:root {
  --primary-color: #e67e22; /* Naranja deportivo */
  --secondary-color: #d35400;
  --correct-color: #4caf50;
  --incorrect-color: #f44336;
  --selected-color: #2196f3;
  --light-bg: #f8f9fa;
  --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #2c3e50, #e67e22);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
}

.quiz-container {
  background: white;
  border-radius: 15px;
  box-shadow: var(--shadow);
  width: 90%;
  max-width: 700px;
  padding: 30px;
}

header h1 { text-align: center; color: var(--primary-color); }

.quiz-info {
  display: flex;
  justify-content: space-between;
  margin: 20px 0;
  font-weight: bold;
}

.progress-container {
  width: 100%;
  height: 12px;
  background: #eee;
  border-radius: 6px;
  margin-bottom: 20px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary-color);
  width: 0%;
  transition: width 0.4s ease;
}

#question { font-size: 1.4rem; margin-bottom: 20px; font-weight: 500; }

#choices { display: flex; flex-direction: column; gap: 10px; }

.choice {
  padding: 15px;
  background: var(--light-bg);
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

.choice:hover { background: #e0e0e0; }
.choice.selected { border-color: var(--selected-color); background: #e3f2fd; }
.choice.correct { background: #d4edda; border-color: var(--correct-color); }
.choice.incorrect { background: #f8d7da; border-color: var(--incorrect-color); }

button {
  width: 100%;
  padding: 15px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  margin-top: 20px;
}

button:disabled { background: #ccc; cursor: not-allowed; }

.hidden { display: none; }
.score-box { font-size: 1.5rem; margin: 20px 0; }