--color-primary);
  padding-left: 10px;
}

.nav-close-btn {
  margin-top: 2rem;
  color: var(--color-primary);
  font-weight: 700;
  cursor: pointer;
  transition: color 0.3s ease;
}
.nav-close-btn:hover { color: var(--color-accent-yellow); }

.header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  background: #0d0d0d;
  border-bottom: 2px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 950;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.logo-toggle { 
  cursor: pointer; 
  display: flex; 
  align-items: center; 
  gap: 0.75rem; 
}
.logo-img {
  width: 45px;
  height: 45px;
  object-fit: contain;
  transition: transform 0.3s ease;
}
.logo-toggle:hover .logo-img { transform: scale(1.1) rotate(-5deg); }

.logo-title {
  font-size: 1.8rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-weight: 900;
  margin: 0;
}

.logo-menu-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.3s ease;
  user-select: none; 
}

.logo-toggle:hover .logo-menu-text {
  color: var(--color-bg-light);
}

.nav-toggle-checkbox:checked ~ .nav-overlay { opacity: 1; visibility: visible; }
.nav-toggle-checkbox:checked ~ .main-nav { right: 0; }

/* =========================================
   3. COMPOSANTS UI & ANIMATIONS
   ========================================= */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: 4px;
  font-weight: 700;
  transition: all 0.25s ease-in-out;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 153, 255, 0.3);
}
.btn-primary { background-color: var(--color-primary); color: var(--color-white); }
.btn-primary:hover {
  background: var(--color-accent-yellow);
  color: var(--color-dark);
  box-shadow: 0 0 20px var(--color-accent-yellow);
}
.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-secondary:hover { background-color: var(--color-primary); color: var(--color-white); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--color-primary);
  color: var(--color-white);
  width: 45px;
  height: 45px;
  text-align: center;
  line-height: 45px;
  border-radius: 50%;
  font-size: 1.5rem;
  text-decoration: none;
  z-index: 990;
  opacity: 0.7;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}
.back-to-top:hover {
  opacity: 1;
  transform: translateY(-5px);
  background-color: var(--color-accent-yellow);
  color: var(--color-dark);
}

/* =========================================
   4. SECTIONS & HERO
   ========================================= */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}
.content { padding: var(--spacing-lg) 0; }

.hero {
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-dark) 0%, #1a1a2e 100%);
  border-radius: 8px;
  margin: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 153, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: drift 20s linear infinite;
}
@keyframes drift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

.page-hero {
  text-align: center;
  padding: var(--spacing-xl) 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}
.page-hero h1 { font-size: 3rem; color: var(--color-dark); letter-spacing: 2px; }

.video-container {
  position: relative;
  padding-bottom: 56.25%; 
  height: 0;
  overflow: hidden;
  max-width: 100%;
  background: #000; 
  border-radius: 8px; 
  margin: var(--spacing-xl) 0;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* =========================================
   5. NOUVEAU CARROUSEL (Scroll Snap + Experimental)
   ========================================= */
.carousel-container {
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  border-radius: 8px;
  margin: var(--spacing-xl) 0;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.carousel {
  width: 100%;
  height: 100%;
  overflow-x: auto;
  margin: 0 auto; /* Centré */
  display: flex;
  gap: 1em;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  
  /* --- Experimental (comme demandé) --- */
  anchor-name: --carousel; 
  
  /* Masque la barre de défilement */
  scrollbar-width: none; /* Firefox */
}
.carousel::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

/* Styles pour les IMAGES (adaptés de votre .card) */
.carousel img {
  scroll-snap-align: center;
  flex: 0 0 20em;
  aspect-ratio: 5/3;
  background-color: var(--color-dark);
  padding: 1em; /* Note: le padding sur <img> n'est pas standard, mais conservé de votre code */
  border-radius: 1em; /* Corrigé (5em était très grand) */
  text-align: center;
  align-content: center;
  height: 100%;
  object-fit: cover;
}

/* --- Experimental Scroll Markers (comme demandé) --- */
.carousel::scroll-marker-group {
  display: flex;
  justify-content: center;
  gap: .5em;
}

.carousel img::scroll-marker {
  content: '';
  height: 1em;
  width: 1em;
  background-color: var(--color-primary); /* Variable corrigée */
  border-radius: 50%; /* Typo corrigée */
}

.carousel img::scroll-marker:target-current {
  background-color: var(--color-accent-yellow); /* Variable corrigée (brand-color -> accent-yellow) */
}

/* --- Experimental Scroll Buttons (comme demandé) --- */
.carousel::scroll-button(right), 
.carousel::scroll-button(left) {
  content: '>'; /* Remplacé 'Right' par un symbole */
  border: none;
  background-color: var(--color-primary); /* Variable corrigée */
  font-family: consolas, monospace;
  font-size: 2.5rem; /* Typo corrigée (3rm -> 2.5rem) */
  color: white;
  height: 60px;
  width: 60px;
  border-radius: 50%;
  padding-bottom: .1em;
  cursor: pointer;
  position: fixed;
  position-anchor: --carousel;
  position-area: right center;
  translate: 50%; /* Ajusté pour être à l'extérieur */
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.carousel::scroll-button(left) {
  content: '<'; /* Remplacé 'Left' par un symbole */
  position-area: left center;
  translate: -50%; /* Ajusté pour être à l'extérieur */
}

