:root {
  --main-color: #ffffff;
  --text-color: #1a1a1a;
  --accent-color: #007acc;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Helvetica Neue', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--main-color);
  color: var(--text-color);
  line-height: 1.6;
}

/* HERO IMAGE */
.hero {
  width: 100%;
  overflow: visible; /* empêche la coupure */
}

.hero img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: center top;
}

/* LANG SWITCHER */
.lang-switcher {
  text-align: center;
  margin: 1.2rem 0 2rem;
  font-size: 0.95rem;
}

.lang-switcher button {
  background: none;
  border: none;
  color: var(--accent-color);
  font-weight: 500;
  margin: 0 0.5rem;
  cursor: pointer;
  transition: color 0.3s, border-bottom 0.3s;
}

.lang-switcher button:hover {
  color: #004d80;
  border-bottom: 1px solid var(--accent-color);
}

.lang-switcher .divider {
  color: #bbb;
}

.lang-switcher button.active {
  font-weight: bold;
  border-bottom: 2px solid var(--accent-color);
  color: var(--accent-color);
}

/* NAVIGATION */
nav {
  text-align: center;
  padding: 0.5rem 0;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  background-color: #fafafa;
}

nav a {
  display: inline-block;
  margin: 0.5rem 0.75rem;
  text-decoration: none;
  color: var(--accent-color);
  font-weight: bold;
  font-size: 1rem;
}

/* CONTENT SECTIONS */
section {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

h2 {
  border-bottom: 2px solid #eee;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
  color: var(--text-color);
  font-size: 1.6rem;
}

ul {
  padding-left: 1.2rem;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 2rem 1rem;
  background-color: var(--main-color);
  font-size: 0.9rem;
  color: #888;
}

/* RESPONSIVE */
@media screen and (max-width: 600px) {
  nav a {
    display: block;
    margin: 0.5rem 0;
  }

  section {
    padding: 1.5rem 1rem;
  }
}