* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  overflow-x: hidden;
  line-height: 1.6;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
  background: rgba(75, 20, 140, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-direction: row-reverse; /* Inverse l'ordre : nav puis logo */
}

header nav {
  display: flex;
  align-items: center;
  margin-right: auto; /* Changé de margin-left à margin-right */
}

header.scrolled {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

header.scrolled .nav-container {
  padding: 10px 40px;
  background: rgba(75, 20, 140, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

header .logo {
  font-size: 28px;
  font-weight: bold;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
  background-size: 300% 300%;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

main {
  margin-top: 80px;
  padding: 40px 20px;
  min-height: calc(100vh - 80px);
}

/* Navigation simple sans effets */
header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 20px;
}

header nav ul li a {
  text-decoration: none;
  color: white;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  font-weight: 500;
  font-size: 14px;
  transition: background-color 0.2s ease;
}

/* Effet de brillance au survol - DESACTIVE pour eviter les bugs */
/*
header nav ul li a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.6s ease;
}

header nav ul li a:hover::before {
  left: 100%;
}
*/

/* Effet de pulse - DESACTIVE pour eviter les bugs */
/*
header nav ul li a::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.6s ease;
}

header nav ul li a:hover::after {
  width: 300px;
  height: 300px;
}
*/

header nav ul li a:hover {
  background-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}

/* Indicateur actif simplifié */
header nav ul li a.active {
  background-color: rgba(255, 255, 255, 0.25);
}

/* Animations supprimées pour simplifier */

/* Sous-menus ultra-modernes */
header nav ul li .dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(75, 20, 140, 0.95);
  backdrop-filter: blur(20px);
  list-style: none;
  padding: 20px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  z-index: 1000;
  min-width: 220px;
  opacity: 0;
  transform: translateX(-50%) translateY(-20px) scale(0.9);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Flèche du sous-menu */
header nav ul li .dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid rgba(75, 20, 140, 0.95);
}

header nav ul li:hover .dropdown-menu {
  display: block;
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
}

header nav ul li .dropdown-menu li {
  margin: 8px 0;
  animation: none; /* Désactiver l'animation pour les éléments du sous-menu */
}

header nav ul li .dropdown-menu a {
  padding: 12px 18px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  color: white;
  border-radius: 12px;
  display: block;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-transform: none;
  letter-spacing: 0.3px;
}

header nav ul li .dropdown-menu a:hover {
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.8), rgba(78, 205, 196, 0.8));
  transform: translateX(8px) scale(1.02);
  box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Animation spéciale pour les éléments du sous-menu */
header nav ul li .dropdown-menu li {
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

header nav ul li:hover .dropdown-menu li {
  opacity: 1;
  transform: translateY(0);
}

header nav ul li:hover .dropdown-menu li:nth-child(1) { transition-delay: 0.1s; }
header nav ul li:hover .dropdown-menu li:nth-child(2) { transition-delay: 0.2s; }
header nav ul li:hover .dropdown-menu li:nth-child(3) { transition-delay: 0.3s; }
header nav ul li:hover .dropdown-menu li:nth-child(4) { transition-delay: 0.4s; }

/* Animations et effets de scroll */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Styles améliorés pour le contenu principal */
main img.logo {
  transition: all 0.3s ease;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
}

main img.logo:hover {
  transform: scale(1.05) rotate(5deg);
  filter: drop-shadow(0 15px 30px rgba(138, 43, 226, 0.5));
}

main h1 {
  font-size: 3.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, #e8e8e8);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  margin: 30px 0;
  letter-spacing: 2px;
}

main p {
  font-size: 1.3rem;
  margin: 20px auto;
  max-width: 600px;
  opacity: 0.9;
  line-height: 1.8;
}

main section {
  margin: 60px auto;
  max-width: 800px;
  padding: 40px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

main section h2 {
  font-size: 2.5rem;
  margin-bottom: 30px;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Lecteur audio stylisé */
audio {
  width: 100%;
  max-width: 500px;
  height: 60px;
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  border: 2px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

audio:hover {
  transform: scale(1.02);
  box-shadow: 0 15px 40px rgba(138, 43, 226, 0.4);
}

/* Image de construction avec effet */
main section img {
  transition: all 0.3s ease;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

main section img:hover {
  transform: scale(1.05);
  box-shadow: 0 20px 50px rgba(138, 43, 226, 0.4);
}

/* Styles uniformes pour toutes les pages */
/* Mobile menu toggle button */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Menu mobile responsive */
@media (max-width: 768px) {
  .nav-container {
    padding: 15px 20px;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  header nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(75, 20, 140, 0.98);
    backdrop-filter: blur(15px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
  }
  
  header nav ul {
    flex-direction: column;
    padding: 20px;
    gap: 15px;
  }
  
  header nav ul li {
    width: 100%;
  }
  
  header nav ul li a {
    display: block;
    text-align: center;
    width: 100%;
    padding: 15px 20px;
    font-size: 16px;
  }
  
  header nav ul.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  /* Ajustements pour les pages principales */
  main {
    margin-top: 70px;
    padding: 20px 15px;
  }
  
  h1 {
    font-size: 2rem !important;
  }
  
  .main-logo {
    width: 120px !important;
  }
}

/* Uniformisation footer sur toutes les pages */
footer {
  background: rgba(75, 20, 140, 0.8);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px;
  color: white;
  text-align: center;
  margin-top: 40px;
}

footer p {
  margin: 0;
  opacity: 0.8;
}

/* Effets de particules uniformes */
.floating-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.particle {
  position: absolute;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.3;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 0.6;
  }
}

/* Styles pour les boutons modernes */
.btn {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(135deg, #8a2be2, #4b0082);
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  box-shadow: 0 10px 30px rgba(138, 43, 226, 0.4);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  background: linear-gradient(135deg, #9932cc, #6a0dad);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 20px 40px rgba(138, 43, 226, 0.6);
}

/* Footer moderne */
footer {
  background: rgba(75, 20, 140, 0.9);
  backdrop-filter: blur(10px);
  padding: 40px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 80px;
}

footer p {
  font-size: 1.1rem;
  opacity: 0.8;
  margin: 0;
}

/* Effets de particules flottantes */
.floating-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.particle {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.1;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 0.3;
  }
}

/* Menu mobile toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

/* Responsive design */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  header nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(75, 20, 140, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    gap: 10px;
    padding: 20px;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }
  
  header nav ul.active {
    display: flex;
  }
  
  header nav ul li {
    width: 100%;
    animation: slideInFromLeft 0.3s ease backwards;
  }
  
  header nav ul li a {
    width: 100%;
    text-align: center;
    padding: 15px;
    border-radius: 12px;
  }
  
  header nav ul li .dropdown-menu {
    position: static;
    transform: none;
    margin-top: 10px;
    background: rgba(255, 255, 255, 0.1);
  }
  
  header {
    padding: 10px 20px;
  }
  
  header .logo {
    font-size: 24px;
  }
  
  main {
    padding: 20px 15px;
  }
  
  main h1 {
    font-size: 2.5rem;
  }
  
  main section {
    margin: 30px auto;
    padding: 20px;
  }
  
  main section h2 {
    font-size: 2rem;
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Classes d'animation CSS qui manquent */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Effets de particules flottantes */
.floating-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.particle {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.1;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 0.3;
  }
}