/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Fredoka+One&family=Nunito:wght@400;700&display=swap');

:root {
  --primary-color: #6C63FF; /* Deep Indigo */
  --secondary-color: #FF6584; /* Hot Pink */
  --accent-color: #F9A826; /* Bright Yellow */
  --success-color: #00C851; /* Emerald Green */
  --danger-color: #FF4444; /* Red */
  --background-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --text-color: #ffffff;
  --font-heading: 'Fredoka One', cursive;
  --font-body: 'Nunito', sans-serif;
}

body {
  font-family: var(--font-body);
  background: var(--background-gradient);
  color: var(--text-color);
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow: hidden;
}

.container {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  width: 90%;
  max-width: 600px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: transform 0.3s ease;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.input-group {
  margin-bottom: 1.5rem;
}

input[type="text"] {
  width: 80%;
  padding: 15px;
  border-radius: 50px;
  border: none;
  font-size: 1.2rem;
  text-align: center;
  font-family: var(--font-body);
  outline: none;
  transition: box-shadow 0.3s ease;
}

input[type="text"]:focus {
  box-shadow: 0 0 15px var(--accent-color);
}

button {
  cursor: pointer;
  border: none;
  border-radius: 50px;
  padding: 15px 30px;
  font-size: 1.2rem;
  font-family: var(--font-heading);
  text-transform: uppercase;
  transition: transform 0.2s, box-shadow 0.2s;
  color: white;
}

button:hover {
  transform: scale(1.05); /* Bounce effect */
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

button:active {
  transform: scale(0.95);
}

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

.btn-secondary {
  background-color: var(--accent-color);
  color: #333;
}

/* Quiz Section */
.header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
  font-weight: bold;
  font-size: 1.1rem;
}

.timer-box, .score-box {
  background: rgba(0, 0, 0, 0.2);
  padding: 5px 15px;
  border-radius: 15px;
}

.progress-bar {
  width: 100%;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  margin-bottom: 20px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}

.options-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.option-btn {
  background: white;
  color: #333;
  text-align: left; 
  padding: 15px 20px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: bold;
  transition: all 0.2s;
}

.option-btn:hover {
  background: #f0f0f0;
  transform: translateX(5px); 
}

/* Specific feedback classes */
.option-btn.correct {
  background-color: var(--success-color);
  color: white;
  animation: pulse 0.5s;
}

.option-btn.wrong {
  background-color: var(--danger-color);
  color: white;
  animation: shake 0.5s;
}

/* Leaderboard */
.leaderboard-list {
  background: rgba(255, 255, 255, 0.9);
  color: #333;
  border-radius: 15px;
  padding: 15px;
  margin-bottom: 20px;
  max-height: 300px;
  overflow-y: auto;
}

.leaderboard-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.leaderboard-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px;
  border-bottom: 1px solid #ddd;
}

.leaderboard-list li:last-child {
  border-bottom: none;
}

.leaderboard-list li span {
  font-weight: bold;
}

/* Utility */
.hidden {
  display: none !important;
}

/* Animations */
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes shake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-5px); }
  100% { transform: translateX(0); }
}