:root {
  --bg: #17181b;
  --panel: #1f2024;
  --panel-2: #26272c;
  --line: #34363c;
  --text: #e9e7e3;
  --muted: #9a9894;
  --accent: #f2b26b;
  --accent-ink: #1b1308;
  --radius: 10px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
}

#app { display: flex; height: 100vh; height: 100dvh; }

/* ---------- viewport ---------- */
#viewport { position: relative; flex: 1; min-width: 0; }
#c { display: block; width: 100%; height: 100%; touch-action: none; cursor: grab; }
#c.light-mode { cursor: crosshair; }
#loading {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: var(--muted); font-size: 14px; pointer-events: none;
}
#loading.hidden { display: none; }
#dropHint {
  position: absolute; inset: 10px; display: none; place-items: center;
  border: 2px dashed var(--accent); border-radius: 14px; background: rgba(242,178,107,.08);
  color: var(--accent); font-size: 15px; font-weight: 600; pointer-events: none;
}
#viewport.dropping #dropHint { display: grid; }
.upload-btn { border-style: dashed; color: var(--accent); }
.upload-hint { margin-top: 8px; font-size: 11px; }
.head-grid button { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.orient { margin-top: 0; }
.orient button { padding: 4px 7px; font-size: 11px; }

.toolbar {
  position: absolute; left: 12px; right: 12px;
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  pointer-events: none;
}
.toolbar > * { pointer-events: auto; }
.toolbar.top { top: 12px; }
.toolbar.bottom { bottom: 12px; }
.toolbar.bottom #savePng { margin-left: auto; }

/* ---------- panel ---------- */
#panel {
  width: 340px; flex: none; overflow-y: auto;
  background: var(--panel); border-left: 1px solid var(--line);
  padding: 16px 16px 24px;
}
.brand h1 { font-size: 16px; margin: 0; letter-spacing: .2px; }
.brand p { margin: 2px 0 0; color: var(--muted); }

section { border-top: 1px solid var(--line); padding-top: 14px; margin-top: 14px; }
h2 { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 10px; font-weight: 600; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.section-head h2 { margin: 0; }

/* ---------- buttons ---------- */
button {
  font: inherit; color: var(--text); background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 7px 11px; cursor: pointer;
}
button:hover { border-color: #4a4c53; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button.small { padding: 5px 9px; font-size: 12px; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.ghost { background: transparent; }
button.danger { color: #ff8f8f; }
button.on { background: var(--text); color: var(--bg); border-color: var(--text); }

.seg { display: inline-flex; background: rgba(20,20,22,.75); backdrop-filter: blur(6px); border: 1px solid var(--line); border-radius: 9px; padding: 2px; }
.seg button { border: 0; background: transparent; padding: 6px 10px; border-radius: 7px; }
.seg button.on { background: var(--text); color: var(--bg); }
#panel .seg { background: var(--panel-2); backdrop-filter: none; }
.toolbar button.ghost, .toolbar button:not(.primary):not(.seg button) { background: rgba(20,20,22,.75); backdrop-filter: blur(6px); }

.preset-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.preset-grid button { text-align: left; display: flex; align-items: center; gap: 8px; }
.preset-grid .sw { display: inline-flex; gap: 2px; flex: none; }
.preset-grid .sw i { width: 8px; height: 8px; border-radius: 50%; display: block; }

/* ---------- light chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 9px 5px 7px; border-radius: 999px; font-size: 12px; }
.chip .dot { width: 12px; height: 12px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35); }
.chip.sel { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.chip.off { opacity: .45; }

.pad-wrap { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; }
#pad { width: 132px; height: 132px; flex: none; touch-action: none; cursor: crosshair; }
.pad-side { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.hint { margin: 0; color: var(--muted); font-size: 12px; }

/* ---------- form rows ---------- */
.row { display: grid; grid-template-columns: 82px 1fr 46px; align-items: center; gap: 8px; margin: 7px 0; }
.row .lbl { color: var(--muted); }
.row output { text-align: right; font-variant-numeric: tabular-nums; color: var(--text); }
.row.wide { grid-template-columns: 82px 1fr; }
input[type=range] { width: 100%; accent-color: var(--accent); margin: 0; }
input[type=color] { width: 100%; height: 26px; padding: 0 2px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel-2); cursor: pointer; }
input[type=text], select {
  width: 100%; font: inherit; color: var(--text); background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 5px 7px;
}
.check { display: flex; align-items: center; gap: 8px; margin: 7px 0; color: var(--text); cursor: pointer; }
.check input { accent-color: var(--accent); width: 15px; height: 15px; margin: 0; }
.row-btns { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.editor-head { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; }

footer { border-top: 1px solid var(--line); margin-top: 16px; padding-top: 12px; }
.credit { color: var(--muted); font-size: 11px; margin: 12px 0 0; }
.credit a { color: var(--muted); }

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px);
  background: var(--text); color: var(--bg); padding: 8px 14px; border-radius: 8px;
  opacity: 0; transition: .2s; pointer-events: none; font-weight: 500;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- small screens ---------- */
@media (max-width: 760px) {
  #app { flex-direction: column; }
  #viewport { flex: none; height: 55dvh; }
  #panel { width: auto; flex: 1; border-left: 0; border-top: 1px solid var(--line); padding: 12px 16px 24px; }
  .brand { display: none; }
  #panel > section:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
  .toolbar { left: 8px; right: 8px; }
  .toolbar.top { top: 8px; }
  .toolbar.bottom { bottom: 8px; }
  .seg button { padding: 6px 8px; }
}