html, body {
  margin: 0;
  font-family: sans-serif;
  background: #f9f9f9;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

h1 {
  margin: .5rem;
  font-size: 1.3rem;
  text-align: left;
}

/* obere Einstellungszeile */
#settingsRow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  padding: .5rem 1rem;
  background: #fafafa;
}
#settingsRow button {
  padding: .3rem .6rem;
  border: 1px solid #999;
  border-radius: 4px;
  background: #eee;
  cursor: pointer;
}
#settingsRow button:hover { background: #ddd; }

/* Hauptlayout: Blockly – Controls – Canvas */
#mainLayout {
  flex: 1 1 auto;
  display: flex;
  flex-direction: row;
  gap: .25rem;
  padding: 0 .5rem;
  overflow: hidden;
}

/* Blockly links */
#blocklyDiv {
  flex: 2 1 0;
  min-width: 400px;
  max-width: 700px;
  border: 1px solid #ccc;
  background: #fff;
  box-sizing: border-box;
}

/* Steuerung mittig */
#controls {
  flex: 0 0 60px;   /* schmale Spalte */
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

/* Slider hochkant */
.slider-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  height: 180px;
  margin-bottom: 1.5rem;
}
#timeoutSlider {
  writing-mode: bt-lr;
  -webkit-appearance: slider-vertical;
  width: 8px;
  height: 120px;
}
.speed-icon { font-size: 1.2rem; }

/* Quadratische Buttons */
#controls button {
  width: 48px;
  height: 48px;
  font-size: 1.2rem;
  border: 1px solid #999;
  border-radius: 6px;
  background: #eee;
  cursor: pointer;
}
#controls button:hover { background: #ddd; }

/* Canvas rechts */
#tileCanvas {
  align-self: flex-start;       /* Canvas bleibt oben in der Spalte */
  border: 1px solid #ccc;
  background: #fff;
  display: block;
  image-rendering: pixelated;   /* klare Kanten */
  width: auto;                  /* keine Verzerrung */
  height: auto;
  max-width: 100%;              /* passt sich Elternbreite an */
  max-height: 100%;
}

/* Untere Buttonreihe */
#bottomControls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: .5rem;
  padding: .5rem 1rem;
  background: #fafafa;
}
#bottomControls button {
  flex: 0 0 auto;
  width: 180px;
  padding: .4rem .6rem;
  border: 1px solid #999;
  border-radius: 4px;
  background: #eee;
  text-align: center;
  height: 40px;
}
#bottomControls button:hover { background: #ddd; }