Menú de Navegación Estilo Origami

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

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

body {
  font-family: 'Noto Sans', sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(45deg, transparent 49%, rgba(255, 255, 255, 0.1) 50%, transparent 51%),
    linear-gradient(-45deg, transparent 49%, rgba(255, 255, 255, 0.1) 50%, transparent 51%);
  background-size: 20px 20px;
  pointer-events: none;
  z-index: -1;
  opacity: 0.3;
}

.origami-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.menu-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.brand-logo {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
  perspective: 1000px;
}

.brand-text {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2c3e50;
  letter-spacing: 2px;
  position: relative;
  z-index: 3;
  transition: all 0.3s ease;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.logo-fold {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotateX(0deg);
  width: 100px;
  height: 40px;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  opacity: 0;
  transition: all 0.4s ease;
  transform-style: preserve-3d;
}

.logo-shadow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 20px;
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.3s ease;
}

.brand-logo:hover .logo-fold {
  opacity: 1;
  transform: translate(-50%, -50%) rotateX(-15deg) rotateY(10deg);
}

.brand-logo:hover .logo-shadow {
  opacity: 1;
  transform: translate(-50%, -50%) translateY(10px);
}

.menu-items {
  display: flex;
  list-style: none;
  gap: 30px;
  margin: 0;
  padding: 0;
}

.menu-item {
  position: relative;
  perspective: 1000px;
}

.menu-link {
  position: relative;
  display: block;
  color: #2c3e50;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 15px 25px;
  border-radius: 8px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.1);
  transform-style: preserve-3d;
}

.link-text {
  position: relative;
  z-index: 4;
  transition: all 0.3s ease;
}

.paper-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 8px;
  transition: all 0.4s ease;
  transform-origin: center;
}

.layer-1 {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  z-index: 1;
  transform: translateZ(0px);
}

.layer-2 {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  z-index: 2;
  transform: translateZ(2px) rotateX(0deg);
}

.layer-3 {
  background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
  z-index: 3;
  transform: translateZ(4px) rotateX(0deg);
}

.fold-line {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #6c757d, transparent);
  opacity: 0;
  transition: all 0.3s ease;
}

.menu-link.folding {
  transform: rotateX(-10deg) rotateY(5deg);
  box-shadow: 
    0 10px 30px rgba(0, 0, 0, 0.2),
    inset 0 0 20px rgba(255, 255, 255, 0.5);
}

.menu-link.folding .layer-1 {
  transform: translateZ(0px) rotateX(5deg);
}

.menu-link.folding .layer-2 {
  transform: translateZ(4px) rotateX(-5deg);
}

.menu-link.folding .layer-3 {
  transform: translateZ(8px) rotateX(-10deg);
}

.menu-link.folding .fold-line {
  width: 80%;
  opacity: 1;
}

.menu-link.folding .link-text {
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transform: translateZ(10px);
}

.origami-toggle {
  position: relative;
  perspective: 1000px;
}

.toggle-btn {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.2);
  color: #2c3e50;
  padding: 12px 24px;
  border-radius: 8px;
  cursor: pointer;
  font-family: 'Noto Sans', sans-serif;
  font-weight: 500;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
}

.toggle-fold {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 8px;
  opacity: 0;
  transition: all 0.3s ease;
  transform: rotateX(0deg);
}

.toggle-text {
  position: relative;
  z-index: 2;
}

.toggle-btn:hover {
  transform: rotateX(-5deg) rotateY(2deg);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.toggle-btn:hover .toggle-fold {
  opacity: 1;
  transform: rotateX(-10deg);
}

.toggle-btn.active {
  background: rgba(52, 152, 219, 0.1);
  border-color: #3498db;
  color: #3498db;
  transform: rotateX(-10deg) rotateY(5deg);
}

.toggle-btn.active .toggle-fold {
  opacity: 1;
  background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
  transform: rotateX(-15deg);
}

.paper-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -2;
}

.crease {
  position: absolute;
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
  opacity: 0;
  transition: all 0.5s ease;
}

.crease-1 {
  width: 2px;
  height: 100%;
  left: 25%;
  top: 0;
  transform: rotate(15deg);
}

.crease-2 {
  width: 100%;
  height: 2px;
  left: 0;
  top: 30%;
  transform: rotate(-5deg);
}

.crease-3 {
  width: 2px;
  height: 100%;
  right: 30%;
  top: 0;
  transform: rotate(-10deg);
}

.origami-menu.folded .crease {
  opacity: 1;
}

@media (max-width: 768px) {
  .menu-container {
    flex-direction: column;
    gap: 20px;
    padding: 20px;
  }
  
  .menu-items {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .menu-link {
    padding: 12px 20px;
    font-size: 0.9rem;
  }
  
