@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

 :root {
     /* Restored Theme */
     --primary-color: #de9406;
     --secondary-color: #de9406;
     --background-color: #fcf3e4;
     --card-background: #FFFFFF;
     --text-color: #333333;
     --label-color: #666666;
     --border-color: #e0e0e0;
     --shadow-color: rgba(0, 0, 0, 0.1);
     --danger-color: #e74c3c;
 }

 * {
     box-sizing: border-box;
     margin: 0;
     padding: 0;
 }

#ppf-calculator.container-pff-calculator {
  font-family: "Inter", sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: 2rem;
}
#ppf-calculator.container-pff-calculator .containerr {
  width: 100%;
  max-width: 1200px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 1024px) {
  #ppf-calculator.container-pff-calculator .containerr {
    grid-template-columns: 1fr 1fr;
  }
}
#ppf-calculator.container-pff-calculator .card {
  background: var(--card-background);
  border-radius: 12px;
  box-shadow: 0 4px 12px var(--shadow-color);
  padding: 2rem;
}
#ppf-calculator.container-pff-calculator h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
}
#ppf-calculator.container-pff-calculator h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-color);
}
#ppf-calculator.container-pff-calculator .input-group {
  margin-bottom: 1.5rem;
}
#ppf-calculator.container-pff-calculator label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--label-color);
}
#ppf-calculator.container-pff-calculator input[type=number] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  background-color: #ffffff;
  color: var(--text-color);
  transition: border-color 0.3s, box-shadow 0.3s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
#ppf-calculator.container-pff-calculator input[type=number]:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 1px 5px rgba(255, 153, 0, 0.2);
}
#ppf-calculator.container-pff-calculator .btn-group {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}
#ppf-calculator.container-pff-calculator .btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.1s;
}
#ppf-calculator.container-pff-calculator .btn-primary {
  background-color: var(--secondary-color);
  background-image: none;
  color: white;
}
#ppf-calculator.container-pff-calculator .btn-primary:hover {
  background-color: #d18d05;
}
#ppf-calculator.container-pff-calculator .btn-primary:active {
  transform: scale(0.98);
}
#ppf-calculator.container-pff-calculator .btn-secondary {
  background-color: var(--primary-color);
  color: white;
}
#ppf-calculator.container-pff-calculator .btn-secondary:hover {
  background-color: #d18d05;
}
#ppf-calculator.container-pff-calculator .btn-secondary:active {
  transform: scale(0.98);
}
#ppf-calculator.container-pff-calculator .results {
  margin-top: 2rem;
}
#ppf-calculator.container-pff-calculator .result-item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}
#ppf-calculator.container-pff-calculator .result-item:last-child {
  border-bottom: none;
}
#ppf-calculator.container-pff-calculator .result-label {
  font-weight: 600;
}
#ppf-calculator.container-pff-calculator .result-value {
  font-weight: 700;
}
#ppf-calculator.container-pff-calculator .result-value.total-investment {
  color: var(--primary-color);
}
#ppf-calculator.container-pff-calculator .result-value.total-interest {
  color: #27ae60;
}
#ppf-calculator.container-pff-calculator .result-value.maturity-value {
  color: var(--secondary-color);
}
#ppf-calculator.container-pff-calculator #annual-data-container {
  margin-top: 2rem;
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
}
#ppf-calculator.container-pff-calculator #ppf-form{
  display: flex;
  flex-direction: column;
  gap: 2px;
}
#ppf-calculator.container-pff-calculator .year-entry {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
#ppf-calculator.container-pff-calculator .year-entry label {
  min-width: 60px;
}
#ppf-calculator.container-pff-calculator .year-entry input {
  flex-grow: 1;
}
#ppf-calculator.container-pff-calculator .year-entry .delete-btn {
  background-color: var(--danger-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.25rem;
  cursor: pointer;
  transition: background-color 0.3s;
}
#ppf-calculator.container-pff-calculator .year-entry .delete-btn:hover {
  background-color: #9b2c2c;
}
#ppf-calculator.container-pff-calculator #chart-container {
  width: 100%;
  height: 60vh;
  min-height: 400px;
  margin-top: 2rem;
  position: relative;
}
#ppf-calculator.container-pff-calculator .info-panel {
  background-color: var(--card-background);
  border-radius: 12px;
  box-shadow: 0 4px 12px var(--shadow-color);
  padding: 2rem;
  margin-top: 2rem;
}
#ppf-calculator.container-pff-calculator .info-panel p {
  font-size: 0.9rem;
  color: var(--label-color);
  margin-bottom: 1rem;
}
#ppf-calculator.container-pff-calculator .info-panel h3 {
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}
#ppf-calculator.container-pff-calculator .info-panel ul {
  list-style-type: disc;
  padding-left: 1.5rem;
}
#ppf-calculator.container-pff-calculator .info-panel li {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}