Menú de Navegación Fluido con Gradientes

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 25% 25%, rgba(255, 0, 150, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(0, 255, 255, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(255, 255, 0, 0.2) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
  animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
  0%, 100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.1) rotate(180deg);
    opacity: 0.9;
  }
}

.fluid-gradient-menu {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.1) 0%, 
    rgba(255, 255, 255, 0.05) 50%, 
    rgba(255, 255, 255, 0.1) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 25px;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.fluid-gradient-menu:hover {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.15) 0%, 
    rgba(255, 255, 255, 0.1) 50%, 
    rgba(255, 255, 255, 0.15) 100%);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transform: translateX(-50%) translateY(-2px);
}

.menu-container {
  display: flex;
  align-items: center;
  padding: 15px 30px;
  gap: 40px;
  position: relative;
  z-index: 2;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 15px;
  cursor: pointer;
  transition: all 0.4s ease;
}

.brand-icon {
  position: relative;
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fluid-orb {
  width: 35px;
  height: 35px;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7);
  background-size: 300% 300%;
  border-radius: 50%;
  box-shadow: 
    0 4px 15px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  animation: fluidOrb 4s ease-in-out infinite;
  transition: all 0.4s ease;
}

@keyframes fluidOrb {
  0%, 100% {
    background-position: 0% 50%;
    transform: scale(1) rotate(0deg);
  }
  25% {
    background-position: 100% 50%;
    transform: scale(1.1) rotate(90deg);
  }
  50% {
    background-position: 100% 100%;
    transform: scale(1) rotate(180deg);
  }
  75% {
    background-position: 0% 100%;
    transform: scale(1.1) rotate(270deg);
  }
}

.brand-section:hover .fluid-orb {
  animation-duration: 2s;
  box-shadow: 
    0 6px 20px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.brand-text {
  font-size: 1.6rem;
  font-weight: 700;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGradient 3s ease-in-out infinite;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.4s ease;
}

@keyframes textGradient {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.brand-section:hover .brand-text {
  animation-duration: 1.5s;
  transform: scale(1.05);
}

.menu-items {
  display: flex;
  list-style: none;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.menu-item {
  position: relative;
}

.menu-link {
  position: relative;
  display: block;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 14px 24px;
  border-radius: 15px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.fluid-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, 
    rgba(255, 107, 107, 0.3) 0%, 
    rgba(78, 205, 196, 0.3) 25%, 
    rgba(69, 183, 209, 0.3) 50%, 
    rgba(150, 206, 180, 0.3) 75%, 
    rgba(255, 234, 167, 0.3) 100%);
  background-size: 400% 400%;
  border-radius: 15px;
  opacity: 0;
  transition: all 0.4s ease;
  animation: fluidBackground 6s ease-in-out infinite;
}

@keyframes fluidBackground {
  0%, 100% {
    background-position: 0% 50%;
  }
  25% {
    background-position: 100% 0%;
  }
  50% {
    background-position: 100% 100%;
  }
  75% {
    background-position: 0% 100%;
  }
}

.link-text {
  position: relative;
  z-index: 3;
  transition: all 0.4s ease;
}

.gradient-trail {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 0;
  background: radial-gradient(circle, 
    rgba(255, 255, 255, 0.4) 0%, 
    rgba(255, 107, 107, 0.3) 25%, 
    rgba(78, 205, 196, 0.3) 50%, 
    transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.menu-link:hover {
  color: rgba(255, 255, 255, 1);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transform: translateY(-3px) scale(1.05);
}

.menu-link:hover .fluid-bg {
  opacity: 1;
  animation-duration: 3s;
  box-shadow: 
    0 8px 25px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.menu-link:hover .gradient-trail {
  width: 120px;
  height: 120px;
  opacity: 1;
}

.menu-toggle {
  position: relative;
  display: none;
}

.toggle-btn {
  background: transparent;
  border: none;
  padding: 15px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-radius: 12px;
  transition: all 0.4s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.toggle-line {
  width: 25px;
  height: 3px;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  border-radius: 2px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.toggle-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

.toggle-btn.active .toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.toggle-btn.active .toggle-line:nth-child(2) {
  opacity: 0;
}