  .brand-text {
    font-size: 1.5rem;
    letter-spacing: 1px;
  }
}

@media (max-width: 480px) {
  .menu-items {
    flex-direction: column;
    width: 100%;
  }
  
  .menu-link {
    text-align: center;
    width: 100%;
  }
  
  .origami-toggle {
    width: 100%;
  }
  
  .toggle-btn {
    width: 100%;
  }
}

document.addEventListener('DOMContentLoaded', function() {
  const menuLinks = document.querySelectorAll('.menu-link[data-fold="true"]');
  const toggleBtn = document.getElementById('origamiToggle');
  const origamiMenu = document.querySelector('.origami-menu');
  const brandLogo = document.querySelector('.brand-logo');
  
  let foldingEnabled = true;
  
  // Configuración de efectos de plegado
  const foldConfig = {
    duration: 400,
    easing: 'cubic-bezier(0.4, 0, 0.2, 1)',
    stagger: 100
  };
  
  // Aplicar efecto de plegado
  function applyFoldEffect(element, intensity = 1) {
    if (!foldingEnabled) return;
    
    element.classList.add('folding');
    
    // Crear efecto de sombra dinámica
    const shadowIntensity = intensity * 0.3;
    element.style.boxShadow = `
      0 ${10 * intensity}px ${30 * intensity}px rgba(0, 0, 0, ${shadowIntensity}),
      inset 0 0 ${20 * intensity}px rgba(255, 255, 255, 0.5)
    `;
  }
  
  // Remover efecto de plegado
  function removeFoldEffect(element) {
    element.classList.remove('folding');
    element.style.boxShadow = '';
  }
  
  // Manejar hover en enlaces del menú
  menuLinks.forEach((link, index) => {
    link.addEventListener('mouseenter', function() {
      setTimeout(() => {
        applyFoldEffect(this, 1);
      }, index * 50);
    });
    
    link.addEventListener('mouseleave', function() {
      removeFoldEffect(this);
    });
  });
  
  // Funcionalidad del botón de alternancia
  toggleBtn.addEventListener('click', function() {
    foldingEnabled = !foldingEnabled;
    this.classList.toggle('active');
    origamiMenu.classList.toggle('folded');
    
    if (foldingEnabled) {
      this.querySelector('.toggle-text').textContent = 'Plegar';
      
      // Animar entrada de efectos de plegado
      menuLinks.forEach((link, index) => {
        setTimeout(() => {
          link.style.transition = 'all 0.4s ease';
          link.style.transform = 'rotateX(0deg) rotateY(0deg)';
        }, index * 100);
      });
    } else {
      this.querySelector('.toggle-text').textContent = 'Desplegar';
      
      // Remover todos los efectos de plegado
      menuLinks.forEach(link => {
        removeFoldEffect(link);
        link.style.transform = 'rotateX(0deg) rotateY(0deg)';
      });
    }
  });
  
  // Efectos de clic
  menuLinks.forEach(link => {
    link.addEventListener('click', function(e) {
      e.preventDefault();
      
      // Crear efecto de plegado intenso
      this.style.transform = 'rotateX(-20deg) rotateY(10deg) scale(0.95)';
      
      // Crear ondas de papel
      const rect = this.getBoundingClientRect();
      const centerX = rect.left + rect.width / 2;
      const centerY = rect.top + rect.height / 2;
      
      for (let i = 0; i < 3; i++) {
        setTimeout(() => {
          createPaperWave(centerX, centerY, i);
        }, i * 150);
      }
      
      // Restaurar transformación
      setTimeout(() => {
        this.style.transform = '';
      }, 300);
    });
  });
  
  // Crear ondas de papel
  function createPaperWave(x, y, index) {
    const wave = document.createElement('div');
    wave.style.position = 'fixed';
    wave.style.left = x - 25 + 'px';
    wave.style.top = y - 25 + 'px';
    wave.style.width = '50px';
    wave.style.height = '50px';
    wave.style.background = 'linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(248, 249, 250, 0.6) 100%)';
    wave.style.border = '1px solid rgba(0, 0, 0, 0.1)';
    wave.style.borderRadius = '8px';
    wave.style.pointerEvents = 'none';
    wave.style.zIndex = '9998';
    wave.style.transform = 'rotateX(-10deg) rotateY(5deg)';
    wave.style.animation = `paper-wave-${index} 1s ease-out forwards`;
    
    document.body.appendChild(wave);
    
    setTimeout(() => {
      wave.remove();
    }, 1000);
  }
  
  // Interacción del logo de marca
  brandLogo.addEventListener('click', function() {
    // Crear múltiples capas de plegado
    const rect = this.getBoundingClientRect();
    const centerX = rect.left + rect.width / 2;
    const centerY = rect.top + rect.height / 2;
    
