/* === welcome-screen.css === */
/* Estilos específicos para la pantalla de bienvenida */

.welcome-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s ease, transform 0.5s ease;
  overflow: hidden;
}

.welcome-screen.hidden {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
}

.welcome-content {
  text-align: center;
  color: #4361ee;
  max-width: 600px;
  padding: 40px;
  background: white;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  animation: welcomeFadeIn 0.8s ease-out;
}

@keyframes welcomeFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.welcome-logo {
  font-size: 3rem;
  margin-bottom: 20px;
  color: #4361ee;
  animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.welcome-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #4361ee;
}

.welcome-subtitle {
  font-size: 1.2rem;
  margin-bottom: 40px;
  color: #a7a7a7;
  font-weight: 300;
  line-height: 1.5;
}

.welcome-buttons {
  display: flex;
  flex-direction: column;
  gap: 20px;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.welcome-btn {
  padding: 16px 32px;
  border: none;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  width: 70%;
  justify-content: center;
}

.welcome-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.welcome-btn:hover::before {
  left: 100%;
}

.welcome-btn.primary {
  background: #4361ee;
  color: white;
  box-shadow: 0 8px 25px rgba(67, 97, 238, 0.3);
}

.welcome-btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(67, 97, 238, 0.4);
  background: #3a56d4;
}

.welcome-btn.secondary {
  background: white;
  color: #4361ee;
  border: 2px solid #4361ee;
}

.welcome-btn.secondary:hover {
  background: #4361ee;
  color: white;
  border-color: #4361ee;
  transform: translateY(-2px);
}

.welcome-btn i {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.welcome-btn:hover i {
  transform: scale(1.1);
}

/* Efectos de partículas de fondo */
.welcome-screen::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  animation: backgroundFloat 20s ease-in-out infinite;
}

@keyframes backgroundFloat {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

/* Responsive design */
@media (max-width: 768px) {
  .welcome-content {
    max-width: 90%;
    padding: 30px 20px;
  }
  
  .welcome-title {
    font-size: 2rem;
  }
  
  .welcome-subtitle {
    font-size: 1rem;
  }
  
  .welcome-buttons {
    flex-direction: column;
    gap: 15px;
  }
  
  .welcome-btn {
    padding: 14px 24px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .welcome-logo {
    font-size: 2.5rem;
  }
  
  .welcome-title {
    font-size: 1.8rem;
  }
  
  .welcome-subtitle {
    font-size: 0.9rem;
  }
}

/* Modelador oculto inicialmente */
.modeler-container {
  display: none;
  height: 100vh;
  width: 100vw;
}

.modeler-container.show {
  display: flex;
  flex-direction: column;
  animation: modelerFadeIn 0.5s ease-out;
}

@keyframes modelerFadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}