body {
  margin: 0;
  padding: 0;
  background: #ffffff;
  font-family: 'Segoe UI', sans-serif;
  color: #222;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  text-align: center;
  padding: 40px 20px;
  max-width: 400px;
  width: 100%;
}

.logo {
  width: 120px;
  margin-bottom: 20px;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 5px;
}

p {
  font-size: 1rem;
  color: #555;
  margin-bottom: 30px;
}

.botones {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

/* === Botones Cubo 3D === */
.cubo3d {
  position: relative;
  width: 100%;
  max-width: 220px;
  height: 50px;
  margin: 0 auto;
  transform-style: preserve-3d;
  transform: perspective(1000px) rotateX(0deg);
  transition: 4s ease-in-out;
}

.cubo3d span {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  color: #fff;
  font-size: 18px;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #000;
  box-sizing: border-box;
  box-shadow: inset 0 20px 50px rgba(0, 0, 0, 0.2);
  backface-visibility: hidden;
  transition: 0.5s;
}

/* Caras del cubo */
.cubo3d span:nth-child(1) {
  transform: rotateX(360deg) translateZ(25px);
}
.cubo3d span:nth-child(2) {
  transform: rotateX(270deg) translateZ(25px);
}
.cubo3d span:nth-child(3) {
  transform: rotateX(180deg) translateZ(25px);
}
.cubo3d span:nth-child(4) {
  transform: rotateX(90deg) translateZ(25px);
}

/* Colores por red */
.instagram span {
  background: #E1306C;
}
.facebook span {
  background: #1877F2;
}
.tiktok span {
  background: #000000;
}
.whatsapp span {
  background: #25D366;
}

footer {
  margin-top: 40px;
  font-size: 0.8rem;
  color: #aaa;
}

@media (max-width: 500px) {
  .container {
    padding: 25px 15px;
  }

  h1 {
    font-size: 1.5rem;
  }

  .cubo3d {
    height: 45px;
  }

  .cubo3d span {
    font-size: 16px;
  }

  .logo {
    width: 90px;
  }
}