/* Image to SVG - one stylesheet, both themes, system fonts. */
:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel2: #1f232c;
  --ink: #e8ebf0;
  --ink-dim: #9aa3af;
  --line: #2b313c;
  --accent: #7c9cff;
  --accent-ink: #0b1020;
  --ok: #4cc38a;
  --warn: #e0a84a;
  --check-a: #262a33;
  --check-b: #1d2028;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 12px;
}
:root[data-theme="light"] {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --panel2: #eef0f4;
  --ink: #1a1d23;
  --ink-dim: #5d6573;
  --line: #d9dde4;
  --accent: #3858e9;
  --accent-ink: #ffffff;
  --ok: #18794e;
  --warn: #9a6200;
  --check-a: #e9ebef;
  --check-b: #ffffff;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 16px/1.5 var(--sans); }
.hidden { display: none !important; }
.muted { color: var(--ink-dim); }
.small { font-size: 0.85em; }
a { color: var(--accent); }
button { font: inherit; color: inherit; }

.topbar {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.brand .sep { color: var(--ink-dim); }
.backlink { text-decoration: none; }
.chip { font-size: 0.78em; padding: 2px 8px; border-radius: 999px; background: var(--panel2); color: var(--ink-dim); border: 1px solid var(--line); }

button.ghost, button.primary, .chipbtn, .segbtn, select {
  border: 1px solid var(--line); background: var(--panel); border-radius: 8px;
  padding: 6px 12px; cursor: pointer; min-height: 36px;
}
button.ghost:hover, .chipbtn:hover, .segbtn:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.primary:hover { filter: brightness(1.08); }
button:focus-visible, .dropzone:focus-visible, select:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
button.sq { width: 36px; padding: 0; }
button:disabled { opacity: 0.5; cursor: default; }
.linkish { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; cursor: pointer; }
.chipbtn { border-radius: 999px; padding: 4px 12px; min-height: 32px; font-size: 0.9em; }
.chipbtn[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

main { max-width: 1320px; margin: 0 auto; padding: 16px; }
.hero { text-align: center; padding: 18px 0 8px; }
.hero h1 { font-size: clamp(1.5rem, 4vw, 2.2rem); margin: 0 0 6px; letter-spacing: -0.01em; }
.lede { margin: 0 auto 16px; color: var(--ink-dim); max-width: 46em; }
.dropzone {
  max-width: 760px; margin: 0 auto; padding: 26px 16px; border: 2px dashed var(--line);
  border-radius: var(--radius); background: var(--panel); cursor: pointer; transition: border-color .15s, background .15s;
}
.dropzone.drag, .dropzone:hover { border-color: var(--accent); }
.dropzone.drag { background: var(--panel2); }
.dz-main { font-size: 1.15em; font-weight: 600; margin: 0 0 4px; }
.dz-sub { margin: 0; color: var(--ink-dim); }
.hero.compact { padding: 4px 0 4px; }
.hero.compact h1, .hero.compact .lede { display: none; }
.hero.compact .dropzone { padding: 10px 16px; border-width: 1px; }
.hero.compact .dz-main { display: none; }
.examples { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; align-items: center; margin: 12px 0 0; }
.msg { margin: 10px auto 0; max-width: 760px; color: var(--warn); }

.work { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px; margin-top: 12px; align-items: start; }
.viewer { min-width: 0; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; background: var(--panel); }
.seg .segbtn { border: 0; border-radius: 0; border-right: 1px solid var(--line); }
.seg .segbtn:last-child { border-right: 0; }
.segbtn[aria-selected="true"], .segbtn[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }
.seg-sm .segbtn { padding: 4px 10px; min-height: 32px; font-size: 0.9em; }
.zoom { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
#zoomFit { min-width: 64px; }

