/* ==========================================
   BACK TO TOP BUTTON
   ========================================== */

.back-to-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 1000;
  opacity: 0;
  transform: translateY(1.5rem);
  pointer-events: none;
  transition: all 0.3s ease;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 9999px;
  background: linear-gradient(90deg, #1E88E5, #9C27B0);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(0, 230, 251, 0.3);
  transition: all 0.2s ease;
  width: 48px;
  height: 48px;
}

.back-to-top-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(0, 230, 251, 0.5);
}

.back-to-top-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 230, 251, 0.4);
}

.back-to-top-icon {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

/* Mobile */
@media (max-width: 768px) {
  .back-to-top {
    right: 1rem;
    bottom: 1rem;
  }

  .back-to-top-btn {
    width: 44px;
    height: 44px;
    padding: 0.625rem;
  }

  .back-to-top-icon {
    width: 18px;
    height: 18px;
  }
}