/* ===================================== */
/* QUICKBITE TRANSITIONS - transitions.css */
/* Archivo CSS independiente para transiciones */
/* ===================================== */

:root {
  --qb-primary: #FF5722;
  --qb-primary-dark: #FF5722;
  --qb-white: #ffffff;
  --qb-transition-duration: 0.2s;
  --qb-transition-timing: ease-in-out;
}

/* Overlay principal con fondo borroso */
.qb-transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 99999;
  display: none;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity var(--qb-transition-duration) var(--qb-transition-timing);
}

.qb-transition-overlay.active {
  display: flex;
  opacity: 1;
}

/* Contenido centrado */
.qb-transition-content {
  text-align: center;
  color: var(--qb-white);
  animation: qb-fade-scale 1.5s ease-in-out infinite alternate;
}

/* Logo QuickBite con League Spartan */
.qb-logo {
  font-family: 'League Spartan', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.qb-logo .quick {
  color: var(--qb-white);
}

.qb-logo .bite {
  color: #FFD700;
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

/* Spinner minimalista */
.qb-spinner {
  width: 32px;
  height: 32px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top: 2px solid var(--qb-white);
  border-radius: 50%;
  margin: 0 auto 1rem;
  animation: qb-spin 0.8s linear infinite;
}

/* Texto con League Spartan */
.qb-text {
  font-family: 'League Spartan', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  font-weight: 500;
  opacity: 0.9;
  letter-spacing: 0.02em;
}

/* Efecto en el contenido de la página */
.qb-page-content {
  opacity: 1;
  transition: opacity var(--qb-transition-duration) var(--qb-transition-timing);
}

.qb-page-content.fade-out {
  opacity: 0;
}

.qb-page-content.fade-in {
  opacity: 1;
}

/* Animaciones */
@keyframes qb-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes qb-fade-scale {
  0% { 
    transform: scale(1); 
    opacity: 0.8; 
  }
  100% { 
    transform: scale(1.02); 
    opacity: 1; 
  }
}

/* Responsive */
@media (max-width: 768px) {
  .qb-logo {
    font-size: 2rem;
  }
  
  .qb-spinner {
    width: 28px;
    height: 28px;
  }
  
  .qb-text {
    font-size: 0.85rem;
  }
}

/* Optimizaciones de rendimiento */
.qb-transition-overlay {
  will-change: opacity;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.qb-spinner {
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}