:root {
  /* Global Page Theme */
  --bg-color: #e2e8f0;
  --transition-speed: 0.6s;

  --toggle-width: 140px;
  --toggle-height: 60px;
  --bezel-padding: 5px;

  /* Calculated Dimensions */
  --track-width: calc(var(--toggle-width) - (var(--bezel-padding) * 2));
  --track-height: calc(var(--toggle-height) - (var(--bezel-padding) * 2));
  --orb-size: calc(var(--track-height) - 10px);
  --orb-offset: 5px;
  --orb-travel: calc(
    var(--track-width) - var(--orb-size) - (var(--orb-offset) * 2)
  );
  --stretch-amount: 12px;

  /* Colors - Light Theme */
  --track-bg-light: #4ba5f8;
  --orb-bg-light: #fbbf24;
  --orb-glow-light: rgba(251, 191, 36, 0.7);

  /* Colors - Dark Theme */
  --track-bg-dark: #12121f;
  --orb-bg-dark: #e2e8f0;
  --orb-glow-dark: rgba(226, 232, 240, 0.3);
}

body.dark-mode {
  --bg-color: #0f172a;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: var(--bg-color);
  transition: background-color var(--transition-speed) ease;
  font-family: system-ui, sans-serif;
  overflow: hidden;
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: var(--toggle-width);
  height: var(--toggle-height);
  cursor: pointer;
  border-radius: 999px;
  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.1),
    inset 0 2px 4px rgba(255, 255, 255, 0.8);
  background: linear-gradient(145deg, #ffffff, #e6e6e6);
  transition: all var(--transition-speed) ease;
  -webkit-tap-highlight-color: transparent;
}

body.dark-mode .theme-switch {
  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.5),
    inset 0 1px 2px rgba(255, 255, 255, 0.1);
  background: linear-gradient(145deg, #2a2a35, #15151c);
}

.theme-switch__input {
  appearance: none;
  position: absolute;
  opacity: 0;
}

.theme-switch__track {
  position: absolute;
  top: var(--bezel-padding);
  left: var(--bezel-padding);
  width: var(--track-width);
  height: var(--track-height);
  border-radius: 999px;
  background-color: var(--track-bg-light);
  overflow: hidden;
  box-shadow: inset 0 5px 12px rgba(0, 0, 0, 0.25);
  transition: background-color var(--transition-speed) ease;
}

.theme-switch__input:checked ~ .theme-switch__track {
  background-color: var(--track-bg-dark);
}

/* =========================================
            Orb (Sun / Moon)
   ========================================= */
.theme-switch__orb {
  position: absolute;
  top: var(--orb-offset);
  left: var(--orb-offset);
  width: var(--orb-size);
  height: var(--orb-size);
  border-radius: 50%;
  background-color: var(--orb-bg-light);
  box-shadow:
    inset -4px -4px 8px rgba(180, 83, 9, 0.5),
    inset 3px 3px 6px rgba(255, 255, 255, 0.8),
    0 0 20px var(--orb-glow-light);
  transition:
    transform 0.7s cubic-bezier(0.68, -0.55, 0.265, 1.55),
    width 0.4s ease,
    background-color var(--transition-speed) ease;
  z-index: 20;
}

.theme-switch__input:checked ~ .theme-switch__track .theme-switch__orb {
  transform: translateX(var(--orb-travel)) rotate(360deg);
  background-color: var(--orb-bg-dark);
  box-shadow:
    inset -3px -3px 6px rgba(0, 0, 0, 0.3),
    inset 3px 3px 6px rgba(255, 255, 255, 0.8),
    0 0 15px var(--orb-glow-dark);
}

.theme-switch__input:active ~ .theme-switch__track .theme-switch__orb {
  width: calc(var(--orb-size) + var(--stretch-amount));
}

.theme-switch__input:checked:active ~ .theme-switch__track .theme-switch__orb {
  transform: translateX(calc(var(--orb-travel) - var(--stretch-amount)))
    rotate(360deg);
}

.crater {
  position: absolute;
  background-color: rgba(0, 0, 0, 0.15);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.4s ease;
  box-shadow: inset 2px 2px 3px rgba(0, 0, 0, 0.2);
}

.crater--1 {
  top: 20%;
  left: 20%;
  width: 25%;
  height: 25%;
}

.crater--2 {
  bottom: 25%;
  right: 20%;
  width: 15%;
  height: 15%;
}

.crater--3 {
  top: 40%;
  right: 35%;
  width: 10%;
  height: 10%;
}

.theme-switch__input:checked ~ .theme-switch__track .crater {
  opacity: 1;
}

.theme-switch__clouds {
  position: absolute;
  width: 100%;
  height: 100%;
  transition:
    transform var(--transition-speed) ease,
    opacity 0.4s ease;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  z-index: 10;
}

.cloud {
  position: absolute;
  background: #fff;
  border-radius: 50px;
}

.cloud::before,
.cloud::after {
  content: "";
  position: absolute;
  background: #fff;
  border-radius: 50%;
}

.cloud--1 {
  width: 35px;
  height: 12px;
  bottom: 15%;
  right: 10%;
  animation: cloud-float 4s ease-in-out infinite;
}

.cloud--1::before {
  width: 18px;
  height: 18px;
  top: -10px;
  left: 6px;
}

.cloud--1::after {
  width: 12px;
  height: 12px;
  top: -5px;
  right: 4px;
}

.cloud--2 {
  width: 25px;
  height: 10px;
  bottom: 30%;
  left: 35%;
  opacity: 0.7;
  animation: cloud-float 5s ease-in-out infinite reverse;
}

.cloud--2::before {
  width: 14px;
  height: 14px;
  top: -8px;
  left: 4px;
}

.cloud--2::after {
  width: 10px;
  height: 10px;
  top: -4px;
  right: 3px;
}

.theme-switch__input:checked ~ .theme-switch__track .theme-switch__clouds {
  transform: translateY(40px);
  opacity: 0;
}

/* Night Stars */
.theme-switch__stars {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: translateY(-20px);
  transition: all var(--transition-speed) ease;
}

.theme-switch__stars::before,
.theme-switch__stars::after {
  content: "";
  position: absolute;
  background: #fff;
  border-radius: 50%;
}

.theme-switch__stars::before {
  width: 2px;
  height: 2px;
  box-shadow:
    20px 10px #fff,
    40px 25px rgba(255, 255, 255, 0.6),
    75px 12px #fff;
  animation: twinkle 3s infinite alternate;
}

.theme-switch__input:checked ~ .theme-switch__track .theme-switch__stars {
  opacity: 1;
  transform: translateY(0);
}

/* Shooting Star */
.shooting-star {
  position: absolute;
  top: 15%;
  right: 20%;
  width: 35px;
  height: 1px;
  background: linear-gradient(to right, transparent, #fff);
  transform: rotate(-45deg) translateX(100px);
  opacity: 0;
}

.theme-switch__input:checked ~ .theme-switch__track .shooting-star {
  animation: shoot 5s infinite 2s;
}

/* Animations */
@keyframes cloud-float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-3px);
  }
}

@keyframes twinkle {
  0% {
    opacity: 0.3;
  }

  100% {
    opacity: 1;
  }
}

@keyframes shoot {
  0% {
    transform: rotate(-45deg) translateX(80px);
    opacity: 0;
  }

  5% {
    transform: rotate(-45deg) translateX(0px);
    opacity: 1;
  }

  10% {
    transform: rotate(-45deg) translateX(-80px);
    opacity: 0;
  }

  100% {
    transform: rotate(-45deg) translateX(-80px);
    opacity: 0;
  }
}