:root {
  --bg0: #1a221c;
  --bg1: #243028;
  --panel: #2c3a31;
  --ink: #e8efe6;
  --muted: #9aaf9d;
  --accent: #d4a24c;
  --line: rgba(232, 239, 230, 0.12);
  --ok: #6bcf8e;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  color: var(--ink);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(900px 500px at 0% 0%, rgba(212, 162, 76, 0.14), transparent 55%),
    radial-gradient(800px 480px at 100% 0%, rgba(80, 140, 110, 0.16), transparent 50%),
    linear-gradient(165deg, var(--bg0), #121816 60%, #1c281f);
}

.app { width: min(1440px, 100%); margin: 0 auto; padding: 0.8rem 1rem 2rem; }

.top {
  display: flex; flex-wrap: wrap; gap: 0.8rem;
  justify-content: space-between; align-items: end;
  margin-bottom: 0.8rem;
}
.brand {
  margin: 0; font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-family: "STSong", "Songti SC", "Noto Serif SC", serif;
  letter-spacing: 0.08em; color: var(--accent);
}
.tag { margin: 0.2rem 0 0; color: var(--muted); font-size: 0.9rem; }
.top-actions { display: flex; flex-wrap: wrap; gap: 0.45rem; }

button, .file-btn {
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  border-radius: 4px; padding: 0.4rem 0.7rem; cursor: pointer; font: inherit;
}
button:hover, .file-btn:hover { filter: brightness(1.1); }
button.primary { background: var(--accent); color: #1a150c; border-color: transparent; font-weight: 650; }
.file-btn { display: inline-flex; align-items: center; }

.main {
  display: grid;
  grid-template-columns: 220px minmax(320px, 1fr) 280px;
  gap: 0.7rem;
}
@media (max-width: 1100px) {
  .main { grid-template-columns: 1fr; }
}

.palette, .inspector, .canvas-wrap, .result {
  background: color-mix(in srgb, var(--panel) 92%, black);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.7rem;
}

h3 { margin: 0.8rem 0 0.45rem; font-size: 0.92rem; color: var(--accent); }
h3:first-child { margin-top: 0; }
.muted { color: var(--muted); font-size: 0.85rem; }

.tabs { display: flex; gap: 0.3rem; margin-bottom: 0.45rem; }
.tabs button.on { background: var(--accent); color: #1a150c; }

.palette-list {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.3rem;
  max-height: 70vh; overflow: auto;
}
.swatch {
  border: 1px solid var(--line); border-radius: 4px; padding: 0.3rem;
  font-size: 0.72rem; cursor: pointer; text-align: left;
  display: flex; gap: 0.35rem; align-items: center;
}
.swatch.on { outline: 2px solid var(--accent); }
.dot { width: 12px; height: 12px; border-radius: 2px; flex: 0 0 auto; }

.floor-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: space-between; margin-bottom: 0.45rem; }
.floor-tabs { display: flex; gap: 0.3rem; flex-wrap: wrap; }
.floor-tabs button.on { background: var(--ok); color: #102016; }
.floor-ops { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; font-size: 0.85rem; }
.brush { color: var(--muted); }

#map {
  width: min(100%, 640px); height: auto; display: block; margin: 0 auto;
  background: #1b241e; border-radius: 4px; cursor: crosshair;
  image-rendering: pixelated;
}
.hint { margin: 0.4rem 0 0; color: var(--muted); font-size: 0.8rem; text-align: center; }

.inspector label {
  display: flex; flex-direction: column; gap: 0.2rem;
  font-size: 0.78rem; margin-bottom: 0.35rem; color: var(--muted);
}
.inspector label.check { flex-direction: row; align-items: center; gap: 0.4rem; color: var(--ink); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.35rem; }
input, select {
  border: 1px solid var(--line); background: #1b241e; color: var(--ink);
  border-radius: 3px; padding: 0.3rem 0.35rem; font: inherit;
}
.inspector button { width: 100%; margin-top: 0.3rem; }

.shop-form textarea {
  width: 100%; min-height: 90px; background: #1b241e; color: var(--ink);
  border: 1px solid var(--line); border-radius: 3px; font-size: 0.75rem;
}

.result { margin-top: 0.7rem; }
.result-head { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.result-head h2 { margin: 0; flex: 1; font-size: 1.1rem; }
#summary {
  background: #1b241e; padding: 0.6rem; border-radius: 4px;
  white-space: pre-wrap; font-size: 0.85rem;
}
#routeList {
  max-height: 280px; overflow: auto; font-size: 0.88rem;
  margin: 0.4rem 0 0; padding-left: 1.2rem;
}
#routeList li.on { color: var(--accent); }