* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Helvetica Neue', sans-serif;
  background: #f0ece4;
  min-height: 100vh;
  padding: 16px;
  color: #2a2a2a;
}
h2 {
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
  font-weight: 400;
  border-bottom: 2px solid #2a2a2a;
  padding-bottom: 6px;
  display: inline-block;
}
.layout {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.panels { display: flex; flex-direction: column; gap: 14px; width: 320px; flex-shrink: 0; }
.panel {
  background: #fff;
  border: 1.5px solid #bbb;
  border-radius: 4px;
  padding: 13px;
}
.panel-title {
  font-size: 0.85rem;
  font-weight: bold;
  margin-bottom: 9px;
  color: #444;
  display: flex;
  align-items: center;
  gap: 6px;
}
.room-list {
  display: flex; flex-direction: column; gap: 7px;
  margin-bottom: 10px; max-height: 300px; overflow-y: auto;
}
.room-row {
  display: flex; align-items: center; gap: 5px;
  background: #f8f8f6; border: 1px solid #ddd;
  border-radius: 3px; padding: 6px 7px;
  transition: background 0.15s, border-color 0.15s;
}
.room-row.selected {
  background: #e6efff;
  border-color: #2266ff;
  border-left: 4px solid #2266ff;
  box-shadow: 0 0 0 1px #2266ff33;
}
.color-dot { width:22px; height:22px; border-radius:3px; flex-shrink:0; border:2px solid #aaa; cursor:pointer; padding:0; appearance:none; -webkit-appearance:none; }
.color-dot::-webkit-color-swatch-wrapper { padding:0; border-radius:2px; }
.color-dot::-webkit-color-swatch { border:none; border-radius:2px; }
.room-row input[type="text"]   { width:68px; padding:3px 4px; font-size:.82rem; border:1px solid #ccc; border-radius:2px; }
.room-row input[type="number"] { width:54px; padding:3px 4px; font-size:.82rem; border:1px solid #ccc; border-radius:2px; text-align:right; }
.unit { font-size:.73rem; color:#888; flex-shrink:0; }
.del { margin-left:auto; padding:2px 6px; font-size:.78rem; border:1px solid #c0392b; color:#c0392b; background:#fff; border-radius:2px; cursor:pointer; flex-shrink:0; }
.del:hover { background:#c0392b; color:#fff; }
.lpal-btn { width:22px; height:22px; border:1px solid #aaa; border-radius:3px; cursor:pointer; font-size:11px; font-weight:bold; padding:0; flex-shrink:0; line-height:1; }
.col-header { display:flex; gap:5px; font-size:.7rem; color:#999; margin-bottom:3px; padding-left:20px; }
.sym-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:5px; margin-bottom:10px; }
.sym-btn {
  display:flex; flex-direction:column; align-items:center; gap:2px;
  padding:6px 3px; border-radius:4px; cursor:pointer; font-size:9.5px; color:#444;
  border:1.5px solid #ddd; background:#f8f8f6; transition:all .15s;
  user-select:none;
}
.sym-btn:hover { background:#e8f0ff; border-color:#2a2a2a; }
.sym-btn.active { background:#2a2a2a; color:#fff; border-color:#2a2a2a; }
.sym-icon { font-size:18px; line-height:1; }
.ctrl-row { display:flex; align-items:center; gap:6px; margin-bottom:8px; flex-wrap:wrap; }
.ctrl-label { font-size:.78rem; color:#666; min-width:30px; }
.rot-btn {
  padding:3px 8px; font-size:.78rem; border:1px solid #bbb;
  background:#fff; border-radius:3px; cursor:pointer; transition:all .15s;
}
.rot-btn:hover { background:#e8f0ff; }
.rot-btn.active { background:#2a2a2a; color:#fff; border-color:#2a2a2a; }
.zoom-row { display:flex; align-items:center; gap:8px; }
input[type=range] { flex:1; accent-color:#2a2a2a; }
.zoom-label { font-size:.82rem; color:#333; min-width:38px; text-align:right; font-weight:bold; }
.btn-row { display:flex; gap:7px; flex-wrap:wrap; margin-top:6px; }
button {
  padding:6px 12px; border:1.5px solid #2a2a2a; background:#fff;
  font-size:.82rem; cursor:pointer; border-radius:3px; transition:background .15s,color .15s;
}
button:hover { background:#2a2a2a; color:#fff; }
button.add { border-color:#1a7a40; color:#1a7a40; }
button.add:hover { background:#1a7a40; color:#fff; }
button.danger { border-color:#c0392b; color:#c0392b; }
button.danger:hover { background:#c0392b; color:#fff; }
button.print-btn { border-color:#2471a3; color:#2471a3; }
button.print-btn:hover { background:#2471a3; color:#fff; }
button.undo-btn { border-color:#7d6608; color:#7d6608; }
button.undo-btn:hover { background:#7d6608; color:#fff; }
.palette-swatch {
  width:20px; height:20px; border-radius:3px; cursor:pointer;
  border:2px solid transparent; transition:transform .12s, border-color .12s; flex-shrink:0;
}
.palette-swatch:hover { transform:scale(1.25); border-color:#333; }
.palette-swatch.selected { border-color:#2a2a2a; transform:scale(1.15); }
canvas { border:2px solid #2a2a2a; background:#fff; display:block; box-shadow:4px 4px 0 #bbb; cursor:default; touch-action:none; }
.info { margin-top:7px; font-size:.76rem; color:#888; line-height:1.5; }
.sep { height:1px; background:#eee; margin:8px 0; }

