/* ========================================
   GAMIFICATION: XP SYSTEM + ACHIEVEMENTS
   ======================================== */

/* XP Bar - Fixed at top */
.xp-bar-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(6, 9, 19, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid rgba(255, 107, 53, 0.3);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.xp-info {
  display: flex;
  align-items: center;
  gap: 15px;
  flex: 1;
}

.xp-level {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--neon-orange);
  text-shadow: 0 0 10px var(--neon-orange);
  min-width: 80px;
}

.xp-progress {
  flex: 1;
  height: 30px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 107, 53, 0.3);
}

.xp-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-orange), var(--neon-blue));
  transition: width 0.5s cubic-bezier(0.4, 0.0, 0.2, 1);
  position: relative;
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.5);
}

.xp-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.3), transparent);
}

.xp-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.85rem;
  font-weight: 700;
  color: white;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  white-space: nowrap;
}

.xp-streak {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.streak-fire {
  font-size: 1.5rem;
  animation: fireFlicker 1s ease-in-out infinite;
}

@keyframes fireFlicker {
  0%, 100% { transform: scale(1) rotate(0deg); }
  25% { transform: scale(1.1) rotate(-5deg); }
  75% { transform: scale(1.1) rotate(5deg); }
}

/* Level Up Animation */
.level-up-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.3), transparent 70%);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: levelUpFade 2s ease-out forwards;
  pointer-events: none;
}

@keyframes levelUpFade {
  0% { opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { opacity: 0; }
}

.level-up-content {
  text-align: center;
  animation: levelUpBounce 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes levelUpBounce {
  0% { transform: scale(0) rotate(-180deg); }
  60% { transform: scale(1.2) rotate(10deg); }
  100% { transform: scale(1) rotate(0deg); }
}

.level-up-title {
  font-size: 4rem;
  font-weight: 900;
  color: var(--neon-orange);
  text-shadow: 
    0 0 20px var(--neon-orange),
    0 0 40px var(--neon-orange),
    0 0 60px var(--neon-orange);
  margin-bottom: 20px;
  animation: textGlow 1s ease-in-out infinite;
}

@keyframes textGlow {
  0%, 100% { text-shadow: 0 0 20px var(--neon-orange); }
  50% { text-shadow: 0 0 40px var(--neon-orange), 0 0 60px var(--neon-orange); }
}

.level-up-number {
  font-size: 6rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--neon-orange), var(--neon-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Achievement Badges */
.achievements-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}

.achievement-badge {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  border: 2px solid var(--neon-orange);
  border-radius: 12px;
  padding: 15px 20px;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: 0 8px 32px rgba(255, 107, 53, 0.4);
  animation: achievementSlideIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  min-width: 300px;
}

@keyframes achievementSlideIn {
  0% {
    transform: translateX(400px) rotate(10deg);
    opacity: 0;
  }
  100% {
    transform: translateX(0) rotate(0deg);
    opacity: 1;
  }
}

.achievement-icon {
  font-size: 2.5rem;
  animation: achievementSpin 0.6s ease-out;
}

@keyframes achievementSpin {
  0% { transform: rotate(0deg) scale(0); }
  50% { transform: rotate(180deg) scale(1.2); }
  100% { transform: rotate(360deg) scale(1); }
}

.achievement-content {
  flex: 1;
}

.achievement-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--neon-orange);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.achievement-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.achievement-xp {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--neon-blue);
  text-shadow: 0 0 10px var(--neon-blue);
}

/* XP Gain Popup */
.xp-gain-popup {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 107, 53, 0.95);
  color: white;
  padding: 12px 24px;
  border-radius: 20px;
  font-size: 1.2rem;
  font-weight: 900;
  box-shadow: 0 8px 32px rgba(255, 107, 53, 0.6);
  animation: xpGainFloat 2s ease-out forwards;
  z-index: 10000;
  pointer-events: none;
}

@keyframes xpGainFloat {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(20px) scale(0.8);
  }
  20% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
  }
  80% {
    opacity: 1;
    transform: translateX(-50%) translateY(-20px) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(-40px) scale(0.8);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .xp-bar-container {
    height: 50px;
    padding: 0 10px;
  }
  
  .xp-level {
    font-size: 1.2rem;
    min-width: 60px;
  }
  
  .xp-progress {
    height: 25px;
  }
  
  .xp-streak {
    font-size: 1rem;
  }
  
  .level-up-title {
    font-size: 2.5rem;
  }
  
  .level-up-number {
    font-size: 4rem;
  }
  
  .achievement-badge {
    min-width: 250px;
    padding: 12px 15px;
  }
  
  .achievements-container {
    bottom: 10px;
    right: 10px;
  }
}