:root {
  --bg: #f4f3ef;
  --panel: #ffffff;
  --text: #1d2125;
  --muted: #5f6770;
  --line: #dcdad3;
  --accent: #c91a09;
  --accent-ink: #ffffff;
  --focus: #0055bf;
  --viewer: #e9eef3;
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15181b;
    --panel: #1e2226;
    --text: #e8eaec;
    --muted: #9aa3ab;
    --line: #33393f;
    --accent: #e0402c;
    --focus: #6ea8ff;
    --viewer: #23292f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #15181b;
  --panel: #1e2226;
  --text: #e8eaec;
  --muted: #9aa3ab;
  --line: #33393f;
  --accent: #e0402c;
  --focus: #6ea8ff;
  --viewer: #23292f;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
h1, h2, h3 { margin: 0; line-height: 1.2; }
h1 { font-size: 20px; }
h2 { font-size: 16px; margin: 22px 0 6px; }
h2:first-child { margin-top: 0; }
h3 { font-size: 15px; margin: 20px 0 4px; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 20px; border-bottom: 1px solid var(--line); background: var(--panel);
}
.brand { display: flex; gap: 12px; align-items: center; }
.brand svg { width: 34px; height: 34px; fill: var(--accent); flex: none; }
.brand p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.layout {
  display: grid; grid-template-columns: minmax(320px, 420px) 1fr; gap: 20px;
  padding: 20px; max-width: 1500px; margin: 0 auto;
}
.inputs, .output {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; min-width: 0;
}
.hint { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.status { color: var(--muted); font-size: 13px; min-height: 1.4em; margin: 8px 0 0; }
.status.error { color: var(--accent); }

.views { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.view { border: 1px solid var(--line); border-radius: 8px; padding: 8px; min-width: 0; }
.view.primary-view { grid-column: 1 / -1; }
.view-head { display: flex; align-items: baseline; gap: 6px; margin-bottom: 6px; }
.view-sub { color: var(--muted); font-size: 12px; flex: 1; }
.drop {
  position: relative; display: flex; align-items: center; justify-content: center;
  min-height: 110px; border: 1.5px dashed var(--line); border-radius: 6px; cursor: pointer; overflow: hidden;
}
.drop.has-image { border-style: solid; cursor: crosshair; }
.drop.over { border-color: var(--focus); }
.drop canvas { display: block; max-width: 100%; touch-action: none; }
.drop:not(.has-image) canvas { display: none; }
.drop-text { color: var(--muted); font-size: 13px; padding: 10px; text-align: center; }
.drop.has-image .drop-text { display: none; }
.view-controls { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 6px; font-size: 12px; }
.view-controls .tol { display: flex; align-items: center; gap: 6px; }
.view-controls .tol input { width: 90px; }

.settings { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; }
.settings label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.settings label.check { flex-direction: row; align-items: center; gap: 6px; }
.settings select { padding: 5px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.val { color: var(--muted); }
.palette { grid-column: 1 / -1; font-size: 13px; }
.palette summary { cursor: pointer; }
.palette-actions { display: flex; gap: 6px; margin: 8px 0; }
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 4px; }
.swatches label { flex-direction: row !important; align-items: center; gap: 6px !important; }
.sw { width: 14px; height: 14px; border-radius: 3px; border: 1px solid rgba(0, 0, 0, .25); flex: none; }
.sw.trans { background-image: linear-gradient(135deg, transparent 45%, rgba(255,255,255,.7) 50%, transparent 55%); }

button { cursor: pointer; border-radius: 7px; padding: 8px 14px; border: 1px solid var(--line); background: var(--panel); }
button.small { padding: 2px 8px; font-size: 12px; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; font-weight: 600; }
button.primary:disabled { opacity: .45; cursor: not-allowed; }
button.ghost:hover { border-color: var(--muted); }
#generate { width: 100%; margin-top: 16px; padding: 11px; }

.viewer-wrap { position: relative; border-radius: 8px; overflow: hidden; background: var(--viewer); }
.viewer { height: min(62vh, 640px); min-height: 320px; }
.viewer canvas { display: block; width: 100%; height: 100%; }
.empty { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); pointer-events: none; }
.layer-bar { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-top: 1px solid var(--line); font-size: 13px; background: var(--panel); }
.layer-bar input { flex: 1; }

.stats { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.stat { border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; }
.stat b { display: block; font-size: 18px; font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: 12px; }
.downloads { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }

.remap { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 6px; }
.remap-row { display: flex; align-items: center; gap: 8px; font-size: 13px; border: 1px solid var(--line); border-radius: 6px; padding: 4px 8px; }
.remap-row .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.remap-row .count { color: var(--muted); font-variant-numeric: tabular-nums; }
.remap-row select { max-width: 120px; padding: 2px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); font-size: 12px; }

.table-wrap { max-height: 360px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: 5px 10px; border-bottom: 1px solid var(--line); }
th { position: sticky; top: 0; background: var(--panel); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td .sw { display: inline-block; vertical-align: -2px; margin-right: 6px; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; padding: 16px; }
  .top { padding: 12px 16px; }
  .viewer { height: 52vh; }
}
@media (max-width: 480px) {
  .settings, .views { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; }
}