.toggle-btn.active .toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.fluid-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.gradient-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(20px);
  opacity: 0.3;
  animation: blobFloat 8s ease-in-out infinite;
}

.blob-1 {
  width: 60px;
  height: 60px;
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.blob-2 {
  width: 40px;
  height: 40px;
  background: linear-gradient(45deg, #45b7d1, #96ceb4);
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.blob-3 {
  width: 50px;
  height: 50px;
  background: linear-gradient(45deg, #ffeaa7, #fd79a8);
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

@keyframes blobFloat {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(20px, -15px) scale(1.1);
  }
  50% {
    transform: translate(-15px, 20px) scale(0.9);
  }
  75% {
    transform: translate(15px, 10px) scale(1.05);
  }
}

@media (max-width: 768px) {
  .fluid-gradient-menu {
    top: 10px;
    left: 10px;
    right: 10px;
    transform: none;
    border-radius: 20px;
  }
  
  .menu-container {
    padding: 12px 20px;
    gap: 20px;
  }
  
  .menu-items {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, 
      rgba(255, 255, 255, 0.15) 0%, 
      rgba(255, 255, 255, 0.1) 50%, 
      rgba(255, 255, 255, 0.15) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    margin-top: 10px;
    padding: 20px;
    flex-direction: column;
    gap: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  }
  
  .menu-items.active {
    display: flex;
  }
  
  .menu-toggle {
    display: block;
    margin-left: auto;
  }
  
  .menu-link {
    padding: 16px 24px;
    text-align: center;
    border-radius: 12px;
  }
  
  .brand-text {
    font-size: 1.4rem;
  }
  
  .fluid-orb {
    width: 30px;
    height: 30px;
  }
}

@media (max-width: 480px) {
  .menu-container {
    padding: 10px 15px;
    gap: 15px;
  }
  
  .brand-text {
    font-size: 1.2rem;
  }
  
  .menu-link {
    padding: 14px 20px;
    font-size: 0.95rem;
  }
  
  .fluid-orb {
    width: 25px;
    height: 25px;
  }
}

document.addEventListener('DOMContentLoaded', function() {
  const menuToggle = document.getElementById('menuToggle');
  const menuItems = document.querySelector('.menu-items');
  const menuLinks = document.querySelectorAll('.menu-link');
  const fluidMenu = document.querySelector('.fluid-gradient-menu');
  const gradientBlobs = document.querySelectorAll('.gradient-blob');
  
  // Configuración de efectos fluidos
  const fluidConfig = {
    morphDuration: 800,
    trailDelay: 150,
    colorShiftSpeed: 3000,
    blobMovementRange: 30
  };
  
  // Toggle del menú móvil
  if (menuToggle) {
    menuToggle.addEventListener('click', function() {
      this.classList.toggle('active');
      menuItems.classList.toggle('active');
      
      // Animar entrada de elementos del menú
      if (menuItems.classList.contains('active')) {
        animateMenuItems('in');
      } else {
        animateMenuItems('out');
      }
    });
  }
  
  // Animación de elementos del menú
  function animateMenuItems(direction) {
    const items = menuItems.querySelectorAll('.menu-item');
    items.forEach((item, index) => {
      const delay = index * 100;
      
      if (direction === 'in') {
        setTimeout(() => {
          item.style.opacity = '1';
          item.style.transform = 'translateY(0) scale(1)';
        }, delay);
      } else {
        setTimeout(() => {
          item.style.opacity = '0';
          item.style.transform = 'translateY(-20px) scale(0.9)';
        }, delay);
      }
    });
  }
  
  // Efectos de morfismo fluido en los enlaces
  menuLinks.forEach(link => {
    link.addEventListener('click', function(e) {
      e.preventDefault();
      
      // Crear efecto de morfismo
      createFluidMorph(this, e);
      
      // Simular navegación
      setTimeout(() => {
        console.log('Navegando a:', this.querySelector('.link-text').textContent);
      }, 400);
    });
    
