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

:root {
  --bg-light: linear-gradient(135deg, #d9e4f5, #f7f9fc);
  --container-bg-light: #ffffff;
  --button-bg-light: #f1f3f7;
  --button-hover-light: #4f8df9;
  --text-light: #333333;
  
  --bg-dark: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  --container-bg-dark: #1e293b;
  --button-bg-dark: #334155;
  --button-hover-dark: #3b82f6;
  --text-dark: #f1f5f9;
  --correct: #16a34a;
  --wrong: #dc2626;
}

body {
  margin: 0;
  padding: 0;
  height: 100vh;
  background: var(--bg-light);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'Poppins', sans-serif;
  transition: background 0.5s ease;
}

#quiz-container {
  background: var(--container-bg-light);
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  max-width: 600px;
  width: 90%;
  text-align: center;
  animation: fadeIn 0.8s ease;
  transition: background 0.5s ease;
}

#question {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-light);
  transition: color 0.5s ease;
}

#question-counter {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 10px;
}

.option-button {
  display: block;
  width: 100%;
  background: var(--button-bg-light);
  border: none;
  border-radius: 12px;
  padding: 14px 20px;
  margin: 12px 0;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.option-button:hover {
  background: var(--button-hover-light);
  color: white;
  transform: translateY(-2px);
}

.option-button.correct {
  background-color: var(--correct) !important;
  color: white;
}

.option-button.wrong {
  background-color: var(--wrong) !important;
  color: white;
}

#navigation-buttons {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
}

#navigation-buttons button {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  font-weight: 500;
  cursor: pointer;
  background: var(--button-bg-light);
  transition: background 0.3s ease;
}

#navigation-buttons button:hover {
  background: var(--button-hover-light);
  color: white;
}

h2, p {
  color: var(--text-light);
  transition: color 0.5s ease;
}

/* Dark Mode Overrides */
html.manual-dark-mode body {
  background: var(--bg-dark);
}

html.manual-dark-mode #quiz-container {
  background: var(--container-bg-dark);
}

html.manual-dark-mode #question,
html.manual-dark-mode #question-counter,
html.manual-dark-mode h2,
html.manual-dark-mode p {
  color: var(--text-dark);
}

html.manual-dark-mode .option-button {
  background: var(--button-bg-dark);
  color: var(--text-dark);
}

html.manual-dark-mode .option-button:hover {
  background: var(--button-hover-dark);
  color: white;
}

html.manual-dark-mode #navigation-buttons button {
  background: var(--button-bg-dark);
  color: var(--text-dark);
}