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

body {
  background-color: #f5f5f5;
  color: #333;
}

.app-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

.nav-container {
  display: flex;
  justify-content: flex-end;
}

.nav-button-lessons {
  padding: 10px 15px;
  background-color: #d8540b; /* Darker orange */
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: background-color 0.2s;
  font-size: 0.9em;
}

.header {
  text-align: center;
  margin-top: 10px; /* Add some space below the button */
  margin-bottom: 30px;
}

.header h1 {
  font-size: 2.2rem;
  color: #ff8c00;
}

.subtitle {
  font-size: 1.2rem;
  color: #666;
  font-weight: normal;
}

.progress-container {
  background-color: white;
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  margin-bottom: 25px;
}

/* Streak styles */
.streak-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 25px;
}

.streak-flame {
  font-size: 2rem;
  margin-bottom: 5px;
}

.streak-count {
  font-size: 1.8rem;
  font-weight: bold;
  color: #ff8c00;
}

.streak-label {
  font-size: 0.9rem;
  color: #666;
}

/* Level progress styles */
.level-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 25px;
}

.level-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 60px;
}

.level-number {
  font-size: 1.5rem;
  font-weight: bold;
  color: #ff8c00;
  background-color: #fff3e6;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #ff8c00;
}

.level-label {
  font-size: 0.8rem;
  color: #666;
  margin-top: 5px;
}

.progress-bar-container {
  flex-grow: 1;
  margin: 0 15px;
}

.progress-bar {
  height: 20px;
  background-color: #f0f0f0;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 5px;
}

.progress-fill {
  height: 100%;
  background-color: #ff8c00;
  width: 0%;
  border-radius: 10px;
  transition: width 0.5s ease-in-out;
}

.progress-text {
  text-align: center;
  font-size: 0.9rem;
  color: #666;
}

/* Daily goal styles */
.daily-goal-container {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
}

.daily-goal-icon {
  font-size: 1.5rem;
  margin-right: 15px;
}

.daily-goal-progress {
  flex-grow: 1;
}

.daily-goal-bar {
  height: 15px;
  background-color: #f0f0f0;
  border-radius: 7.5px;
  overflow: hidden;
  margin-bottom: 5px;
}

.daily-goal-fill {
  height: 100%;
  background-color: #ff8c00;
  width: 0%;
  border-radius: 7.5px;
  transition: width 0.5s ease-in-out;
}

.daily-goal-text {
  font-size: 0.9rem;
  color: #666;
}

/* Action buttons */
.actions-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 25px;
}

.action-button {
  background-color: #ff8c00;
  color: white;
  border: none;
  border-radius: 10px;
  padding: 12px 15px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

.action-button:hover {
  background-color: #e67e00;
}

#reset-progress {
  background-color: #f0f0f0;
  color: #666;
  grid-column: span 2;
}

#reset-progress:hover {
  background-color: #e0e0e0;
}

/* Achievements */
.achievements-container {
  background-color: white;
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.achievements-container h2 {
  color: #ff8c00;
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.achievements-list {
  list-style-type: none;
}

.achievement-item {
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
}

.achievement-item:last-child {
  border-bottom: none;
}

.achievement-icon {
  margin-right: 10px;
  font-size: 1.2rem;
}

.achievement-text {
  flex-grow: 1;
}

.achievement-time {
  color: #999;
  font-size: 0.8rem;
}

/* Animation for XP gain */
@keyframes xpGain {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

.xp-animation {
  animation: xpGain 0.5s ease-in-out;
}

/* Responsive adjustments */
@media (max-width: 480px) {
  .actions-container {
    grid-template-columns: 1fr;
  }

  #reset-progress {
    grid-column: span 1;
  }

  .level-container {
    flex-direction: column;
  }

  .level-info {
    margin-bottom: 10px;
  }

  .progress-bar-container {
    width: 100%;
    margin: 15px 0;
  }
}