/* フリーハンド・テキスト用のカラー選択 */
.free-color-row { display:flex; align-items:center; gap:6px; margin-bottom:6px; flex-wrap:wrap; }
.free-color-swatch { width:22px; height:22px; border-radius:3px; cursor:pointer; border:2px solid #ccc; flex-shrink:0; }
.free-color-swatch.selected { border-color:#2a2a2a; }
.stroke-width-row { display:flex; align-items:center; gap:6px; margin-bottom:6px; }

/* テキスト入力オーバーレイ */
#textInput {
  position:fixed; display:none; z-index:1000;
  border:2px solid #2266ff; padding:2px 6px;
  font-size:14px; background:rgba(255,255,255,0.95);
  min-width:80px; outline:none; border-radius:2px;
}

/* マニュアル */
.manual {
  background: #fff;
  border: 1.5px solid #bbb;
  border-radius: 4px;
  margin-bottom: 16px;
  max-width: 900px;
}
.manual summary {
  padding: 10px 14px;
  cursor: pointer;
  font-size: .9rem;
  font-weight: bold;
  color: #444;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.manual summary::-webkit-details-marker { display: none; }
.manual summary::after { content: '▼'; font-size: .7rem; color: #999; margin-left: auto; }
.manual[open] summary::after { content: '▲'; }
.manual-body {
  padding: 0 16px 16px;
  font-size: .82rem;
  color: #444;
  line-height: 1.7;
  border-top: 1px solid #eee;
}
.manual-body h3 {
  font-size: .85rem;
  font-weight: bold;
  color: #2a2a2a;
  margin: 14px 0 6px;
  padding-left: 8px;
  border-left: 3px solid #2a2a2a;
}
.manual-body ul { padding-left: 1.2em; }
.manual-body li { margin-bottom: 3px; }
.manual-body .tag {
  display: inline-block;
  background: #f0ece4;
  border: 1px solid #bbb;
  border-radius: 3px;
  padding: 0 5px;
  font-size: .78rem;
  color: #555;
  margin: 0 1px;
}
.manual-body .tip {
  background: #f8f8e8;
  border-left: 3px solid #e6c200;
  padding: 6px 10px;
  margin-top: 8px;
  border-radius: 0 3px 3px 0;
}

/* 全画面モード */
#fs-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  overflow: hidden;
  touch-action: none;
  overscroll-behavior: none;
}
#fs-overlay.active { display: block; }
#fs-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  z-index: 10;
  padding: 5px 9px;
  font-size: 18px;
  line-height: 1;
  background: rgba(255,255,255,0.85);
  border: 1.5px solid #bbb;
  border-radius: 3px;
  cursor: pointer;
  touch-action: none;
}
#fs-close-btn {
  display: none;
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 999999;
  padding: 10px 20px;
  background: rgba(255,255,255,0.95);
  border: 1.5px solid #aaa;
  border-radius: 4px;
  font-size: 0.95rem;
  cursor: pointer;
  pointer-events: all;
}

@media print {
  body { background:#fff; padding:10px; }
  .panels, .info { display:none!important; }
  canvas { border:2px solid #000; box-shadow:none; }
  h2 { margin-bottom:10px; }
}