/* Grundlayout --------------------------------------------------------- */

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               sans-serif;
  background: #000; /* wird vom p5-Canvas überdeckt */
}

/* Canvas nimmt den gesamten Bereich ein */
canvas {
  display: block;
}

/* Control-Leiste ------------------------------------------------------ */

#controls {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-wrap: nowrap;          /* immer einzeilig */
  gap: 20px;
  align-items: center;

  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(20, 20, 20, 0.88);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(12px);
  color: #f5f5f5;
  z-index: 10;
}

.toggle-group {
  display: flex;
  gap: 12px;
  align-items: center;
}

.button-group {
  display: flex;
  gap: 8px;
}

/* Toggle-Checkboxen --------------------------------------------------- */

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  opacity: 0.95;
}

.toggle.disabled {
  opacity: 0.45;
}

#controls input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: #19b4ff; /* moderne Farbgebung */
}

.toggle-label {
  cursor: pointer;
}

/* Buttons ------------------------------------------------------------- */

.btn {
  border: none;
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 0.9rem;
  cursor: pointer;

  background: #333;
  color: #f5f5f5;
  transition: background 0.15s ease, transform 0.1s ease,
              box-shadow 0.15s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
}

.btn.primary {
  background: linear-gradient(135deg, #19b4ff, #4f9dff);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.6);
  background: #444;
}

.btn.primary:hover {
  background: linear-gradient(135deg, #33c3ff, #6caeff);
}

.btn:active {
  transform: translateY(0px) scale(0.98);
  box-shadow: 0 3px 8px rgba(0,0,0,0.6);
}

/* Responsive Anpassung ----------------------------------------------- */

@media (max-width: 600px) {
  #controls {
    top: 6px;
    padding: 6px 10px;
    gap: 10px;
    font-size: 0.8rem;
  }

  .toggle-group {
    gap: 8px;
  }

  .toggle-label {
    font-size: 0.8rem;
  }

  .btn {
    padding: 4px 10px;
    font-size: 0.8rem;
  }

  .button-group {
    justify-content: flex-end;
  }
}