:root {
  --primary: #4a6fa5;
  --secondary: #6fb1e4;
  --accent: #ff7e5f;
  --light: #f4f7fb;
  --dark: #2d3748;
  --success: #48bb78;
  --warning: #f6ad55;
  --error: #f56565;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--light);
  color: var(--dark);
  line-height: 1.6;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  padding: 30px;
}

h1 {
  color: var(--primary);
  text-align: center;
  margin-bottom: 20px;
}

.instruccions {
  background-color: var(--light);
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 25px;
  border-left: 4px solid var(--secondary);
}

.verb-container {
  margin-bottom: 25px;
  padding: 20px;
  border-radius: 8px;
  background-color: #f9f9f9;
  border: 1px solid #e1e1e1;
}

.verb-prompt {
  font-size: 1.5em;
  font-weight: bold;
  color: var(--primary);
  text-align: center;
  margin-bottom: 15px;
}

.form-group {
  margin-bottom: 15px;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: var(--dark);
}

input[type="text"] {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 16px;
}

.btn {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  display: block;
  margin: 20px auto 0;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: var(--secondary);
}

.result {
  margin-top: 25px;
  padding: 15px;
  border-radius: 8px;
  display: none;
}

.correct {
  background-color: rgba(72, 187, 120, 0.2);
  border: 1px solid var(--success);
}

.partial {
  background-color: rgba(246, 173, 85, 0.2);
  border: 1px solid var(--warning);
}

.incorrect {
  background-color: rgba(245, 101, 101, 0.2);
  border: 1px solid var(--error);
}

.result-title {
  font-weight: bold;
  margin-bottom: 10px;
}

.correct-answers {
  display: flex;
  flex-wrap: wrap;
  margin-top: 15px;
}

.answer-item {
  flex: 1 0 50%;
  padding: 5px;
}

.answer-label {
  font-weight: bold;
  color: var(--primary);
}

.statistics {
  display: flex;
  justify-content: space-around;
  margin: 25px 0;
  padding: 15px;
  background-color: var(--light);
  border-radius: 8px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 1.5em;
  font-weight: bold;
  color: var(--primary);
}

.next-button {
  background-color: var(--accent);
}

.next-button:hover {
  background-color: #ff6347;
}

@media (max-width: 600px) {
  .container {
      padding: 15px;
  }
  
  .answer-item {
      flex: 1 0 100%;
  }
}