/* verdart — colours echo the 2008 site (#D0D5E0 / #99A6BF slate blues). */
:root {
  --bg: #e4e8f0;
  --bg-deep: #c9d0de;
  --panel: #fbfcfe;
  --ink: #1c2230;
  --muted: #5d6679;
  --line: #c4cbda;
  --accent: #46557a;
  --accent-ink: #fff;
  --paper: #ffffff;
  --paper-ink: #151a24;
  --focus: #3d6fe0;
  --danger: #b42318;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 10px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #10131a;
    --bg-deep: #1a1f2b;
    --panel: #171b25;
    --ink: #e5e8ef;
    --muted: #97a0b4;
    --line: #2b3243;
    --accent: #8fa2d6;
    --accent-ink: #10131a;
    --paper: #0c0f15;
    --paper-ink: #dfe4ee;
    --focus: #7ea2ff;
    --danger: #ff8a80;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #10131a; --bg-deep: #1a1f2b; --panel: #171b25; --ink: #e5e8ef; --muted: #97a0b4;
  --line: #2b3243; --accent: #8fa2d6; --accent-ink: #10131a; --paper: #0c0f15; --paper-ink: #dfe4ee;
  --focus: #7ea2ff; --danger: #ff8a80; color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg-deep) 0, var(--bg) 220px) no-repeat, var(--bg);
  color: var(--ink);
  font: 15px/1.5 var(--sans);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* Masthead */
.masthead {
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 16px 20px;
  display: flex;
  align-items: flex-end;
  gap: 8px 24px;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
  font: 700 30px/1 var(--sans);
  letter-spacing: -0.02em;
}
.brand-mark { width: 44px; height: 44px; margin-right: 2px; }
.brand-tld { color: var(--muted); font-weight: 500; }
.tagline { margin: 0 0 3px; color: var(--muted); font-family: var(--mono); font-size: 14px; }

/* Layout */
.workspace {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 16px;
  display: grid;
  grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}
@media (max-width: 860px) {
  .workspace { grid-template-columns: minmax(0, 1fr); }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgb(0 0 0 / 0.05);
}

/* Controls */
.controls { padding: 4px 18px 18px; }
.group { border: 0; padding: 0; margin: 14px 0 0; min-width: 0; }
.group + .group { border-top: 1px solid var(--line); padding-top: 14px; }
legend {
  padding: 0;
  margin-bottom: 10px;
  font: 600 12px/1 var(--sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.dropzone {
  border: 1.5px dashed var(--line);
  border-radius: var(--radius);
  padding: 12px;
  cursor: pointer;
  transition: border-color .15s, background-color .15s;
}
.dropzone:hover, .dropzone.dragging { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.previews { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.previews figure { margin: 0; text-align: center; }
.previews canvas {
  display: block;
  width: 100%;
  height: 120px;
  object-fit: contain;
  background: #fff;
  border-radius: 6px;
  image-rendering: pixelated;
}
.previews figcaption { font-size: 12px; color: var(--muted); margin-top: 4px; }
.hint { font-size: 13px; color: var(--muted); margin: 8px 0 0; }
.error { color: var(--danger); font-size: 13px; margin: 8px 0 0; }

.shapes { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

.chip {
  font: 500 13px/1 var(--sans);
  padding: 7px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  white-space: nowrap;
}
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"], .chip.active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.chip.done { background: #1f8a4c; border-color: #1f8a4c; color: #fff; }

.link {
  font: inherit; font-size: 13px; color: var(--accent);
  background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline;
}

textarea, select {
  width: 100%;
  font: 12.5px/1.45 var(--mono);
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
}
textarea { resize: vertical; min-height: 140px; }
select { font-family: var(--sans); font-size: 14px; }

.row { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.samples { font-size: 13px; color: var(--muted); }

.field { margin: 0 0 14px; }
.field > label { display: flex; justify-content: space-between; font-weight: 500; margin-bottom: 4px; }
.field output { font-family: var(--mono); color: var(--muted); font-weight: 400; }
.with-button { display: flex; align-items: center; gap: 10px; }
.with-button input { flex: 1; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.check { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; cursor: pointer; }
.check input { accent-color: var(--accent); width: 16px; height: 16px; margin: 0; }

/* Result */
.result { display: flex; flex-direction: column; min-height: 70vh; overflow: hidden; }
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
.stats { margin: 0; font-size: 13px; color: var(--muted); }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }
.zoom { display: flex; align-items: center; gap: 12px; padding: 8px 14px 0; }
.zoom .check { margin: 0; font-size: 13px; }
.zoom input[type="range"] { max-width: 200px; }

.stage { flex: 1; padding: 12px 14px 14px; display: flex; min-height: 0; }
#output {
  flex: 1;
  margin: 0;
  padding: 18px;
  overflow: auto;
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.2;
  white-space: pre;
  tab-size: 4;
  max-height: 78vh;
}
#preview {
  flex: 1;
  min-height: 60vh;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

/* About */
.about {
  max-width: 1400px;
  margin: 28px auto 40px;
  padding: 0 16px;
  color: var(--muted);
}
.about h2 { font-size: 16px; color: var(--ink); margin: 0 0 8px; }
.about ol { margin: 0; padding-left: 20px; max-width: 70ch; }
.about li { margin-bottom: 4px; }
.credit { font-size: 13px; margin-top: 16px; }