* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f3f4f6;
  color: #222;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr 360px;
  gap: 16px;
  padding: 16px;
  min-height: 100vh;
  background: #121314;
}

.panel {
  background: #26282B;
  padding: 14px;
  border-radius: 6px;
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 18px;
  color: #d6d6d6;
}

.left-panel, .right-panel {
  overflow-y: auto;
}

label {
  display: block;
  margin: 10px 0 6px;
  font-weight: bold;
  color: #d6d6d6;
}

select,textarea,input {
  width: 100%;
  font-size: 15px;
  padding: 8px;
  color: #d6d6d6;
  background: #191A1C;
  border: 1px solid #414141;
  border-radius: 6px;
}

textarea {
  min-height: 170px;
  resize: vertical;
  font-family: Consolas, monospace;
  line-height: 1.4;
}


button {
  padding: 9px 12px;
  border: 1px solid #414141;
  border-radius: 6px;
  background: #204b75;
  color: #ececec;
  font-size: 14px;
}

button:hover {
  background: #1675ce;
}

.secondary-btn {
  background: #204b75;
}

.run-btn {
  width: 100%;
  margin-top: 12px;
  background: #5b6dac;
}

.run-btn:hover {
  background: #758cdf;
}

.button-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.button-row button {
  flex: 1;
}

.algorithm-controls {
  margin-top: 10px;
  padding: 10px;
  color: white;
  background: #191A1C;
  border: 1px solid #414141;
  border-radius: 6px;
  font-size: 14px;
}

.graph-panel {
  display: grid;
}

#graph {
  border: 1px solid #414141;
  border-radius: 6px;
  width: 100%;
  height: 530px;
  background: #191A1C;
}

#table{
  overflow-x: auto;
}

.result-output {
  border: 1px solid #414141;
  border-radius: 6px;
  min-height: 220px;
  padding: 10px;
  background: #191A1C;
  color: #d6d6d6;
  white-space: pre-wrap;
  line-height: 1.4;
}

table {
  width: 100%;
  border-collapse: collapse;
  color: #d6d6d6;
}

th,td {
  border: 1px solid #6a6a6a;
  background: #191A1C;
  padding: 6px;
  text-align: center;
}

.changed-cell {
  font-weight: bold;
  background: #7083a8;
}

.small-note {
  margin: 8px 0 0;
  font-size: 13px;
  color: #d8d8d8;
  line-height: 1.4;
}

.generator-settings {
  margin-top: 10px;
  padding: 10px;
  border: 1px solid #414141;
  border-radius: 6px;
  color: #d6d6d6;
  background: #191A1C;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-weight: normal;
}

.checkbox-label input {
  width: auto;
}

.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.selected-cell {
  font-weight: bold;
  background: #3b4557;
}

.infinity-cell {
  color: #777;
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }
  #graph {
    height: 450px;
  }
}