    // Efecto de seguimiento del cursor
    link.addEventListener('mousemove', function(e) {
      createCursorTrail(this, e);
    });
    
    link.addEventListener('mouseenter', function() {
      activateFluidEffect(this);
    });
    
    link.addEventListener('mouseleave', function() {
      deactivateFluidEffect(this);
    });
  });
  
  // Crear efecto de morfismo fluido
  function createFluidMorph(element, event) {
    const rect = element.getBoundingClientRect();
    const x = event.clientX - rect.left;
    const y = event.clientY - rect.top;
    
    const morph = document.createElement('div');
    morph.style.position = 'absolute';
    morph.style.left = x + 'px';
    morph.style.top = y + 'px';
    morph.style.width = '0px';
    morph.style.height = '0px';
    morph.style.background = 'radial-gradient(circle, rgba(255, 255, 255, 0.8) 0%, rgba(255, 107, 107, 0.6) 30%, transparent 70%)';
    morph.style.borderRadius = '50%';
    morph.style.pointerEvents = 'none';
    morph.style.transform = 'translate(-50%, -50%)';
    morph.style.transition = `all ${fluidConfig.morphDuration}ms cubic-bezier(0.4, 0, 0.2, 1)`;
    morph.style.zIndex = '1';
    
    element.appendChild(morph);
    
    // Animar morfismo
    requestAnimationFrame(() => {
      const size = Math.max(rect.width, rect.height) * 2;
      morph.style.width = size + 'px';
      morph.style.height = size + 'px';
      morph.style.opacity = '0';
    });
    
    // Limpiar morfismo
    setTimeout(() => {
      morph.remove();
    }, fluidConfig.morphDuration);
  }
  
  // Crear rastro del cursor
  function createCursorTrail(element, event) {
    const rect = element.getBoundingClientRect();
    const x = event.clientX - rect.left;
    const y = event.clientY - rect.top;
    
    const trail = document.createElement('div');
    trail.style.position = 'absolute';
    trail.style.left = x + 'px';
    trail.style.top = y + 'px';
    trail.style.width = '8px';
    trail.style.height = '8px';
    trail.style.background = 'linear-gradient(45deg, #ff6b6b, #4ecdc4)';
    trail.style.borderRadius = '50%';
    trail.style.pointerEvents = 'none';
    trail.style.transform = 'translate(-50%, -50%)';
    trail.style.transition = 'all 0.3s ease';
    trail.style.opacity = '0.7';
    trail.style.zIndex = '2';
    
    element.appendChild(trail);
    
    // Animar rastro
    setTimeout(() => {
      trail.style.transform = 'translate(-50%, -50%) scale(2)';
      trail.style.opacity = '0';
    }, 50);
    
    // Limpiar rastro
    setTimeout(() => {
      trail.remove();
    }, 300);
  }
  
  // Activar efecto fluido
  function activateFluidEffect(element) {
    const fluidBg = element.querySelector('.fluid-bg');
    const gradientTrail = element.querySelector('.gradient-trail');
    
    if (fluidBg) {
      fluidBg.style.animationDuration = '2s';
    }
    
    // Crear partículas fluidas
    createFluidParticles(element);
  }
  
  // Desactivar efecto fluido
  function deactivateFluidEffect(element) {
    const fluidBg = element.querySelector('.fluid-bg');
    const particles = element.querySelectorAll('.fluid-particle');
    
    if (fluidBg) {
      fluidBg.style.animationDuration = '6s';
    }
    
    // Remover partículas
    particles.forEach(particle => {
      particle.style.opacity = '0';
      setTimeout(() => particle.remove(), 300);
    });
  }
  
  // Crear partículas fluidas
  function createFluidParticles(element) {
    const particleCount = 5;
    
    for (let i = 0; i < particleCount; i++) {
      setTimeout(() => {
        const particle = document.createElement('div');
        particle.className = 'fluid-particle';
        particle.style.position = 'absolute';
        particle.style.width = '4px';
        particle.style.height = '4px';
        particle.style.background = 'linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1)';
        particle.style.borderRadius = '50%';
        particle.style.pointerEvents = 'none';
        particle.style.opacity = '0.8';
        particle.style.zIndex = '1';
        
        const startX = Math.random() * element.offsetWidth;
        const startY = Math.random() * element.offsetHeight;
        const endX = startX + (Math.random() - 0.5) * 60;
        const endY = startY + (Math.random() - 0.5) * 60;
        
        particle.style.left = startX + 'px';
        particle.style.top = startY + 'px';
        particle.style.transition = 'all 2s cubic-bezier(0.4, 0, 0.2, 1)';
        
        element.appendChild(particle);
        
