:root {
  --navy: #012F6A;
  --blue: #0079C4;
  --red: #F41E01;
  --orange: #FE5402;
}

.bottom-nav {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  background: white;
  border-radius: 20px;
  box-shadow: 0 8px 40px rgba(1,47,106,0.25);
  padding: 8px;
  display: none;
  gap: 6px;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 14px;
  border-radius: 12px;
  text-decoration: none;
  color: #8896a5;
  font-size: 10px;
  font-weight: 700;
  transition: 0.2s;
}

.bottom-nav-item svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

/* Dynamic colors */
.bottom-nav.section-accueil .active {
  background: rgba(1,47,106,0.1);
  color: var(--navy);
}

.bottom-nav.section-services .active {
  background: rgba(0,121,196,0.1);
  color: var(--blue);
}

.bottom-nav.section-projets .active {
  background: rgba(244,30,1,0.1);
  color: var(--red);
}

.bottom-nav.section-contact .active {
  background: rgba(254,84,2,0.1);
  color: var(--orange);
}

.cta-nav {
  background: linear-gradient(135deg, var(--red), var(--orange));
  color: white;
}

@media (max-width: 768px) {
  .bottom-nav {
    display: flex;
  }
  body {
    padding-bottom: 90px;
  }
}

@media (min-width: 769px) {
  .bottom-nav {
    display: none !important;
  }
}