/* Reset & base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Roboto', Arial, sans-serif;
  background: #f8f9fa;
  color: #181818;
  min-height: 100vh;
  line-height: 1.6;
}

/* Menu principal */
.menu {
  position: sticky;
  top: 0;
  width: 100%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  z-index: 100;
  transition: background 0.3s;
}
.menu .logo {
  height: 48px;
  transition: transform 0.2s;
}
.menu .logo:hover {
  transform: scale(1.05) rotate(-2deg);
}
.menu a {
  color: #181818;
  text-decoration: none;
  margin-left: 32px;
  font-weight: 500;
  font-size: 1.08rem;
  position: relative;
  transition: color 0.2s;
}
.menu a::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: #181818;
  transition: width 0.2s;
  position: absolute;
  bottom: -4px;
  left: 0;
}
.menu a:hover::after {
  width: 100%;
}
.menu a:hover {
  color: #007aff;
}



/* Responsive menu */
@media (max-width: 900px) {
  .menu {
    padding: 14px 18px;
  }
  .menu a {
    margin-left: 18px;
    font-size: 1rem;
  }
}
@media (max-width: 700px) {
  .menu {
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .menu .logo {
    height: 40px;
  }
  .menu a {
    display: none;
  }
  .menu .hamburger {
    display: flex;
  }
  .menu.open a {
    display: block;
    background: #fff;
    margin: 12px 0;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    font-size: 1.1rem;
  }
  .menu.open {
    flex-direction: column;
    align-items: flex-start;
    background: #fff;
    box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  }
}

/* Présentation */
.presentation {
  text-align: center;
  margin: 60px 0 30px 0;
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: #181818;
  animation: fadeInDown 1s;
}
.presentation + .presentation {
  font-size: 1.2rem;
  font-weight: 400;
  color: #444;
  margin-top: 10px;
}

/* Footer */
footer {
  background: #181818;
  color: #fff;
  padding: 40px 0 10px 0;
  margin-top: 60px;
}
.footer {
  max-width: 1200px;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}
.footer .insta img {
  width: 36px;
  margin-bottom: 12px;
  filter: brightness(0) invert(1);
  transition: filter 0.2s;
}
.footer .insta img:hover {
  filter: brightness(1) invert(0.5) sepia(1) hue-rotate(280deg) saturate(3);
}
.menu-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.menu-footer a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.2s;
}
.menu-footer a:hover {
  color: #007aff;
}
.copyright {
  width: 100%;
  text-align: center;
  margin-top: 18px;
  font-size: 0.98rem;
  color: #bbb;
}

/* Responsive footer */
@media (max-width: 700px) {
  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding: 0 18px;
  }
  .menu-footer {
    gap: 16px;
    margin-top: 10px;
  }
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px);}
  to { opacity: 1; transform: translateY(0);}
}

/* ...existing code... */

/* Hamburger icon */
.menu .hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  width: 32px;
  height: 32px;
  justify-content: center;
  align-items: center;
  z-index: 120;
}
.menu .hamburger span {
  height: 3px;
  width: 24px;
  background: #181818;
  margin: 3px 0;
  border-radius: 2px;
  transition: 0.3s;
}

/* Overlay for mobile menu */
.mobile-menu-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: rgba(40,40,40,0.65);
  backdrop-filter: blur(2px);
  z-index: 200;
  display: none;
  transition: opacity 0.3s;
}
.mobile-menu-overlay.open {
  display: block;
  animation: fadeIn 0.3s;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Slide-in menu */
.mobile-menu {
  position: absolute;
  top: 0; left: 0;
  width: 260px;
  height: 100%;
  background: #fff;
  box-shadow: 2px 0 16px rgba(0,0,0,0.08);
  padding: 32px 24px 24px 24px;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(.77,0,.18,1);
}
.mobile-menu-overlay.open .mobile-menu {
  transform: translateX(0);
}
.mobile-menu .close {
  font-size: 2.2rem;
  color: #181818;
  cursor: pointer;
  align-self: flex-end;
  margin-bottom: 30px;
  transition: color 0.2s;
}
.mobile-menu .close:hover {
  color: #007aff;
}
.mobile-menu a {
  color: #181818;
  text-decoration: none;
  font-size: 1.15rem;
  font-weight: 500;
  margin: 18px 0;
  transition: color 0.2s;
}
.mobile-menu a:hover {
  color: #007aff;
}

/* Responsive: show hamburger, hide desktop links */
@media (max-width: 700px) {
  .menu a {
    display: none;
  }
  .menu .hamburger {
    display: flex;
  }
}

/* ...existing code...