    for (let i = 0; i < 5; i++) {
      setTimeout(() => {
        const fold = document.createElement('div');
        fold.style.position = 'fixed';
        fold.style.left = centerX - 30 + 'px';
        fold.style.top = centerY - 15 + 'px';
        fold.style.width = '60px';
        fold.style.height = '30px';
        fold.style.background = `linear-gradient(135deg, rgba(255, 255, 255, ${0.8 - i * 0.1}) 0%, rgba(248, 249, 250, ${0.6 - i * 0.1}) 100%)`;
        fold.style.border = '1px solid rgba(0, 0, 0, 0.1)';
        fold.style.borderRadius = '4px';
        fold.style.pointerEvents = 'none';
        fold.style.zIndex = '9998';
        fold.style.transformStyle = 'preserve-3d';
        fold.style.animation = `brand-fold-${i} 1.5s ease-out forwards`;
        
        document.body.appendChild(fold);
        
        setTimeout(() => {
          fold.remove();
        }, 1500);
      }, i * 100);
    }
  });
  
  // Agregar CSS para animaciones dinámicas
  const style = document.createElement('style');
  style.textContent = `
    @keyframes paper-wave-0 {
      0% {
        transform: rotateX(-10deg) rotateY(5deg) scale(1);
        opacity: 0.8;
      }
      50% {
        transform: rotateX(-20deg) rotateY(10deg) scale(1.5);
        opacity: 0.6;
      }
      100% {
        transform: rotateX(-30deg) rotateY(15deg) scale(2);
        opacity: 0;
      }
    }
    
    @keyframes paper-wave-1 {
      0% {
        transform: rotateX(-10deg) rotateY(-5deg) scale(1);
        opacity: 0.7;
      }
      50% {
        transform: rotateX(-15deg) rotateY(-10deg) scale(1.3);
        opacity: 0.5;
      }
      100% {
        transform: rotateX(-25deg) rotateY(-15deg) scale(1.8);
        opacity: 0;
      }
    }
    
    @keyframes paper-wave-2 {
      0% {
        transform: rotateX(10deg) rotateY(5deg) scale(1);
        opacity: 0.6;
      }
      50% {
        transform: rotateX(15deg) rotateY(10deg) scale(1.2);
        opacity: 0.4;
      }
      100% {
        transform: rotateX(20deg) rotateY(15deg) scale(1.6);
        opacity: 0;
      }
    }
    
    @keyframes brand-fold-0 {
      0% {
        transform: rotateX(0deg) rotateY(0deg) scale(1);
        opacity: 0.8;
      }
      100% {
        transform: rotateX(-30deg) rotateY(20deg) scale(2);
        opacity: 0;
      }
    }
    
    @keyframes brand-fold-1 {
      0% {
        transform: rotateX(0deg) rotateY(0deg) scale(1);
        opacity: 0.7;
      }
      100% {
        transform: rotateX(-25deg) rotateY(-15deg) scale(1.8);
        opacity: 0;
      }
    }
    
    @keyframes brand-fold-2 {
      0% {
        transform: rotateX(0deg) rotateY(0deg) scale(1);
        opacity: 0.6;
      }
      100% {
        transform: rotateX(20deg) rotateY(25deg) scale(1.6);
        opacity: 0;
      }
    }
    
    @keyframes brand-fold-3 {
      0% {
        transform: rotateX(0deg) rotateY(0deg) scale(1);
        opacity: 0.5;
      }
      100% {
        transform: rotateX(15deg) rotateY(-20deg) scale(1.4);
        opacity: 0;
      }
    }
    
    @keyframes brand-fold-4 {
      0% {
        transform: rotateX(0deg) rotateY(0deg) scale(1);
        opacity: 0.4;
      }
      100% {
        transform: rotateX(-15deg) rotateY(10deg) scale(1.2);
        opacity: 0;
      }
    }
  `;
  document.head.appendChild(style);
  
  // Efecto de paralaje suave en el fondo
  let ticking = false;
  
  function updateParallax() {
    if (!ticking) {
      requestAnimationFrame(() => {
        const scrolled = window.pageYOffset;
        const parallax = scrolled * 0.5;
        
        const creases = document.querySelectorAll('.crease');
        creases.forEach((crease, index) => {
          const offset = parallax * (index + 1) * 0.1;
          crease.style.transform += ` translateY(${offset}px)`;
        });
        
        ticking = false;
      });
      ticking = true;
    }
  }
  
  window.addEventListener('scroll', updateParallax);
  
  // Inicialización de efectos
  setTimeout(() => {
    origamiMenu.style.opacity = '1';
    origamiMenu.style.transform = 'translateY(0)';
  }, 100);
});