:root {
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

/* Scrollbar — 4px, var(--c-track) */
.custom-scrollbar::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: var(--c-track);
  border-radius: 2px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--c-muted);
}

:focus-visible {
  outline: 2px solid var(--c-sec);
  outline-offset: 2px;
}

button:focus:not(:focus-visible),
input:focus:not(:focus-visible) {
  outline: none;
}

/* Slider — 2px track, 12px white thumb */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 12px;
  width: 12px;
  border-radius: 50%;
  background: var(--c-white);
  cursor: pointer;
  margin-top: -5px;
}

input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 2px;
  cursor: pointer;
  background: var(--c-track);
}

input[type="range"]::-moz-range-track {
  width: 100%;
  height: 2px;
  cursor: pointer;
  background: var(--c-track);
  border: 0;
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-white);
  border: 0;
  cursor: pointer;
}

input[type="range"]:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Canvas stage */
.canvas-stage {
  position: relative;
  background: var(--c-bg);
}

/* Color picker */
input[type="color"] {
  -webkit-appearance: none;
  appearance: none;
  border: 1px solid var(--c-track);
  border-radius: 4px;
  background: var(--c-sidebar);
  cursor: pointer;
  padding: 1px;
}

input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 1px;
}

input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 3px;
}

/* Pill button group */
.btn-pill {
  padding: 0.35rem 0.4rem;
  font-size: 10px;
  border-radius: 4px;
  border: 1px solid var(--c-track);
  background: var(--c-border);
  color: var(--c-sec);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  text-align: center;
  line-height: 1.3;
}

.btn-pill:hover {
  background: var(--c-track);
  color: var(--c-primary);
}

.btn-pill.active {
  background: var(--c-white);
  color: var(--c-bg);
  border-color: var(--c-primary);
  font-weight: 500;
}

/* Canvas container */
#canvasWrap {
  position: relative;
  box-shadow: 0 24px 48px -16px color-mix(in oklab, var(--ombra), transparent 80%);
  outline: 1px solid var(--c-border);
}

#canvasWrap canvas {
  display: block;
}

/* Color swatches */
.color-swatch {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
}

.color-swatch:hover {
  transform: scale(1.15);
}

.color-swatch.active {
  border-color: var(--c-white);
  box-shadow: 0 0 0 1px var(--c-bg), 0 0 0 3px var(--c-white);
}

/* Select */
select {
  -webkit-appearance: none;
  appearance: none;
}

/* Drop zone highlight */
#drop-zone.dragover {
  border-color: var(--c-sec);
  background: rgba(163, 163, 163, 0.08);
}