/* Helles, SketchUp-artiges Theme (Nutzerwunsch 2026-08-10): weisse/hellgraue
   Toolbar und Panels, dunkler Text, Status-Leisten-Massanzeige unten statt
   dunkler Glas-Optik. */
:root{
  --bg: #eceae6;
  --panel: #ffffff;
  --panel-2: #f3f2ef;
  --border: #d8d5cd;
  --text: #2b2a27;
  --text-soft: #6b6862;
  --text-faint: #9b9890;
  --accent: #1b6ef2;
  --accent-soft: #e8f0fe;
  --danger: #c8362a;
}
*{ box-sizing: border-box; }
html, body{ margin: 0; height: 100%; overflow: hidden; background: var(--bg); color: var(--text); font-family: system-ui, "Segoe UI", sans-serif; }

#viewport{ position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

.toolbar{
  position: fixed; top: 12px; left: 12px; right: 12px; z-index: 10;
  display: flex; gap: 4px; flex-wrap: wrap; align-items: center;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 5px;
  box-shadow: 0 2px 8px rgba(30,28,20,0.08);
}
.toolbar-sep{ width: 1px; height: 22px; background: var(--border); margin: 0 3px; flex-shrink: 0; }
.tool-btn{
  border: 1px solid transparent; background: none; color: var(--text-soft);
  border-radius: 6px; padding: 7px 11px; font-size: 13px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; font-family: inherit;
}
.tool-btn:hover{ background: var(--panel-2); color: var(--text); }
.tool-btn.active{ background: var(--accent-soft); color: var(--accent); border-color: var(--accent); font-weight: 600; }

.elevation-bar{
  position: fixed; top: 12px; left: 12px; right: 12px; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px;
  box-shadow: 0 2px 8px rgba(30,28,20,0.08);
}
.elevation-hint{ color: var(--text-faint); font-size: 12.5px; }

/* .toolbar/.elevation-bar setzen selbst "display: flex" - das gewinnt sonst
   gegen die "display: none"-Regel des [hidden]-Attributs im
   User-Agent-Stylesheet (gleiche Spezifitaet, Autoren-CSS zuletzt in der
   Kaskade), das Element bliebe trotz hidden=true sichtbar. */
.toolbar[hidden], .elevation-bar[hidden]{ display: none; }

/* Status-Leisten-artige Massanzeige unten (an SketchUps "Measurements"-Box
   angelehnt) statt zentrierter dunkler Pille. */
.draw-hint{
  position: fixed; bottom: 14px; right: 14px; z-index: 10;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 16px; font-size: 14px; font-weight: 600;
  box-shadow: 0 2px 8px rgba(30,28,20,0.08); white-space: nowrap; font-variant-numeric: tabular-nums;
}

.dimension-labels{ position: fixed; inset: 0; pointer-events: none; z-index: 5; }
.dimension-label{
  position: absolute; transform: translate(-50%, -50%);
  background: var(--panel); border: 1px solid var(--border); border-radius: 4px;
  padding: 1px 6px; font-size: 11.5px; font-weight: 600; color: var(--accent);
  white-space: nowrap;
}

.properties-panel{
  position: fixed; top: 64px; right: 12px; bottom: 12px; z-index: 10; width: 300px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 16px; overflow-y: auto; box-shadow: 0 2px 8px rgba(30,28,20,0.08);
}
.properties-panel h3{ margin: 0 0 12px; font-size: 14px; }
.properties-panel h4{ margin: 4px 0 8px; font-size: 11.5px; color: var(--text-soft); text-transform: uppercase; letter-spacing: 0.03em; }
.properties-panel hr{ border: none; border-top: 1px solid var(--border); margin: 14px 0; }
.properties-panel label{ display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--text-soft); margin-bottom: 10px; }
.properties-panel input, .properties-panel select{
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 5px; color: var(--text);
  padding: 6px 8px; font-size: 13px; font-family: inherit;
}
.properties-panel input:focus, .properties-panel select:focus{ outline: none; border-color: var(--accent); }
.properties-panel button.danger{
  width: 100%; margin-top: 4px; border: 1px solid var(--danger); background: none; color: var(--danger);
  border-radius: 6px; padding: 8px; font-size: 13px; cursor: pointer; font-family: inherit;
}
.properties-panel button.danger:hover{ background: var(--danger); color: #fff; }
.properties-panel .hint{ color: var(--text-faint); font-size: 11.5px; font-style: italic; margin: 0 0 10px; line-height: 1.4; }

.opening-row{ border: 1px solid var(--border); border-radius: 6px; padding: 8px; margin-bottom: 6px; background: var(--panel-2); }
.opening-row-head{ display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.opening-row-head select{ flex: 1; }
.opening-row .op-delete{
  border: none; background: none; color: var(--text-faint); cursor: pointer; font-size: 15px;
  line-height: 1; padding: 2px 4px; flex-shrink: 0;
}
.opening-row .op-delete:hover{ color: var(--danger); }
.opening-fields{ display: grid; grid-template-columns: 1fr 1fr; gap: 5px 8px; }
.opening-fields label{ margin-bottom: 0; font-size: 11px; }
.opening-fields input{ padding: 4px 6px; font-size: 12px; }

@media (max-width: 700px){
  .properties-panel{ left: 12px; right: 12px; top: auto; bottom: 12px; width: auto; max-height: 42vh; }
  .draw-hint{ bottom: calc(42vh + 14px); }
}