:root {
  --main-color: #1d3557;
  --accent-color: #457b9d;
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --text-color: #212529;
  --success-color: #28a745;
  --warning-color: #ffc107;
}

body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 1em;
  background: var(--bg-color);
  color: var(--text-color);
  max-width: 900px;
  margin: auto;
}

h1, h2 {
  color: var(--main-color);
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 5px;
}

input, select, textarea {
  width: 100%;
  padding: 10px;
  margin-top: 6px;
  margin-bottom: 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1em;
  box-sizing: border-box;
}

button {
  background-color: var(--main-color);
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 6px;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
  margin-top: 20px;
}

button:hover {
  background-color: var(--accent-color);
  transform: scale(1.03);
}

.question-card {
  background: var(--card-bg);
  padding: 20px;
  margin: 20px 0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  border-radius: 8px;
}

.fade-in {
  animation: fadeIn 1.5s ease-in-out;
}

@keyframes fadeIn {
  from {opacity: 0; transform: scale(0.95);}
  to {opacity: 1; transform: scale(1);}
}

@keyframes pulse {
  0% { opacity: 0.3; }
  50% { opacity: 1; }
  100% { opacity: 0.3; }
}

#loadingMessage {
  animation: pulse 1.5s infinite ease-in-out;
}

.warning-message {
  background-color: #fff3cd;
  border: 1px solid #ffeaa7;
  border-radius: 4px;
  padding: 8px 12px;
  margin-top: 10px;
  color: #856404;
  font-size: 0.9em;
}

.results-container {
  background: var(--card-bg);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  text-align: center;
  margin-top: 20px;
}

.results-title {
  color: var(--success-color);
  font-size: 2.5em;
  margin-bottom: 20px;
}

.results-score {
  font-size: 1.5em;
  margin: 15px 0;
}

.results-evaluation {
  background-color: #e7f3ff;
  border: 1px solid #b8daff;
  border-radius: 6px;
  padding: 15px;
  margin: 20px 0;
  font-size: 1.1em;
}

.hashtag {
  font-size: 1.3em;
  color: var(--accent-color);
  font-style: italic;
  margin-top: 25px;
}

.answers-review {
  margin-top: 30px;
}

.answers-review h3 {
  text-align: center;
  color: var(--main-color);
  margin-bottom: 20px;
  font-size: 1.5em;
}

.answer-item {
  padding: 15px;
  margin: 15px 0;
  border-radius: 8px;
  border-left: 5px solid;
}

.answer-item.correct {
  background-color: #d4edda;
  border-color: var(--success-color);
}

.answer-item.incorrect {
  background-color: #f8d7da;
  border-color: #dc3545;
}

.answer-item p {
  margin-bottom: 10px;
}

.answer-item strong {
  color: var(--main-color);
}

.user-answer, .correct-answer {
  padding: 10px;
  border-radius: 6px;
  margin-top: 8px;
  font-weight: bold;
}

.user-answer.correct {
  background-color: var(--success-color);
  color: white;
}

.user-answer.incorrect {
  background-color: #dc3545;
  color: white;
}

.correct-answer {
  background-color: var(--success-color);
  color: white;
}

@media (max-width: 600px) {
  body {
    padding: 1em;
  }
  .results-title {
    font-size: 2em;
  }
  .results-score {
    font-size: 1.2em;
  }
}