:root {
  --primary-color: #14fa1c;
  --error-color: #ec0c2a;
  --text-color: #ffffff;
  --bg-color: #021526;
  --card-bg: #021529;
}

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

body {
  font-family: "Poppins", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  min-height: 100vh;
}

.quiz-app {
  background: var(--card-bg);
  border-radius: 18px;
  max-width: 700px;
  width: 100%;
  padding: 30px;
  box-shadow: 0 0 20px rgba(0, 128, 255, 0.5);
}

.quiz-title {
  color: #14fa1c;
  position: relative;
  text-align: center;
  font-family: 'Times New Roman', Times, serif;
  font-weight: bold;
  font-size: 27px;
  margin-bottom: 20px;
}

.question-header {
  text-align: center;
  margin-bottom: 16px;
}

.question-counter {
  color: rgba(255, 255, 255, 0.7);
  font-weight: bold;
  margin-bottom: 9px;
  padding-bottom: 3px;
}

.question-text {
  font-size: 20px;
  font-weight: bold;
}

.progress-indicator {
  margin: 0 auto 20px;
  width: 80px;
  height: 80px;
}

.progress-circle {
  transform: rotate(-90deg);
}

.progress-bg,
.results-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.15);
  stroke-width: 8;
}

.progress-fill,
.results-fill {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 226.19467;
  stroke-dashoffset: 226.19467;
  transition: stroke-dashoffset 0.5s ease;
}

.progress-percent,
.results-percent {
  fill: var(--text-color);
  font-size: 16px;
  font-weight: bold;
  text-anchor: middle;
  dominant-baseline: middle;
  transform: rotate(90deg);
  transform-origin: center;
}

.answer-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.option-button {
  padding: 12px;
  border: 2px solid rgb(186, 171, 241);
  background: transparent;
  color: var(--text-color);
  border-radius: 20px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

.option-button:hover {
  background: rgba(255, 255, 255, 0.1);
}

.option-button.correct {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.option-button.incorrect {
  background: var(--error-color);
  border-color: var(--error-color);
  color: white;
}

.option-button.disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.results-area {
  display: none;
  text-align: center;
}

.results-area.visible {
  display: block;
}

.results-title {
  font-size: 24px;
  margin-bottom: 20px;
}

.results-circle {
  transform: rotate(-90deg);
  margin: 0 auto 24px;
}

.results-fill {
  stroke-width: 10;
  stroke-dasharray: 339.292;
  stroke-dashoffset: 339.292;
}

.restart-button{
  margin: 8px;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: bold;
  color: white;
  background: #0404f5;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  transition: background 0.3s ease;

  .back{
    text-decoration: none;
    color: white;
  }
}

.restart-button:hover {
  background: #43a047;
}
.improve{
  font-family: 'Times New Roman', Times, serif;
  text-align: center;
  padding-top: 1.4rem;
  color: #3cddfa;
}

#rocket{
  width: 1.7rem;
  margin: 0.7rem;
}

#paypal,#link{
  margin: 8px;
  padding: 12px 24px;
  font-size: 17px;
  font-weight: bold;
  color: rgb(169, 156, 241);
  background: #010113;
  border: none;
  box-shadow: 0px 2px 3px 3px #037e9c;
  border-radius: 25px;
  cursor: pointer;
  transition: background 0.3s ease;
  text-decoration: none; 
}

@media (max-width: 600px) {
  .answer-options {
    grid-template-columns: 1fr;
  }
}