: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 */
.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 */
:focus-visible { outline: 2px solid var(--c-sec); outline-offset: 2px; }
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
textarea:focus:not(:focus-visible),
select:focus:not(:focus-visible) { outline: none; }

/* Sliders */
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 { background: var(--c-bg); }

/* Canvas wrap */
#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; }

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

/* Textarea */
textarea {
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.5;
}

/* Color input */
.color-input {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border: 1px solid var(--c-track);
  border-radius: 4px;
  padding: 0;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}
.color-input::-webkit-color-swatch-wrapper { padding: 2px; }
.color-input::-webkit-color-swatch { border: none; border-radius: 2px; }
.color-input::-moz-color-swatch { border: none; border-radius: 2px; }

/* Toast */
#toast {
  position: fixed; right: 14px; bottom: 14px; z-index: 60;
  background: var(--c-border); color: var(--c-primary); border: 1px solid var(--c-track);
  padding: 10px 12px; border-radius: 8px;
  opacity: 0; transform: translateY(8px);
  transition: opacity .2s, transform .2s;
  pointer-events: none; font-size: 13px;
}
#toast.show { opacity: 1; transform: translateY(0); }

/* Export overlay */
.export-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0, 0, 0, .7);
  display: none; place-items: center;
  backdrop-filter: blur(4px);
}
.export-overlay.active { display: grid; }
.export-modal {
  background: var(--c-sidebar);
  border: 1px solid var(--c-track);
  border-radius: 12px;
  padding: 24px 32px;
  text-align: center;
  min-width: 280px;
}

/* Preset buttons */
.preset-btn {
  position: relative;
  width: 100%; aspect-ratio: 1;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--c-track);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
  background: none;
  padding: 0;
}
.preset-btn:hover {
  border-color: var(--c-muted);
  transform: scale(1.08);
}
.preset-swatch {
  position: absolute; inset: 0;
  display: block;
}
.preset-swatch-inner {
  position: absolute;
  inset: 30% 25%;
  display: block;
  border-radius: 2px;
}

/* REC indicator */
.rec-indicator {
  font-size: 10px;
  font-weight: 700;
  color: #ef4444;
  letter-spacing: 0.05em;
  animation: rec-blink 1s ease-in-out infinite;
}
@keyframes rec-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}