/* PixelClean web — same dark / light palettes as the desktop app (pixelclean/theme.py). */
@font-face {
  font-family: "Coders Crux";
  src: url("fonts/SVN-Coders-Crux.ttf") format("truetype");
  font-display: swap;
}

:root {
  --bg: #202124; --panel: #2b2c30; --field: #18191b; --fg: #e4e4e6; --muted: #9a9ca3;
  --border: #3d3f44; --hover: #383a3f; --select: #2f4f7a; --accent: #5aa0ff; --canvas: #141416;
  --check-a: #36363a; --check-b: #4a4a4f;
  --font: "Coders Crux", "Segoe UI", system-ui, sans-serif;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f3f3; --panel: #e6e6e8; --field: #ffffff; --fg: #1f1f1f; --muted: #6b6b6b;
    --border: #c9c9cc; --hover: #d9dbe0; --select: #cfe2ff; --accent: #2b6fd6; --canvas: #c9cbd0;
    --check-a: #ffffff; --check-b: #d6d6da;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  display: flex; flex-direction: column; background: var(--bg); color: var(--fg);
  font: 16px/1.25 var(--font);           /* the pixel font is only sharp at 16 px */
  -webkit-font-smoothing: none; font-smooth: never;
}
button, input, select { font: inherit; color: inherit; }
p { margin: 4px 0; }
.muted { color: var(--muted); }

/* top bar */
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.brand { font-weight: bold; color: var(--accent); margin-right: 6px; }
button {
  background: var(--panel); border: 1px solid var(--border); border-radius: 3px; padding: 4px 10px; cursor: pointer;
}
button:hover:not(:disabled) { background: var(--hover); }
button:disabled { color: var(--muted); cursor: default; }
.seg { display: inline-flex; }
.seg button { border-radius: 0; margin-left: -1px; }
.seg button:first-child { border-radius: 3px 0 0 3px; margin-left: 0; }
.seg button:last-child { border-radius: 0 3px 3px 0; }
.seg button.on { background: var(--select); border-color: var(--accent); }
.hint { flex: 1; min-width: 0; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.engine { margin-left: auto; color: var(--muted); }
.engine.ok { color: #6fcf7f; }
.engine.bad { color: #ff6b6b; }

/* main area */
.main { flex: 1; display: flex; min-height: 0; }
.views { flex: 1; display: flex; gap: 6px; padding: 6px; min-width: 0; position: relative; }
.view { flex: 1; position: relative; min-width: 0; background: var(--canvas); border: 1px solid var(--border); }
.view canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
.view canvas.panning { cursor: grabbing; }
.view-title { position: absolute; left: 8px; top: 4px; z-index: 1; color: var(--muted); pointer-events: none; }
.views.only-src #box-out, .views.only-out #box-src { display: none; }
.drop {
  position: absolute; inset: 6px; display: flex; align-items: center; justify-content: center; text-align: center;
  border: 2px dashed var(--border); background: var(--bg); padding: 16px; z-index: 2;
}
.drop .big { font-size: 32px; line-height: 1.2; margin-bottom: 10px; }
.drop.hidden { display: none; }
.drop.over { border-color: var(--accent); display: flex; }

/* settings panel */
.panel { width: 320px; flex: none; overflow-y: auto; padding: 8px; border-left: 1px solid var(--border); }
.sec { margin-bottom: 6px; border: 1px solid var(--border); border-radius: 3px; background: var(--bg); }
.sec summary { cursor: pointer; padding: 5px 8px; background: var(--panel); user-select: none; }
.sec[open] summary { border-bottom: 1px solid var(--border); }
.sec > :not(summary) { margin-left: 10px; margin-right: 8px; }
.sec > :nth-child(2) { margin-top: 6px; }
.sec > :last-child { margin-bottom: 8px; }
.sec label { display: flex; align-items: center; gap: 6px; padding: 2px 0; cursor: pointer; }
.row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; padding: 2px 0; }
.slider { padding: 2px 0; }
.slider input[type=range] { flex: 1; accent-color: var(--accent); }
.slider output { width: 40px; text-align: right; }
input[type=number] {
  width: 64px; background: var(--field); border: 1px solid var(--border); border-radius: 2px; padding: 2px 4px;
}
input[type=number]:focus { outline: 1px solid var(--accent); }
input[type=color] { width: 36px; height: 24px; padding: 0; border: 1px solid var(--border); background: var(--field); }
input[type=radio], input[type=checkbox] { accent-color: var(--accent); margin: 0; }

/* tabs Vẽ / Xử lý: fixed, equal size — they never move when clicked */
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; margin-bottom: 8px; }
.tab { border-radius: 3px 3px 0 0; padding: 5px 0; color: var(--muted); border-bottom-color: var(--border); }
.tab.on { background: var(--bg); color: var(--fg); border-top: 2px solid var(--accent); padding-top: 4px; }
.group { border: 1px solid var(--border); border-radius: 3px; margin: 0 0 8px; padding: 4px 8px 8px; }
.group legend { padding: 0 4px; font-weight: bold; }
.group label { display: flex; align-items: center; gap: 6px; padding: 2px 0; cursor: pointer; }
.grid4, .grid2 { display: grid; gap: 2px; margin: 2px 0 4px; }
.grid4 { grid-template-columns: repeat(4, 1fr); }
.grid2 { grid-template-columns: 1fr 1fr; }
.grid4 button, .grid2 button { padding: 4px 2px; }
input[type=text] { width: 90px; background: var(--field); border: 1px solid var(--border); border-radius: 2px; padding: 2px 4px; }
.keys p { margin: 4px 0; }

/* vertical drawing tool bar along the result view */
.view.with-tools canvas, .view.with-tools .view-title { left: 46px; }
.view.with-tools .view-title { left: 54px; }
.view.with-tools canvas { width: calc(100% - 46px); }
.toolbar {
  position: absolute; left: 0; top: 0; bottom: 0; width: 46px; z-index: 1; overflow-y: auto;
  display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 4px 0;
  background: var(--panel); border-right: 1px solid var(--border);
}
.toolbar hr { width: 30px; border: 0; border-top: 1px solid var(--border); margin: 3px 0; }
.tool { width: 38px; height: 38px; padding: 2px; border: 2px solid transparent; background: transparent; border-radius: 4px; }
.tool img { width: 30px; height: 30px; display: block; image-rendering: auto; }
.tool.on { border-color: var(--accent); background: var(--select); }
.tool-swatch { width: 30px; height: 22px; border: 1px solid var(--border); border-radius: 2px; cursor: pointer; margin-top: 4px; flex: none; }
.view.drawing canvas { cursor: crosshair; }
.view.drawing canvas.panning { cursor: grabbing; }

/* status bar */
.status { display: flex; gap: 14px; align-items: center; padding: 3px 8px; background: var(--panel); border-top: 1px solid var(--border); white-space: nowrap; overflow: hidden; }
.status .grow { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.swatch { width: 16px; height: 14px; border: 1px solid var(--border); display: none; }

/* phones / narrow windows: views on top, settings below */
@media (max-width: 820px) {
  body { height: auto; min-height: 100%; }
  .main { flex-direction: column; }
  .views { height: 70vh; flex: none; flex-direction: column; }
  .panel { width: auto; border-left: 0; border-top: 1px solid var(--border); overflow: visible; }
  .status { flex-wrap: wrap; white-space: normal; gap: 4px 12px; }
  .engine { margin-left: 0; width: 100%; }
  .hint { display: none; }
}