* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
  overflow: hidden;
  background: #111111;
  height: 100vh;
  width: 100vw;
}

/* ================================================
   PANTALLA DE BIENVENIDA - ESTILOS COMPLETOS
   ================================================ */
#pantalla-bienvenida {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background: #111111;
}

#video-fondo-bienvenida {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 1;
}

.capa-oscura-bienvenida {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(17, 17, 17, 0.75) 0%,
    rgba(17, 17, 17, 0.45) 50%,
    rgba(17, 17, 17, 0.75) 100%
  );
  z-index: 2;
}

.contenido-bienvenida {
  position: relative;
  z-index: 3;
  text-align: center;
  color: white;
  padding: 30px;
  max-width: 700px;
  animation: fadeInUp 1.2s ease;
}

/* Título principal */
.contenido-bienvenida h1 {
  font-size: 58px;
  font-weight: 900;
  letter-spacing: 6px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #FFD54F 0%, #F4B400 50%, #FFD54F 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  animation: glowText 2s ease-in-out infinite alternate;
}

@keyframes glowText {
  from {
    filter: drop-shadow(0 0 10px rgba(255, 213, 79, 0.3));
  }
  to {
    filter: drop-shadow(0 0 25px rgba(255, 213, 79, 0.6));
  }
}

/* Subtítulo */
.contenido-bienvenida p {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 35px;
  text-transform: uppercase;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* Línea decorativa */
.contenido-bienvenida::before {
  content: '';
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #FFD54F, transparent);
  margin: 0 auto 20px auto;
  animation: expandLine 1.5s ease;
}

@keyframes expandLine {
  from {
    width: 0;
    opacity: 0;
  }
  to {
    width: 80px;
    opacity: 1;
  }
}

/* Botón principal */
#btn-entrar-tour {
  background: linear-gradient(135deg, #FFD54F 0%, #F4B400 100%);
  color: #111111;
  border: none;
  padding: 16px 45px;
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(255, 213, 79, 0.3);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

#btn-entrar-tour::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s;
}

#btn-entrar-tour:hover::before {
  left: 100%;
}

#btn-entrar-tour:hover {
  background: #ffffff;
  color: #111111;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 40px rgba(255, 213, 79, 0.5), 0 0 60px rgba(255, 213, 79, 0.1);
}

#btn-entrar-tour:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 4px 15px rgba(255, 213, 79, 0.3);
}

/* Icono decorativo */
.contenido-bienvenida .icono-decorativo {
  font-size: 48px;
  margin-bottom: 15px;
  display: block;
  animation: floatIcon 3s ease-in-out infinite;
}

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

/* Animación de entrada */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .contenido-bienvenida h1 {
    font-size: 38px;
    letter-spacing: 4px;
  }
  
  .contenido-bienvenida p {
    font-size: 14px;
    letter-spacing: 2px;
    margin-bottom: 25px;
  }
  
  #btn-entrar-tour {
    padding: 14px 35px;
    font-size: 14px;
  }
  
  .contenido-bienvenida .icono-decorativo {
    font-size: 36px;
  }
}

@media (max-width: 480px) {
  .contenido-bienvenida h1 {
    font-size: 28px;
    letter-spacing: 2px;
  }
  
  .contenido-bienvenida p {
    font-size: 12px;
    letter-spacing: 1px;
    margin-bottom: 20px;
  }
  
  #btn-entrar-tour {
    padding: 12px 28px;
    font-size: 12px;
    letter-spacing: 1px;
  }
  
  .contenido-bienvenida .icono-decorativo {
    font-size: 28px;
  }
  
  .contenido-bienvenida::before {
    width: 50px;
  }
}