pkg-components/stories/molecules/ThemeToggle/ThemeToggle.module.css

/* ========================= ThemeToggle.module.css ========================= */

.toggle {
  position: relative;
  display: inline-block;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  overflow: hidden;
  padding: 8px;
  background: linear-gradient(180deg, #111 0%, #0b0b0b 100%);
  transition:
    background-color 260ms ease,
    box-shadow 200ms ease,
    transform 120ms ease;
  -webkit-tap-highlight-color: transparent;
}

/* Focus */
.toggle:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.14);
  outline-offset: 4px;
  box-shadow:
    0 6px 18px rgba(0, 0, 0, 0.45),
    0 0 0 6px rgba(255, 255, 255, 0.02);
}

/* States */
.light {
  background: linear-gradient(180deg, #f6f7f9 0%, #eef0f2 100%);
}

.dark {
  background: linear-gradient(180deg, #0b0b0b 0%, #060606 100%);
}

/* ========================= Knob ========================= */

.knob {
  position: absolute;
  top: 8px;
  left: 8px;
  width: calc(50% - 9px);
  height: calc(100% - 16px);
  border-radius: 999px;
  background: linear-gradient(180deg, #ffffff 0%, #f0f0f0 100%);
  box-shadow:
    0 10px 30px rgba(2, 6, 23, 0.18),
    inset 0 -6px 12px rgba(0, 0, 0, 0.06);
  transform: translateX(0) scale(1);
  transition:
    transform 450ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 220ms ease;
  will-change: transform;
}

/* Press feedback */
.toggle:active {
  transform: scale(0.985);
}

.toggle:active .knob {
  transform: translateX(0) scale(0.985);
  transition-duration: 120ms;
}

/* Dark slide with overshoot */
.dark .knob {
  transform: translateX(calc(100% - 2px));
  animation: knob-slide 450ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* ========================= Icons ========================= */

.iconSun,
.iconMoon {
  position: absolute;
  top: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateY(-50%) scale(0.9);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 280ms ease,
    transform 450ms cubic-bezier(0.22, 1, 0.36, 1);
}

.iconSun {
  left: 20px;
  color: #ffb84d;
}

.iconMoon {
  right: 20px;
  color: #2b2f36;
}

/* Icon states */
.light .iconSun {
  opacity: 1;
  transform: translateY(-50%) scale(1) rotate(0deg);
}

.dark .iconSun {
  opacity: 0;
  transform: translateY(-50%) scale(0.7) rotate(-35deg);
}

.light .iconMoon {
  opacity: 0;
  transform: translateY(-50%) scale(0.7) rotate(35deg);
}

.dark .iconMoon {
  opacity: 1;
  transform: translateY(-50%) scale(1) rotate(0deg);
}

/* ========================= Animations ========================= */

@keyframes knob-slide {
  0% {
    transform: translateX(0) scale(1);
  }
  60% {
    transform: translateX(calc(100% + 6px)) scale(1.01);
  }
  100% {
    transform: translateX(calc(100% - 2px)) scale(1);
  }
}

/* ========================= Accessibility ========================= */

@media (prefers-reduced-motion: reduce) {
  .toggle,
  .knob,
  .iconSun,
  .iconMoon {
    transition: none !important;
    animation: none !important;
  }
}