        // Animar partícula
        requestAnimationFrame(() => {
          particle.style.left = endX + 'px';
          particle.style.top = endY + 'px';
          particle.style.opacity = '0';
          particle.style.transform = 'scale(2)';
        });
        
        // Limpiar partícula
        setTimeout(() => {
          particle.remove();
        }, 2000);
      }, i * 200);
    }
  }
  
  // Animación de blobs de fondo
  function animateBackgroundBlobs() {
    gradientBlobs.forEach((blob, index) => {
      const moveRange = fluidConfig.blobMovementRange;
      const duration = 4000 + (index * 1000);
      
      setInterval(() => {
        const x = (Math.random() - 0.5) * moveRange;
        const y = (Math.random() - 0.5) * moveRange;
        const scale = 0.8 + Math.random() * 0.4;
        
        blob.style.transform = `translate(${x}px, ${y}px) scale(${scale})`;
      }, duration);
    });
  }
  
  // Efecto de paralaje suave
  let ticking = false;
  
  function updateParallax() {
    if (!ticking) {
      requestAnimationFrame(() => {
        const scrolled = window.pageYOffset;
        const rate = scrolled * -0.3;
        
        fluidMenu.style.transform = `translateX(-50%) translateY(${rate * 0.1}px)`;
        
        // Mover blobs con paralaje
        gradientBlobs.forEach((blob, index) => {
          const speed = 0.05 + (index * 0.02);
          blob.style.transform += ` translateY(${rate * speed}px)`;
        });
        
        ticking = false;
      });
      ticking = true;
    }
  }
  
  window.addEventListener('scroll', updateParallax);
  
  // Efecto de mouse tracking 3D
  document.addEventListener('mousemove', function(e) {
    const rect = fluidMenu.getBoundingClientRect();
    const centerX = rect.left + rect.width / 2;
    const centerY = rect.top + rect.height / 2;
    
    const deltaX = (e.clientX - centerX) / window.innerWidth;
    const deltaY = (e.clientY - centerY) / window.innerHeight;
    
    const rotateX = deltaY * 3;
    const rotateY = deltaX * 3;
    
    fluidMenu.style.transform = `translateX(-50%) rotateX(${rotateX}deg) rotateY(${rotateY}deg)`;
  });
  
  // Cerrar menú móvil al hacer clic fuera
  document.addEventListener('click', function(e) {
    if (!fluidMenu.contains(e.target) && menuItems.classList.contains('active')) {
      menuToggle.classList.remove('active');
      menuItems.classList.remove('active');
      animateMenuItems('out');
    }
  });
  
  // Inicializar animaciones
  setTimeout(() => {
    fluidMenu.style.opacity = '1';
    fluidMenu.style.transform = 'translateX(-50%) translateY(0)';
    animateBackgroundBlobs();
  }, 100);
  
  // Cambio dinámico de colores
  function cycleThroughColors() {
    const colors = [
      ['#ff6b6b', '#4ecdc4', '#45b7d1'],
      ['#a8e6cf', '#dcedc1', '#ffd3a5'],
      ['#fd79a8', '#fdcb6e', '#6c5ce7'],
      ['#74b9ff', '#0984e3', '#00b894']
    ];
    
    let currentColorIndex = 0;
    
    setInterval(() => {
      currentColorIndex = (currentColorIndex + 1) % colors.length;
      const currentColors = colors[currentColorIndex];
      
      // Actualizar colores de los blobs
      gradientBlobs.forEach((blob, index) => {
        const color1 = currentColors[index % currentColors.length];
        const color2 = currentColors[(index + 1) % currentColors.length];
        blob.style.background = `linear-gradient(45deg, ${color1}, ${color2})`;
      });
    }, fluidConfig.colorShiftSpeed);
  }
  
  cycleThroughColors();
});