/* ==========================================
   ANIMATIONS & EFFECTS
   ========================================== */

/* Fade In on Scroll */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Particle Effects Container */
.particle-effect {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 2;
  overflow: hidden;
}

/* Glass Rain Effect - HD 189733 b */
.glass-particle {
  position: absolute;
  width: 3px;
  height: 20px;
  background: linear-gradient(180deg, transparent 0%, var(--hd189733b-secondary) 50%, transparent 100%);
  opacity: 0.6;
  animation: glass-fall linear infinite;
  box-shadow: 0 0 10px var(--hd189733b-secondary);
}

@keyframes glass-fall {
  0% {
    transform: translateY(-100px) rotate(15deg);
    opacity: 0;
  }
  10% {
    opacity: 0.8;
  }
  90% {
    opacity: 0.8;
  }
  100% {
    transform: translateY(100vh) rotate(15deg);
    opacity: 0;
  }
}

/* Iron Rain Effect - WASP-76b */
.iron-particle {
  position: absolute;
  width: 4px;
  height: 15px;
  background: linear-gradient(180deg, #FFD700 0%, #FF8C00 50%, #FF6B35 100%);
  opacity: 0.7;
  animation: iron-fall linear infinite;
  border-radius: 2px;
  box-shadow: 0 0 15px rgba(255, 107, 53, 0.8);
}

@keyframes iron-fall {
  0% {
    transform: translateY(-100px) rotate(25deg);
    opacity: 0;
  }
  10% {
    opacity: 0.9;
  }
  90% {
    opacity: 0.9;
  }
  100% {
    transform: translateY(100vh) rotate(25deg);
    opacity: 0;
  }
}

/* Lava Flow Effect - 55 Cancri e */
.lava-flow {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(180deg, 
    transparent 0%, 
    rgba(255, 69, 0, 0.2) 30%, 
    rgba(255, 140, 0, 0.3) 60%, 
    rgba(255, 215, 0, 0.4) 100%
  );
  animation: lava-pulse 4s ease-in-out infinite;
  filter: blur(20px);
}

@keyframes lava-pulse {
  0%, 100% {
    opacity: 0.6;
    transform: scaleY(1);
  }
  50% {
    opacity: 0.9;
    transform: scaleY(1.1);
  }
}

.lava-bubble {
  position: absolute;
  bottom: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 215, 0, 0.8) 0%, rgba(255, 69, 0, 0.4) 100%);
  animation: bubble-rise ease-in-out infinite;
}

@keyframes bubble-rise {
  0% {
    transform: translateY(0) scale(1);
    opacity: 0.8;
  }
  100% {
    transform: translateY(-400px) scale(1.5);
    opacity: 0;
  }
}

/* Orbital Speed Indicator - 55 Cancri e */
.orbit-indicator {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(0, 0, 0, 0.7);
  padding: var(--spacing-sm);
  border-radius: 12px;
  border: 2px solid var(--cancri-secondary);
  backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  z-index: 20;
}

.orbit-clock {
  font-size: 2rem;
  color: var(--cancri-secondary);
  font-weight: 700;
  text-shadow: 0 0 20px var(--cancri-secondary);
}

/* Dual Suns - Kepler-16b */
.dual-suns {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 600px;
  height: 200px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 2;
}

.sun {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  position: relative;
  animation: sun-pulse 3s ease-in-out infinite;
}

.sun-1 {
  background: radial-gradient(circle, #FFA500 0%, #FF8C00 40%, transparent 70%);
  box-shadow: 0 0 80px rgba(255, 165, 0, 0.8);
  animation-delay: 0s;
}

.sun-2 {
  background: radial-gradient(circle, #FF6347 0%, #FF4500 40%, transparent 70%);
  box-shadow: 0 0 60px rgba(255, 99, 71, 0.6);
  animation-delay: 1.5s;
}

@keyframes sun-pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
  }
}

/* Light Absorption Visualization - TrES-2b */
.light-absorption {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 3;
}

.light-ray {
  position: absolute;
  width: 2px;
  height: 100px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.8) 0%, transparent 100%);
  animation: light-fade 3s ease-out infinite;
  opacity: 0;
}

@keyframes light-fade {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  20% {
    opacity: 0.6;
  }
  100% {
    opacity: 0;
    transform: translateY(200px);
  }
}

.absorption-meter {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 30px;
  border: 2px solid var(--tres2b-secondary);
  backdrop-filter: blur(10px);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.meter-bar {
  width: 200px;
  height: 20px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.meter-fill {
  height: 100%;
  width: 1%;
  background: linear-gradient(90deg, var(--tres2b-secondary) 0%, #FF0000 100%);
  border-radius: 10px;
  animation: fill-meter 3s ease-in-out infinite;
}

@keyframes fill-meter {
  0%, 100% { width: 1%; }
  50% { width: 2%; }
}

/* Temperature Gauge */
.temperature-gauge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: rgba(0, 0, 0, 0.5);
  border-radius: 12px;
  backdrop-filter: blur(5px);
}

.temp-bar {
  width: 150px;
  height: 12px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
}

.temp-fill {
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, #0066ff 0%, #ffaa00 50%, #ff0000 100%);
  transition: width 1s ease;
}

/* Floating Animation for Elements */
.float-slow {
  animation: float-slow 8s ease-in-out infinite;
}

@keyframes float-slow {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-30px);
  }
}

/* Pulsing Glow */
.pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px currentColor;
  }
  50% {
    box-shadow: 0 0 40px currentColor;
  }
}

/* Shimmer Effect */
.shimmer {
  position: relative;
  overflow: hidden;
}

.shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Responsive Animations */
@media (max-width: 768px) {
  .dual-suns {
    max-width: 400px;
    height: 150px;
  }
  
  .sun {
    width: 80px;
    height: 80px;
  }
  
  .orbit-indicator {
    top: 10px;
    right: 10px;
    padding: var(--spacing-xs);
  }
  
  .orbit-clock {
    font-size: 1.5rem;
  }
  
  .meter-bar {
    width: 150px;
  }
}

@media (max-width: 480px) {
  .absorption-meter {
    bottom: 20px;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .meter-bar {
    width: 100px;
    height: 15px;
  }
  
  .dual-suns {
    max-width: 300px;
    height: 120px;
  }
  
  .sun {
    width: 60px;
    height: 60px;
  }
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}