.corner-tr,
.corner-tl {
  position: fixed;
  width: 120px;
  height: 120px;
  z-index: 19;
}

.corner-tr {
  top: 0;
  right: 0;
}

.corner-tl {
  top: 0;
  left: 0;
}

.theme-toggle,
.home-link {
  position: fixed;
  top: 0.7rem;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border: 0;
  padding: 0;
  margin: 0;
  background: transparent;
  cursor: pointer;
  color: var(--fg, #111);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 20;
  text-decoration: none;
  line-height: 0;
  -webkit-appearance: none;
  appearance: none;
}

.theme-toggle {
  right: 1rem;
}

.home-link {
  left: 1rem;
}

.theme-toggle.visible,
.home-link.visible {
  opacity: 1;
  pointer-events: auto;
}

.theme-toggle svg,
.home-link svg {
  width: 1.35rem;
  height: 1.35rem;
  display: block;
  overflow: visible;
}

.theme-toggle .sun,
.theme-toggle .moon {
  transform-origin: center;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.theme-toggle .ray {
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  transition: opacity 0.35s ease, transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

html:not(.dark) .theme-toggle .moon {
  opacity: 0;
  transform: scale(0.4) rotate(-30deg);
}

html:not(.dark) .theme-toggle .sun {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

html:not(.dark) .theme-toggle .ray {
  opacity: 1;
}

html.dark .theme-toggle .sun {
  opacity: 0;
  transform: scale(0.4) rotate(40deg);
}

html.dark .theme-toggle .moon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

html.dark .theme-toggle .ray {
  opacity: 0;
  transform: scale(0.2);
}

.theme-toggle.burst svg {
  animation: celestial-spin 1.1s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes celestial-spin {
  0% { transform: scale(1) rotate(0deg); }
  40% { transform: scale(1.55) rotate(140deg); }
  100% { transform: scale(1) rotate(360deg); }
}

.orbit {
  position: fixed;
  top: 1.95rem;
  right: 1.95rem;
  width: 0;
  height: 0;
  pointer-events: none;
  z-index: 15;
}

.orbit span {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--fg, #111);
  opacity: 0;
}

.orbit.play span {
  animation: orbit-fly 1s ease-out forwards;
}

.orbit span:nth-child(1) { --a: 0deg; }
.orbit span:nth-child(2) { --a: 45deg; }
.orbit span:nth-child(3) { --a: 90deg; }
.orbit span:nth-child(4) { --a: 135deg; }
.orbit span:nth-child(5) { --a: 180deg; }
.orbit span:nth-child(6) { --a: 225deg; }
.orbit span:nth-child(7) { --a: 270deg; }
.orbit span:nth-child(8) { --a: 315deg; }

@keyframes orbit-fly {
  0% {
    opacity: 0.9;
    transform: rotate(var(--a)) translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: rotate(var(--a)) translateY(-48px) scale(0.3);
  }
}

.theme-quote {
  position: fixed;
  top: 3.3rem;
  right: 1rem;
  max-width: 14rem;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
  font-style: italic;
  line-height: 1.35;
  color: var(--muted, #666);
  text-align: right;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
  z-index: 20;
}

.theme-quote.show {
  opacity: 1;
  transform: translateY(0);
}