:root {
  --paper: #f5f4ed;
  --panel: #fbfaf6;
  --ink: #17151c;
  --muted: #6f6a62;
  --line: #e2ddd2;
  --hot: #6a2bd9;
  --hot-ink: #fff;
  --chip: #eeeae0;
  --radius: 12px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121116;
    --panel: #19181e;
    --ink: #efece6;
    --muted: #9e9687;
    --line: #2c2a31;
    --hot: #9d6bff;
    --hot-ink: #120d1c;
    --chip: #24222a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font: 14px/1.4 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-columns: 330px 1fr;
  height: 100vh;
  height: 100dvh;
}

/* ---------- panel ---------- */
.panel {
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 20px 18px 40px;
}
.brand h1 {
  font-size: 20px;
  letter-spacing: 0.02em;
  margin: 0;
}
.brand p { margin: 2px 0 0; color: var(--muted); }
.group { margin-top: 20px; }
.group h2 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 18px 0 8px;
  font-weight: 650;
}
.group > h2:first-child { margin-top: 0; }

.field { display: grid; gap: 4px; margin-bottom: 10px; }
.label { font-size: 12px; color: var(--muted); }
input[type="text"], select {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
}
#text { font-size: 18px; font-weight: 600; letter-spacing: 0.02em; }
input[type="text"]:focus, select:focus { outline: 2px solid var(--hot); outline-offset: -1px; }

.row { display: grid; gap: 10px; }
.row.two { grid-template-columns: 1fr auto; }
.row.three { grid-template-columns: repeat(auto-fit, minmax(80px, 1fr)); }

.upload { position: relative; }
.upload input { position: absolute; inset: auto 0 0 0; height: 38px; opacity: 0; cursor: pointer; }
.upload .button { height: 38px; display: inline-flex; align-items: center; }

.check { display: flex; gap: 8px; align-items: center; cursor: pointer; user-select: none; }
.check input { accent-color: var(--hot); width: 16px; height: 16px; margin: 0; }

.colour input[type="color"] {
  width: 100%;
  height: 36px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  cursor: pointer;
}

.slider {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  column-gap: 8px;
  margin-bottom: 6px;
}
.slider output {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--ink);
  min-width: 44px;
  text-align: right;
}
.slider input { grid-column: 1 / -1; width: 100%; accent-color: var(--hot); margin: 2px 0 4px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font: inherit;
  font-size: 13px;
  border: 1px solid var(--line);
  background: var(--chip);
  color: var(--ink);
  border-radius: 999px;
  padding: 5px 12px;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------- stage ---------- */
.stage {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-width: 0;
  min-height: 0;
}
.toolbar, .exportbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 12px 18px;
}
.toolbar { border-bottom: 1px solid var(--line); }
.exportbar { border-top: 1px solid var(--line); }
.spacer { flex: 1; }
.size { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 12px; }

.seg {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px;
  background: var(--panel);
}
.seg button {
  font: inherit;
  font-size: 13px;
  border: 0;
  background: transparent;
  color: var(--ink);
  padding: 5px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.seg.mode button[aria-pressed="true"] { background: var(--hot); color: var(--hot-ink); }
[hidden] { display: none !important; }

.button {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  white-space: nowrap;
}
.button:hover { border-color: var(--muted); }
.button.primary { background: var(--hot); color: var(--hot-ink); border-color: var(--hot); }
.button.ghost { background: transparent; }
.button:disabled { opacity: .5; cursor: progress; }
.field.inline { margin: 0; }
.field.inline select { padding: 6px 8px; border-radius: 999px; }

.canvas {
  --paper: #fff;
  min-height: 0;
  overflow: auto;
  display: grid;
  place-items: center;
  padding: 32px;
  background: var(--paper);
}
.canvas.checker {
  background-color: #fff;
  background-image:
    linear-gradient(45deg, #e9e9e9 25%, transparent 25%),
    linear-gradient(-45deg, #e9e9e9 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #e9e9e9 75%),
    linear-gradient(-45deg, transparent 75%, #e9e9e9 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}
.art { width: 100%; max-width: 1400px; }
.art svg { display: block; width: 100%; height: auto; max-height: calc(100dvh - 200px); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 20px);
  background: var(--ink);
  color: var(--paper);
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- phone ---------- */
@media (max-width: 820px) {
  .app { display: flex; flex-direction: column; height: auto; }
  .stage { display: contents; }
  .canvas {
    order: -3;
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 14px 16px;
    min-height: 120px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 20px -18px rgba(0, 0, 0, .5);
  }
  .exportbar { order: -2; border-top: 0; border-bottom: 1px solid var(--line); }
  .toolbar { order: -1; }
  .toolbar, .exportbar { padding: 10px 16px; }
  .art svg { max-height: 26vh; }
  .panel { border-right: 0; padding: 16px 16px 48px; overflow: visible; }
  .toolbar .seg button { padding: 5px 9px; }
}