:root {
  --bg: #0b0d10;
  --panel: #14171d;
  --line: #232833;
  --text: #d5dbe3;
  --dim: #7f8a99;
  --green: #7ce0a5;
  --amber: #e8b294;
  --violet: #b08ad0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
}

#app { padding: 16px 20px 32px; max-width: 1500px; margin: 0 auto; }

header h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 5px;
  color: var(--green);
}
header h1 span { color: var(--violet); letter-spacing: 0; margin-left: 8px; }
.tagline { margin: 4px 0 16px; color: var(--dim); font-size: 12px; }

#layout { display: flex; gap: 16px; align-items: flex-start; }

#stage { position: relative; flex: 1 1 auto; min-width: 0; }

canvas {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  image-rendering: pixelated;
  background: #000;
}

#toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: 10px;
}

button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 6px 11px;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}
button:hover { border-color: var(--green); }
button:disabled { opacity: 0.35; cursor: default; border-color: var(--line); }
button.active { background: var(--green); color: #07120c; border-color: var(--green); }

.sep { width: 1px; height: 20px; background: var(--line); margin: 0 6px; }
.toolname { color: var(--dim); margin-left: auto; font-size: 11px; }

#side { width: 290px; flex: 0 0 290px; display: flex; flex-direction: column; gap: 10px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 10px 12px;
}
.panel h2 {
  margin: 0 0 8px;
  font-size: 10px;
  letter-spacing: 2.5px;
  color: var(--dim);
  font-weight: 500;
}

.row { display: flex; justify-content: space-between; padding: 2px 0; }
.row span { color: var(--dim); }
.row b { font-weight: 600; }
.row.big b { font-size: 17px; color: var(--green); }

.note { margin: 6px 0 0; font-size: 11px; color: var(--amber); }
.note.dim { color: var(--dim); }

.card {
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 8px 9px;
  margin-bottom: 8px;
  background: #191d24;
}
.card.sel { border-color: #ffe08a; }
.card.dead { opacity: 0.45; }
.card h3 { margin: 0 0 6px; font-size: 12px; color: var(--amber); letter-spacing: 1px; }
.card .warn {
  margin: 6px 0;
  font-size: 11px;
  color: var(--violet);
  border-left: 2px solid var(--violet);
  padding-left: 6px;
}
.card .btns { display: flex; gap: 5px; margin-top: 6px; }
.card .btns button { flex: 1; padding: 5px 4px; font-size: 11px; }
.muted { color: var(--dim); font-size: 11px; margin: 0; }

#log { list-style: none; margin: 0; padding: 0; font-size: 11px; }
#log li { padding: 2px 0; color: var(--text); border-bottom: 1px solid #1b1f27; }
#log span { color: var(--dim); margin-right: 6px; }

.banner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(6, 8, 11, 0.9);
  text-align: center;
  border-radius: 4px;
}
.banner.hidden { display: none; }
.banner h2 { margin: 0 0 8px; font-size: 26px; letter-spacing: 6px; color: var(--green); }
.banner p { margin: 3px 0; color: var(--text); }

@media (max-width: 1100px) {
  #layout { flex-direction: column; }
  #side { width: 100%; flex: 1 1 auto; }
}