body {
  font-family: Arial, sans-serif;
  background: #f5f7fa;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  color: #0070f3;
}

.input-section, .algorithm {
  text-align: center;
  margin: 20px 0;
}

input, select, button {
  margin: 5px;
  padding: 8px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

button {
  background: #0070f3;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #005bb5;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

th, td {
  border: 1px solid #ddd;
  text-align: center;
  padding: 8px;
}

#gantt {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
}

.gantt-block {
  background: #0070f3;
  color: white;
  margin: 2px;
  padding: 10px;
  border-radius: 4px;
}