.stage {
  position: relative; border: 1px solid var(--line); border-radius: var(--radius);
  height: min(68vh, 640px); min-height: 280px; overflow: hidden;
}
.bg-checker { background-color: var(--check-b); background-image:
  linear-gradient(45deg, var(--check-a) 25%, transparent 25%), linear-gradient(-45deg, var(--check-a) 25%, transparent 25%),
  linear-gradient(45deg, transparent 75%, var(--check-a) 75%), linear-gradient(-45deg, transparent 75%, var(--check-a) 75%);
  background-size: 20px 20px; background-position: 0 0, 0 10px, 10px -10px, -10px 0; }
.bg-white { background: #ffffff; }
.bg-dark { background: #111111; }
.side { display: grid; grid-template-columns: 1fr 1fr; height: 100%; }
.side .pane + .pane { border-left: 1px solid var(--line); }
.single { height: 100%; }
.pane { position: relative; overflow: auto; height: 100%; }
.canvas { position: relative; margin: auto; }
.canvas img, .canvas svg { display: block; width: 100%; height: 100%; }
.canvas img.pix { image-rendering: pixelated; }
.layer { position: absolute; inset: 0; }
.splitbar { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--accent); pointer-events: none; box-shadow: 0 0 0 1px rgba(0,0,0,.25); }
.tag {
  position: absolute; top: 8px; left: 8px; z-index: 3; font-size: 0.75em; padding: 2px 8px; border-radius: 6px;
  background: rgba(0,0,0,.6); color: #fff; pointer-events: none;
}
.single .tag { position: absolute; }
.tag-r { left: auto; right: 22px; }
.single .tag-l { left: 8px; }
.outline svg path { fill: none !important; stroke: var(--accent); stroke-width: 1px; vector-effect: non-scaling-stroke; }
.splitctl { display: flex; gap: 10px; align-items: center; margin-top: 8px; font-size: 0.9em; color: var(--ink-dim); }
.splitctl input { flex: 1; }
.busy {
  position: absolute; right: 12px; bottom: 12px; z-index: 5; display: flex; gap: 8px; align-items: center;
  background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; font-size: 0.9em;
}
.spinner { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--line); border-top-color: var(--accent); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; } }

.stats { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; margin: 12px 0 0; }
.stats div { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
.stats dt { font-size: 0.75em; color: var(--ink-dim); }
.stats dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }
.note { margin: 8px 0 0; color: var(--warn); font-size: 0.92em; }

.palette-wrap { margin-top: 14px; }
.h3 { font-size: 1em; margin: 0 0 8px; }
.palette { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.palette li { display: flex; align-items: center; gap: 6px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 4px 6px 4px 4px; font-size: 0.82em; }
.palette li.off { opacity: 0.45; }
.palette input[type="color"] { width: 30px; height: 30px; border: 1px solid var(--line); border-radius: 6px; padding: 0; background: none; cursor: pointer; }
.palette .eye { border: 0; background: none; cursor: pointer; padding: 2px 4px; min-height: 30px; color: var(--ink-dim); }
.palette .hexv { font-family: var(--mono); }

.exports { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 14px; }
.pngset { display: inline-flex; gap: 4px; align-items: center; padding-left: 4px; }

.controls { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; position: sticky; top: 64px; }
.ctl { margin-bottom: 14px; }
.ctl-h { display: flex; justify-content: space-between; font-size: 0.9em; font-weight: 600; margin-bottom: 4px; }
.ctl-h output { font-weight: 400; color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.ctl input[type="range"] { width: 100%; accent-color: var(--accent); }
.ctl select { width: 100%; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.scale { display: flex; justify-content: space-between; font-size: 0.75em; color: var(--ink-dim); }
.check { display: flex; gap: 8px; align-items: center; font-size: 0.9em; margin: 4px 0; cursor: pointer; }
.check input { accent-color: var(--accent); width: 16px; height: 16px; }
.more { border-top: 1px solid var(--line); padding-top: 10px; margin-bottom: 10px; }
.more summary { cursor: pointer; font-weight: 600; font-size: 0.9em; margin-bottom: 10px; }

.faq { max-width: 760px; margin: 32px auto 0; }
.faq h2 { font-size: 1.1em; }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin-bottom: 8px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 0; color: var(--ink-dim); }
.foot { display: flex; gap: 12px; justify-content: center; padding: 28px 16px; color: var(--ink-dim); font-size: 0.85em; }

@media (max-width: 900px) {
  .work { grid-template-columns: 1fr; }
  .controls { position: static; }
  .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  main { padding: 12px 16px; }
  .side { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
  .side .pane + .pane { border-left: 0; border-top: 1px solid var(--line); }
  .stage { height: 70vh; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .seg { width: 100%; }
  .seg .segbtn { flex: 1; padding: 6px 4px; }
  .zoom { justify-content: space-between; }
}