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

/* ===== BASE ===== */
body {
  font-family: 'Inter', sans-serif;
  background: #0f0f0f;
  color: #f5f5f5;
  line-height: 1.6;
  padding-top: 70px; /* espace pour le header fixe */
}

a {
  color: #f1c40f;
  text-decoration: none;
}

a:hover {
  color: #ffffff;
}

/* ===== TYPO ===== */
h1, h2, h3 {
  font-family: 'Playfair Display', serif;
  margin-bottom: 20px;
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 20px;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 20px;
}

.three-columns {
  display: flex;
  gap: 20px;
}

.block {
  flex: 1;
}

/* ===== HERO ===== */
#hero {
  text-align: center;
  padding-top: 100px;
  padding-bottom: 120px;
}

/* ===== BUTTON ===== */
.btn {
  display: inline-block;
  padding: 10px 25px;
  background: #f1c40f;
  color: #0f0f0f;
  border-radius: 5px;
  font-weight: bold;
  margin-top: 20px;
}

.btn:hover {
  background: #ffd84d;
}

/* ===== SOCIALS ===== */
.socials a {
  margin-right: 15px;
}

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 40px 20px;
  font-size: 0.9rem;
  color: #aaa;
}

/* ===== HEADER FIXE ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  background: #0f0f0f;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  z-index: 1000;
}

.header-container {
  max-width: 900px;
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;

  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo img {
  height: 38px;
  display: block;
}

.lang-switch a {
  margin-left: 12px;
  font-weight: 600;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 700px) {

  h1 {
    font-size: 2.4rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  h3 {
    font-size: 1.3rem;
  }

  .container {
    padding: 60px 20px;
  }

  .three-columns {
    flex-direction: column;
  }

  .logo img {
    height: 32px;
  }

  .lang-switch a {
    font-size: 0.95rem;
    margin-left: 8px;
  }
}
.social-icons {
  display: flex;
  gap: 15px;
  margin-top: 15px;
}

.social-icons a img {
  transition: transform 0.2s ease, filter 0.2s ease;
}

.social-icons a:hover img {
  transform: scale(1.1);
  filter: brightness(1.2);
}