* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 20px;
  font-family: Arial, sans-serif;
  background: #f4f8ff;
}

.fc-wrapper {
  max-width: 1100px;
  margin: auto;
}

.fc-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.08);
}

.fc-header {
  text-align: center;
  margin-bottom: 35px;
}

.fc-header h1 {
  margin: 0;
  font-size: 36px;
  color: #1565c0;
}

.fc-header p {
  margin-top: 8px;
  color: #666;
  font-size: 16px;
}

.fc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 35px;
}

.fc-left,
.fc-right {
  background: #fafcff;
  border-radius: 16px;
  padding: 25px;
  border: 1px solid #e6edf8;
}

.fc-group {
  margin-bottom: 30px;
}

.fc-group label {
  display: block;
  font-weight: bold;
  margin-bottom: 10px;
  color: #333;
}

.fc-group input[type="number"] {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  border: 1px solid #ccd8ea;
  border-radius: 10px;
  margin-bottom: 12px;
}

.fc-group input[type="range"] {
  width: 100%;
  cursor: pointer;
}

.result-box {
  background: white;
  border: 1px solid #e3ebf8;
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 20px;
}

.result-box h3 {
  margin: 0 0 10px;
  font-size: 15px;
  color: #666;
}

.result-box div {
  font-size: 30px;
  font-weight: bold;
  color: #1565c0;
}

.bar-wrap {
  margin-top: 30px;
}

.bar {
  width: 100%;
  height: 26px;
  display: flex;
  border-radius: 30px;
  overflow: hidden;
  background: #e5eaf2;
}

#investedBar {
  width: 50%;
  background: #1565c0;
  transition: width 0.4s ease;
}

#returnsBar {
  width: 50%;
  background: #4fc3f7;
  transition: width 0.4s ease;
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .fc-card {
    padding: 18px;
  }

  .fc-grid {
    grid-template-columns: 1fr;
  }

  .fc-header h1 {
    font-size: 28px;
  }

  .result-box div {
    font-size: 24px;
  }
}