@charset "UTF-8";
/* CSS Document */

/* ===========================
   BACK TO TOP BUTTON
=========================== */
#backToTop {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: radial-gradient(circle at top left, var(--accent-alt), var(--accent));
  box-shadow: 0 10px 30px rgba(247,74,5,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px) scale(0.9);
  transition:
    opacity 0.4s ease,
    transform 0.4s ease,
    box-shadow 0.35s ease;
  z-index: 300;
}

/* Visible state */
#backToTop.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* Arrow */
#backToTop .arrow {
  width: 14px;
  height: 14px;
  border-left: 3px solid #000;
  border-top: 3px solid #000;
  transform: rotate(45deg) translate(1px, 1px);
}

/* Hover glow */
#backToTop:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 14px 40px rgba(247,74,5,0.75);
}

/* Subtle pulse */
#backToTop.show {
  animation: backTopPulse 3s ease-in-out infinite;
}

@keyframes backTopPulse {
  0%, 100% {
    box-shadow: 0 10px 30px rgba(247,74,5,0.55);
  }
  50% {
    box-shadow: 0 16px 44px rgba(247,74,5,0.75);
  }
}

/* Light mode adjustments */
body.light #backToTop {
  box-shadow: 0 10px 30px rgba(255,140,30,0.6);
}

body.light #backToTop:hover {
  box-shadow: 0 14px 40px rgba(255,140,30,0.8);
}