.fd-container {max-width:1000px;margin:auto;padding:20px;}

/* TOP */
.top-section {
  display:flex;
  gap:40px;
  flex-wrap:wrap;
}

.fd-inputs {flex:1;}
.fd-chart {flex:1; display:flex; justify-content:center; align-items:center;}

label {display:block;margin-top:15px;font-weight:600;}
input[type=range]{width:100%;}
.value {font-weight:bold;margin-top:5px;}

select {
  width:100%;
  padding:8px;
  margin-top:5px;
  border-radius:6px;
  border:1px solid #ccc;
}

/* TOGGLE */
.toggle {display:flex;gap:10px;margin-bottom:20px;}
.toggle button {
  flex:1;
  padding:10px;
  border:none;
  border-radius:8px;
  background:#eee;
  cursor:pointer;
}
.toggle button.active {
  background:#00b386;
  color:#fff;
}

/* RESULTS GRID */
.results-grid {
  margin-top:30px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:15px;
}

.box {
  background:#f5f7fa;
  padding:15px;
  border-radius:10px;
  text-align:center;
}

.highlight {
  background:#e6f4ea;
}

canvas {max-width:100%;}

@media(max-width:768px){
  .top-section {flex-direction:column;}
  .results-grid {grid-template-columns:1fr;}
}