.carousel::scroll-button(right):disabled, 
.carousel::scroll-button(left):disabled {
  opacity: 0.2; /* Opacité réduite de 0.5 à 0.2 */
  cursor: auto;
}

/* Overlay (conservé de l'ancien carrousel) */
.carousel-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,13,13,0.5) 0%, rgba(26,26,46,0.4) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 10;
  color: var(--color-white);
  pointer-events: none;
}
.carousel-overlay > * { pointer-events: auto; }

.carousel-overlay h1 {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 4px 20px rgba(0,153,255,0.3);
}

.carousel-dots { display: none; }

/* =========================================
   6. CARTES & GRILLES
   ========================================= */
.section-block {
  background-color: var(--color-bck-card);
  border-left: 5px solid var(--color-primary);
  border-radius: 6px;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}
.section-block h2 {
  font-size: 2rem;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-md);
}

.features, .controls-grid, .systems, .timeline, .attacks-grid, .arenas-grid, .characters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.feature-card, .control-item, .system-item, .timeline-item, .attack-card, .arena-card {
  background: var(--color-bck-card);
  padding: var(--spacing-lg);
  border-radius: 8px;
  transition: all 0.3s ease;
}
.feature-card { border-left: 4px solid var(--color-primary); }
.control-item { border-top: 3px solid var(--color-accent-yellow); }
.system-item { border-left: 3px solid var(--color-primary); background: linear-gradient(135deg, rgba(0, 153, 255, 0.05) 0%, rgba(255, 102, 0, 0.05) 100%); }
.timeline-item { border-top: 4px solid var(--color-primary); }
.attack-card, .arena-card { border-left: 4px solid var(--color-accent-red); border: 2px solid var(--color-border); }

.feature-card:hover, .timeline-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 153, 255, 0.1);
}
.attack-card:hover, .arena-card:hover {
  border-left-color: var(--color-primary);
  box-shadow: 0 8px 25px rgba(255, 102, 0, 0.15);
  transform: translateX(5px);
}

.character-card {
  background: var(--color-bck-card);
  padding: var(--spacing-lg);
  border-radius: 8px;
  border: 2px solid var(--color-border);
  opacity: 0;
  animation: fadeUp 0.8s ease forwards;
}
.character-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 25px rgba(0, 153, 255, 0.15);
  transform: translateY(-5px);
}
.char-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary);
}

.new-item { position: relative; overflow: hidden; }
.new-item::after {
  content: "NOUVEAU";
  position: absolute;
  top: 10px; right: -30px;
  background: var(--color-accent-yellow);
  color: var(--color-dark);
  font-size: 0.7rem;
  font-weight: bold;
  padding: 5px 30px;
  transform: rotate(45deg);
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.tips-list li {
  list-style: none;
  padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
  border-left: 3px solid var(--color-primary);
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-left: var(--spacing-lg);
}
.tips-list li::before {
  content: "▸";
  position: absolute;
  left: var(--spacing-xs);
  color: var(--color-primary);
  font-weight: bold;
}

.cta {
  background: linear-gradient(135deg, var(--color-dark) 0%, #1a1a2e 100%);
  color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: 8px;
  text-align: center;
  margin: var(--spacing-xl) 0;
}
.cta-links { display: flex; gap: var(--spacing-md); justify-content: center; flex-wrap: wrap; margin-top: var(--spacing-lg); }

.footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-lg) 0;
  border-top: 4px solid var(--color-primary);
  text-align: center;
  margin-top: var(--spacing-xl);
}
.footer a { color: var(--color-primary); text-decoration: none; }
.footer a:hover { color: var(--color-accent-yellow); }

/* =========================================
   7. RESPONSIVE (Corrigé avec breakpoint Tablette)
   ========================================= */

/* NOUVEAU : Breakpoint pour Tablettes (iPad Pro/Air en portrait) */
@media (max-width: 1024px) {
  /* On ajuste les polices et tailles, mais on garde les grilles multi-colonnes */
  .carousel-container { height: 400px; }
  .carousel-overlay h1 { font-size: 3rem; }
  .page-hero h1 { font-size: 2.5rem; }
  .logo-title { font-size: 1.5rem; }

  /* On ajuste la largeur des cartes du carrousel pour la tablette */
  .carousel img {
    flex: 0 0 25em; /* Un peu plus large que la base (20em) */
  }
}

/* Breakpoint Mobile (Smartphones et iPad Mini portrait) */
@media (max-width: 768px) {
  .carousel-container { height: 350px; }
  .carousel-overlay h1 { font-size: 2.5rem; }
  .page-hero h1 { font-size: 2rem; }
  
  /* Le menu passe en plein écran */
  .main-nav { 
    width: 100%; 
    right: -100%; 
  }
  .logo-title { font-size: 1.4rem; }
  
  /* Les grilles passent en 1 colonne */
  .features, .controls-grid, .systems, .timeline, .attacks-grid, .arenas-grid, .characters-grid {
    grid-template-columns: 1fr;
  }
}

/* Breakpoint Petit Mobile (Conserve la règle du carrousel de votre code) */
@media(max-width: 500px) {
  .carousel img {
    flex: 0 0 100%; /* Les images prennent 100% de la largeur */
  }

  /* On cache le mot "MENU" pour ne garder que l'icône sur les très petits écrans */
  .logo-menu-text {
    display: none;
  }
  .logo-title {
    font-size: 1.2rem;
  }
}