/* ------------------------------------------
   HEADER NAVIGATION
------------------------------------------ */
.site-nav {
  margin-top: 10px;
  text-align: center;
  width: 100%;
  display: flex;
  justify-content: center;
}

.site-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: inline-flex;
  gap: 24px;
}

.site-nav ul li {
  list-style: none;
  list-style-image: none;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-color);
  font-size: 14px;
  opacity: 0.8;
  letter-spacing: 0.4px;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.site-nav a:hover {
  opacity: 1;
  color: var(--green);
}

.site-nav a.active {
  color: var(--green);
  opacity: 1;
  position: relative;
}

.site-nav a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
}

/* ------------------------------------------
   RESPONSIVE HEADER NAVIGATION
------------------------------------------ */
@media (max-width: 600px) {
  .site-nav {
    margin-top: 15px;
    justify-content: center;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }

  .site-nav li {
    width: 100%;
  }

  .site-nav a {
    display: inline-block;
    padding: 6px 0;
  }

  .site-nav a.active::after {
    bottom: -2px;
  }
}


/* ------------------------------------------
   SCROLL TO TOP BUTTON
------------------------------------------ */

.scroll-top-btn {
  cursor: pointer;
  font-size: 13px;
  padding: 8px 18px;
  border: 1px solid var(--green);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text-light);
  border-radius: 4px;
  transition: all 0.25s ease;
}

.scroll-top-wrapper {
  text-align: center;
  margin: 40px 0;
}

.scroll-top-wrapper.floating {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 999;
  margin: 0;
}

#scrollTopBtn {
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

#scrollTopBtn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.scroll-top-btn:hover {
  border-color: var(--green);
  box-shadow: 0 0 6px var(--green), 0 0 12px var(--green);
}

#scrollTopBtn:hover {
  transform: translateY(-2px);
}