Depth Toggle Switch

<!--
  Author: @pica.studio
  License: MIT
  Tags: #switch #toggle
-->
<label class="depth-toggle">
  <input type="checkbox" class="depth-toggle__input" />
  <span class="depth-toggle__track">
    <span class="depth-toggle__knob"></span>
  </span>
</label>

/*
 * Author: @pica.studio
 * License: MIT
 * Tags: #switch #toggle
 */

.depth-toggle {
  position: relative;
  display: inline-block;
  width: 64px;
  height: 34px;
  cursor: pointer;
}

.depth-toggle__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.depth-toggle__track {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: #2b2b2b;
  box-shadow:
    inset 0 2px 4px rgba(0, 0, 0, 0.6),
    inset 0 -1px 1px rgba(255, 255, 255, 0.05);
  transition: background 0.35s ease;
}

.depth-toggle__knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(145deg, #f5f5f5, #c9c9c9);
  box-shadow:
    0 3px 6px rgba(0, 0, 0, 0.5),
    inset 0 -2px 3px rgba(0, 0, 0, 0.15),
    inset 0 2px 2px rgba(255, 255, 255, 0.8);
  transition: transform 0.35s cubic-bezier(0.6, -0.28, 0.4, 1.3), background 0.35s ease;
}

.depth-toggle__input:checked ~ .depth-toggle__track {
  background: #16463b;
}

.depth-toggle__input:checked ~ .depth-toggle__track .depth-toggle__knob {
  transform: translateX(30px);
  background: linear-gradient(145deg, #4ee6c4, #17b892);
}

.depth-toggle__input:focus-visible ~ .depth-toggle__track {
  outline: 2px solid #4ee6c4;
  outline-offset: 2px;
}