body {
  background-color: #121212;
  color: #e0e0e0;
  font-family: Arial, sans-serif;
  padding: 20px;
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: auto;
}

.question {
  background-color: #1e1e1e;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 1em;
  margin-bottom: 1.5em;
  position: relative;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1em;
}

.question-header {
  flex: 1 1 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.correct-answer {
  background-color: #1e4620;
  border-left: 6px solid #28a745;
  padding: 10px;
  border-radius: 4px;
  color: #d4f4dc;
}

.incorrect-answer {
  background-color: #4d1c1c;
  border-left: 6px solid #dc3545;
  padding: 10px;
  border-radius: 4px;
  color: #f8d7da;
}

label {
  display: inline-block;
  padding: 5px 10px;
  margin: 3px 0;
  border-radius: 4px;
  cursor: pointer;
}

button {
  background-color: #333;
  color: #fff;
  padding: 12px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #555;
}

#submitBtn:hover {
  background-color: #119a41;
}

.nav-buttons {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  gap: 20px;
}

.nav-group {
  display: flex;
  gap: 10px;
}

.submit-group {
  margin-left: auto;
}

#results {
  margin-top: 30px;
  font-size: 18px;
}

#quizForm > .question {
  display: block;
  position: relative;
}

.flag-button-wrapper {
  margin-left: 690px;
}

.flag-button {
  background-color: #444;
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.flag-button.flagged {
  background-color: #1e1e1e;
}

.question.submitted .flag-button-wrapper {
  display: none;
}

.selected-answer {
  outline: 2px solid #888;
}

.correct {
  background-color: #119a41 !important;
}

.incorrect {
  background-color: #e6465a !important;
}

.flagged-question-label {
  font-weight: bold;
  color: #e6465a;
  margin-top: 10px;
}

.start-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.55);
  z-index: 1000;
}
.start-card {
  background: #1e1e1e;
  color: #e0e0e0;
  padding: 24px 28px;
  border-radius: 12px;
  max-width: 520px;
  width: 92%;
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
  text-align: center;
}
.start-card h1 { margin: 0 0 8px; font-size: 1.4rem; }
.start-card p { margin: 0 0 18px; color: #bcbcbc; }
.choices { display: flex; gap: 12px; justify-content: center; }
.choices button {
  padding: 10px 14px; border: 0; border-radius: 8px; cursor: pointer;
  background: #2b2b2b; color: #fff;
}
.choices button:hover { background: #3a3a3a; }