/* ============================================
   4D TESSERACT ANIMATION
   A rotating hypercube with neon glow effects
   ============================================ */

/* Tesseract Container */
.tesseract-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  padding: 2rem;
  margin-bottom: 1rem;
  perspective: 1000px;
  transition: transform 0.3s ease;
}

.tesseract-wrapper:hover {
  transform: scale(1.05);
}

.tesseract-wrapper:hover .tesseract {
  filter: drop-shadow(0 0 30px #00f0ff) drop-shadow(0 0 60px #00f0ff);
}

/* Main Tesseract */
.tesseract {
  width: 120px;
  height: 120px;
  position: relative;
  transform-style: preserve-3d;
  animation: tesseractRotate 8s ease-in-out infinite;
  filter: drop-shadow(0 0 15px #00f0ff) drop-shadow(0 0 30px rgba(0, 240, 255, 0.5));
}

/* Outer Cube */
.tesseract .outer-cube {
  position: absolute;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  animation: outerCubeRotate 12s linear infinite;
}

.tesseract .outer-cube .face {
  position: absolute;
  width: 120px;
  height: 120px;
  border: 2px solid rgba(0, 240, 255, 0.6);
  background: rgba(0, 240, 255, 0.03);
  box-shadow: 
    inset 0 0 20px rgba(0, 240, 255, 0.1),
    0 0 10px rgba(0, 240, 255, 0.3);
}

.outer-cube .front  { transform: translateZ(60px); }
.outer-cube .back   { transform: rotateY(180deg) translateZ(60px); }
.outer-cube .right  { transform: rotateY(90deg) translateZ(60px); }
.outer-cube .left   { transform: rotateY(-90deg) translateZ(60px); }
.outer-cube .top    { transform: rotateX(90deg) translateZ(60px); }
.outer-cube .bottom { transform: rotateX(-90deg) translateZ(60px); }

/* Inner Cube */
.tesseract .inner-cube {
  position: absolute;
  width: 60px;
  height: 60px;
  top: 30px;
  left: 30px;
  transform-style: preserve-3d;
  animation: innerCubeRotate 6s linear infinite reverse;
}

.tesseract .inner-cube .face {
  position: absolute;
  width: 60px;
  height: 60px;
  border: 2px solid rgba(0, 240, 255, 0.9);
  background: rgba(0, 240, 255, 0.08);
  box-shadow: 
    inset 0 0 15px rgba(0, 240, 255, 0.2),
    0 0 15px rgba(0, 240, 255, 0.5);
}

.inner-cube .front  { transform: translateZ(30px); }
.inner-cube .back   { transform: rotateY(180deg) translateZ(30px); }
.inner-cube .right  { transform: rotateY(90deg) translateZ(30px); }
.inner-cube .left   { transform: rotateY(-90deg) translateZ(30px); }
.inner-cube .top    { transform: rotateX(90deg) translateZ(30px); }
.inner-cube .bottom { transform: rotateX(-90deg) translateZ(30px); }

/* Connecting Lines (4D Effect) */
.tesseract .connection {
  position: absolute;
  width: 2px;
  height: 42px;
  background: linear-gradient(to bottom, rgba(0, 240, 255, 0.8), rgba(0, 240, 255, 0.2));
  transform-origin: top center;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.connection.c1 { top: 0; left: 0; transform: rotateX(-45deg) rotateY(-45deg); }
.connection.c2 { top: 0; right: 0; transform: rotateX(-45deg) rotateY(45deg); }
.connection.c3 { bottom: 0; left: 0; transform: rotateX(45deg) rotateY(-45deg) translateY(-42px); }
.connection.c4 { bottom: 0; right: 0; transform: rotateX(45deg) rotateY(45deg) translateY(-42px); }
.connection.c5 { top: 0; left: 0; transform: translateZ(60px) rotateX(-45deg) rotateY(-45deg); }
.connection.c6 { top: 0; right: 0; transform: translateZ(60px) rotateX(-45deg) rotateY(45deg); }
.connection.c7 { bottom: 0; left: 0; transform: translateZ(60px) rotateX(45deg) rotateY(-45deg) translateY(-42px); }
.connection.c8 { bottom: 0; right: 0; transform: translateZ(60px) rotateX(45deg) rotateY(45deg) translateY(-42px); }

