/* ---------- Theme / Background ---------- */
:root{
  --bg: #f7f7fb;
  --border: #e6e6ef;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #7c3aed;
  --accent-2:#06b6d4;
  --radius: 12px;
}

*{box-sizing:border-box}
html,body{height:100%}
body {
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
  margin: 0;
  padding: 1.25rem;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 100% -10%, #eae6ff 0%, rgba(234,230,255,0) 60%),
    radial-gradient(900px 500px at -10% 0%, #d9f7ff 0%, rgba(217,247,255,0) 60%),
    var(--bg);
}

h2{
  margin: 0 0 .75rem;
  font-weight: 800;
  letter-spacing:.2px;
  background: linear-gradient(90deg,var(--text), #4f46e5 60%, #06b6d4);
  -webkit-background-clip:text;
  background-clip:text;
  color: transparent;
}

/* ---------- Canvas front-and-center ---------- */
canvas{
  display:block;
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  image-rendering: pixelated;
  margin: .5rem 0 .25rem;
  touch-action: none;
}

/* side-by-side originals/edited */
.canvases {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: .75rem;
  justify-content: center;
}
.canvases div {
  flex: 1 1 320px;
  max-width: 100%;
}

/* ---------- Compact controls (shared) ---------- */
.controls{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap:.6rem .8rem;
  margin-top: .75rem;
  margin-bottom: .5rem;
}

.controls label{
  display:flex;
  flex-direction:column;
  gap:.35rem;
  font-size:.88rem;
  min-width:140px;
  /* no cards – simple & compact */
  padding: 0;
}

.inline{
  flex-direction:row !important;
  align-items:center;
  gap:.5rem;
  min-width:auto;
}

/* inputs */
input[type="text"],
input[type="number"],
input[type="color"],
input[type="file"]{
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 0 .6rem;
  background: #fff;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
input[type="file"]{
  padding: .35rem .6rem;
}
input[type="text"]:focus,
input[type="number"]:focus{
  border-color: color-mix(in oklch, var(--accent), white 60%);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent), white 85%);
}
input[type="color"]{ padding:.15rem; cursor:pointer; }

/* sliders */
input[type="range"]{
  -webkit-appearance: none;
  appearance: none;
  height: 28px;
  background: transparent;
  width: 100%;
}
input[type="range"]::-webkit-slider-runnable-track{
  height: 6px;
  background: linear-gradient(90deg, color-mix(in oklch, var(--accent), white 60%), color-mix(in oklch, var(--accent-2), white 55%));
  border-radius: 999px;
  border: 1px solid var(--border);
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance: none;
  appearance: none;
  margin-top: -7px;
  height: 18px; width: 18px; border-radius: 50%;
  background:#fff; border: 2px solid color-mix(in oklch, var(--accent), black 5%);
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
  cursor:pointer;
}
input[type="range"]::-moz-range-track{
  height: 6px;
  background: linear-gradient(90deg, color-mix(in oklch, var(--accent), white 60%), color-mix(in oklch, var(--accent-2), white 55%));
  border-radius: 999px;
  border: 1px solid var(--border);
}
input[type="range"]::-moz-range-thumb{
  height: 18px; width: 18px; border-radius:50%;
  background:#fff; border: 2px solid color-mix(in oklch, var(--accent), black 5%);
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
  cursor:pointer;
}

/* toggles */
input[type="checkbox"]{
  appearance: none; -webkit-appearance: none;
  width: 42px; height: 24px;
  border-radius: 999px;
  background: #e5e7eb;
  position: relative;
  border: 1px solid var(--border);
  outline: none; cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
input[type="checkbox"]::after{
  content:"";
  position:absolute; top:50%; left:4px; transform:translateY(-50%);
  width:16px; height:16px; border-radius:50%;
  background:#fff; box-shadow:0 1px 6px rgba(0,0,0,.15);
  transition:left .15s ease;
}
input[type="checkbox"]:checked{
  background: color-mix(in oklch, var(--accent), white 30%);
  border-color: color-mix(in oklch, var(--accent), black 10%);
}
input[type="checkbox"]:checked::after{ left:22px; }

/* outputs */
output{
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: .82rem;
  align-self:flex-end;
}

/* buttons */
button{
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-weight: 600;
  letter-spacing:.1px;
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease, transform .05s ease;
}
button:hover{ background:#fafaff; border-color: color-mix(in oklch, var(--accent), white 60%); }
button:active{ transform: translateY(1px); }

/* small screens */
@media (max-width: 600px) {
  .controls{ grid-template-columns: 1fr 1fr; gap:.5rem; }
  .controls label{ min-width: 0; }
}