body {
  margin: 0;
  font-family: 'Oswald', sans-serif;
  color: #fff;
}
/* Navigation */
/* Navigation transparente par défaut */
header nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
  z-index: 1000;
}

/* Style quand on scrolle */
header nav.scrolled {
  background: rgba(255,255,255,0.95);
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

header nav ul li a {
  color: #fff; /* texte blanc par défaut sur fond transparent */
  transition: color 0.3s ease;
}

header nav.scrolled ul li a {
  color: #333; /* texte foncé quand nav devient blanche */
}
nav {
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
}
.nav-logo img {
  height: 50px;
  width: auto;
  display: block;
}
nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}
nav a {
  text-decoration: none;
  color: #ffffff;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
}
nav a.active,
nav a:hover {
  background: #689cfc;
  color: #fff;
}
/* Hero section */
.hero {
  height: 100vh;
  background: url("../assets/hero-tropical.jpg") center/cover no-repeat;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
}
.center-content {
  position: relative;
  z-index: 1;
}
.hero-logo {
  width: 500px;          /* logo bien grand */
  margin-bottom: 0.2rem; /* espace minime sous le logo */
}
.hero-tagline {
  font-size: 1rem;
  font-style: italic;
  margin-top: 0;         /* collé au logo */
  margin-bottom: 0.5rem;
}
/* Footer */
footer {
  background: #111;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
}
.event-banner {
  background-color: #083970; /* bleu foncé */
  color: #fff;
  padding: 3rem 1rem;
}

.event-banner-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.event-logo img {
  width: 300px;
  height: auto;
  display: block;
}

.event-text {
  flex: 1;
  min-width: 250px;
}

.event-text h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
  border-bottom: 3px solid #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.event-text p {
  font-size: 1.3rem;
  font-weight: 500;
  margin: 0;
}

/* Responsive */
@media (max-width: 640px) {
  .event-banner-inner {
    flex-direction: column;
    text-align: center;
  }
  .event-logo img {
    margin: 0 auto;
  }
}