* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f5f5f5;
  padding: 20px;
}

.contenedor {
  position: relative;
  width: 800px;
  height: 600px;
  background: #fff;
  border: 2px solid #000;
  display: flex;
  overflow: hidden;
}

.cerrar {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 30px;
  height: 30px;
  border: 1px solid #000;
  background: #fff;
  color: #000;
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  z-index: 10;
}

.lado-imagen {
  width: 50%;
  height: 100%;
}

.lado-imagen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.lado-formulario {
  width: 50%;
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  gap: 14px;
}

.logo {
  width: 105px;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.codigo {
  width: 100%;
  font-size: clamp(18px, 2.6vw, 20px);
  color: #000;
  font-weight: 600;
  line-height: 1.15;
  text-align: center;
}

.subtitulo {
  width: 100%;
  font-size: clamp(14px, 1.8vw, 15px);
  color: #000;
  line-height: 1.3;
  text-align: center;
}

.aviso {
  width: 100%;
  font-size: 14px;
  color: #000;
  font-weight: 700;
  text-align: center;
  line-height: 1.3;
}

form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.campo-email {
  width: 100%;
  height: 46px;
  border: 1px solid #000;
  padding: 0 14px;
  font-size: 16px;
  outline: none;
}

.boton,
.boton-extra {
  width: 100%;
  height: 46px;
  border: 1px solid #000;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.boton {
  background: #000;
}

.boton-login {
  background: #0b57d0;
  border-color: #0b57d0;
}

.boton-registro {
  background: #0b5d1e;
  border-color: #0b5d1e;
}

.boton:disabled,
.boton-extra:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

@media (max-width: 700px) {
  .contenedor {
    width: 100%;
    max-width: 400px;
    height: 500px;
    flex-direction: column;
  }

  .lado-imagen,
  .lado-formulario {
    width: 100%;
  }

  .lado-imagen {
    height: 40%;
  }

  .lado-formulario {
    height: 60%;
    justify-content: flex-start;
    padding: 12px 14px 16px;
    gap: 8px;
  }

  .codigo {
    font-size: clamp(18px, 5vw, 23px);
  }

  .subtitulo {
    font-size: clamp(13px, 3.8vw, 16px);
  }

  .aviso {
    font-size: 11px;
  }

  .campo-email,
  .boton,
  .boton-extra {
    height: 42px;
    font-size: 14px;
  }

  .cerrar {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
}