/* Animations */
@keyframes tesseractRotate {
  0% { transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); }
  25% { transform: rotateX(90deg) rotateY(90deg) rotateZ(0deg); }
  50% { transform: rotateX(180deg) rotateY(180deg) rotateZ(90deg); }
  75% { transform: rotateX(270deg) rotateY(270deg) rotateZ(180deg); }
  100% { transform: rotateX(360deg) rotateY(360deg) rotateZ(360deg); }
}

@keyframes outerCubeRotate {
  0% { transform: rotateX(0deg) rotateY(0deg); }
  100% { transform: rotateX(360deg) rotateY(360deg); }
}

@keyframes innerCubeRotate {
  0% { transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); }
  100% { transform: rotateX(360deg) rotateY(360deg) rotateZ(360deg); }
}

/* Hint text below tesseract */
.tesseract-hint {
  color: rgba(0, 240, 255, 0.5);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 0.5rem;
  animation: hintPulse 2s ease-in-out infinite;
}

@keyframes hintPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ============================================
   EASTER EGG PAGE
   Hacker-style terminal with typing effect
   ============================================ */

.easter-egg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.easter-egg-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Back Button */
.easter-back-btn {
  position: fixed;
  top: 20px;
  left: 20px;
  background: transparent;
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: #00f0ff;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  z-index: 10000;
}

.easter-back-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: #00f0ff;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

/* Terminal Container */
.hacker-terminal {
  text-align: center;
  font-family: 'Courier New', monospace;
}

/* Blinking Cursor */
.terminal-cursor {
  display: inline-block;
  width: 15px;
  height: 50px;
  background: #00f0ff;
  animation: cursorBlink 0.8s step-end infinite;
  box-shadow: 0 0 20px #00f0ff, 0 0 40px rgba(0, 240, 255, 0.5);
  margin-bottom: 2rem;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Typewriter Text */
.typewriter-text {
  font-size: 4rem;
  color: #00f0ff;
  text-shadow: 
    0 0 10px #00f0ff,
    0 0 20px #00f0ff,
    0 0 40px rgba(0, 240, 255, 0.5);
  letter-spacing: 4px;
  font-weight: bold;
  white-space: nowrap;
  overflow: hidden;
  min-height: 5rem;
}

.typewriter-text .inline-cursor {
  display: inline-block;
  width: 4px;
  height: 1em;
  background: #00f0ff;
  animation: cursorBlink 0.6s step-end infinite;
  vertical-align: middle;
  margin-left: 5px;
  box-shadow: 0 0 10px #00f0ff;
}

/* Subtitle */
.easter-subtitle {
  color: rgba(0, 240, 255, 0.5);
  font-size: 0.9rem;
  margin-top: 3rem;
  letter-spacing: 3px;
  animation: subtitleFade 2s ease-in-out infinite;
}

@keyframes subtitleFade {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.7; }
}

/* Scanlines Effect */
.easter-egg-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.15),
    rgba(0, 0, 0, 0.15) 1px,
    transparent 1px,
    transparent 2px
  );
  pointer-events: none;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .tesseract {
    width: 80px;
    height: 80px;
  }
  
  .tesseract .outer-cube .face {
    width: 80px;
    height: 80px;
  }
  
  .outer-cube .front  { transform: translateZ(40px); }
  .outer-cube .back   { transform: rotateY(180deg) translateZ(40px); }
  .outer-cube .right  { transform: rotateY(90deg) translateZ(40px); }
  .outer-cube .left   { transform: rotateY(-90deg) translateZ(40px); }
  .outer-cube .top    { transform: rotateX(90deg) translateZ(40px); }
  .outer-cube .bottom { transform: rotateX(-90deg) translateZ(40px); }
  
  .tesseract .inner-cube {
    width: 40px;
    height: 40px;
    top: 20px;
    left: 20px;
  }
  
  .tesseract .inner-cube .face {
    width: 40px;
    height: 40px;
  }
  
  .inner-cube .front  { transform: translateZ(20px); }
  .inner-cube .back   { transform: rotateY(180deg) translateZ(20px); }
  .inner-cube .right  { transform: rotateY(90deg) translateZ(20px); }
  .inner-cube .left   { transform: rotateY(-90deg) translateZ(20px); }
  .inner-cube .top    { transform: rotateX(90deg) translateZ(20px); }
  .inner-cube .bottom { transform: rotateX(-90deg) translateZ(20px); }
  
  .typewriter-text {
    font-size: 2rem;
  }
  
  .terminal-cursor {
    height: 30px;
    width: 10px;
  }
}